[ovs-dev,v2,ovn,5/5] Remove python directory
diff mbox series

Message ID 20190819181549.3134-1-nusiddiq@redhat.com
State Superseded
Headers show
Series
  • External OVS source support and separate run dir for OVN
Related show

Commit Message

Numan Siddique Aug. 19, 2019, 6:15 p.m. UTC
From: Numan Siddique <nusiddiq@redhat.com>

The python/ directory belongs to Open vSwitch repo.
This patch uses the python utils required for building OVN from
the configured OVS source directory and deletes the python directory.

Signed-off-by: Numan Siddique <nusiddiq@redhat.com>
---
 Makefile.am                                   |    5 +-
 python/.gitignore                             |    2 -
 python/README.rst                             |    1 -
 python/automake.mk                            |  123 -
 python/build/__init__.py                      |    0
 python/build/nroff.py                         |  398 ---
 python/build/soutil.py                        |   56 -
 python/ovs/.gitignore                         |    1 -
 python/ovs/__init__.py                        |    1 -
 python/ovs/_json.c                            |  269 --
 python/ovs/compat/__init__.py                 |    0
 python/ovs/compat/sortedcontainers/LICENSE    |   13 -
 .../ovs/compat/sortedcontainers/__init__.py   |   52 -
 .../ovs/compat/sortedcontainers/sorteddict.py |  741 -----
 .../ovs/compat/sortedcontainers/sortedlist.py | 2508 -----------------
 .../ovs/compat/sortedcontainers/sortedset.py  |  327 ---
 python/ovs/daemon.py                          |  652 -----
 python/ovs/db/__init__.py                     |    1 -
 python/ovs/db/custom_index.py                 |  154 -
 python/ovs/db/data.py                         |  585 ----
 python/ovs/db/error.py                        |   34 -
 python/ovs/db/idl.py                          | 2030 -------------
 python/ovs/db/parser.py                       |  118 -
 python/ovs/db/schema.py                       |  304 --
 python/ovs/db/types.py                        |  647 -----
 python/ovs/dirs.py                            |   31 -
 python/ovs/dirs.py.template                   |   31 -
 python/ovs/fatal_signal.py                    |  183 --
 python/ovs/fcntl_win.py                       |   46 -
 python/ovs/json.py                            |  531 ----
 python/ovs/jsonrpc.py                         |  616 ----
 python/ovs/ovsuuid.py                         |   70 -
 python/ovs/poller.py                          |  290 --
 python/ovs/process.py                         |   41 -
 python/ovs/reconnect.py                       |  608 ----
 python/ovs/socket_util.py                     |  335 ---
 python/ovs/stream.py                          |  831 ------
 python/ovs/timeval.py                         |   81 -
 python/ovs/unixctl/__init__.py                |   91 -
 python/ovs/unixctl/client.py                  |   68 -
 python/ovs/unixctl/server.py                  |  260 --
 python/ovs/util.py                            |   95 -
 python/ovs/vlog.py                            |  475 ----
 python/ovs/winutils.py                        |  266 --
 python/ovstest/__init__.py                    |    1 -
 python/ovstest/args.py                        |  283 --
 python/ovstest/rpcserver.py                   |  383 ---
 python/ovstest/tcp.py                         |  120 -
 python/ovstest/tests.py                       |  250 --
 python/ovstest/udp.py                         |   85 -
 python/ovstest/util.py                        |  253 --
 python/ovstest/vswitch.py                     |  107 -
 python/setup.py                               |  102 -
 tests/ovn-controller-vtep.at                  |    2 +
 54 files changed, 4 insertions(+), 15553 deletions(-)
 delete mode 100644 python/.gitignore
 delete mode 100644 python/README.rst
 delete mode 100644 python/automake.mk
 delete mode 100644 python/build/__init__.py
 delete mode 100644 python/build/nroff.py
 delete mode 100755 python/build/soutil.py
 delete mode 100644 python/ovs/.gitignore
 delete mode 100644 python/ovs/__init__.py
 delete mode 100644 python/ovs/_json.c
 delete mode 100644 python/ovs/compat/__init__.py
 delete mode 100644 python/ovs/compat/sortedcontainers/LICENSE
 delete mode 100644 python/ovs/compat/sortedcontainers/__init__.py
 delete mode 100644 python/ovs/compat/sortedcontainers/sorteddict.py
 delete mode 100644 python/ovs/compat/sortedcontainers/sortedlist.py
 delete mode 100644 python/ovs/compat/sortedcontainers/sortedset.py
 delete mode 100644 python/ovs/daemon.py
 delete mode 100644 python/ovs/db/__init__.py
 delete mode 100644 python/ovs/db/custom_index.py
 delete mode 100644 python/ovs/db/data.py
 delete mode 100644 python/ovs/db/error.py
 delete mode 100644 python/ovs/db/idl.py
 delete mode 100644 python/ovs/db/parser.py
 delete mode 100644 python/ovs/db/schema.py
 delete mode 100644 python/ovs/db/types.py
 delete mode 100644 python/ovs/dirs.py
 delete mode 100644 python/ovs/dirs.py.template
 delete mode 100644 python/ovs/fatal_signal.py
 delete mode 100644 python/ovs/fcntl_win.py
 delete mode 100644 python/ovs/json.py
 delete mode 100644 python/ovs/jsonrpc.py
 delete mode 100644 python/ovs/ovsuuid.py
 delete mode 100644 python/ovs/poller.py
 delete mode 100644 python/ovs/process.py
 delete mode 100644 python/ovs/reconnect.py
 delete mode 100644 python/ovs/socket_util.py
 delete mode 100644 python/ovs/stream.py
 delete mode 100644 python/ovs/timeval.py
 delete mode 100644 python/ovs/unixctl/__init__.py
 delete mode 100644 python/ovs/unixctl/client.py
 delete mode 100644 python/ovs/unixctl/server.py
 delete mode 100644 python/ovs/util.py
 delete mode 100644 python/ovs/vlog.py
 delete mode 100644 python/ovs/winutils.py
 delete mode 100644 python/ovstest/__init__.py
 delete mode 100644 python/ovstest/args.py
 delete mode 100644 python/ovstest/rpcserver.py
 delete mode 100644 python/ovstest/tcp.py
 delete mode 100644 python/ovstest/tests.py
 delete mode 100644 python/ovstest/udp.py
 delete mode 100644 python/ovstest/util.py
 delete mode 100644 python/ovstest/vswitch.py
 delete mode 100644 python/setup.py

Patch
diff mbox series

diff --git a/Makefile.am b/Makefile.am
index f3df733a1..559cb1689 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -77,7 +77,7 @@  endif
 # foo/__init__.py into an (older) version with plain foo.py, since
 # foo/__init__.pyc will cause Python to ignore foo.py.
 run_python = \
-	PYTHONPATH=$(top_srcdir)/python$(psep)$$PYTHONPATH \
+	PYTHONPATH=$(OVS_SRCDIR)/python$(psep)$$PYTHONPATH \
 	PYTHONDONTWRITEBYTECODE=yes $(PYTHON)
 
 ALL_LOCAL =
@@ -430,7 +430,7 @@  endif
 CLEANFILES += flake8-check
 
 include $(srcdir)/manpages.mk
-$(srcdir)/manpages.mk: $(MAN_ROOTS) build-aux/sodepends.py python/build/soutil.py
+$(srcdir)/manpages.mk: $(MAN_ROOTS) build-aux/sodepends.py $(OVS_SRCDIR)/python/build/soutil.py
 	@PYTHONPATH=$$PYTHONPATH$(psep)$(srcdir)/python $(PYTHON) $(srcdir)/build-aux/sodepends.py -I. -I$(srcdir) -I$(OVS_MANDIR) $(MAN_ROOTS) >$(@F).tmp
 	@if cmp -s $(@F).tmp $@; then \
 	  touch $@; \
@@ -516,7 +516,6 @@  include lib/ovsdb_automake.mk
 include ipsec/automake.mk
 include rhel/automake.mk
 include xenserver/automake.mk
-include python/automake.mk
 include tutorial/automake.mk
 include selinux/automake.mk
 include controller/automake.mk
diff --git a/python/.gitignore b/python/.gitignore
deleted file mode 100644
index 60ace6f05..000000000
--- a/python/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@ 
-dist/
-*.egg-info
diff --git a/python/README.rst b/python/README.rst
deleted file mode 100644
index 4f4742c53..000000000
--- a/python/README.rst
+++ /dev/null
@@ -1 +0,0 @@ 
-Python library for working with Open vSwitch
diff --git a/python/automake.mk b/python/automake.mk
deleted file mode 100644
index 5a1e1da8a..000000000
--- a/python/automake.mk
+++ /dev/null
@@ -1,123 +0,0 @@ 
-ovstest_pyfiles = \
-	python/ovstest/__init__.py \
-	python/ovstest/args.py \
-	python/ovstest/rpcserver.py \
-	python/ovstest/tcp.py \
-	python/ovstest/tests.py \
-	python/ovstest/udp.py \
-	python/ovstest/util.py \
-	python/ovstest/vswitch.py
-
-ovs_pyfiles = \
-	python/ovs/__init__.py \
-	python/ovs/compat/__init__.py \
-	python/ovs/compat/sortedcontainers/__init__.py \
-	python/ovs/compat/sortedcontainers/sortedlist.py \
-	python/ovs/compat/sortedcontainers/sorteddict.py \
-	python/ovs/compat/sortedcontainers/sortedset.py \
-	python/ovs/daemon.py \
-	python/ovs/fcntl_win.py \
-	python/ovs/db/__init__.py \
-	python/ovs/db/custom_index.py \
-	python/ovs/db/data.py \
-	python/ovs/db/error.py \
-	python/ovs/db/idl.py \
-	python/ovs/db/parser.py \
-	python/ovs/db/schema.py \
-	python/ovs/db/types.py \
-	python/ovs/fatal_signal.py \
-	python/ovs/json.py \
-	python/ovs/jsonrpc.py \
-	python/ovs/ovsuuid.py \
-	python/ovs/poller.py \
-	python/ovs/process.py \
-	python/ovs/reconnect.py \
-	python/ovs/socket_util.py \
-	python/ovs/stream.py \
-	python/ovs/timeval.py \
-	python/ovs/unixctl/__init__.py \
-	python/ovs/unixctl/client.py \
-	python/ovs/unixctl/server.py \
-	python/ovs/util.py \
-	python/ovs/version.py \
-	python/ovs/vlog.py \
-	python/ovs/winutils.py
-# These python files are used at build time but not runtime,
-# so they are not installed.
-EXTRA_DIST += \
-	python/build/__init__.py \
-	python/build/nroff.py \
-	python/build/soutil.py
-
-# PyPI support.
-EXTRA_DIST += \
-	python/ovs/compat/sortedcontainers/LICENSE \
-	python/README.rst \
-	python/setup.py
-
-# C extension support.
-EXTRA_DIST += python/ovs/_json.c
-
-PYFILES = $(ovs_pyfiles) python/ovs/dirs.py $(ovstest_pyfiles)
-EXTRA_DIST += $(PYFILES)
-PYCOV_CLEAN_FILES += $(PYFILES:.py=.py,cover)
-
-FLAKE8_PYFILES += \
-	$(filter-out python/ovs/compat/% python/ovs/dirs.py,$(PYFILES)) \
-	python/setup.py \
-	python/build/__init__.py \
-	python/build/nroff.py \
-	python/ovs/dirs.py.template
-
-if HAVE_PYTHON
-nobase_pkgdata_DATA = $(ovs_pyfiles) $(ovstest_pyfiles)
-ovs-install-data-local:
-	$(MKDIR_P) python/ovs
-	sed \
-		-e '/^##/d' \
-                -e 's,[@]pkgdatadir[@],$(pkgdatadir),g' \
-                -e 's,[@]RUNDIR[@],$(RUNDIR),g' \
-                -e 's,[@]LOGDIR[@],$(LOGDIR),g' \
-                -e 's,[@]bindir[@],$(bindir),g' \
-                -e 's,[@]sysconfdir[@],$(sysconfdir),g' \
-                -e 's,[@]DBDIR[@],$(DBDIR),g' \
-		< $(srcdir)/python/ovs/dirs.py.template \
-		> python/ovs/dirs.py.tmp
-	$(MKDIR_P) $(DESTDIR)$(pkgdatadir)/python/ovs
-	$(INSTALL_DATA) python/ovs/dirs.py.tmp $(DESTDIR)$(pkgdatadir)/python/ovs/dirs.py
-	rm python/ovs/dirs.py.tmp
-
-python-sdist: $(srcdir)/python/ovs/version.py $(ovs_pyfiles) python/ovs/dirs.py
-	(cd python/ && $(PYTHON) setup.py sdist)
-
-pypi-upload: $(srcdir)/python/ovs/version.py $(ovs_pyfiles) python/ovs/dirs.py
-	(cd python/ && $(PYTHON) setup.py sdist upload)
-else
-ovs-install-data-local:
-	@:
-endif
-install-data-local: ovs-install-data-local
-
-UNINSTALL_LOCAL += ovs-uninstall-local
-ovs-uninstall-local:
-	rm -f $(DESTDIR)$(pkgdatadir)/python/ovs/dirs.py
-
-ALL_LOCAL += $(srcdir)/python/ovs/version.py
-$(srcdir)/python/ovs/version.py: config.status
-	$(AM_V_GEN)$(ro_shell) > $(@F).tmp && \
-	echo 'VERSION = "$(VERSION)"' >> $(@F).tmp && \
-	if cmp -s $(@F).tmp $@; then touch $@; rm $(@F).tmp; else mv $(@F).tmp $@; fi
-
-ALL_LOCAL += $(srcdir)/python/ovs/dirs.py
-$(srcdir)/python/ovs/dirs.py: python/ovs/dirs.py.template
-	$(AM_V_GEN)sed \
-		-e '/^##/d' \
-                -e 's,[@]pkgdatadir[@],/usr/local/share/openvswitch,g' \
-                -e 's,[@]RUNDIR[@],/var/run,g' \
-                -e 's,[@]LOGDIR[@],/usr/local/var/log,g' \
-                -e 's,[@]bindir[@],/usr/local/bin,g' \
-                -e 's,[@]sysconfdir[@],/usr/local/etc,g' \
-                -e 's,[@]DBDIR[@],/usr/local/etc/openvswitch,g' \
-		< $? > $@.tmp && \
-	mv $@.tmp $@
-EXTRA_DIST += python/ovs/dirs.py.template
diff --git a/python/build/__init__.py b/python/build/__init__.py
deleted file mode 100644
index e69de29bb..000000000
diff --git a/python/build/nroff.py b/python/build/nroff.py
deleted file mode 100644
index a94907757..000000000
--- a/python/build/nroff.py
+++ /dev/null
@@ -1,398 +0,0 @@ 
-# Copyright (c) 2010, 2011, 2012, 2015, 2016, 2017 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import re
-import sys
-
-from ovs.db import error
-
-
-def text_to_nroff(s, font=r'\fR', escape_dot=True):
-    def escape(match):
-        c = match.group(0)
-
-        # In Roman type, let -- in XML be \- in nroff.  That gives us a way to
-        # write minus signs, which is important in some places in manpages.
-        #
-        # Bold in nroff usually represents literal text, where there's no
-        # distinction between hyphens and minus sign.  The convention in nroff
-        # appears to be to use a minus sign in such cases, so we follow that
-        # convention.
-        #
-        # Finally, we always output - as a minus sign when it is followed by a
-        # digit.
-        if c.startswith('-'):
-            if c == '--' and font == r'\fR':
-                return r'\-'
-            if c != '-' or font in (r'\fB', r'\fL'):
-                return c.replace('-', r'\-')
-            else:
-                return '-'
-
-        if c == '\\':
-            return r'\e'
-        elif c == '"':
-            return r'\(dq'
-        elif c == "'":
-            return r'\(cq'
-        elif c == ".":
-            if escape_dot:
-                # groff(7) says that . can be escaped by \. but in practice
-                # groff still gives an error with \. at the beginning of a
-                # line.
-                return r'\[char46]'
-            else:
-                return '.'
-        else:
-            raise error.Error("bad escape")
-
-    # Escape - \ " ' . as needed by nroff.
-    s = re.sub('(-[0-9]|--|[-"\'\\\\.])', escape, s)
-    return s
-
-
-def escape_nroff_literal(s, font=r'\fB'):
-    return font + r'%s\fR' % text_to_nroff(s, font)
-
-
-def inline_xml_to_nroff(node, font, to_upper=False, newline='\n'):
-    if node.nodeType == node.TEXT_NODE:
-        if to_upper:
-            s = text_to_nroff(node.data.upper(), font)
-        else:
-            s = text_to_nroff(node.data, font)
-        return s.replace('\n', newline)
-    elif node.nodeType == node.ELEMENT_NODE:
-        if node.tagName in ['code', 'em', 'option', 'env', 'b']:
-            s = r'\fB'
-            for child in node.childNodes:
-                s += inline_xml_to_nroff(child, r'\fB', to_upper, newline)
-            return s + font
-        elif node.tagName == 'ref':
-            if node.hasAttribute('column'):
-                s = node.attributes['column'].nodeValue
-                if node.hasAttribute('key'):
-                    s += ':' + node.attributes['key'].nodeValue
-            elif node.hasAttribute('table'):
-                s = node.attributes['table'].nodeValue
-            elif node.hasAttribute('group'):
-                s = node.attributes['group'].nodeValue
-            elif node.hasAttribute('db'):
-                s = node.attributes['db'].nodeValue
-            elif node.hasAttribute('field'):
-                s = node.attributes['field'].nodeValue
-            elif node.hasAttribute('section'):
-                s = node.attributes['section'].nodeValue
-            else:
-                raise error.Error("'ref' lacks required attributes: %s"
-                                  % list(node.attributes.keys()))
-            return r'\fB' + re.sub(r'\s+', ' ', s) + font
-        elif node.tagName in ['var', 'dfn', 'i', 'cite']:
-            s = r'\fI'
-            for child in node.childNodes:
-                s += inline_xml_to_nroff(child, r'\fI', to_upper, newline)
-            return s + font
-        elif node.tagName in ['literal']:
-            s = r'\fL'
-            for child in node.childNodes:
-                s += inline_xml_to_nroff(child, r'\fL')
-            return s + font
-        elif node.tagName == 'url':
-            return ('\n.URL "'
-                    + text_to_nroff(node.attributes['href'].nodeValue,
-                                    escape_dot=False)
-                    + '"\n')
-        else:
-            raise error.Error("element <%s> unknown or invalid here"
-                              % node.tagName)
-    elif node.nodeType == node.COMMENT_NODE:
-        return ''
-    else:
-        raise error.Error("unknown node %s in inline xml" % node)
-
-
-def pre_to_nroff(nodes, para, font):
-    # This puts 'font' at the beginning of each line so that leading and
-    # trailing whitespace stripping later doesn't removed leading spaces
-    # from preformatted text.
-    s = para + '\n.nf\n' + font
-    for node in nodes:
-        s += inline_xml_to_nroff(node, font, False, '\n.br\n' + font) + '\\fR'
-    s += '\n.fi\n'
-    return s
-
-
-def tbl_to_nroff(nodes, para):
-    s = para + '\n.TS\n'
-    for node in nodes:
-        if node.nodeType != node.TEXT_NODE:
-            fatal("<tbl> element may only have text children")
-        s += node.data + '\n'
-    s += '.TE\n'
-    return s
-
-
-def fatal(msg):
-    sys.stderr.write('%s\n' % msg)
-    sys.exit(1)
-
-
-def put_text(text, x, y, s):
-    x = int(x)
-    y = int(y)
-    extend = x + len(s) - len(text[y])
-    if extend > 0:
-        text[y] += ' ' * extend
-    text[y] = text[y][:x] + s + text[y][x + len(s):]
-
-
-def put_centered(text, x, width, y, s):
-    put_text(text, x + (width - len(s)) / 2, y, s)
-
-
-def diagram_header_to_nroff(header_node, text, x):
-    # Parse header.
-    header_fields = []
-    i = 0
-    for node in header_node.childNodes:
-        if node.nodeType == node.ELEMENT_NODE and node.tagName == 'bits':
-            name = node.attributes['name'].nodeValue
-            width = node.attributes['width'].nodeValue
-            above = node.getAttribute('above')
-            below = node.getAttribute('below')
-            fill = node.getAttribute('fill')
-            header_fields += [{"name": name,
-                              "tag": "B%d" % i,
-                              "width": width,
-                              "above": above,
-                              "below": below,
-                              "fill": fill}]
-            i += 1
-        elif node.nodeType == node.COMMENT_NODE:
-            pass
-        elif node.nodeType == node.TEXT_NODE and node.data.isspace():
-            pass
-        else:
-            fatal("unknown node %s in diagram <header> element" % node)
-
-    # Format pic version.
-    pic_s = ""
-    for f in header_fields:
-        name = f['name'].replace('...', '. . .')
-        pic_s += "  %s: box \"%s\" width %s" % (f['tag'], name, f['width'])
-        if f['fill'] == 'yes':
-            pic_s += " fill"
-        pic_s += '\n'
-    for f in header_fields:
-        pic_s += "  \"%s\" at %s.n above\n" % (f['above'], f['tag'])
-        pic_s += "  \"%s\" at %s.s below\n" % (f['below'], f['tag'])
-    name = header_node.getAttribute('name')
-    if name == "":
-        visible = " invis"
-    else:
-        visible = ""
-    pic_s += "line <->%s \"%s\" above " % (visible, name)
-    pic_s += "from %s.nw + (0,textht) " % header_fields[0]['tag']
-    pic_s += "to %s.ne + (0,textht)\n" % header_fields[-1]['tag']
-
-    # Format text version.
-    header_width = 1
-    for f in header_fields:
-        field_width = max(len(f['above']), len(f['below']), len(f['name']))
-        f['width'] = field_width
-        header_width += field_width + 1
-    min_header_width = 2 + len(name)
-    while min_header_width > header_width:
-        for f in header_fields:
-            f['width'] += 1
-            header_width += 1
-            if header_width >= min_header_width:
-                break
-
-    if name != "":
-        put_centered(text, x, header_width, 0, name)
-        if header_width >= 4:
-            arrow = '<' + '-' * (header_width - 4) + '>'
-            put_text(text, x + 1, 1, arrow)
-    for f in header_fields:
-        box1 = '+' + '-' * f['width'] + '+'
-        box2 = '|' + ' ' * f['width'] + '|'
-        put_text(text, x, 3, box1)
-        put_text(text, x, 4, box2)
-        put_text(text, x, 5, box1)
-
-        put_centered(text, x + 1, f['width'], 2, f['above'])
-        put_centered(text, x + 1, f['width'], 4, f['name'])
-        put_centered(text, x + 1, f['width'], 6, f['below'])
-
-        x += f['width'] + 1
-
-    return pic_s, x + 1
-
-
-def diagram_to_nroff(nodes, para):
-    pic_s = ''
-    text = [''] * 7
-    x = 0
-    move = False
-    for node in nodes:
-        if node.nodeType == node.ELEMENT_NODE and node.tagName == 'header':
-            if move:
-                pic_s += "move .1\n"
-                x += 1
-            elif x > 0:
-                x -= 1
-            pic_header, x = diagram_header_to_nroff(node, text, x)
-            pic_s += "[\n" + pic_header + "]\n"
-            move = True
-        elif node.nodeType == node.ELEMENT_NODE and node.tagName == 'nospace':
-            move = False
-        elif node.nodeType == node.ELEMENT_NODE and node.tagName == 'dots':
-            pic_s += "move .1\n"
-            pic_s += '". . ." ljust\n'
-
-            put_text(text, x, 4, " ... ")
-            x += 5
-        elif node.nodeType == node.COMMENT_NODE:
-            pass
-        elif node.nodeType == node.TEXT_NODE and node.data.isspace():
-            pass
-        else:
-            fatal("unknown node %s in diagram <header> element" % node)
-
-    text_s = '.br\n'.join(["\\fL%s\n" % s for s in text if s != ""])
-    return para + """
-.\\" check if in troff mode (TTY)
-.if t \\{
-.PS
-boxht = .2
-textht = 1/6
-fillval = .2
-""" + pic_s + """\
-.PE
-\\}
-.\\" check if in nroff mode:
-.if n \\{
-.nf
-""" + text_s + """\
-.fi
-\\}"""
-
-
-def block_xml_to_nroff(nodes, para='.PP'):
-    HEADER_TAGS = ('h1', 'h2', 'h3', 'h4')
-    s = ''
-    prev = ''
-    for node in nodes:
-        if node.nodeType == node.TEXT_NODE:
-            if s == '' and para != '.IP':
-                s = para + '\n'
-            text = re.sub(r'\s+', ' ', node.data)
-            if s.endswith(' '):
-                text = text.lstrip()
-            s += text_to_nroff(text)
-            s = s.lstrip()
-        elif node.nodeType == node.ELEMENT_NODE:
-            if node.tagName in ['ul', 'ol']:
-                if s != "":
-                    s += "\n"
-                s += ".RS\n"
-                i = 0
-                for li_node in node.childNodes:
-                    if (li_node.nodeType == node.ELEMENT_NODE
-                        and li_node.tagName == 'li'):
-                        i += 1
-                        if node.tagName == 'ul':
-                            s += ".IP \\(bu\n"
-                        else:
-                            s += ".IP %d. .4in\n" % i
-                        s += block_xml_to_nroff(li_node.childNodes, ".IP")
-                    elif li_node.nodeType == node.COMMENT_NODE:
-                        pass
-                    elif (li_node.nodeType != node.TEXT_NODE
-                          or not li_node.data.isspace()):
-                        raise error.Error("<%s> element may only have "
-                                          "<li> children" % node.tagName)
-                s += ".RE\n"
-            elif node.tagName == 'dl':
-                indent = True
-                if prev in HEADER_TAGS:
-                    indent = False
-                if s != "":
-                    s += "\n"
-                if indent:
-                    s += ".RS\n"
-                prev = "dd"
-                for li_node in node.childNodes:
-                    if (li_node.nodeType == node.ELEMENT_NODE
-                        and li_node.tagName == 'dt'):
-                        if prev == 'dd':
-                            s += '.TP\n'
-                        else:
-                            s += '.TQ .5in\n'
-                        prev = 'dt'
-                    elif (li_node.nodeType == node.ELEMENT_NODE
-                          and li_node.tagName == 'dd'):
-                        if prev == 'dd':
-                            s += '.IP\n'
-                        prev = 'dd'
-                    elif li_node.nodeType == node.COMMENT_NODE:
-                        continue
-                    elif (li_node.nodeType != node.TEXT_NODE
-                          or not li_node.data.isspace()):
-                        raise error.Error("<dl> element may only have "
-                                          "<dt> and <dd> children")
-                    s += block_xml_to_nroff(li_node.childNodes, ".IP")
-                if indent:
-                    s += ".RE\n"
-            elif node.tagName == 'p':
-                if s != "":
-                    if not s.endswith("\n"):
-                        s += "\n"
-                    s += para + "\n"
-                s += block_xml_to_nroff(node.childNodes, para)
-            elif node.tagName in HEADER_TAGS:
-                if s != "":
-                    if not s.endswith("\n"):
-                        s += "\n"
-                nroffTag, font = {'h1': ('SH', r'\fR'),
-                                  'h2': ('SS', r'\fB'),
-                                  'h3': ('ST', r'\fI'),
-                                  'h4': ('SU', r'\fI')}[node.tagName]
-                to_upper = node.tagName == 'h1'
-                s += ".%s \"" % nroffTag
-                for child_node in node.childNodes:
-                    s += inline_xml_to_nroff(child_node, font, to_upper)
-                s += "\"\n"
-            elif node.tagName == 'pre':
-                fixed = node.getAttribute('fixed')
-                if fixed == 'yes':
-                    font = r'\fL'
-                else:
-                    font = r'\fB'
-                s += pre_to_nroff(node.childNodes, para, font)
-            elif node.tagName == 'tbl':
-                s += tbl_to_nroff(node.childNodes, para)
-            elif node.tagName == 'diagram':
-                s += diagram_to_nroff(node.childNodes, para)
-            else:
-                s += inline_xml_to_nroff(node, r'\fR')
-            prev = node.tagName
-        elif node.nodeType == node.COMMENT_NODE:
-            pass
-        else:
-            raise error.Error("unknown node %s in block xml" % node)
-    if s != "" and not s.endswith('\n'):
-        s += '\n'
-    return s
diff --git a/python/build/soutil.py b/python/build/soutil.py
deleted file mode 100755
index b8027af86..000000000
--- a/python/build/soutil.py
+++ /dev/null
@@ -1,56 +0,0 @@ 
-#! /usr/bin/env python
-
-# Copyright (c) 2008, 2017 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import getopt
-import os
-import re
-import sys
-
-
-def parse_include_dirs():
-    include_dirs = []
-    options, args = getopt.gnu_getopt(sys.argv[1:], 'I:', ['include='])
-    for key, value in options:
-        if key in ['-I', '--include']:
-            include_dirs.append(value)
-        else:
-            assert False
-
-    include_dirs.append('.')
-    return include_dirs, args
-
-
-def find_file(include_dirs, name):
-    for dir in include_dirs:
-        file = "%s/%s" % (dir, name)
-        try:
-            os.stat(file)
-            return file
-        except OSError:
-            pass
-    sys.stderr.write("%s not found in: %s\n" % (name, ' '.join(include_dirs)))
-    return None
-
-
-so_re = re.compile(r'^\.so (\S+)$')
-
-
-def extract_include_directive(line):
-    m = so_re.match(line)
-    if m:
-        return m.group(1)
-    else:
-        return None
diff --git a/python/ovs/.gitignore b/python/ovs/.gitignore
deleted file mode 100644
index 985278646..000000000
--- a/python/ovs/.gitignore
+++ /dev/null
@@ -1 +0,0 @@ 
-version.py
diff --git a/python/ovs/__init__.py b/python/ovs/__init__.py
deleted file mode 100644
index 218d8921e..000000000
--- a/python/ovs/__init__.py
+++ /dev/null
@@ -1 +0,0 @@ 
-# This file intentionally left blank.
diff --git a/python/ovs/_json.c b/python/ovs/_json.c
deleted file mode 100644
index ef7bb4b8e..000000000
--- a/python/ovs/_json.c
+++ /dev/null
@@ -1,269 +0,0 @@ 
-#include "Python.h"
-#include <openvswitch/json.h>
-#include "structmember.h"
-
-#if PY_MAJOR_VERSION >= 3
-#define IS_PY3K
-#endif
-
-typedef struct {
-    PyObject_HEAD
-    struct json_parser *_parser;
-} json_ParserObject;
-
-static void
-Parser_dealloc(json_ParserObject * p)
-{
-    json_parser_abort(p->_parser);
-    Py_TYPE(p)->tp_free(p);
-}
-
-static PyObject *
-Parser_new(PyTypeObject * type, PyObject * args, PyObject * kwargs)
-{
-    json_ParserObject *self;
-    static char *kwlist[] = { "check_trailer", NULL };
-    PyObject *check_trailer = NULL;
-    int ct_int = 0;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|O", kwlist,
-                                     &check_trailer)) {
-        return NULL;
-    }
-
-    if (check_trailer != NULL) {
-        ct_int = PyObject_IsTrue(check_trailer);
-        if (ct_int < 0) {
-            return NULL;
-        } else if (ct_int) {
-            ct_int = JSPF_TRAILER;
-        }
-    }
-
-    self = (json_ParserObject *) type->tp_alloc(type, 0);
-    if (self != NULL) {
-        self->_parser = json_parser_create(ct_int);
-    }
-
-    return (PyObject *) self;
-}
-
-static PyObject *
-Parser_feed(json_ParserObject * self, PyObject * args)
-{
-    Py_ssize_t input_sz;
-    PyObject *input;
-    size_t rd;
-    char *input_str;
-
-    if (self->_parser == NULL) {
-        return NULL;
-    }
-
-    if (!PyArg_UnpackTuple(args, "input", 1, 1, &input)) {
-        return NULL;
-    }
-#ifdef IS_PY3K
-    if ((input_str = PyUnicode_AsUTF8AndSize(input, &input_sz)) == NULL) {
-#else
-    if (PyString_AsStringAndSize(input, &input_str, &input_sz) < 0) {
-#endif
-        return NULL;
-    }
-
-    rd = json_parser_feed(self->_parser, input_str, (size_t) input_sz);
-
-#ifdef IS_PY3K
-    return PyLong_FromSize_t(rd);
-#else
-    return PyInt_FromSize_t(rd);
-#endif
-}
-
-static PyObject *
-Parser_is_done(json_ParserObject * self)
-{
-    if (self->_parser == NULL) {
-        return NULL;
-    }
-    return PyBool_FromLong(json_parser_is_done(self->_parser));
-}
-
-static PyObject *
-json_to_python(struct json *json)
-{
-    switch (json->type) {
-    case JSON_NULL:
-        Py_RETURN_NONE;
-    case JSON_FALSE:
-        Py_RETURN_FALSE;
-    case JSON_TRUE:
-        Py_RETURN_TRUE;
-    case JSON_OBJECT:{
-            struct shash_node *node;
-            PyObject *dict = PyDict_New();
-
-            if (dict == NULL) {
-                return PyErr_NoMemory();
-            }
-            SHASH_FOR_EACH (node, json->object) {
-                PyObject *key = PyUnicode_FromString(node->name);
-                PyObject *val = json_to_python(node->data);
-
-                if (!(key && val) || PyDict_SetItem(dict, key, val)) {
-                    Py_XDECREF(key);
-                    Py_XDECREF(val);
-                    Py_XDECREF(dict);
-                    return NULL;
-                }
-
-                Py_XDECREF(key);
-                Py_XDECREF(val);
-            }
-            return dict;
-        }
-    case JSON_ARRAY:{
-            int i;
-            PyObject *arr = PyList_New(json->array.n);
-
-            if (arr == NULL) {
-                return PyErr_NoMemory();
-            }
-            for (i = 0; i < json->array.n; i++) {
-                PyObject *item = json_to_python(json->array.elems[i]);
-
-                if (!item || PyList_SetItem(arr, i, item)) {
-                    Py_XDECREF(arr);
-                    return NULL;
-                }
-            }
-            return arr;
-        }
-    case JSON_REAL:
-        if (json->real != 0) {
-            return PyFloat_FromDouble(json->real);
-        } /* fall through to treat 0 as int */
-    case JSON_INTEGER:
-#ifdef IS_PY3K
-        return PyLong_FromLong((long) json->integer);
-#else
-        return PyInt_FromLong((long) json->integer);
-#endif
-
-    case JSON_STRING:
-        return PyUnicode_FromString(json->string);
-    default:
-        return NULL;
-    }
-}
-
-static PyObject *
-Parser_finish(json_ParserObject * self)
-{
-    struct json *json;
-    PyObject *obj;
-
-    if (self->_parser == NULL) {
-        return NULL;
-    }
-
-    json = json_parser_finish(self->_parser);
-    self->_parser = NULL;
-    obj = json_to_python(json);
-    json_destroy(json);
-    return obj;
-}
-
-static PyMethodDef Parser_methods[] = {
-    {"feed", (PyCFunction) Parser_feed, METH_VARARGS,
-     "Feed data to the parser and return the index of the last object."},
-    {"is_done", (PyCFunction) Parser_is_done, METH_NOARGS,
-     "Whether the parser has finished decoding an object."},
-    {"finish", (PyCFunction) Parser_finish, METH_NOARGS,
-     "Finish parsing and return Python object parsed."},
-    {NULL},
-};
-
-static PyTypeObject json_ParserType = {
-    PyVarObject_HEAD_INIT(NULL, 0)
-        "ovs._json.Parser",     /* tp_name */
-    sizeof (json_ParserObject), /* tp_basicsize */
-    0,                          /* tp_itemsize */
-    (destructor) Parser_dealloc,        /* tp_dealloc */
-    0,                          /* tp_print */
-    0,                          /* tp_getattr */
-    0,                          /* tp_setattr */
-    0,                          /* tp_compare */
-    0,                          /* tp_repr */
-    0,                          /* tp_as_number */
-    0,                          /* tp_as_sequence */
-    0,                          /* tp_as_mapping */
-    0,                          /* tp_hash */
-    0,                          /* tp_call */
-    0,                          /* tp_str */
-    0,                          /* tp_getattro */
-    0,                          /* tp_setattro */
-    0,                          /* tp_as_buffer */
-    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,   /* tp_flags */
-    "Parser objects",           /* tp_doc */
-    0,                          /* tp_traverse */
-    0,                          /* tp_clear */
-    0,                          /* tp_richcompare */
-    0,                          /* tp_weaklistoffset */
-    0,                          /* tp_iter */
-    0,                          /* tp_iternext */
-    Parser_methods,             /* tp_methods */
-    0,                          /* tp_members */
-    0,                          /* tp_getset */
-    0,                          /* tp_base */
-    0,                          /* tp_dict */
-    0,                          /* tp_descr_get */
-    0,                          /* tp_descr_set */
-    0,                          /* tp_dictoffset */
-    0,                          /* tp_init */
-    0,                          /* tp_alloc */
-    Parser_new,                 /* tp_new */
-};
-
-#ifdef IS_PY3K
-static struct PyModuleDef moduledef = {
-    PyModuleDef_HEAD_INIT,
-    "ovs._json",                /* m_name */
-    "OVS JSON Parser module",   /* m_doc */
-    0,                          /* m_size */
-    0,                          /* m_methods */
-    0,                          /* m_slots */
-    0,                          /* m_traverse */
-    0,                          /* m_clear */
-    0,                          /* m_free */
-};
-
-#define INITERROR return NULL
-#else /* !IS_PY3K */
-#define INITERROR return
-#endif
-
-PyMODINIT_FUNC
-#ifdef IS_PY3K
-PyInit__json(void)
-#else
-init_json(void)
-#endif
-{
-    PyObject *m;
-
-    if (PyType_Ready(&json_ParserType) < 0) {
-        INITERROR;
-    }
-#ifdef IS_PY3K
-    m = PyModule_Create(&moduledef);
-#else
-    m = Py_InitModule3("ovs._json", NULL, "OVS JSON Parser module");
-#endif
-
-    Py_INCREF(&json_ParserType);
-    PyModule_AddObject(m, "Parser", (PyObject *) & json_ParserType);
-#ifdef IS_PY3K
-    return m;
-#endif
-}
diff --git a/python/ovs/compat/__init__.py b/python/ovs/compat/__init__.py
deleted file mode 100644
index e69de29bb..000000000
diff --git a/python/ovs/compat/sortedcontainers/LICENSE b/python/ovs/compat/sortedcontainers/LICENSE
deleted file mode 100644
index 8794014e0..000000000
--- a/python/ovs/compat/sortedcontainers/LICENSE
+++ /dev/null
@@ -1,13 +0,0 @@ 
-Copyright 2014-2016 Grant Jenks
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
diff --git a/python/ovs/compat/sortedcontainers/__init__.py b/python/ovs/compat/sortedcontainers/__init__.py
deleted file mode 100644
index 392adfad6..000000000
--- a/python/ovs/compat/sortedcontainers/__init__.py
+++ /dev/null
@@ -1,52 +0,0 @@ 
-"""Sorted Container Types: SortedList, SortedDict, SortedSet
-
-SortedContainers is an Apache2 licensed containers library, written in
-pure-Python, and fast as C-extensions.
-
-
-Python's standard library is great until you need a sorted collections
-type. Many will attest that you can get really far without one, but the moment
-you **really need** a sorted list, dict, or set, you're faced with a dozen
-different implementations, most using C-extensions without great documentation
-and benchmarking.
-
-In Python, we can do better. And we can do it in pure-Python!
-
-::
-
-    >>> from sortedcontainers import SortedList, SortedDict, SortedSet
-    >>> sl = SortedList(xrange(10000000))
-    >>> 1234567 in sl
-    True
-    >>> sl[7654321]
-    7654321
-    >>> sl.add(1234567)
-    >>> sl.count(1234567)
-    2
-    >>> sl *= 3
-    >>> len(sl)
-    30000003
-
-SortedContainers takes all of the work out of Python sorted types - making your
-deployment and use of Python easy. There's no need to install a C compiler or
-pre-build and distribute custom extensions. Performance is a feature and
-testing has 100% coverage with unit tests and hours of stress.
-
-:copyright: (c) 2016 by Grant Jenks.
-:license: Apache 2.0, see LICENSE for more details.
-
-"""
-
-
-from .sortedlist import SortedList, SortedListWithKey
-from .sortedset import SortedSet
-from .sorteddict import SortedDict
-
-__all__ = ['SortedList', 'SortedSet', 'SortedDict', 'SortedListWithKey']
-
-__title__ = 'sortedcontainers'
-__version__ = '1.5.9'
-__build__ = 0x010509
-__author__ = 'Grant Jenks'
-__license__ = 'Apache 2.0'
-__copyright__ = 'Copyright 2016 Grant Jenks'
diff --git a/python/ovs/compat/sortedcontainers/sorteddict.py b/python/ovs/compat/sortedcontainers/sorteddict.py
deleted file mode 100644
index 5d425fee6..000000000
--- a/python/ovs/compat/sortedcontainers/sorteddict.py
+++ /dev/null
@@ -1,741 +0,0 @@ 
-"""Sorted dictionary implementation.
-
-"""
-
-from collections import Set, Sequence
-from collections import KeysView as AbstractKeysView
-from collections import ValuesView as AbstractValuesView
-from collections import ItemsView as AbstractItemsView
-from sys import hexversion
-
-from .sortedlist import SortedList, recursive_repr, SortedListWithKey
-from .sortedset import SortedSet
-
-NONE = object()
-
-
-class _IlocWrapper(object):
-    "Positional indexing support for sorted dictionary objects."
-    # pylint: disable=protected-access, too-few-public-methods
-    def __init__(self, _dict):
-        self._dict = _dict
-    def __len__(self):
-        return len(self._dict)
-    def __getitem__(self, index):
-        """
-        Very efficiently return the key at index *index* in iteration. Supports
-        negative indices and slice notation. Raises IndexError on invalid
-        *index*.
-        """
-        return self._dict._list[index]
-    def __delitem__(self, index):
-        """
-        Remove the ``sdict[sdict.iloc[index]]`` from *sdict*. Supports negative
-        indices and slice notation. Raises IndexError on invalid *index*.
-        """
-        _dict = self._dict
-        _list = _dict._list
-        _delitem = _dict._delitem
-
-        if isinstance(index, slice):
-            keys = _list[index]
-            del _list[index]
-            for key in keys:
-                _delitem(key)
-        else:
-            key = _list[index]
-            del _list[index]
-            _delitem(key)
-
-
-class SortedDict(dict):
-    """SortedDict provides the same methods as a dict.  Additionally, SortedDict
-    efficiently maintains its keys in sorted order. Consequently, the keys
-    method will return the keys in sorted order, the popitem method will remove
-    the item with the highest key, etc.
-
-    """
-    def __init__(self, *args, **kwargs):
-        """SortedDict provides the same methods as a dict.  Additionally, SortedDict
-        efficiently maintains its keys in sorted order. Consequently, the keys
-        method will return the keys in sorted order, the popitem method will
-        remove the item with the highest key, etc.
-
-        An optional *key* argument defines a callable that, like the `key`
-        argument to Python's `sorted` function, extracts a comparison key from
-        each dict key. If no function is specified, the default compares the
-        dict keys directly. The `key` argument must be provided as a positional
-        argument and must come before all other arguments.
-
-        An optional *iterable* argument provides an initial series of items to
-        populate the SortedDict.  Each item in the series must itself contain
-        two items.  The first is used as a key in the new dictionary, and the
-        second as the key's value. If a given key is seen more than once, the
-        last value associated with it is retained in the new dictionary.
-
-        If keyword arguments are given, the keywords themselves with their
-        associated values are added as items to the dictionary. If a key is
-        specified both in the positional argument and as a keyword argument, the
-        value associated with the keyword is retained in the dictionary. For
-        example, these all return a dictionary equal to ``{"one": 2, "two":
-        3}``:
-
-        * ``SortedDict(one=2, two=3)``
-        * ``SortedDict({'one': 2, 'two': 3})``
-        * ``SortedDict(zip(('one', 'two'), (2, 3)))``
-        * ``SortedDict([['two', 3], ['one', 2]])``
-
-        The first example only works for keys that are valid Python
-        identifiers; the others work with any valid keys.
-
-        """
-        # pylint: disable=super-init-not-called
-        if args and (args[0] is None or callable(args[0])):
-            self._key = args[0]
-            args = args[1:]
-        else:
-            self._key = None
-
-        if self._key is None:
-            self._list = SortedList()
-        else:
-            self._list = SortedListWithKey(key=self._key)
-
-        # Cache function pointers to dict methods.
-
-        _dict = super(SortedDict, self)
-        self._dict = _dict
-        self._clear = _dict.clear
-        self._delitem = _dict.__delitem__
-        self._iter = _dict.__iter__
-        self._pop = _dict.pop
-        self._setdefault = _dict.setdefault
-        self._setitem = _dict.__setitem__
-        self._dict_update = _dict.update
-
-        # Cache function pointers to SortedList methods.
-
-        _list = self._list
-        self._list_add = _list.add
-        self.bisect_left = _list.bisect_left
-        self.bisect = _list.bisect_right
-        self.bisect_right = _list.bisect_right
-        self._list_clear = _list.clear
-        self.index = _list.index
-        self._list_pop = _list.pop
-        self._list_remove = _list.remove
-        self._list_update = _list.update
-        self.irange = _list.irange
-        self.islice = _list.islice
-        self._reset = _list._reset  # pylint: disable=protected-access
-
-        if self._key is not None:
-            self.bisect_key_left = _list.bisect_key_left
-            self.bisect_key_right = _list.bisect_key_right
-            self.bisect_key = _list.bisect_key
-            self.irange_key = _list.irange_key
-
-        self.iloc = _IlocWrapper(self)
-
-        self._update(*args, **kwargs)
-
-    @property
-    def key(self):
-        """Key function used to extract comparison key for sorting."""
-        return self._key
-
-    def clear(self):
-        """Remove all elements from the dictionary."""
-        self._clear()
-        self._list_clear()
-
-    def __delitem__(self, key):
-        """
-        Remove ``d[key]`` from *d*.  Raises a KeyError if *key* is not in the
-        dictionary.
-        """
-        self._delitem(key)
-        self._list_remove(key)
-
-    def __iter__(self):
-        """
-        Return an iterator over the sorted keys of the dictionary.
-
-        Iterating the Mapping while adding or deleting keys may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return iter(self._list)
-
-    def __reversed__(self):
-        """
-        Return a reversed iterator over the sorted keys of the dictionary.
-
-        Iterating the Mapping while adding or deleting keys may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return reversed(self._list)
-
-    def __setitem__(self, key, value):
-        """Set `d[key]` to *value*."""
-        if key not in self:
-            self._list_add(key)
-        self._setitem(key, value)
-
-    def copy(self):
-        """Return a shallow copy of the sorted dictionary."""
-        return self.__class__(self._key, self._iteritems())
-
-    __copy__ = copy
-
-    @classmethod
-    def fromkeys(cls, seq, value=None):
-        """
-        Create a new dictionary with keys from *seq* and values set to *value*.
-        """
-        return cls((key, value) for key in seq)
-
-    if hexversion < 0x03000000:
-        def items(self):
-            """
-            Return a list of the dictionary's items (``(key, value)`` pairs).
-            """
-            return list(self._iteritems())
-    else:
-        def items(self):
-            """
-            Return a new ItemsView of the dictionary's items.  In addition to
-            the methods provided by the built-in `view` the ItemsView is
-            indexable (e.g. ``d.items()[5]``).
-            """
-            return ItemsView(self)
-
-    def iteritems(self):
-        """
-        Return an iterator over the items (``(key, value)`` pairs).
-
-        Iterating the Mapping while adding or deleting keys may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return iter((key, self[key]) for key in self._list)
-
-    _iteritems = iteritems
-
-    if hexversion < 0x03000000:
-        def keys(self):
-            """Return a SortedSet of the dictionary's keys."""
-            return SortedSet(self._list, key=self._key)
-    else:
-        def keys(self):
-            """
-            Return a new KeysView of the dictionary's keys.  In addition to the
-            methods provided by the built-in `view` the KeysView is indexable
-            (e.g. ``d.keys()[5]``).
-            """
-            return KeysView(self)
-
-    def iterkeys(self):
-        """
-        Return an iterator over the sorted keys of the Mapping.
-
-        Iterating the Mapping while adding or deleting keys may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return iter(self._list)
-
-    if hexversion < 0x03000000:
-        def values(self):
-            """Return a list of the dictionary's values."""
-            return list(self._itervalues())
-    else:
-        def values(self):
-            """
-            Return a new :class:`ValuesView` of the dictionary's values.
-            In addition to the methods provided by the built-in `view` the
-            ValuesView is indexable (e.g., ``d.values()[5]``).
-            """
-            return ValuesView(self)
-
-    def itervalues(self):
-        """
-        Return an iterator over the values of the Mapping.
-
-        Iterating the Mapping while adding or deleting keys may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return iter(self[key] for key in self._list)
-
-    _itervalues = itervalues
-
-    def pop(self, key, default=NONE):
-        """
-        If *key* is in the dictionary, remove it and return its value,
-        else return *default*. If *default* is not given and *key* is not in
-        the dictionary, a KeyError is raised.
-        """
-        if key in self:
-            self._list_remove(key)
-            return self._pop(key)
-        else:
-            if default is NONE:
-                raise KeyError(key)
-            else:
-                return default
-
-    def popitem(self, last=True):
-        """
-        Remove and return a ``(key, value)`` pair from the dictionary. If
-        last=True (default) then remove the *greatest* `key` from the
-        diciontary. Else, remove the *least* key from the dictionary.
-
-        If the dictionary is empty, calling `popitem` raises a
-        KeyError`.
-        """
-        if not self:
-            raise KeyError('popitem(): dictionary is empty')
-
-        key = self._list_pop(-1 if last else 0)
-        value = self._pop(key)
-
-        return (key, value)
-
-    def peekitem(self, index=-1):
-        """Return (key, value) item pair at index.
-
-        Unlike ``popitem``, the sorted dictionary is not modified. Index
-        defaults to -1, the last/greatest key in the dictionary. Specify
-        ``index=0`` to lookup the first/least key in the dictiony.
-
-        If index is out of range, raise IndexError.
-
-        """
-        key = self._list[index]
-        return key, self[key]
-
-    def setdefault(self, key, default=None):
-        """
-        If *key* is in the dictionary, return its value.  If not, insert *key*
-        with a value of *default* and return *default*.  *default* defaults to
-        ``None``.
-        """
-        if key in self:
-            return self[key]
-
-        self._setitem(key, default)
-        self._list_add(key)
-        return default
-
-    def update(self, *args, **kwargs):
-        """
-        Update the dictionary with the key/value pairs from *other*, overwriting
-        existing keys.
-
-        *update* accepts either another dictionary object or an iterable of
-        key/value pairs (as a tuple or other iterable of length two).  If
-        keyword arguments are specified, the dictionary is then updated with
-        those key/value pairs: ``d.update(red=1, blue=2)``.
-        """
-        if not self:
-            self._dict_update(*args, **kwargs)
-            self._list_update(self._iter())
-            return
-
-        if not kwargs and len(args) == 1 and isinstance(args[0], dict):
-            pairs = args[0]
-        else:
-            pairs = dict(*args, **kwargs)
-
-        if (10 * len(pairs)) > len(self):
-            self._dict_update(pairs)
-            self._list_clear()
-            self._list_update(self._iter())
-        else:
-            for key in pairs:
-                self[key] = pairs[key]
-
-    _update = update
-
-    if hexversion >= 0x02070000:
-        def viewkeys(self):
-            "Return ``KeysView`` of dictionary keys."
-            return KeysView(self)
-
-        def viewvalues(self):
-            "Return ``ValuesView`` of dictionary values."
-            return ValuesView(self)
-
-        def viewitems(self):
-            "Return ``ItemsView`` of dictionary (key, value) item pairs."
-            return ItemsView(self)
-
-    def __reduce__(self):
-        return (self.__class__, (self._key, list(self._iteritems())))
-
-    @recursive_repr
-    def __repr__(self):
-        _key = self._key
-        name = type(self).__name__
-        key = '' if _key is None else '{0!r}, '.format(_key)
-        func = '{0!r}: {1!r}'.format
-        items = ', '.join(func(key, self[key]) for key in self._list)
-        return '{0}({1}{{{2}}})'.format(name, key, items)
-
-    def _check(self):
-        # pylint: disable=protected-access
-        self._list._check()
-        assert len(self) == len(self._list)
-        assert all(key in self for key in self._list)
-
-
-class KeysView(AbstractKeysView, Set, Sequence):
-    """
-    A KeysView object is a dynamic view of the dictionary's keys, which
-    means that when the dictionary's keys change, the view reflects
-    those changes.
-
-    The KeysView class implements the Set and Sequence Abstract Base Classes.
-    """
-    # pylint: disable=too-many-ancestors
-    if hexversion < 0x03000000:
-        def __init__(self, sorted_dict):
-            """
-            Initialize a KeysView from a SortedDict container as *sorted_dict*.
-            """
-            # pylint: disable=super-init-not-called, protected-access
-            self._list = sorted_dict._list
-            self._view = sorted_dict._dict.viewkeys()
-    else:
-        def __init__(self, sorted_dict):
-            """
-            Initialize a KeysView from a SortedDict container as *sorted_dict*.
-            """
-            # pylint: disable=super-init-not-called, protected-access
-            self._list = sorted_dict._list
-            self._view = sorted_dict._dict.keys()
-    def __len__(self):
-        """Return the number of entries in the dictionary."""
-        return len(self._view)
-    def __contains__(self, key):
-        """
-        Return True if and only if *key* is one of the underlying dictionary's
-        keys.
-        """
-        return key in self._view
-    def __iter__(self):
-        """
-        Return an iterable over the keys in the dictionary. Keys are iterated
-        over in their sorted order.
-
-        Iterating views while adding or deleting entries in the dictionary may
-        raise a `RuntimeError` or fail to iterate over all entries.
-        """
-        return iter(self._list)
-    def __getitem__(self, index):
-        """Return the key at position *index*."""
-        return self._list[index]
-    def __reversed__(self):
-        """
-        Return a reversed iterable over the keys in the dictionary. Keys are
-        iterated over in their reverse sort order.
-
-        Iterating views while adding or deleting entries in the dictionary may
-        raise a RuntimeError or fail to iterate over all entries.
-        """
-        return reversed(self._list)
-    def index(self, value, start=None, stop=None):
-        """
-        Return the smallest *k* such that `keysview[k] == value` and `start <= k
-        < end`.  Raises `KeyError` if *value* is not present.  *stop* defaults
-        to the end of the set.  *start* defaults to the beginning.  Negative
-        indexes are supported, as for slice indices.
-        """
-        # pylint: disable=arguments-differ
-        return self._list.index(value, start, stop)
-    def count(self, value):
-        """Return the number of occurrences of *value* in the set."""
-        return 1 if value in self._view else 0
-    def __eq__(self, that):
-        """Test set-like equality with *that*."""
-        return self._view == that
-    def __ne__(self, that):
-        """Test set-like inequality with *that*."""
-        return self._view != that
-    def __lt__(self, that):
-        """Test whether self is a proper subset of *that*."""
-        return self._view < that
-    def __gt__(self, that):
-        """Test whether self is a proper superset of *that*."""
-        return self._view > that
-    def __le__(self, that):
-        """Test whether self is contained within *that*."""
-        return self._view <= that
-    def __ge__(self, that):
-        """Test whether *that* is contained within self."""
-        return self._view >= that
-    def __and__(self, that):
-        """Return a SortedSet of the intersection of self and *that*."""
-        return SortedSet(self._view & that)
-    def __or__(self, that):
-        """Return a SortedSet of the union of self and *that*."""
-        return SortedSet(self._view | that)
-    def __sub__(self, that):
-        """Return a SortedSet of the difference of self and *that*."""
-        return SortedSet(self._view - that)
-    def __xor__(self, that):
-        """Return a SortedSet of the symmetric difference of self and *that*."""
-        return SortedSet(self._view ^ that)
-    if hexversion < 0x03000000:
-        def isdisjoint(self, that):
-            """Return True if and only if *that* is disjoint with self."""
-            # pylint: disable=arguments-differ
-            return not any(key in self._list for key in that)
-    else:
-        def isdisjoint(self, that):
-            """Return True if and only if *that* is disjoint with self."""
-            # pylint: disable=arguments-differ
-            return self._view.isdisjoint(that)
-    @recursive_repr
-    def __repr__(self):
-        return 'SortedDict_keys({0!r})'.format(list(self))
-
-
-class ValuesView(AbstractValuesView, Sequence):
-    """
-    A ValuesView object is a dynamic view of the dictionary's values, which
-    means that when the dictionary's values change, the view reflects those
-    changes.
-
-    The ValuesView class implements the Sequence Abstract Base Class.
-    """
-    # pylint: disable=too-many-ancestors
-    if hexversion < 0x03000000:
-        def __init__(self, sorted_dict):
-            """
-            Initialize a ValuesView from a SortedDict container as
-            *sorted_dict*.
-            """
-            # pylint: disable=super-init-not-called, protected-access
-            self._dict = sorted_dict
-            self._list = sorted_dict._list
-            self._view = sorted_dict._dict.viewvalues()
-    else:
-        def __init__(self, sorted_dict):
-            """
-            Initialize a ValuesView from a SortedDict container as
-            *sorted_dict*.
-            """
-            # pylint: disable=super-init-not-called, protected-access
-            self._dict = sorted_dict
-            self._list = sorted_dict._list
-            self._view = sorted_dict._dict.values()
-    def __len__(self):
-        """Return the number of entries in the dictionary."""
-        return len(self._dict)
-    def __contains__(self, value):
-        """
-        Return True if and only if *value* is in the underlying Mapping's
-        values.
-        """
-        return value in self._view
-    def __iter__(self):
-        """
-        Return an iterator over the values in the dictionary.  Values are
-        iterated over in sorted order of the keys.
-
-        Iterating views while adding or deleting entries in the dictionary may
-        raise a `RuntimeError` or fail to iterate over all entries.
-        """
-        _dict = self._dict
-        return iter(_dict[key] for key in self._list)
-    def __getitem__(self, index):
-        """
-        Efficiently return value at *index* in iteration.
-
-        Supports slice notation and negative indexes.
-        """
-        _dict, _list = self._dict, self._list
-        if isinstance(index, slice):
-            return [_dict[key] for key in _list[index]]
-        return _dict[_list[index]]
-    def __reversed__(self):
-        """
-        Return a reverse iterator over the values in the dictionary.  Values are
-        iterated over in reverse sort order of the keys.
-
-        Iterating views while adding or deleting entries in the dictionary may
-        raise a `RuntimeError` or fail to iterate over all entries.
-        """
-        _dict = self._dict
-        return iter(_dict[key] for key in reversed(self._list))
-    def index(self, value):
-        """
-        Return index of *value* in self.
-
-        Raises ValueError if *value* is not found.
-        """
-        # pylint: disable=arguments-differ
-        for idx, val in enumerate(self):
-            if value == val:
-                return idx
-        raise ValueError('{0!r} is not in dict'.format(value))
-    if hexversion < 0x03000000:
-        def count(self, value):
-            """Return the number of occurrences of *value* in self."""
-            return sum(1 for val in self._dict.itervalues() if val == value)
-    else:
-        def count(self, value):
-            """Return the number of occurrences of *value* in self."""
-            return sum(1 for val in self._dict.values() if val == value)
-    def __lt__(self, that):
-        raise TypeError
-    def __gt__(self, that):
-        raise TypeError
-    def __le__(self, that):
-        raise TypeError
-    def __ge__(self, that):
-        raise TypeError
-    def __and__(self, that):
-        raise TypeError
-    def __or__(self, that):
-        raise TypeError
-    def __sub__(self, that):
-        raise TypeError
-    def __xor__(self, that):
-        raise TypeError
-    @recursive_repr
-    def __repr__(self):
-        return 'SortedDict_values({0!r})'.format(list(self))
-
-
-class ItemsView(AbstractItemsView, Set, Sequence):
-    """
-    An ItemsView object is a dynamic view of the dictionary's ``(key,
-    value)`` pairs, which means that when the dictionary changes, the
-    view reflects those changes.
-
-    The ItemsView class implements the Set and Sequence Abstract Base Classes.
-    However, the set-like operations (``&``, ``|``, ``-``, ``^``) will only
-    operate correctly if all of the dictionary's values are hashable.
-    """
-    # pylint: disable=too-many-ancestors
-    if hexversion < 0x03000000:
-        def __init__(self, sorted_dict):
-            """
-            Initialize an ItemsView from a SortedDict container as
-            *sorted_dict*.
-            """
-            # pylint: disable=super-init-not-called, protected-access
-            self._dict = sorted_dict
-            self._list = sorted_dict._list
-            self._view = sorted_dict._dict.viewitems()
-    else:
-        def __init__(self, sorted_dict):
-            """
-            Initialize an ItemsView from a SortedDict container as
-            *sorted_dict*.
-            """
-            # pylint: disable=super-init-not-called, protected-access
-            self._dict = sorted_dict
-            self._list = sorted_dict._list
-            self._view = sorted_dict._dict.items()
-    def __len__(self):
-        """Return the number of entries in the dictionary."""
-        return len(self._view)
-    def __contains__(self, key):
-        """
-        Return True if and only if *key* is one of the underlying dictionary's
-        items.
-        """
-        return key in self._view
-    def __iter__(self):
-        """
-        Return an iterable over the items in the dictionary. Items are iterated
-        over in their sorted order.
-
-        Iterating views while adding or deleting entries in the dictionary may
-        raise a `RuntimeError` or fail to iterate over all entries.
-        """
-        _dict = self._dict
-        return iter((key, _dict[key]) for key in self._list)
-    def __getitem__(self, index):
-        """Return the item as position *index*."""
-        _dict, _list = self._dict, self._list
-        if isinstance(index, slice):
-            return [(key, _dict[key]) for key in _list[index]]
-        key = _list[index]
-        return (key, _dict[key])
-    def __reversed__(self):
-        """
-        Return a reversed iterable over the items in the dictionary. Items are
-        iterated over in their reverse sort order.
-
-        Iterating views while adding or deleting entries in the dictionary may
-        raise a RuntimeError or fail to iterate over all entries.
-        """
-        _dict = self._dict
-        return iter((key, _dict[key]) for key in reversed(self._list))
-    def index(self, key, start=None, stop=None):
-        """
-        Return the smallest *k* such that `itemssview[k] == key` and `start <= k
-        < end`.  Raises `KeyError` if *key* is not present.  *stop* defaults
-        to the end of the set.  *start* defaults to the beginning.  Negative
-        indexes are supported, as for slice indices.
-        """
-        # pylint: disable=arguments-differ
-        temp, value = key
-        pos = self._list.index(temp, start, stop)
-        if value == self._dict[temp]:
-            return pos
-        else:
-            raise ValueError('{0!r} is not in dict'.format(key))
-    def count(self, item):
-        """Return the number of occurrences of *item* in the set."""
-        # pylint: disable=arguments-differ
-        key, value = item
-        return 1 if key in self._dict and self._dict[key] == value else 0
-    def __eq__(self, that):
-        """Test set-like equality with *that*."""
-        return self._view == that
-    def __ne__(self, that):
-        """Test set-like inequality with *that*."""
-        return self._view != that
-    def __lt__(self, that):
-        """Test whether self is a proper subset of *that*."""
-        return self._view < that
-    def __gt__(self, that):
-        """Test whether self is a proper superset of *that*."""
-        return self._view > that
-    def __le__(self, that):
-        """Test whether self is contained within *that*."""
-        return self._view <= that
-    def __ge__(self, that):
-        """Test whether *that* is contained within self."""
-        return self._view >= that
-    def __and__(self, that):
-        """Return a SortedSet of the intersection of self and *that*."""
-        return SortedSet(self._view & that)
-    def __or__(self, that):
-        """Return a SortedSet of the union of self and *that*."""
-        return SortedSet(self._view | that)
-    def __sub__(self, that):
-        """Return a SortedSet of the difference of self and *that*."""
-        return SortedSet(self._view - that)
-    def __xor__(self, that):
-        """Return a SortedSet of the symmetric difference of self and *that*."""
-        return SortedSet(self._view ^ that)
-    if hexversion < 0x03000000:
-        def isdisjoint(self, that):
-            """Return True if and only if *that* is disjoint with self."""
-            # pylint: disable=arguments-differ
-            _dict = self._dict
-            for key, value in that:
-                if key in _dict and _dict[key] == value:
-                    return False
-            return True
-    else:
-        def isdisjoint(self, that):
-            """Return True if and only if *that* is disjoint with self."""
-            # pylint: disable=arguments-differ
-            return self._view.isdisjoint(that)
-    @recursive_repr
-    def __repr__(self):
-        return 'SortedDict_items({0!r})'.format(list(self))
diff --git a/python/ovs/compat/sortedcontainers/sortedlist.py b/python/ovs/compat/sortedcontainers/sortedlist.py
deleted file mode 100644
index 8aec6bbac..000000000
--- a/python/ovs/compat/sortedcontainers/sortedlist.py
+++ /dev/null
@@ -1,2508 +0,0 @@ 
-"""Sorted list implementation.
-
-"""
-# pylint: disable=redefined-builtin, ungrouped-imports
-
-from __future__ import print_function
-
-from bisect import bisect_left, bisect_right, insort
-from collections import Sequence, MutableSequence
-from functools import wraps
-from itertools import chain, repeat, starmap
-from math import log as log_e
-import operator as op
-from operator import iadd, add
-from sys import hexversion
-
-if hexversion < 0x03000000:
-    from itertools import izip as zip  # pylint: disable=no-name-in-module
-    from itertools import imap as map  # pylint: disable=no-name-in-module
-    try:
-        from thread import get_ident
-    except ImportError:
-        from dummy_thread import get_ident
-else:
-    from functools import reduce
-    try:
-        from _thread import get_ident
-    except ImportError:
-        from _dummy_thread import get_ident # pylint: disable=import-error
-
-LOAD = 1000
-
-def recursive_repr(func):
-    """Decorator to prevent infinite repr recursion."""
-    repr_running = set()
-
-    @wraps(func)
-    def wrapper(self):
-        "Return ellipsis on recursive re-entry to function."
-        key = id(self), get_ident()
-
-        if key in repr_running:
-            return '...'
-
-        repr_running.add(key)
-
-        try:
-            return func(self)
-        finally:
-            repr_running.discard(key)
-
-    return wrapper
-
-class SortedList(MutableSequence):
-    """
-    SortedList provides most of the same methods as a list but keeps the items
-    in sorted order.
-    """
-    # pylint: disable=too-many-ancestors
-    def __init__(self, iterable=None):
-        """
-        SortedList provides most of the same methods as a list but keeps the
-        items in sorted order.
-
-        An optional *iterable* provides an initial series of items to populate
-        the SortedList.
-        """
-        self._len = 0
-        self._lists = []
-        self._maxes = []
-        self._index = []
-        self._load = LOAD
-        self._half = LOAD >> 1
-        self._dual = LOAD << 1
-        self._offset = 0
-
-        if iterable is not None:
-            self._update(iterable)
-
-    def __new__(cls, iterable=None, key=None):
-        """
-        SortedList provides most of the same methods as a list but keeps the
-        items in sorted order.
-
-        An optional *iterable* provides an initial series of items to populate
-        the SortedList.
-
-        An optional *key* argument will return an instance of subtype
-        SortedListWithKey.
-        """
-        # pylint: disable=unused-argument
-        if key is None:
-            return object.__new__(cls)
-        else:
-            if cls is SortedList:
-                return object.__new__(SortedListWithKey)
-            else:
-                raise TypeError('inherit SortedListWithKey for key argument')
-
-    @property
-    def key(self):
-        """Key function used to extract comparison key for sorting."""
-        return None
-
-    def _reset(self, load):
-        """
-        Reset sorted list load.
-
-        The *load* specifies the load-factor of the list. The default load
-        factor of '1000' works well for lists from tens to tens of millions of
-        elements.  Good practice is to use a value that is the cube root of the
-        list size.  With billions of elements, the best load factor depends on
-        your usage.  It's best to leave the load factor at the default until
-        you start benchmarking.
-        """
-        values = reduce(iadd, self._lists, [])
-        self._clear()
-        self._load = load
-        self._half = load >> 1
-        self._dual = load << 1
-        self._update(values)
-
-    def clear(self):
-        """Remove all the elements from the list."""
-        self._len = 0
-        del self._lists[:]
-        del self._maxes[:]
-        del self._index[:]
-
-    _clear = clear
-
-    def add(self, val):
-        """Add the element *val* to the list."""
-        _lists = self._lists
-        _maxes = self._maxes
-
-        if _maxes:
-            pos = bisect_right(_maxes, val)
-
-            if pos == len(_maxes):
-                pos -= 1
-                _lists[pos].append(val)
-                _maxes[pos] = val
-            else:
-                insort(_lists[pos], val)
-
-            self._expand(pos)
-        else:
-            _lists.append([val])
-            _maxes.append(val)
-
-        self._len += 1
-
-    def _expand(self, pos):
-        """Splits sublists that are more than double the load level.
-
-        Updates the index when the sublist length is less than double the load
-        level. This requires incrementing the nodes in a traversal from the
-        leaf node to the root. For an example traversal see self._loc.
-
-        """
-        _lists = self._lists
-        _index = self._index
-
-        if len(_lists[pos]) > self._dual:
-            _maxes = self._maxes
-            _load = self._load
-
-            _lists_pos = _lists[pos]
-            half = _lists_pos[_load:]
-            del _lists_pos[_load:]
-            _maxes[pos] = _lists_pos[-1]
-
-            _lists.insert(pos + 1, half)
-            _maxes.insert(pos + 1, half[-1])
-
-            del _index[:]
-        else:
-            if _index:
-                child = self._offset + pos
-                while child:
-                    _index[child] += 1
-                    child = (child - 1) >> 1
-                _index[0] += 1
-
-    def update(self, iterable):
-        """Update the list by adding all elements from *iterable*."""
-        _lists = self._lists
-        _maxes = self._maxes
-        values = sorted(iterable)
-
-        if _maxes:
-            if len(values) * 4 >= self._len:
-                values.extend(chain.from_iterable(_lists))
-                values.sort()
-                self._clear()
-            else:
-                _add = self.add
-                for val in values:
-                    _add(val)
-                return
-
-        _load = self._load
-        _lists.extend(values[pos:(pos + _load)]
-                      for pos in range(0, len(values), _load))
-        _maxes.extend(sublist[-1] for sublist in _lists)
-        self._len = len(values)
-        del self._index[:]
-
-    _update = update
-
-    def __contains__(self, val):
-        """Return True if and only if *val* is an element in the list."""
-        _maxes = self._maxes
-
-        if not _maxes:
-            return False
-
-        pos = bisect_left(_maxes, val)
-
-        if pos == len(_maxes):
-            return False
-
-        _lists = self._lists
-        idx = bisect_left(_lists[pos], val)
-
-        return _lists[pos][idx] == val
-
-    def discard(self, val):
-        """
-        Remove the first occurrence of *val*.
-
-        If *val* is not a member, does nothing.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            return
-
-        pos = bisect_left(_maxes, val)
-
-        if pos == len(_maxes):
-            return
-
-        _lists = self._lists
-        idx = bisect_left(_lists[pos], val)
-
-        if _lists[pos][idx] == val:
-            self._delete(pos, idx)
-
-    def remove(self, val):
-        """
-        Remove first occurrence of *val*.
-
-        Raises ValueError if *val* is not present.
-        """
-        # pylint: disable=arguments-differ
-        _maxes = self._maxes
-
-        if not _maxes:
-            raise ValueError('{0!r} not in list'.format(val))
-
-        pos = bisect_left(_maxes, val)
-
-        if pos == len(_maxes):
-            raise ValueError('{0!r} not in list'.format(val))
-
-        _lists = self._lists
-        idx = bisect_left(_lists[pos], val)
-
-        if _lists[pos][idx] == val:
-            self._delete(pos, idx)
-        else:
-            raise ValueError('{0!r} not in list'.format(val))
-
-    def _delete(self, pos, idx):
-        """Delete the item at the given (pos, idx).
-
-        Combines lists that are less than half the load level.
-
-        Updates the index when the sublist length is more than half the load
-        level. This requires decrementing the nodes in a traversal from the leaf
-        node to the root. For an example traversal see self._loc.
-        """
-        _lists = self._lists
-        _maxes = self._maxes
-        _index = self._index
-
-        _lists_pos = _lists[pos]
-
-        del _lists_pos[idx]
-        self._len -= 1
-
-        len_lists_pos = len(_lists_pos)
-
-        if len_lists_pos > self._half:
-
-            _maxes[pos] = _lists_pos[-1]
-
-            if _index:
-                child = self._offset + pos
-                while child > 0:
-                    _index[child] -= 1
-                    child = (child - 1) >> 1
-                _index[0] -= 1
-
-        elif len(_lists) > 1:
-
-            if not pos:
-                pos += 1
-
-            prev = pos - 1
-            _lists[prev].extend(_lists[pos])
-            _maxes[prev] = _lists[prev][-1]
-
-            del _lists[pos]
-            del _maxes[pos]
-            del _index[:]
-
-            self._expand(prev)
-
-        elif len_lists_pos:
-
-            _maxes[pos] = _lists_pos[-1]
-
-        else:
-
-            del _lists[pos]
-            del _maxes[pos]
-            del _index[:]
-
-    def _loc(self, pos, idx):
-        """Convert an index pair (alpha, beta) into a single index that corresponds to
-        the position of the value in the sorted list.
-
-        Most queries require the index be built. Details of the index are
-        described in self._build_index.
-
-        Indexing requires traversing the tree from a leaf node to the root. The
-        parent of each node is easily computable at (pos - 1) // 2.
-
-        Left-child nodes are always at odd indices and right-child nodes are
-        always at even indices.
-
-        When traversing up from a right-child node, increment the total by the
-        left-child node.
-
-        The final index is the sum from traversal and the index in the sublist.
-
-        For example, using the index from self._build_index:
-
-        _index = 14 5 9 3 2 4 5
-        _offset = 3
-
-        Tree:
-
-                 14
-              5      9
-            3   2  4   5
-
-        Converting index pair (2, 3) into a single index involves iterating like
-        so:
-
-        1. Starting at the leaf node: offset + alpha = 3 + 2 = 5. We identify
-           the node as a left-child node. At such nodes, we simply traverse to
-           the parent.
-
-        2. At node 9, position 2, we recognize the node as a right-child node
-           and accumulate the left-child in our total. Total is now 5 and we
-           traverse to the parent at position 0.
-
-        3. Iteration ends at the root.
-
-        Computing the index is the sum of the total and beta: 5 + 3 = 8.
-        """
-        if not pos:
-            return idx
-
-        _index = self._index
-
-        if not _index:
-            self._build_index()
-
-        total = 0
-
-        # Increment pos to point in the index to len(self._lists[pos]).
-
-        pos += self._offset
-
-        # Iterate until reaching the root of the index tree at pos = 0.
-
-        while pos:
-
-            # Right-child nodes are at odd indices. At such indices
-            # account the total below the left child node.
-
-            if not pos & 1:
-                total += _index[pos - 1]
-
-            # Advance pos to the parent node.
-
-            pos = (pos - 1) >> 1
-
-        return total + idx
-
-    def _pos(self, idx):
-        """Convert an index into a pair (alpha, beta) that can be used to access
-        the corresponding _lists[alpha][beta] position.
-
-        Most queries require the index be built. Details of the index are
-        described in self._build_index.
-
-        Indexing requires traversing the tree to a leaf node. Each node has
-        two children which are easily computable. Given an index, pos, the
-        left-child is at pos * 2 + 1 and the right-child is at pos * 2 + 2.
-
-        When the index is less than the left-child, traversal moves to the
-        left sub-tree. Otherwise, the index is decremented by the left-child
-        and traversal moves to the right sub-tree.
-
-        At a child node, the indexing pair is computed from the relative
-        position of the child node as compared with the offset and the remaining
-        index.
-
-        For example, using the index from self._build_index:
-
-        _index = 14 5 9 3 2 4 5
-        _offset = 3
-
-        Tree:
-
-                 14
-              5      9
-            3   2  4   5
-
-        Indexing position 8 involves iterating like so:
-
-        1. Starting at the root, position 0, 8 is compared with the left-child
-           node (5) which it is greater than. When greater the index is
-           decremented and the position is updated to the right child node.
-
-        2. At node 9 with index 3, we again compare the index to the left-child
-           node with value 4. Because the index is the less than the left-child
-           node, we simply traverse to the left.
-
-        3. At node 4 with index 3, we recognize that we are at a leaf node and
-           stop iterating.
-
-        4. To compute the sublist index, we subtract the offset from the index
-           of the leaf node: 5 - 3 = 2. To compute the index in the sublist, we
-           simply use the index remaining from iteration. In this case, 3.
-
-        The final index pair from our example is (2, 3) which corresponds to
-        index 8 in the sorted list.
-        """
-        if idx < 0:
-            last_len = len(self._lists[-1])
-
-            if (-idx) <= last_len:
-                return len(self._lists) - 1, last_len + idx
-
-            idx += self._len
-
-            if idx < 0:
-                raise IndexError('list index out of range')
-        elif idx >= self._len:
-            raise IndexError('list index out of range')
-
-        if idx < len(self._lists[0]):
-            return 0, idx
-
-        _index = self._index
-
-        if not _index:
-            self._build_index()
-
-        pos = 0
-        child = 1
-        len_index = len(_index)
-
-        while child < len_index:
-            index_child = _index[child]
-
-            if idx < index_child:
-                pos = child
-            else:
-                idx -= index_child
-                pos = child + 1
-
-            child = (pos << 1) + 1
-
-        return (pos - self._offset, idx)
-
-    def _build_index(self):
-        """Build an index for indexing the sorted list.
-
-        Indexes are represented as binary trees in a dense array notation
-        similar to a binary heap.
-
-        For example, given a _lists representation storing integers:
-
-        [0]: 1 2 3
-        [1]: 4 5
-        [2]: 6 7 8 9
-        [3]: 10 11 12 13 14
-
-        The first transformation maps the sub-lists by their length. The
-        first row of the index is the length of the sub-lists.
-
-        [0]: 3 2 4 5
-
-        Each row after that is the sum of consecutive pairs of the previous row:
-
-        [1]: 5 9
-        [2]: 14
-
-        Finally, the index is built by concatenating these lists together:
-
-        _index = 14 5 9 3 2 4 5
-
-        An offset storing the start of the first row is also stored:
-
-        _offset = 3
-
-        When built, the index can be used for efficient indexing into the list.
-        See the comment and notes on self._pos for details.
-        """
-        row0 = list(map(len, self._lists))
-
-        if len(row0) == 1:
-            self._index[:] = row0
-            self._offset = 0
-            return
-
-        head = iter(row0)
-        tail = iter(head)
-        row1 = list(starmap(add, zip(head, tail)))
-
-        if len(row0) & 1:
-            row1.append(row0[-1])
-
-        if len(row1) == 1:
-            self._index[:] = row1 + row0
-            self._offset = 1
-            return
-
-        size = 2 ** (int(log_e(len(row1) - 1, 2)) + 1)
-        row1.extend(repeat(0, size - len(row1)))
-        tree = [row0, row1]
-
-        while len(tree[-1]) > 1:
-            head = iter(tree[-1])
-            tail = iter(head)
-            row = list(starmap(add, zip(head, tail)))
-            tree.append(row)
-
-        reduce(iadd, reversed(tree), self._index)
-        self._offset = size * 2 - 1
-
-    def __delitem__(self, idx):
-        """Remove the element at *idx*. Supports slicing."""
-        if isinstance(idx, slice):
-            start, stop, step = idx.indices(self._len)
-
-            if step == 1 and start < stop:
-                if start == 0 and stop == self._len:
-                    return self._clear()
-                elif self._len <= 8 * (stop - start):
-                    values = self._getitem(slice(None, start))
-                    if stop < self._len:
-                        values += self._getitem(slice(stop, None))
-                    self._clear()
-                    return self._update(values)
-
-            indices = range(start, stop, step)
-
-            # Delete items from greatest index to least so
-            # that the indices remain valid throughout iteration.
-
-            if step > 0:
-                indices = reversed(indices)
-
-            _pos, _delete = self._pos, self._delete
-
-            for index in indices:
-                pos, idx = _pos(index)
-                _delete(pos, idx)
-        else:
-            pos, idx = self._pos(idx)
-            self._delete(pos, idx)
-
-    _delitem = __delitem__
-
-    def __getitem__(self, idx):
-        """Return the element at *idx*. Supports slicing."""
-        _lists = self._lists
-
-        if isinstance(idx, slice):
-            start, stop, step = idx.indices(self._len)
-
-            if step == 1 and start < stop:
-                if start == 0 and stop == self._len:
-                    return reduce(iadd, self._lists, [])
-
-                start_pos, start_idx = self._pos(start)
-
-                if stop == self._len:
-                    stop_pos = len(_lists) - 1
-                    stop_idx = len(_lists[stop_pos])
-                else:
-                    stop_pos, stop_idx = self._pos(stop)
-
-                if start_pos == stop_pos:
-                    return _lists[start_pos][start_idx:stop_idx]
-
-                prefix = _lists[start_pos][start_idx:]
-                middle = _lists[(start_pos + 1):stop_pos]
-                result = reduce(iadd, middle, prefix)
-                result += _lists[stop_pos][:stop_idx]
-
-                return result
-
-            if step == -1 and start > stop:
-                result = self._getitem(slice(stop + 1, start + 1))
-                result.reverse()
-                return result
-
-            # Return a list because a negative step could
-            # reverse the order of the items and this could
-            # be the desired behavior.
-
-            indices = range(start, stop, step)
-            return list(self._getitem(index) for index in indices)
-        else:
-            if self._len:
-                if idx == 0:
-                    return _lists[0][0]
-                elif idx == -1:
-                    return _lists[-1][-1]
-            else:
-                raise IndexError('list index out of range')
-
-            if 0 <= idx < len(_lists[0]):
-                return _lists[0][idx]
-
-            len_last = len(_lists[-1])
-
-            if -len_last < idx < 0:
-                return _lists[-1][len_last + idx]
-
-            pos, idx = self._pos(idx)
-            return _lists[pos][idx]
-
-    _getitem = __getitem__
-
-    def _check_order(self, idx, val):
-        _len = self._len
-        _lists = self._lists
-
-        pos, loc = self._pos(idx)
-
-        if idx < 0:
-            idx += _len
-
-        # Check that the inserted value is not less than the
-        # previous value.
-
-        if idx > 0:
-            idx_prev = loc - 1
-            pos_prev = pos
-
-            if idx_prev < 0:
-                pos_prev -= 1
-                idx_prev = len(_lists[pos_prev]) - 1
-
-            if _lists[pos_prev][idx_prev] > val:
-                msg = '{0!r} not in sort order at index {1}'.format(val, idx)
-                raise ValueError(msg)
-
-        # Check that the inserted value is not greater than
-        # the previous value.
-
-        if idx < (_len - 1):
-            idx_next = loc + 1
-            pos_next = pos
-
-            if idx_next == len(_lists[pos_next]):
-                pos_next += 1
-                idx_next = 0
-
-            if _lists[pos_next][idx_next] < val:
-                msg = '{0!r} not in sort order at index {1}'.format(val, idx)
-                raise ValueError(msg)
-
-    def __setitem__(self, index, value):
-        """Replace item at position *index* with *value*.
-
-        Supports slice notation. Raises :exc:`ValueError` if the sort order
-        would be violated. When used with a slice and iterable, the
-        :exc:`ValueError` is raised before the list is mutated if the sort
-        order would be violated by the operation.
-
-        """
-        _lists = self._lists
-        _maxes = self._maxes
-        _check_order = self._check_order
-        _pos = self._pos
-
-        if isinstance(index, slice):
-            _len = self._len
-            start, stop, step = index.indices(_len)
-            indices = range(start, stop, step)
-
-            # Copy value to avoid aliasing issues with self and cases where an
-            # iterator is given.
-
-            values = tuple(value)
-
-            if step != 1:
-                if len(values) != len(indices):
-                    raise ValueError(
-                        'attempt to assign sequence of size %s'
-                        ' to extended slice of size %s'
-                        % (len(values), len(indices)))
-
-                # Keep a log of values that are set so that we can
-                # roll back changes if ordering is violated.
-
-                log = []
-                _append = log.append
-
-                for idx, val in zip(indices, values):
-                    pos, loc = _pos(idx)
-                    _append((idx, _lists[pos][loc], val))
-                    _lists[pos][loc] = val
-                    if len(_lists[pos]) == (loc + 1):
-                        _maxes[pos] = val
-
-                try:
-                    # Validate ordering of new values.
-
-                    for idx, _, newval in log:
-                        _check_order(idx, newval)
-
-                except ValueError:
-
-                    # Roll back changes from log.
-
-                    for idx, oldval, _ in log:
-                        pos, loc = _pos(idx)
-                        _lists[pos][loc] = oldval
-                        if len(_lists[pos]) == (loc + 1):
-                            _maxes[pos] = oldval
-
-                    raise
-            else:
-                if start == 0 and stop == _len:
-                    self._clear()
-                    return self._update(values)
-
-                if stop < start:
-                    # When calculating indices, stop may be less than start.
-                    # For example: ...[5:3:1] results in slice(5, 3, 1) which
-                    # is a valid but not useful stop index.
-                    stop = start
-
-                if values:
-
-                    # Check that given values are ordered properly.
-
-                    alphas = iter(values)
-                    betas = iter(values)
-                    next(betas)
-                    pairs = zip(alphas, betas)
-
-                    if not all(alpha <= beta for alpha, beta in pairs):
-                        raise ValueError('given values not in sort order')
-
-                    # Check ordering in context of sorted list.
-
-                    if start and self._getitem(start - 1) > values[0]:
-                        message = '{0!r} not in sort order at index {1}'.format(
-                            values[0], start)
-                        raise ValueError(message)
-
-                    if stop != _len and self._getitem(stop) < values[-1]:
-                        message = '{0!r} not in sort order at index {1}'.format(
-                            values[-1], stop)
-                        raise ValueError(message)
-
-                # Delete the existing values.
-
-                self._delitem(index)
-
-                # Insert the new values.
-
-                _insert = self.insert
-                for idx, val in enumerate(values):
-                    _insert(start + idx, val)
-        else:
-            pos, loc = _pos(index)
-            _check_order(index, value)
-            _lists[pos][loc] = value
-            if len(_lists[pos]) == (loc + 1):
-                _maxes[pos] = value
-
-    def __iter__(self):
-        """
-        Return an iterator over the Sequence.
-
-        Iterating the Sequence while adding or deleting values may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return chain.from_iterable(self._lists)
-
-    def __reversed__(self):
-        """
-        Return an iterator to traverse the Sequence in reverse.
-
-        Iterating the Sequence while adding or deleting values may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return chain.from_iterable(map(reversed, reversed(self._lists)))
-
-    def reverse(self):
-        """Raise NotImplementedError
-
-        SortedList maintains values in ascending sort order. Values may not be
-        reversed in-place.
-
-        Use ``reversed(sorted_list)`` for a reverse iterator over values in
-        descending sort order.
-
-        Implemented to override MutableSequence.reverse which provides an
-        erroneous default implementation.
-
-        """
-        raise NotImplementedError('.reverse() not defined')
-
-    def islice(self, start=None, stop=None, reverse=False):
-
-        """
-        Returns an iterator that slices `self` from `start` to `stop` index,
-        inclusive and exclusive respectively.
-
-        When `reverse` is `True`, values are yielded from the iterator in
-        reverse order.
-
-        Both `start` and `stop` default to `None` which is automatically
-        inclusive of the beginning and end.
-        """
-        _len = self._len
-
-        if not _len:
-            return iter(())
-
-        start, stop, _ = slice(start, stop).indices(self._len)
-
-        if start >= stop:
-            return iter(())
-
-        _pos = self._pos
-
-        min_pos, min_idx = _pos(start)
-
-        if stop == _len:
-            max_pos = len(self._lists) - 1
-            max_idx = len(self._lists[-1])
-        else:
-            max_pos, max_idx = _pos(stop)
-
-        return self._islice(min_pos, min_idx, max_pos, max_idx, reverse)
-
-    def _islice(self, min_pos, min_idx, max_pos, max_idx, reverse):
-        """
-        Returns an iterator that slices `self` using two index pairs,
-        `(min_pos, min_idx)` and `(max_pos, max_idx)`; the first inclusive
-        and the latter exclusive. See `_pos` for details on how an index
-        is converted to an index pair.
-
-        When `reverse` is `True`, values are yielded from the iterator in
-        reverse order.
-        """
-        _lists = self._lists
-
-        if min_pos > max_pos:
-            return iter(())
-        elif min_pos == max_pos and not reverse:
-            return iter(_lists[min_pos][min_idx:max_idx])
-        elif min_pos == max_pos and reverse:
-            return reversed(_lists[min_pos][min_idx:max_idx])
-        elif min_pos + 1 == max_pos and not reverse:
-            return chain(_lists[min_pos][min_idx:], _lists[max_pos][:max_idx])
-        elif min_pos + 1 == max_pos and reverse:
-            return chain(
-                reversed(_lists[max_pos][:max_idx]),
-                reversed(_lists[min_pos][min_idx:]),
-            )
-        elif not reverse:
-            return chain(
-                _lists[min_pos][min_idx:],
-                chain.from_iterable(_lists[(min_pos + 1):max_pos]),
-                _lists[max_pos][:max_idx],
-            )
-
-        temp = map(reversed, reversed(_lists[(min_pos + 1):max_pos]))
-        return chain(
-            reversed(_lists[max_pos][:max_idx]),
-            chain.from_iterable(temp),
-            reversed(_lists[min_pos][min_idx:]),
-        )
-
-    def irange(self, minimum=None, maximum=None, inclusive=(True, True),
-               reverse=False):
-        """
-        Create an iterator of values between `minimum` and `maximum`.
-
-        `inclusive` is a pair of booleans that indicates whether the minimum
-        and maximum ought to be included in the range, respectively. The
-        default is (True, True) such that the range is inclusive of both
-        minimum and maximum.
-
-        Both `minimum` and `maximum` default to `None` which is automatically
-        inclusive of the start and end of the list, respectively.
-
-        When `reverse` is `True` the values are yielded from the iterator in
-        reverse order; `reverse` defaults to `False`.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            return iter(())
-
-        _lists = self._lists
-
-        # Calculate the minimum (pos, idx) pair. By default this location
-        # will be inclusive in our calculation.
-
-        if minimum is None:
-            min_pos = 0
-            min_idx = 0
-        else:
-            if inclusive[0]:
-                min_pos = bisect_left(_maxes, minimum)
-
-                if min_pos == len(_maxes):
-                    return iter(())
-
-                min_idx = bisect_left(_lists[min_pos], minimum)
-            else:
-                min_pos = bisect_right(_maxes, minimum)
-
-                if min_pos == len(_maxes):
-                    return iter(())
-
-                min_idx = bisect_right(_lists[min_pos], minimum)
-
-        # Calculate the maximum (pos, idx) pair. By default this location
-        # will be exclusive in our calculation.
-
-        if maximum is None:
-            max_pos = len(_maxes) - 1
-            max_idx = len(_lists[max_pos])
-        else:
-            if inclusive[1]:
-                max_pos = bisect_right(_maxes, maximum)
-
-                if max_pos == len(_maxes):
-                    max_pos -= 1
-                    max_idx = len(_lists[max_pos])
-                else:
-                    max_idx = bisect_right(_lists[max_pos], maximum)
-            else:
-                max_pos = bisect_left(_maxes, maximum)
-
-                if max_pos == len(_maxes):
-                    max_pos -= 1
-                    max_idx = len(_lists[max_pos])
-                else:
-                    max_idx = bisect_left(_lists[max_pos], maximum)
-
-        return self._islice(min_pos, min_idx, max_pos, max_idx, reverse)
-
-    def __len__(self):
-        """Return the number of elements in the list."""
-        return self._len
-
-    def bisect_left(self, val):
-        """
-        Similar to the *bisect* module in the standard library, this returns an
-        appropriate index to insert *val*. If *val* is already present, the
-        insertion point will be before (to the left of) any existing entries.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            return 0
-
-        pos = bisect_left(_maxes, val)
-
-        if pos == len(_maxes):
-            return self._len
-
-        idx = bisect_left(self._lists[pos], val)
-
-        return self._loc(pos, idx)
-
-    def bisect_right(self, val):
-        """
-        Same as *bisect_left*, but if *val* is already present, the insertion
-        point will be after (to the right of) any existing entries.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            return 0
-
-        pos = bisect_right(_maxes, val)
-
-        if pos == len(_maxes):
-            return self._len
-
-        idx = bisect_right(self._lists[pos], val)
-
-        return self._loc(pos, idx)
-
-    bisect = bisect_right
-    _bisect_right = bisect_right
-
-    def count(self, val):
-        """Return the number of occurrences of *val* in the list."""
-        # pylint: disable=arguments-differ
-        _maxes = self._maxes
-
-        if not _maxes:
-            return 0
-
-        pos_left = bisect_left(_maxes, val)
-
-        if pos_left == len(_maxes):
-            return 0
-
-        _lists = self._lists
-        idx_left = bisect_left(_lists[pos_left], val)
-        pos_right = bisect_right(_maxes, val)
-
-        if pos_right == len(_maxes):
-            return self._len - self._loc(pos_left, idx_left)
-
-        idx_right = bisect_right(_lists[pos_right], val)
-
-        if pos_left == pos_right:
-            return idx_right - idx_left
-
-        right = self._loc(pos_right, idx_right)
-        left = self._loc(pos_left, idx_left)
-
-        return right - left
-
-    def copy(self):
-        """Return a shallow copy of the sorted list."""
-        return self.__class__(self)
-
-    __copy__ = copy
-
-    def append(self, val):
-        """
-        Append the element *val* to the list. Raises a ValueError if the *val*
-        would violate the sort order.
-        """
-        # pylint: disable=arguments-differ
-        _lists = self._lists
-        _maxes = self._maxes
-
-        if not _maxes:
-            _maxes.append(val)
-            _lists.append([val])
-            self._len = 1
-            return
-
-        pos = len(_lists) - 1
-
-        if val < _lists[pos][-1]:
-            msg = '{0!r} not in sort order at index {1}'.format(val, self._len)
-            raise ValueError(msg)
-
-        _maxes[pos] = val
-        _lists[pos].append(val)
-        self._len += 1
-        self._expand(pos)
-
-    def extend(self, values):
-        """
-        Extend the list by appending all elements from the *values*. Raises a
-        ValueError if the sort order would be violated.
-        """
-        _lists = self._lists
-        _maxes = self._maxes
-        _load = self._load
-
-        if not isinstance(values, list):
-            values = list(values)
-
-        if not values:
-            return
-
-        if any(values[pos - 1] > values[pos]
-               for pos in range(1, len(values))):
-            raise ValueError('given sequence not in sort order')
-
-        offset = 0
-
-        if _maxes:
-            if values[0] < _lists[-1][-1]:
-                msg = '{0!r} not in sort order at index {1}'.format(values[0], self._len)
-                raise ValueError(msg)
-
-            if len(_lists[-1]) < self._half:
-                _lists[-1].extend(values[:_load])
-                _maxes[-1] = _lists[-1][-1]
-                offset = _load
-
-        len_lists = len(_lists)
-
-        for idx in range(offset, len(values), _load):
-            _lists.append(values[idx:(idx + _load)])
-            _maxes.append(_lists[-1][-1])
-
-        _index = self._index
-
-        if len_lists == len(_lists):
-            len_index = len(_index)
-            if len_index > 0:
-                len_values = len(values)
-                child = len_index - 1
-                while child:
-                    _index[child] += len_values
-                    child = (child - 1) >> 1
-                _index[0] += len_values
-        else:
-            del _index[:]
-
-        self._len += len(values)
-
-    def insert(self, idx, val):
-        """
-        Insert the element *val* into the list at *idx*. Raises a ValueError if
-        the *val* at *idx* would violate the sort order.
-        """
-        # pylint: disable=arguments-differ
-        _len = self._len
-        _lists = self._lists
-        _maxes = self._maxes
-
-        if idx < 0:
-            idx += _len
-        if idx < 0:
-            idx = 0
-        if idx > _len:
-            idx = _len
-
-        if not _maxes:
-            # The idx must be zero by the inequalities above.
-            _maxes.append(val)
-            _lists.append([val])
-            self._len = 1
-            return
-
-        if not idx:
-            if val > _lists[0][0]:
-                msg = '{0!r} not in sort order at index {1}'.format(val, 0)
-                raise ValueError(msg)
-            else:
-                _lists[0].insert(0, val)
-                self._expand(0)
-                self._len += 1
-                return
-
-        if idx == _len:
-            pos = len(_lists) - 1
-            if _lists[pos][-1] > val:
-                msg = '{0!r} not in sort order at index {1}'.format(val, _len)
-                raise ValueError(msg)
-            else:
-                _lists[pos].append(val)
-                _maxes[pos] = _lists[pos][-1]
-                self._expand(pos)
-                self._len += 1
-                return
-
-        pos, idx = self._pos(idx)
-        idx_before = idx - 1
-        if idx_before < 0:
-            pos_before = pos - 1
-            idx_before = len(_lists[pos_before]) - 1
-        else:
-            pos_before = pos
-
-        before = _lists[pos_before][idx_before]
-        if before <= val <= _lists[pos][idx]:
-            _lists[pos].insert(idx, val)
-            self._expand(pos)
-            self._len += 1
-        else:
-            msg = '{0!r} not in sort order at index {1}'.format(val, idx)
-            raise ValueError(msg)
-
-    def pop(self, idx=-1):
-        """
-        Remove and return item at *idx* (default last).  Raises IndexError if
-        list is empty or index is out of range.  Negative indices are supported,
-        as for slice indices.
-        """
-        # pylint: disable=arguments-differ
-        if not self._len:
-            raise IndexError('pop index out of range')
-
-        _lists = self._lists
-
-        if idx == 0:
-            val = _lists[0][0]
-            self._delete(0, 0)
-            return val
-
-        if idx == -1:
-            pos = len(_lists) - 1
-            loc = len(_lists[pos]) - 1
-            val = _lists[pos][loc]
-            self._delete(pos, loc)
-            return val
-
-        if 0 <= idx < len(_lists[0]):
-            val = _lists[0][idx]
-            self._delete(0, idx)
-            return val
-
-        len_last = len(_lists[-1])
-
-        if -len_last < idx < 0:
-            pos = len(_lists) - 1
-            loc = len_last + idx
-            val = _lists[pos][loc]
-            self._delete(pos, loc)
-            return val
-
-        pos, idx = self._pos(idx)
-        val = _lists[pos][idx]
-        self._delete(pos, idx)
-
-        return val
-
-    def index(self, val, start=None, stop=None):
-        """
-        Return the smallest *k* such that L[k] == val and i <= k < j`.  Raises
-        ValueError if *val* is not present.  *stop* defaults to the end of the
-        list. *start* defaults to the beginning. Negative indices are supported,
-        as for slice indices.
-        """
-        # pylint: disable=arguments-differ
-        _len = self._len
-
-        if not _len:
-            raise ValueError('{0!r} is not in list'.format(val))
-
-        if start is None:
-            start = 0
-        if start < 0:
-            start += _len
-        if start < 0:
-            start = 0
-
-        if stop is None:
-            stop = _len
-        if stop < 0:
-            stop += _len
-        if stop > _len:
-            stop = _len
-
-        if stop <= start:
-            raise ValueError('{0!r} is not in list'.format(val))
-
-        _maxes = self._maxes
-        pos_left = bisect_left(_maxes, val)
-
-        if pos_left == len(_maxes):
-            raise ValueError('{0!r} is not in list'.format(val))
-
-        _lists = self._lists
-        idx_left = bisect_left(_lists[pos_left], val)
-
-        if _lists[pos_left][idx_left] != val:
-            raise ValueError('{0!r} is not in list'.format(val))
-
-        stop -= 1
-        left = self._loc(pos_left, idx_left)
-
-        if start <= left:
-            if left <= stop:
-                return left
-        else:
-            right = self._bisect_right(val) - 1
-
-            if start <= right:
-                return start
-
-        raise ValueError('{0!r} is not in list'.format(val))
-
-    def __add__(self, that):
-        """
-        Return a new sorted list containing all the elements in *self* and
-        *that*. Elements in *that* do not need to be properly ordered with
-        respect to *self*.
-        """
-        values = reduce(iadd, self._lists, [])
-        values.extend(that)
-        return self.__class__(values)
-
-    def __iadd__(self, that):
-        """
-        Update *self* to include all values in *that*. Elements in *that* do not
-        need to be properly ordered with respect to *self*.
-        """
-        self._update(that)
-        return self
-
-    def __mul__(self, that):
-        """
-        Return a new sorted list containing *that* shallow copies of each item
-        in SortedList.
-        """
-        values = reduce(iadd, self._lists, []) * that
-        return self.__class__(values)
-
-    def __imul__(self, that):
-        """
-        Increase the length of the list by appending *that* shallow copies of
-        each item.
-        """
-        values = reduce(iadd, self._lists, []) * that
-        self._clear()
-        self._update(values)
-        return self
-
-    def _make_cmp(self, seq_op, doc):
-        "Make comparator method."
-        def comparer(self, that):
-            "Compare method for sorted list and sequence."
-            # pylint: disable=protected-access
-            if not isinstance(that, Sequence):
-                return NotImplemented
-
-            self_len = self._len
-            len_that = len(that)
-
-            if self_len != len_that:
-                if seq_op is op.eq:
-                    return False
-                if seq_op is op.ne:
-                    return True
-
-            for alpha, beta in zip(self, that):
-                if alpha != beta:
-                    return seq_op(alpha, beta)
-
-            return seq_op(self_len, len_that)
-
-        comparer.__name__ = '__{0}__'.format(seq_op.__name__)
-        doc_str = 'Return `True` if and only if Sequence is {0} `that`.'
-        comparer.__doc__ = doc_str.format(doc)
-
-        return comparer
-
-    __eq__ = _make_cmp(None, op.eq, 'equal to')
-    __ne__ = _make_cmp(None, op.ne, 'not equal to')
-    __lt__ = _make_cmp(None, op.lt, 'less than')
-    __gt__ = _make_cmp(None, op.gt, 'greater than')
-    __le__ = _make_cmp(None, op.le, 'less than or equal to')
-    __ge__ = _make_cmp(None, op.ge, 'greater than or equal to')
-
-    @recursive_repr
-    def __repr__(self):
-        """Return string representation of sequence."""
-        return '{0}({1!r})'.format(type(self).__name__, list(self))
-
-    def _check(self):
-        try:
-            # Check load parameters.
-
-            assert self._load >= 4
-            assert self._half == (self._load >> 1)
-            assert self._dual == (self._load << 1)
-
-            # Check empty sorted list case.
-
-            if self._maxes == []:
-                assert self._lists == []
-                return
-
-            assert self._maxes and self._lists
-
-            # Check all sublists are sorted.
-
-            assert all(sublist[pos - 1] <= sublist[pos]
-                       for sublist in self._lists
-                       for pos in range(1, len(sublist)))
-
-            # Check beginning/end of sublists are sorted.
-
-            for pos in range(1, len(self._lists)):
-                assert self._lists[pos - 1][-1] <= self._lists[pos][0]
-
-            # Check length of _maxes and _lists match.
-
-            assert len(self._maxes) == len(self._lists)
-
-            # Check _maxes is a map of _lists.
-
-            assert all(self._maxes[pos] == self._lists[pos][-1]
-                       for pos in range(len(self._maxes)))
-
-            # Check load level is less than _dual.
-
-            assert all(len(sublist) <= self._dual for sublist in self._lists)
-
-            # Check load level is greater than _half for all
-            # but the last sublist.
-
-            assert all(len(self._lists[pos]) >= self._half
-                       for pos in range(0, len(self._lists) - 1))
-
-            # Check length.
-
-            assert self._len == sum(len(sublist) for sublist in self._lists)
-
-            # Check index.
-
-            if self._index:
-                assert len(self._index) == self._offset + len(self._lists)
-                assert self._len == self._index[0]
-
-                def test_offset_pos(pos):
-                    "Test positional indexing offset."
-                    from_index = self._index[self._offset + pos]
-                    return from_index == len(self._lists[pos])
-
-                assert all(test_offset_pos(pos)
-                           for pos in range(len(self._lists)))
-
-                for pos in range(self._offset):
-                    child = (pos << 1) + 1
-                    if child >= len(self._index):
-                        assert self._index[pos] == 0
-                    elif child + 1 == len(self._index):
-                        assert self._index[pos] == self._index[child]
-                    else:
-                        child_sum = self._index[child] + self._index[child + 1]
-                        assert self._index[pos] == child_sum
-
-        except:
-            import sys
-            import traceback
-
-            traceback.print_exc(file=sys.stdout)
-
-            print('len', self._len)
-            print('load', self._load, self._half, self._dual)
-            print('offset', self._offset)
-            print('len_index', len(self._index))
-            print('index', self._index)
-            print('len_maxes', len(self._maxes))
-            print('maxes', self._maxes)
-            print('len_lists', len(self._lists))
-            print('lists', self._lists)
-
-            raise
-
-def identity(value):
-    "Identity function."
-    return value
-
-class SortedListWithKey(SortedList):
-    """
-    SortedListWithKey provides most of the same methods as a list but keeps
-    the items in sorted order.
-    """
-    # pylint: disable=too-many-ancestors,abstract-method
-    def __init__(self, iterable=None, key=identity):
-        """SortedListWithKey provides most of the same methods as list but keeps the
-        items in sorted order.
-
-        An optional *iterable* provides an initial series of items to populate
-        the SortedListWithKey.
-
-        An optional *key* argument defines a callable that, like the `key`
-        argument to Python's `sorted` function, extracts a comparison key from
-        each element. The default is the identity function.
-        """
-        # pylint: disable=super-init-not-called
-        self._len = 0
-        self._lists = []
-        self._keys = []
-        self._maxes = []
-        self._index = []
-        self._key = key
-        self._load = LOAD
-        self._half = LOAD >> 1
-        self._dual = LOAD << 1
-        self._offset = 0
-
-        if iterable is not None:
-            self._update(iterable)
-
-    def __new__(cls, iterable=None, key=identity):
-        return object.__new__(cls)
-
-    @property
-    def key(self):
-        """Key function used to extract comparison key for sorting."""
-        return self._key
-
-    def clear(self):
-        """Remove all the elements from the list."""
-        self._len = 0
-        del self._lists[:]
-        del self._keys[:]
-        del self._maxes[:]
-        del self._index[:]
-
-    _clear = clear
-
-    def add(self, val):
-        """Add the element *val* to the list."""
-        _lists = self._lists
-        _keys = self._keys
-        _maxes = self._maxes
-
-        key = self._key(val)
-
-        if _maxes:
-            pos = bisect_right(_maxes, key)
-
-            if pos == len(_maxes):
-                pos -= 1
-                _lists[pos].append(val)
-                _keys[pos].append(key)
-                _maxes[pos] = key
-            else:
-                idx = bisect_right(_keys[pos], key)
-                _lists[pos].insert(idx, val)
-                _keys[pos].insert(idx, key)
-
-            self._expand(pos)
-        else:
-            _lists.append([val])
-            _keys.append([key])
-            _maxes.append(key)
-
-        self._len += 1
-
-    def _expand(self, pos):
-        """Splits sublists that are more than double the load level.
-
-        Updates the index when the sublist length is less than double the load
-        level. This requires incrementing the nodes in a traversal from the
-        leaf node to the root. For an example traversal see self._loc.
-
-        """
-        _lists = self._lists
-        _keys = self._keys
-        _index = self._index
-
-        if len(_keys[pos]) > self._dual:
-            _maxes = self._maxes
-            _load = self._load
-
-            _lists_pos = _lists[pos]
-            _keys_pos = _keys[pos]
-            half = _lists_pos[_load:]
-            half_keys = _keys_pos[_load:]
-            del _lists_pos[_load:]
-            del _keys_pos[_load:]
-            _maxes[pos] = _keys_pos[-1]
-
-            _lists.insert(pos + 1, half)
-            _keys.insert(pos + 1, half_keys)
-            _maxes.insert(pos + 1, half_keys[-1])
-
-            del _index[:]
-        else:
-            if _index:
-                child = self._offset + pos
-                while child:
-                    _index[child] += 1
-                    child = (child - 1) >> 1
-                _index[0] += 1
-
-    def update(self, iterable):
-        """Update the list by adding all elements from *iterable*."""
-        _lists = self._lists
-        _keys = self._keys
-        _maxes = self._maxes
-        values = sorted(iterable, key=self._key)
-
-        if _maxes:
-            if len(values) * 4 >= self._len:
-                values.extend(chain.from_iterable(_lists))
-                values.sort(key=self._key)
-                self._clear()
-            else:
-                _add = self.add
-                for val in values:
-                    _add(val)
-                return
-
-        _load = self._load
-        _lists.extend(values[pos:(pos + _load)]
-                      for pos in range(0, len(values), _load))
-        _keys.extend(list(map(self._key, _list)) for _list in _lists)
-        _maxes.extend(sublist[-1] for sublist in _keys)
-        self._len = len(values)
-        del self._index[:]
-
-    _update = update
-
-    def __contains__(self, val):
-        """Return True if and only if *val* is an element in the list."""
-        _maxes = self._maxes
-
-        if not _maxes:
-            return False
-
-        key = self._key(val)
-        pos = bisect_left(_maxes, key)
-
-        if pos == len(_maxes):
-            return False
-
-        _lists = self._lists
-        _keys = self._keys
-
-        idx = bisect_left(_keys[pos], key)
-
-        len_keys = len(_keys)
-        len_sublist = len(_keys[pos])
-
-        while True:
-            if _keys[pos][idx] != key:
-                return False
-            if _lists[pos][idx] == val:
-                return True
-            idx += 1
-            if idx == len_sublist:
-                pos += 1
-                if pos == len_keys:
-                    return False
-                len_sublist = len(_keys[pos])
-                idx = 0
-
-    def discard(self, val):
-        """
-        Remove the first occurrence of *val*.
-
-        If *val* is not a member, does nothing.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            return
-
-        key = self._key(val)
-        pos = bisect_left(_maxes, key)
-
-        if pos == len(_maxes):
-            return
-
-        _lists = self._lists
-        _keys = self._keys
-        idx = bisect_left(_keys[pos], key)
-        len_keys = len(_keys)
-        len_sublist = len(_keys[pos])
-
-        while True:
-            if _keys[pos][idx] != key:
-                return
-            if _lists[pos][idx] == val:
-                self._delete(pos, idx)
-                return
-            idx += 1
-            if idx == len_sublist:
-                pos += 1
-                if pos == len_keys:
-                    return
-                len_sublist = len(_keys[pos])
-                idx = 0
-
-    def remove(self, val):
-        """
-        Remove first occurrence of *val*.
-
-        Raises ValueError if *val* is not present.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            raise ValueError('{0!r} not in list'.format(val))
-
-        key = self._key(val)
-        pos = bisect_left(_maxes, key)
-
-        if pos == len(_maxes):
-            raise ValueError('{0!r} not in list'.format(val))
-
-        _lists = self._lists
-        _keys = self._keys
-        idx = bisect_left(_keys[pos], key)
-        len_keys = len(_keys)
-        len_sublist = len(_keys[pos])
-
-        while True:
-            if _keys[pos][idx] != key:
-                raise ValueError('{0!r} not in list'.format(val))
-            if _lists[pos][idx] == val:
-                self._delete(pos, idx)
-                return
-            idx += 1
-            if idx == len_sublist:
-                pos += 1
-                if pos == len_keys:
-                    raise ValueError('{0!r} not in list'.format(val))
-                len_sublist = len(_keys[pos])
-                idx = 0
-
-    def _delete(self, pos, idx):
-        """
-        Delete the item at the given (pos, idx).
-
-        Combines lists that are less than half the load level.
-
-        Updates the index when the sublist length is more than half the load
-        level. This requires decrementing the nodes in a traversal from the leaf
-        node to the root. For an example traversal see self._loc.
-        """
-        _lists = self._lists
-        _keys = self._keys
-        _maxes = self._maxes
-        _index = self._index
-        keys_pos = _keys[pos]
-        lists_pos = _lists[pos]
-
-        del keys_pos[idx]
-        del lists_pos[idx]
-        self._len -= 1
-
-        len_keys_pos = len(keys_pos)
-
-        if len_keys_pos > self._half:
-
-            _maxes[pos] = keys_pos[-1]
-
-            if _index:
-                child = self._offset + pos
-                while child > 0:
-                    _index[child] -= 1
-                    child = (child - 1) >> 1
-                _index[0] -= 1
-
-        elif len(_keys) > 1:
-
-            if not pos:
-                pos += 1
-
-            prev = pos - 1
-            _keys[prev].extend(_keys[pos])
-            _lists[prev].extend(_lists[pos])
-            _maxes[prev] = _keys[prev][-1]
-
-            del _lists[pos]
-            del _keys[pos]
-            del _maxes[pos]
-            del _index[:]
-
-            self._expand(prev)
-
-        elif len_keys_pos:
-
-            _maxes[pos] = keys_pos[-1]
-
-        else:
-
-            del _lists[pos]
-            del _keys[pos]
-            del _maxes[pos]
-            del _index[:]
-
-    def _check_order(self, idx, key, val):
-        # pylint: disable=arguments-differ
-        _len = self._len
-        _keys = self._keys
-
-        pos, loc = self._pos(idx)
-
-        if idx < 0:
-            idx += _len
-
-        # Check that the inserted value is not less than the
-        # previous value.
-
-        if idx > 0:
-            idx_prev = loc - 1
-            pos_prev = pos
-
-            if idx_prev < 0:
-                pos_prev -= 1
-                idx_prev = len(_keys[pos_prev]) - 1
-
-            if _keys[pos_prev][idx_prev] > key:
-                msg = '{0!r} not in sort order at index {1}'.format(val, idx)
-                raise ValueError(msg)
-
-        # Check that the inserted value is not greater than
-        # the previous value.
-
-        if idx < (_len - 1):
-            idx_next = loc + 1
-            pos_next = pos
-
-            if idx_next == len(_keys[pos_next]):
-                pos_next += 1
-                idx_next = 0
-
-            if _keys[pos_next][idx_next] < key:
-                msg = '{0!r} not in sort order at index {1}'.format(val, idx)
-                raise ValueError(msg)
-
-    def __setitem__(self, index, value):
-        """Replace the item at position *index* with *value*.
-
-        Supports slice notation. Raises a :exc:`ValueError` if the sort order
-        would be violated. When used with a slice and iterable, the
-        :exc:`ValueError` is raised before the list is mutated if the sort
-        order would be violated by the operation.
-
-        """
-        # pylint: disable=too-many-locals
-        _lists = self._lists
-        _keys = self._keys
-        _maxes = self._maxes
-        _check_order = self._check_order
-        _pos = self._pos
-
-        if isinstance(index, slice):
-            _len = self._len
-            start, stop, step = index.indices(_len)
-            indices = range(start, stop, step)
-
-            # Copy value to avoid aliasing issues with self and cases where an
-            # iterator is given.
-
-            values = tuple(value)
-
-            if step != 1:
-                if len(values) != len(indices):
-                    raise ValueError(
-                        'attempt to assign sequence of size %s'
-                        ' to extended slice of size %s'
-                        % (len(values), len(indices)))
-
-                # Keep a log of values that are set so that we can
-                # roll back changes if ordering is violated.
-
-                log = []
-                _append = log.append
-
-                for idx, val in zip(indices, values):
-                    pos, loc = _pos(idx)
-                    key = self._key(val)
-                    _append((idx, _keys[pos][loc], key, _lists[pos][loc], val))
-                    _keys[pos][loc] = key
-                    _lists[pos][loc] = val
-                    if len(_keys[pos]) == (loc + 1):
-                        _maxes[pos] = key
-
-                try:
-                    # Validate ordering of new values.
-
-                    for idx, oldkey, newkey, oldval, newval in log:
-                        _check_order(idx, newkey, newval)
-
-                except ValueError:
-
-                    # Roll back changes from log.
-
-                    for idx, oldkey, newkey, oldval, newval in log:
-                        pos, loc = _pos(idx)
-                        _keys[pos][loc] = oldkey
-                        _lists[pos][loc] = oldval
-                        if len(_keys[pos]) == (loc + 1):
-                            _maxes[pos] = oldkey
-
-                    raise
-            else:
-                if start == 0 and stop == self._len:
-                    self._clear()
-                    return self._update(values)
-
-                if stop < start:
-                    # When calculating indices, stop may be less than start.
-                    # For example: ...[5:3:1] results in slice(5, 3, 1) which
-                    # is a valid but not useful stop index.
-                    stop = start
-
-                if values:
-
-                    # Check that given values are ordered properly.
-
-                    keys = tuple(map(self._key, values))
-                    alphas = iter(keys)
-                    betas = iter(keys)
-                    next(betas)
-                    pairs = zip(alphas, betas)
-
-                    if not all(alpha <= beta for alpha, beta in pairs):
-                        raise ValueError('given values not in sort order')
-
-                    # Check ordering in context of sorted list.
-
-                    if start:
-                        pos, loc = _pos(start - 1)
-                        if _keys[pos][loc] > keys[0]:
-                            msg = '{0!r} not in sort order at index {1}'.format(
-                                values[0], start)
-                            raise ValueError(msg)
-
-                    if stop != _len:
-                        pos, loc = _pos(stop)
-                        if _keys[pos][loc] < keys[-1]:
-                            msg = '{0!r} not in sort order at index {1}'.format(
-                                values[-1], stop)
-                            raise ValueError(msg)
-
-                # Delete the existing values.
-
-                self._delitem(index)
-
-                # Insert the new values.
-
-                _insert = self.insert
-                for idx, val in enumerate(values):
-                    _insert(start + idx, val)
-        else:
-            pos, loc = _pos(index)
-            key = self._key(value)
-            _check_order(index, key, value)
-            _lists[pos][loc] = value
-            _keys[pos][loc] = key
-            if len(_lists[pos]) == (loc + 1):
-                _maxes[pos] = key
-
-    def irange(self, minimum=None, maximum=None, inclusive=(True, True),
-               reverse=False):
-        """
-        Create an iterator of values between `minimum` and `maximum`.
-
-        `inclusive` is a pair of booleans that indicates whether the minimum
-        and maximum ought to be included in the range, respectively. The
-        default is (True, True) such that the range is inclusive of both
-        minimum and maximum.
-
-        Both `minimum` and `maximum` default to `None` which is automatically
-        inclusive of the start and end of the list, respectively.
-
-        When `reverse` is `True` the values are yielded from the iterator in
-        reverse order; `reverse` defaults to `False`.
-        """
-        minimum = self._key(minimum) if minimum is not None else None
-        maximum = self._key(maximum) if maximum is not None else None
-        return self._irange_key(
-            min_key=minimum, max_key=maximum,
-            inclusive=inclusive, reverse=reverse,
-        )
-
-    def irange_key(self, min_key=None, max_key=None, inclusive=(True, True),
-                   reverse=False):
-        """
-        Create an iterator of values between `min_key` and `max_key`.
-
-        `inclusive` is a pair of booleans that indicates whether the min_key
-        and max_key ought to be included in the range, respectively. The
-        default is (True, True) such that the range is inclusive of both
-        `min_key` and `max_key`.
-
-        Both `min_key` and `max_key` default to `None` which is automatically
-        inclusive of the start and end of the list, respectively.
-
-        When `reverse` is `True` the values are yielded from the iterator in
-        reverse order; `reverse` defaults to `False`.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            return iter(())
-
-        _keys = self._keys
-
-        # Calculate the minimum (pos, idx) pair. By default this location
-        # will be inclusive in our calculation.
-
-        if min_key is None:
-            min_pos = 0
-            min_idx = 0
-        else:
-            if inclusive[0]:
-                min_pos = bisect_left(_maxes, min_key)
-
-                if min_pos == len(_maxes):
-                    return iter(())
-
-                min_idx = bisect_left(_keys[min_pos], min_key)
-            else:
-                min_pos = bisect_right(_maxes, min_key)
-
-                if min_pos == len(_maxes):
-                    return iter(())
-
-                min_idx = bisect_right(_keys[min_pos], min_key)
-
-        # Calculate the maximum (pos, idx) pair. By default this location
-        # will be exclusive in our calculation.
-
-        if max_key is None:
-            max_pos = len(_maxes) - 1
-            max_idx = len(_keys[max_pos])
-        else:
-            if inclusive[1]:
-                max_pos = bisect_right(_maxes, max_key)
-
-                if max_pos == len(_maxes):
-                    max_pos -= 1
-                    max_idx = len(_keys[max_pos])
-                else:
-                    max_idx = bisect_right(_keys[max_pos], max_key)
-            else:
-                max_pos = bisect_left(_maxes, max_key)
-
-                if max_pos == len(_maxes):
-                    max_pos -= 1
-                    max_idx = len(_keys[max_pos])
-                else:
-                    max_idx = bisect_left(_keys[max_pos], max_key)
-
-        return self._islice(min_pos, min_idx, max_pos, max_idx, reverse)
-
-    _irange_key = irange_key
-
-    def bisect_left(self, val):
-        """
-        Similar to the *bisect* module in the standard library, this returns an
-        appropriate index to insert *val*. If *val* is already present, the
-        insertion point will be before (to the left of) any existing entries.
-        """
-        return self._bisect_key_left(self._key(val))
-
-    def bisect_right(self, val):
-        """
-        Same as *bisect_left*, but if *val* is already present, the insertion
-        point will be after (to the right of) any existing entries.
-        """
-        return self._bisect_key_right(self._key(val))
-
-    bisect = bisect_right
-
-    def bisect_key_left(self, key):
-        """
-        Similar to the *bisect* module in the standard library, this returns an
-        appropriate index to insert a value with a given *key*. If values with
-        *key* are already present, the insertion point will be before (to the
-        left of) any existing entries.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            return 0
-
-        pos = bisect_left(_maxes, key)
-
-        if pos == len(_maxes):
-            return self._len
-
-        idx = bisect_left(self._keys[pos], key)
-
-        return self._loc(pos, idx)
-
-    _bisect_key_left = bisect_key_left
-
-    def bisect_key_right(self, key):
-        """
-        Same as *bisect_key_left*, but if *key* is already present, the insertion
-        point will be after (to the right of) any existing entries.
-        """
-        _maxes = self._maxes
-
-        if not _maxes:
-            return 0
-
-        pos = bisect_right(_maxes, key)
-
-        if pos == len(_maxes):
-            return self._len
-
-        idx = bisect_right(self._keys[pos], key)
-
-        return self._loc(pos, idx)
-
-    bisect_key = bisect_key_right
-    _bisect_key_right = bisect_key_right
-
-    def count(self, val):
-        """Return the number of occurrences of *val* in the list."""
-        _maxes = self._maxes
-
-        if not _maxes:
-            return 0
-
-        key = self._key(val)
-        pos = bisect_left(_maxes, key)
-
-        if pos == len(_maxes):
-            return 0
-
-        _lists = self._lists
-        _keys = self._keys
-        idx = bisect_left(_keys[pos], key)
-        total = 0
-        len_keys = len(_keys)
-        len_sublist = len(_keys[pos])
-
-        while True:
-            if _keys[pos][idx] != key:
-                return total
-            if _lists[pos][idx] == val:
-                total += 1
-            idx += 1
-            if idx == len_sublist:
-                pos += 1
-                if pos == len_keys:
-                    return total
-                len_sublist = len(_keys[pos])
-                idx = 0
-
-    def copy(self):
-        """Return a shallow copy of the sorted list."""
-        return self.__class__(self, key=self._key)
-
-    __copy__ = copy
-
-    def append(self, val):
-        """
-        Append the element *val* to the list. Raises a ValueError if the *val*
-        would violate the sort order.
-        """
-        # pylint: disable=arguments-differ
-        _lists = self._lists
-        _keys = self._keys
-        _maxes = self._maxes
-        key = self._key(val)
-
-        if not _maxes:
-            _maxes.append(key)
-            _keys.append([key])
-            _lists.append([val])
-            self._len = 1
-            return
-
-        pos = len(_keys) - 1
-
-        if key < _keys[pos][-1]:
-            msg = '{0!r} not in sort order at index {1}'.format(val, self._len)
-            raise ValueError(msg)
-
-        _lists[pos].append(val)
-        _keys[pos].append(key)
-        _maxes[pos] = key
-        self._len += 1
-        self._expand(pos)
-
-    def extend(self, values):
-        """
-        Extend the list by appending all elements from the *values*. Raises a
-        ValueError if the sort order would be violated.
-        """
-        _lists = self._lists
-        _keys = self._keys
-        _maxes = self._maxes
-        _load = self._load
-
-        if not isinstance(values, list):
-            values = list(values)
-
-        keys = list(map(self._key, values))
-
-        if any(keys[pos - 1] > keys[pos]
-               for pos in range(1, len(keys))):
-            raise ValueError('given sequence not in sort order')
-
-        offset = 0
-
-        if _maxes:
-            if keys[0] < _keys[-1][-1]:
-                msg = '{0!r} not in sort order at index {1}'.format(values[0], self._len)
-                raise ValueError(msg)
-
-            if len(_keys[-1]) < self._half:
-                _lists[-1].extend(values[:_load])
-                _keys[-1].extend(keys[:_load])
-                _maxes[-1] = _keys[-1][-1]
-                offset = _load
-
-        len_keys = len(_keys)
-
-        for idx in range(offset, len(keys), _load):
-            _lists.append(values[idx:(idx + _load)])
-            _keys.append(keys[idx:(idx + _load)])
-            _maxes.append(_keys[-1][-1])
-
-        _index = self._index
-
-        if len_keys == len(_keys):
-            len_index = len(_index)
-            if len_index > 0:
-                len_values = len(values)
-                child = len_index - 1
-                while child:
-                    _index[child] += len_values
-                    child = (child - 1) >> 1
-                _index[0] += len_values
-        else:
-            del _index[:]
-
-        self._len += len(values)
-
-    def insert(self, idx, val):
-        """
-        Insert the element *val* into the list at *idx*. Raises a ValueError if
-        the *val* at *idx* would violate the sort order.
-        """
-        _len = self._len
-        _lists = self._lists
-        _keys = self._keys
-        _maxes = self._maxes
-
-        if idx < 0:
-            idx += _len
-        if idx < 0:
-            idx = 0
-        if idx > _len:
-            idx = _len
-
-        key = self._key(val)
-
-        if not _maxes:
-            self._len = 1
-            _lists.append([val])
-            _keys.append([key])
-            _maxes.append(key)
-            return
-
-        if not idx:
-            if key > _keys[0][0]:
-                msg = '{0!r} not in sort order at index {1}'.format(val, 0)
-                raise ValueError(msg)
-            else:
-                self._len += 1
-                _lists[0].insert(0, val)
-                _keys[0].insert(0, key)
-                self._expand(0)
-                return
-
-        if idx == _len:
-            pos = len(_keys) - 1
-            if _keys[pos][-1] > key:
-                msg = '{0!r} not in sort order at index {1}'.format(val, _len)
-                raise ValueError(msg)
-            else:
-                self._len += 1
-                _lists[pos].append(val)
-                _keys[pos].append(key)
-                _maxes[pos] = _keys[pos][-1]
-                self._expand(pos)
-                return
-
-        pos, idx = self._pos(idx)
-        idx_before = idx - 1
-        if idx_before < 0:
-            pos_before = pos - 1
-            idx_before = len(_keys[pos_before]) - 1
-        else:
-            pos_before = pos
-
-        before = _keys[pos_before][idx_before]
-        if before <= key <= _keys[pos][idx]:
-            self._len += 1
-            _lists[pos].insert(idx, val)
-            _keys[pos].insert(idx, key)
-            self._expand(pos)
-        else:
-            msg = '{0!r} not in sort order at index {1}'.format(val, idx)
-            raise ValueError(msg)
-
-    def index(self, val, start=None, stop=None):
-        """
-        Return the smallest *k* such that L[k] == val and i <= k < j`.  Raises
-        ValueError if *val* is not present.  *stop* defaults to the end of the
-        list. *start* defaults to the beginning. Negative indices are supported,
-        as for slice indices.
-        """
-        _len = self._len
-
-        if not _len:
-            raise ValueError('{0!r} is not in list'.format(val))
-
-        if start is None:
-            start = 0
-        if start < 0:
-            start += _len
-        if start < 0:
-            start = 0
-
-        if stop is None:
-            stop = _len
-        if stop < 0:
-            stop += _len
-        if stop > _len:
-            stop = _len
-
-        if stop <= start:
-            raise ValueError('{0!r} is not in list'.format(val))
-
-        _maxes = self._maxes
-        key = self._key(val)
-        pos = bisect_left(_maxes, key)
-
-        if pos == len(_maxes):
-            raise ValueError('{0!r} is not in list'.format(val))
-
-        stop -= 1
-        _lists = self._lists
-        _keys = self._keys
-        idx = bisect_left(_keys[pos], key)
-        len_keys = len(_keys)
-        len_sublist = len(_keys[pos])
-
-        while True:
-            if _keys[pos][idx] != key:
-                raise ValueError('{0!r} is not in list'.format(val))
-            if _lists[pos][idx] == val:
-                loc = self._loc(pos, idx)
-                if start <= loc <= stop:
-                    return loc
-                elif loc > stop:
-                    break
-            idx += 1
-            if idx == len_sublist:
-                pos += 1
-                if pos == len_keys:
-                    raise ValueError('{0!r} is not in list'.format(val))
-                len_sublist = len(_keys[pos])
-                idx = 0
-
-        raise ValueError('{0!r} is not in list'.format(val))
-
-    def __add__(self, that):
-        """
-        Return a new sorted list containing all the elements in *self* and
-        *that*. Elements in *that* do not need to be properly ordered with
-        respect to *self*.
-        """
-        values = reduce(iadd, self._lists, [])
-        values.extend(that)
-        return self.__class__(values, key=self._key)
-
-    def __mul__(self, that):
-        """
-        Return a new sorted list containing *that* shallow copies of each item
-        in SortedListWithKey.
-        """
-        values = reduce(iadd, self._lists, []) * that
-        return self.__class__(values, key=self._key)
-
-    def __imul__(self, that):
-        """
-        Increase the length of the list by appending *that* shallow copies of
-        each item.
-        """
-        values = reduce(iadd, self._lists, []) * that
-        self._clear()
-        self._update(values)
-        return self
-
-    @recursive_repr
-    def __repr__(self):
-        """Return string representation of sequence."""
-        name = type(self).__name__
-        values = list(self)
-        _key = self._key
-        return '{0}({1!r}, key={2!r})'.format(name, values, _key)
-
-    def _check(self):
-        try:
-            # Check load parameters.
-
-            assert self._load >= 4
-            assert self._half == (self._load >> 1)
-            assert self._dual == (self._load << 1)
-
-            # Check empty sorted list case.
-
-            if self._maxes == []:
-                assert self._keys == []
-                assert self._lists == []
-                return
-
-            assert self._maxes and self._keys and self._lists
-
-            # Check all sublists are sorted.
-
-            assert all(sublist[pos - 1] <= sublist[pos]
-                       for sublist in self._keys
-                       for pos in range(1, len(sublist)))
-
-            # Check beginning/end of sublists are sorted.
-
-            for pos in range(1, len(self._keys)):
-                assert self._keys[pos - 1][-1] <= self._keys[pos][0]
-
-            # Check length of _maxes and _lists match.
-
-            assert len(self._maxes) == len(self._lists) == len(self._keys)
-
-            # Check _keys matches _key mapped to _lists.
-
-            assert all(len(val_list) == len(key_list)
-                       for val_list, key_list in zip(self._lists, self._keys))
-            assert all(self._key(val) == key for val, key in
-                       zip((_val for _val_list in self._lists for _val in _val_list),
-                           (_key for _key_list in self._keys for _key in _key_list)))
-
-            # Check _maxes is a map of _keys.
-
-            assert all(self._maxes[pos] == self._keys[pos][-1]
-                       for pos in range(len(self._maxes)))
-
-            # Check load level is less than _dual.
-
-            assert all(len(sublist) <= self._dual for sublist in self._lists)
-
-            # Check load level is greater than _half for all
-            # but the last sublist.
-
-            assert all(len(self._lists[pos]) >= self._half
-                       for pos in range(0, len(self._lists) - 1))
-
-            # Check length.
-
-            assert self._len == sum(len(sublist) for sublist in self._lists)
-
-            # Check index.
-
-            if self._index:
-                assert len(self._index) == self._offset + len(self._lists)
-                assert self._len == self._index[0]
-
-                def test_offset_pos(pos):
-                    "Test positional indexing offset."
-                    from_index = self._index[self._offset + pos]
-                    return from_index == len(self._lists[pos])
-
-                assert all(test_offset_pos(pos)
-                           for pos in range(len(self._lists)))
-
-                for pos in range(self._offset):
-                    child = (pos << 1) + 1
-                    if self._index[pos] == 0:
-                        assert child >= len(self._index)
-                    elif child + 1 == len(self._index):
-                        assert self._index[pos] == self._index[child]
-                    else:
-                        child_sum = self._index[child] + self._index[child + 1]
-                        assert self._index[pos] == child_sum
-
-        except:
-            import sys
-            import traceback
-
-            traceback.print_exc(file=sys.stdout)
-
-            print('len', self._len)
-            print('load', self._load, self._half, self._dual)
-            print('offset', self._offset)
-            print('len_index', len(self._index))
-            print('index', self._index)
-            print('len_maxes', len(self._maxes))
-            print('maxes', self._maxes)
-            print('len_keys', len(self._keys))
-            print('keys', self._keys)
-            print('len_lists', len(self._lists))
-            print('lists', self._lists)
-
-            raise
diff --git a/python/ovs/compat/sortedcontainers/sortedset.py b/python/ovs/compat/sortedcontainers/sortedset.py
deleted file mode 100644
index 6d82b387b..000000000
--- a/python/ovs/compat/sortedcontainers/sortedset.py
+++ /dev/null
@@ -1,327 +0,0 @@ 
-"""Sorted set implementation.
-
-"""
-
-from collections import Set, MutableSet, Sequence
-from itertools import chain
-import operator as op
-
-from .sortedlist import SortedList, recursive_repr, SortedListWithKey
-
-class SortedSet(MutableSet, Sequence):
-    """
-    A `SortedSet` provides the same methods as a `set`.  Additionally, a
-    `SortedSet` maintains its items in sorted order, allowing the `SortedSet` to
-    be indexed.
-
-    Unlike a `set`, a `SortedSet` requires items be hashable and comparable.
-    """
-    # pylint: disable=too-many-ancestors
-    def __init__(self, iterable=None, key=None):
-        """
-        A `SortedSet` provides the same methods as a `set`.  Additionally, a
-        `SortedSet` maintains its items in sorted order, allowing the
-        `SortedSet` to be indexed.
-
-        An optional *iterable* provides an initial series of items to populate
-        the `SortedSet`.
-
-        An optional *key* argument defines a callable that, like the `key`
-        argument to Python's `sorted` function, extracts a comparison key from
-        each set item. If no function is specified, the default compares the
-        set items directly.
-        """
-        self._key = key
-
-        if not hasattr(self, '_set'):
-            self._set = set()
-
-        _set = self._set
-        self.isdisjoint = _set.isdisjoint
-        self.issubset = _set.issubset
-        self.issuperset = _set.issuperset
-
-        if key is None:
-            self._list = SortedList(self._set)
-        else:
-            self._list = SortedListWithKey(self._set, key=key)
-
-        _list = self._list
-        self.bisect_left = _list.bisect_left
-        self.bisect = _list.bisect
-        self.bisect_right = _list.bisect_right
-        self.index = _list.index
-        self.irange = _list.irange
-        self.islice = _list.islice
-        self._reset = _list._reset  # pylint: disable=protected-access
-
-        if key is not None:
-            self.bisect_key_left = _list.bisect_key_left
-            self.bisect_key_right = _list.bisect_key_right
-            self.bisect_key = _list.bisect_key
-            self.irange_key = _list.irange_key
-
-        if iterable is not None:
-            self._update(iterable)
-
-    @property
-    def key(self):
-        """Key function used to extract comparison key for sorting."""
-        return self._key
-
-    @classmethod
-    def _fromset(cls, values, key=None):
-        """Initialize sorted set from existing set."""
-        sorted_set = object.__new__(cls)
-        sorted_set._set = values  # pylint: disable=protected-access
-        sorted_set.__init__(key=key)
-        return sorted_set
-
-    def __contains__(self, value):
-        """Return True if and only if *value* is an element in the set."""
-        return value in self._set
-
-    def __getitem__(self, index):
-        """
-        Return the element at position *index*.
-
-        Supports slice notation and negative indexes.
-        """
-        return self._list[index]
-
-    def __delitem__(self, index):
-        """
-        Remove the element at position *index*.
-
-        Supports slice notation and negative indexes.
-        """
-        _set = self._set
-        _list = self._list
-        if isinstance(index, slice):
-            values = _list[index]
-            _set.difference_update(values)
-        else:
-            value = _list[index]
-            _set.remove(value)
-        del _list[index]
-
-    def _make_cmp(self, set_op, doc):
-        "Make comparator method."
-        def comparer(self, that):
-            "Compare method for sorted set and set-like object."
-            # pylint: disable=protected-access
-            if isinstance(that, SortedSet):
-                return set_op(self._set, that._set)
-            elif isinstance(that, Set):
-                return set_op(self._set, that)
-            return NotImplemented
-
-        comparer.__name__ = '__{0}__'.format(set_op.__name__)
-        doc_str = 'Return True if and only if Set is {0} `that`.'
-        comparer.__doc__ = doc_str.format(doc)
-
-        return comparer
-
-    __eq__ = _make_cmp(None, op.eq, 'equal to')
-    __ne__ = _make_cmp(None, op.ne, 'not equal to')
-    __lt__ = _make_cmp(None, op.lt, 'a proper subset of')
-    __gt__ = _make_cmp(None, op.gt, 'a proper superset of')
-    __le__ = _make_cmp(None, op.le, 'a subset of')
-    __ge__ = _make_cmp(None, op.ge, 'a superset of')
-
-    def __len__(self):
-        """Return the number of elements in the set."""
-        return len(self._set)
-
-    def __iter__(self):
-        """
-        Return an iterator over the Set. Elements are iterated in their sorted
-        order.
-
-        Iterating the Set while adding or deleting values may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return iter(self._list)
-
-    def __reversed__(self):
-        """
-        Return an iterator over the Set. Elements are iterated in their reverse
-        sorted order.
-
-        Iterating the Set while adding or deleting values may raise a
-        `RuntimeError` or fail to iterate over all entries.
-        """
-        return reversed(self._list)
-
-    def add(self, value):
-        """Add the element *value* to the set."""
-        _set = self._set
-        if value not in _set:
-            _set.add(value)
-            self._list.add(value)
-
-    def clear(self):
-        """Remove all elements from the set."""
-        self._set.clear()
-        self._list.clear()
-
-    def copy(self):
-        """Create a shallow copy of the sorted set."""
-        return self._fromset(set(self._set), key=self._key)
-
-    __copy__ = copy
-
-    def count(self, value):
-        """Return the number of occurrences of *value* in the set."""
-        return 1 if value in self._set else 0
-
-    def discard(self, value):
-        """
-        Remove the first occurrence of *value*.  If *value* is not a member,
-        does nothing.
-        """
-        _set = self._set
-        if value in _set:
-            _set.remove(value)
-            self._list.discard(value)
-
-    def pop(self, index=-1):
-        """
-        Remove and return item at *index* (default last).  Raises IndexError if
-        set is empty or index is out of range.  Negative indexes are supported,
-        as for slice indices.
-        """
-        # pylint: disable=arguments-differ
-        value = self._list.pop(index)
-        self._set.remove(value)
-        return value
-
-    def remove(self, value):
-        """
-        Remove first occurrence of *value*.  Raises ValueError if
-        *value* is not present.
-        """
-        self._set.remove(value)
-        self._list.remove(value)
-
-    def difference(self, *iterables):
-        """
-        Return a new set with elements in the set that are not in the
-        *iterables*.
-        """
-        diff = self._set.difference(*iterables)
-        return self._fromset(diff, key=self._key)
-
-    __sub__ = difference
-    __rsub__ = __sub__
-
-    def difference_update(self, *iterables):
-        """
-        Update the set, removing elements found in keeping only elements
-        found in any of the *iterables*.
-        """
-        _set = self._set
-        values = set(chain(*iterables))
-        if (4 * len(values)) > len(_set):
-            _list = self._list
-            _set.difference_update(values)
-            _list.clear()
-            _list.update(_set)
-        else:
-            _discard = self.discard
-            for value in values:
-                _discard(value)
-        return self
-
-    __isub__ = difference_update
-
-    def intersection(self, *iterables):
-        """
-        Return a new set with elements common to the set and all *iterables*.
-        """
-        comb = self._set.intersection(*iterables)
-        return self._fromset(comb, key=self._key)
-
-    __and__ = intersection
-    __rand__ = __and__
-
-    def intersection_update(self, *iterables):
-        """
-        Update the set, keeping only elements found in it and all *iterables*.
-        """
-        _set = self._set
-        _list = self._list
-        _set.intersection_update(*iterables)
-        _list.clear()
-        _list.update(_set)
-        return self
-
-    __iand__ = intersection_update
-
-    def symmetric_difference(self, that):
-        """
-        Return a new set with elements in either *self* or *that* but not both.
-        """
-        diff = self._set.symmetric_difference(that)
-        return self._fromset(diff, key=self._key)
-
-    __xor__ = symmetric_difference
-    __rxor__ = __xor__
-
-    def symmetric_difference_update(self, that):
-        """
-        Update the set, keeping only elements found in either *self* or *that*,
-        but not in both.
-        """
-        _set = self._set
-        _list = self._list
-        _set.symmetric_difference_update(that)
-        _list.clear()
-        _list.update(_set)
-        return self
-
-    __ixor__ = symmetric_difference_update
-
-    def union(self, *iterables):
-        """
-        Return a new SortedSet with elements from the set and all *iterables*.
-        """
-        return self.__class__(chain(iter(self), *iterables), key=self._key)
-
-    __or__ = union
-    __ror__ = __or__
-
-    def update(self, *iterables):
-        """Update the set, adding elements from all *iterables*."""
-        _set = self._set
-        values = set(chain(*iterables))
-        if (4 * len(values)) > len(_set):
-            _list = self._list
-            _set.update(values)
-            _list.clear()
-            _list.update(_set)
-        else:
-            _add = self.add
-            for value in values:
-                _add(value)
-        return self
-
-    __ior__ = update
-    _update = update
-
-    def __reduce__(self):
-        return (type(self), (self._set, self._key))
-
-    @recursive_repr
-    def __repr__(self):
-        _key = self._key
-        key = '' if _key is None else ', key={0!r}'.format(_key)
-        name = type(self).__name__
-        return '{0}({1!r}{2})'.format(name, list(self), key)
-
-    def _check(self):
-        # pylint: disable=protected-access
-        self._list._check()
-        assert len(self._set) == len(self._list)
-        _set = self._set
-        assert all(val in _set for val in self._list)
diff --git a/python/ovs/daemon.py b/python/ovs/daemon.py
deleted file mode 100644
index 06ef92b78..000000000
--- a/python/ovs/daemon.py
+++ /dev/null
@@ -1,652 +0,0 @@ 
-# Copyright (c) 2010, 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import errno
-import os
-import signal
-import sys
-import time
-
-import ovs.dirs
-import ovs.fatal_signal
-import ovs.process
-import ovs.socket_util
-import ovs.timeval
-import ovs.util
-import ovs.vlog
-
-if sys.platform != 'win32':
-    import fcntl
-    import resource
-else:
-    import ovs.winutils as winutils
-    import ovs.fcntl_win as fcntl
-    import pywintypes
-    import subprocess
-    import win32process
-
-vlog = ovs.vlog.Vlog("daemon")
-
-# --detach: Should we run in the background?
-_detach = False
-
-# Running as the child process - Windows only.
-_detached = False
-
-# --pidfile: Name of pidfile (null if none).
-_pidfile = None
-
-# Our pidfile's inode and device, if we have created one.
-_pidfile_dev = None
-_pidfile_ino = None
-
-# --overwrite-pidfile: Create pidfile even if one already exists and is locked?
-_overwrite_pidfile = False
-
-# --no-chdir: Should we chdir to "/"?
-_chdir = True
-
-# --monitor: Should a supervisory process monitor the daemon and restart it if
-# it dies due to an error signal?
-_monitor = False
-
-# File descriptor used by daemonize_start() and daemonize_complete().
-_daemonize_fd = None
-
-RESTART_EXIT_CODE = 5
-
-
-def make_pidfile_name(name):
-    """Returns the file name that would be used for a pidfile if 'name' were
-    provided to set_pidfile()."""
-    if name is None or name == "":
-        return "%s/%s.pid" % (ovs.dirs.RUNDIR, ovs.util.PROGRAM_NAME)
-    else:
-        return ovs.util.abs_file_name(ovs.dirs.RUNDIR, name)
-
-
-def set_pidfile(name):
-    """Sets up a following call to daemonize() to create a pidfile named
-    'name'.  If 'name' begins with '/', then it is treated as an absolute path.
-    Otherwise, it is taken relative to ovs.util.RUNDIR, which is
-    $(prefix)/var/run by default.
-
-    If 'name' is null, then ovs.util.PROGRAM_NAME followed by ".pid" is
-    used."""
-    global _pidfile
-    _pidfile = make_pidfile_name(name)
-
-
-def set_no_chdir():
-    """Sets that we do not chdir to "/"."""
-    global _chdir
-    _chdir = False
-
-
-def ignore_existing_pidfile():
-    """Normally, daemonize() or daemonize_start() will terminate the program
-    with a message if a locked pidfile already exists.  If this function is
-    called, an existing pidfile will be replaced, with a warning."""
-    global _overwrite_pidfile
-    _overwrite_pidfile = True
-
-
-def set_detach():
-    """Sets up a following call to daemonize() to detach from the foreground
-    session, running this process in the background."""
-    global _detach
-    _detach = True
-
-
-def set_detached(wp):
-    """Sets up a following call to daemonize() to fork a supervisory
-    process to monitor the daemon and restart it if it dies due to
-    an error signal. Used on Windows only."""
-    global _detached
-    global _daemonize_fd
-    _detached = True
-    _daemonize_fd = int(wp)
-
-
-def get_detach():
-    """Will daemonize() really detach?"""
-    return _detach
-
-
-def set_monitor():
-    """Sets up a following call to daemonize() to fork a supervisory process to
-    monitor the daemon and restart it if it dies due to an error signal."""
-    global _monitor
-    _monitor = True
-
-
-def _fatal(msg):
-    vlog.err(msg)
-    sys.stderr.write("%s\n" % msg)
-    sys.exit(1)
-
-
-def _make_pidfile():
-    """If a pidfile has been configured, creates it and stores the running
-    process's pid in it.  Ensures that the pidfile will be deleted when the
-    process exits."""
-    pid = os.getpid()
-
-    # Create a temporary pidfile.
-    if sys.platform != 'win32':
-        tmpfile = "%s.tmp%d" % (_pidfile, pid)
-        ovs.fatal_signal.add_file_to_unlink(tmpfile)
-    else:
-        tmpfile = "%s" % _pidfile
-
-    try:
-        # This is global to keep Python from garbage-collecting and
-        # therefore closing our file after this function exits.  That would
-        # unlock the lock for us, and we don't want that.
-        global file_handle
-
-        file_handle = open(tmpfile, "w")
-    except IOError as e:
-        _fatal("%s: create failed (%s)" % (tmpfile, e.strerror))
-
-    try:
-        s = os.fstat(file_handle.fileno())
-    except IOError as e:
-        _fatal("%s: fstat failed (%s)" % (tmpfile, e.strerror))
-
-    try:
-        file_handle.write("%s\n" % pid)
-        file_handle.flush()
-    except OSError as e:
-        _fatal("%s: write failed: %s" % (tmpfile, e.strerror))
-
-    try:
-        if sys.platform != 'win32':
-            fcntl.lockf(file_handle, fcntl.LOCK_EX | fcntl.LOCK_NB)
-        else:
-            fcntl.lockf(file_handle, fcntl.LOCK_SH | fcntl.LOCK_NB)
-    except IOError as e:
-        _fatal("%s: fcntl failed: %s" % (tmpfile, e.strerror))
-
-    if sys.platform == 'win32':
-        # Ensure that the pidfile will gets closed and deleted on exit.
-        ovs.fatal_signal.add_file_to_close_and_unlink(_pidfile, file_handle)
-    else:
-        # Rename or link it to the correct name.
-        if _overwrite_pidfile:
-            try:
-                os.rename(tmpfile, _pidfile)
-            except OSError as e:
-                _fatal("failed to rename \"%s\" to \"%s\" (%s)"
-                       % (tmpfile, _pidfile, e.strerror))
-        else:
-            while True:
-                try:
-                    os.link(tmpfile, _pidfile)
-                    error = 0
-                except OSError as e:
-                    error = e.errno
-                if error == errno.EEXIST:
-                    _check_already_running()
-                elif error != errno.EINTR:
-                    break
-            if error:
-                _fatal("failed to link \"%s\" as \"%s\" (%s)"
-                       % (tmpfile, _pidfile, os.strerror(error)))
-
-        # Ensure that the pidfile will get deleted on exit.
-        ovs.fatal_signal.add_file_to_unlink(_pidfile)
-
-        # Delete the temporary pidfile if it still exists.
-        if not _overwrite_pidfile:
-            error = ovs.fatal_signal.unlink_file_now(tmpfile)
-            if error:
-                _fatal("%s: unlink failed (%s)" % (
-                    tmpfile, os.strerror(error)))
-
-    global _pidfile_dev
-    global _pidfile_ino
-    _pidfile_dev = s.st_dev
-    _pidfile_ino = s.st_ino
-
-
-def daemonize():
-    """If configured with set_pidfile() or set_detach(), creates the pid file
-    and detaches from the foreground session."""
-    daemonize_start()
-    daemonize_complete()
-
-
-def _waitpid(pid, options):
-    while True:
-        try:
-            return os.waitpid(pid, options)
-        except OSError as e:
-            if e.errno == errno.EINTR:
-                pass
-            return -e.errno, 0
-
-
-def _fork_and_wait_for_startup():
-    if sys.platform == 'win32':
-        return _fork_and_wait_for_startup_windows()
-
-    try:
-        rfd, wfd = os.pipe()
-    except OSError as e:
-        sys.stderr.write("pipe failed: %s\n" % os.strerror(e.errno))
-        sys.exit(1)
-
-    try:
-        pid = os.fork()
-    except OSError as e:
-        sys.stderr.write("could not fork: %s\n" % os.strerror(e.errno))
-        sys.exit(1)
-
-    if pid > 0:
-        # Running in parent process.
-        os.close(wfd)
-        ovs.fatal_signal.fork()
-        while True:
-            try:
-                s = os.read(rfd, 1)
-                error = 0
-            except OSError as e:
-                s = ""
-                error = e.errno
-            if error != errno.EINTR:
-                break
-        if len(s) != 1:
-            retval, status = _waitpid(pid, 0)
-            if retval == pid:
-                if os.WIFEXITED(status) and os.WEXITSTATUS(status):
-                    # Child exited with an error.  Convey the same error to
-                    # our parent process as a courtesy.
-                    sys.exit(os.WEXITSTATUS(status))
-                else:
-                    sys.stderr.write("fork child failed to signal "
-                                     "startup (%s)\n"
-                                     % ovs.process.status_msg(status))
-            else:
-                assert retval < 0
-                sys.stderr.write("waitpid failed (%s)\n"
-                                 % os.strerror(-retval))
-                sys.exit(1)
-
-        os.close(rfd)
-    else:
-        # Running in parent process.
-        os.close(rfd)
-        ovs.timeval.postfork()
-
-        global _daemonize_fd
-        _daemonize_fd = wfd
-    return pid
-
-
-def _fork_and_wait_for_startup_windows():
-    global _detached
-    if _detached:
-        # Running in child process
-        ovs.timeval.postfork()
-        return 0
-
-    """ close the log file, on Windows cannot be moved while the parent has
-    a reference on it."""
-    vlog.close_log_file()
-
-    try:
-        (rfd, wfd) = winutils.windows_create_pipe()
-    except pywintypes.error as e:
-        sys.stderr.write("pipe failed to create: %s\n" % e.strerror)
-        sys.exit(1)
-
-    try:
-        creationFlags = win32process.DETACHED_PROCESS
-        args = ("%s %s --pipe-handle=%ld" % (
-            sys.executable, " ".join(sys.argv), int(wfd)))
-        proc = subprocess.Popen(
-            args=args,
-            close_fds=False,
-            shell=False,
-            creationflags=creationFlags,
-            stdout=sys.stdout,
-            stderr=sys.stderr)
-        pid = proc.pid
-    except OSError as e:
-        sys.stderr.write("CreateProcess failed (%s)\n" % os.strerror(e.errno))
-        sys.exit(1)
-
-    # Running in parent process.
-    winutils.win32file.CloseHandle(wfd)
-    ovs.fatal_signal.fork()
-
-    error, s = winutils.windows_read_pipe(rfd, 1)
-    if error:
-        s = ""
-
-    if len(s) != 1:
-        retval = proc.wait()
-        if retval == 0:
-            sys.stderr.write("fork child failed to signal startup\n")
-        else:
-            # Child exited with an error. Convey the same error to
-            # our parent process as a courtesy.
-            sys.exit(retval)
-    winutils.win32file.CloseHandle(rfd)
-
-    return pid
-
-
-def _fork_notify_startup(fd):
-    if sys.platform == 'win32':
-        _fork_notify_startup_windows(fd)
-        return
-
-    if fd is not None:
-        error, bytes_written = ovs.socket_util.write_fully(fd, "0")
-        if error:
-            sys.stderr.write("could not write to pipe\n")
-            sys.exit(1)
-        os.close(fd)
-
-
-def _fork_notify_startup_windows(fd):
-    if fd is not None:
-        try:
-            # Python 2 requires a string as second parameter, while
-            # Python 3 requires a bytes-like object. b"0" fits for both
-            # python versions.
-            winutils.win32file.WriteFile(fd, b"0", None)
-        except winutils.pywintypes.error as e:
-            sys.stderr.write("could not write to pipe: %s\n" %
-                             os.strerror(e.winerror))
-            sys.exit(1)
-
-
-def _should_restart(status):
-    global RESTART_EXIT_CODE
-
-    if sys.platform == 'win32':
-        # The exit status is encoded in the high byte of the
-        # 16-bit number 'status'.
-        exit_status = status >> 8
-
-        if exit_status == RESTART_EXIT_CODE:
-            return True
-        return False
-
-    if os.WIFEXITED(status) and os.WEXITSTATUS(status) == RESTART_EXIT_CODE:
-        return True
-
-    if os.WIFSIGNALED(status):
-        for signame in ("SIGABRT", "SIGALRM", "SIGBUS", "SIGFPE", "SIGILL",
-                        "SIGPIPE", "SIGSEGV", "SIGXCPU", "SIGXFSZ"):
-            if os.WTERMSIG(status) == getattr(signal, signame, None):
-                return True
-    return False
-
-
-def _monitor_daemon(daemon_pid):
-    # XXX should log daemon's stderr output at startup time
-    # XXX should use setproctitle module if available
-    last_restart = None
-    while True:
-        retval, status = _waitpid(daemon_pid, 0)
-        if retval < 0:
-            sys.stderr.write("waitpid failed\n")
-            sys.exit(1)
-        elif retval == daemon_pid:
-            status_msg = ("pid %d died, %s"
-                          % (daemon_pid, ovs.process.status_msg(status)))
-
-            if _should_restart(status):
-                if sys.platform != 'win32' and os.WCOREDUMP(status):
-                    # Disable further core dumps to save disk space.
-                    try:
-                        resource.setrlimit(resource.RLIMIT_CORE, (0, 0))
-                    except resource.error:
-                        vlog.warn("failed to disable core dumps")
-
-                # Throttle restarts to no more than once every 10 seconds.
-                if (last_restart is not None and
-                    ovs.timeval.msec() < last_restart + 10000):
-                    vlog.warn("%s, waiting until 10 seconds since last "
-                              "restart" % status_msg)
-                    while True:
-                        now = ovs.timeval.msec()
-                        wakeup = last_restart + 10000
-                        if now > wakeup:
-                            break
-                        sys.stdout.write("sleep %f\n" % (
-                            (wakeup - now) / 1000.0))
-                        time.sleep((wakeup - now) / 1000.0)
-                last_restart = ovs.timeval.msec()
-
-                vlog.err("%s, restarting" % status_msg)
-                daemon_pid = _fork_and_wait_for_startup()
-                if not daemon_pid:
-                    break
-            else:
-                vlog.info("%s, exiting" % status_msg)
-                sys.exit(0)
-
-    # Running in new daemon process.
-
-
-def _close_standard_fds():
-    """Close stdin, stdout, stderr.  If we're started from e.g. an SSH session,
-    then this keeps us from holding that session open artificially."""
-    null_fd = ovs.socket_util.get_null_fd()
-    if null_fd >= 0:
-        os.dup2(null_fd, 0)
-        os.dup2(null_fd, 1)
-        os.dup2(null_fd, 2)
-
-
-def daemonize_start():
-    """If daemonization is configured, then starts daemonization, by forking
-    and returning in the child process.  The parent process hangs around until
-    the child lets it know either that it completed startup successfully (by
-    calling daemon_complete()) or that it failed to start up (by exiting with a
-    nonzero exit code)."""
-
-    if _detach:
-        if _fork_and_wait_for_startup() > 0:
-            # Running in parent process.
-            sys.exit(0)
-
-        if sys.platform != 'win32':
-            # Running in daemon or monitor process.
-            os.setsid()
-
-    if _monitor:
-        saved_daemonize_fd = _daemonize_fd
-        daemon_pid = _fork_and_wait_for_startup()
-        if daemon_pid > 0:
-            # Running in monitor process.
-            _fork_notify_startup(saved_daemonize_fd)
-            if sys.platform != 'win32':
-                _close_standard_fds()
-            _monitor_daemon(daemon_pid)
-        # Running in daemon process
-
-    if _pidfile:
-        _make_pidfile()
-
-
-def daemonize_complete():
-    """If daemonization is configured, then this function notifies the parent
-    process that the child process has completed startup successfully."""
-    _fork_notify_startup(_daemonize_fd)
-
-    if _detach:
-        if _chdir:
-            os.chdir("/")
-        _close_standard_fds()
-
-
-def usage():
-    sys.stdout.write("""
-Daemon options:
-   --detach                run in background as daemon
-   --no-chdir              do not chdir to '/'
-   --pidfile[=FILE]        create pidfile (default: %s/%s.pid)
-   --overwrite-pidfile     with --pidfile, start even if already running
-""" % (ovs.dirs.RUNDIR, ovs.util.PROGRAM_NAME))
-
-
-def __read_pidfile(pidfile, delete_if_stale):
-    if _pidfile_dev is not None:
-        try:
-            s = os.stat(pidfile)
-            if s.st_ino == _pidfile_ino and s.st_dev == _pidfile_dev:
-                # It's our own pidfile.  We can't afford to open it,
-                # because closing *any* fd for a file that a process
-                # has locked also releases all the locks on that file.
-                #
-                # Fortunately, we know the associated pid anyhow.
-                return os.getpid()
-        except OSError:
-            pass
-
-    try:
-        file_handle = open(pidfile, "r+")
-    except IOError as e:
-        if e.errno == errno.ENOENT and delete_if_stale:
-            return 0
-        vlog.warn("%s: open: %s" % (pidfile, e.strerror))
-        return -e.errno
-
-    # Python fcntl doesn't directly support F_GETLK so we have to just try
-    # to lock it.
-    try:
-        fcntl.lockf(file_handle, fcntl.LOCK_EX | fcntl.LOCK_NB)
-
-        # pidfile exists but wasn't locked by anyone.  Now we have the lock.
-        if not delete_if_stale:
-            file_handle.close()
-            vlog.warn("%s: pid file is stale" % pidfile)
-            return -errno.ESRCH
-
-        # Is the file we have locked still named 'pidfile'?
-        try:
-            raced = False
-            s = os.stat(pidfile)
-            s2 = os.fstat(file_handle.fileno())
-            if s.st_ino != s2.st_ino or s.st_dev != s2.st_dev:
-                raced = True
-        except IOError:
-            raced = True
-        if raced:
-            vlog.warn("%s: lost race to delete pidfile" % pidfile)
-            return -errno.EALREADY
-
-        # We won the right to delete the stale pidfile.
-        try:
-            os.unlink(pidfile)
-        except IOError as e:
-            vlog.warn("%s: failed to delete stale pidfile (%s)"
-                            % (pidfile, e.strerror))
-            return -e.errno
-        else:
-            vlog.dbg("%s: deleted stale pidfile" % pidfile)
-            file_handle.close()
-            return 0
-    except IOError as e:
-        if e.errno not in [errno.EACCES, errno.EAGAIN]:
-            vlog.warn("%s: fcntl: %s" % (pidfile, e.strerror))
-            return -e.errno
-
-    # Someone else has the pidfile locked.
-    try:
-        try:
-            error = int(file_handle.readline())
-        except IOError as e:
-            vlog.warn("%s: read: %s" % (pidfile, e.strerror))
-            error = -e.errno
-        except ValueError:
-            vlog.warn("%s does not contain a pid" % pidfile)
-            error = -errno.EINVAL
-
-        return error
-    finally:
-        try:
-            file_handle.close()
-        except IOError:
-            pass
-
-
-def read_pidfile(pidfile):
-    """Opens and reads a PID from 'pidfile'.  Returns the positive PID if
-    successful, otherwise a negative errno value."""
-    return __read_pidfile(pidfile, False)
-
-
-def _check_already_running():
-    pid = __read_pidfile(_pidfile, True)
-    if pid > 0:
-        _fatal("%s: already running as pid %d, aborting" % (_pidfile, pid))
-    elif pid < 0:
-        _fatal("%s: pidfile check failed (%s), aborting"
-               % (_pidfile, os.strerror(pid)))
-
-
-def add_args(parser):
-    """Populates 'parser', an ArgumentParser allocated using the argparse
-    module, with the command line arguments required by the daemon module."""
-
-    pidfile = make_pidfile_name(None)
-
-    group = parser.add_argument_group(title="Daemon Options")
-    group.add_argument("--detach", action="store_true",
-            help="Run in background as a daemon.")
-    group.add_argument("--no-chdir", action="store_true",
-            help="Do not chdir to '/'.")
-    group.add_argument("--monitor", action="store_true",
-            help="Monitor %s process." % ovs.util.PROGRAM_NAME)
-    group.add_argument("--pidfile", nargs="?", const=pidfile,
-            help="Create pidfile (default %s)." % pidfile)
-    group.add_argument("--overwrite-pidfile", action="store_true",
-            help="With --pidfile, start even if already running.")
-    if sys.platform == 'win32':
-        group.add_argument("--pipe-handle",
-                           help=("With --pidfile, start even if "
-                                 "already running."))
-
-
-def handle_args(args):
-    """Handles daemon module settings in 'args'.  'args' is an object
-    containing values parsed by the parse_args() method of ArgumentParser.  The
-    parent ArgumentParser should have been prepared by add_args() before
-    calling parse_args()."""
-
-    if sys.platform == 'win32':
-        if args.pipe_handle:
-            set_detached(args.pipe_handle)
-
-    if args.detach:
-        set_detach()
-
-    if args.no_chdir:
-        set_no_chdir()
-
-    if args.pidfile:
-        set_pidfile(args.pidfile)
-
-    if args.overwrite_pidfile:
-        ignore_existing_pidfile()
-
-    if args.monitor:
-        set_monitor()
diff --git a/python/ovs/db/__init__.py b/python/ovs/db/__init__.py
deleted file mode 100644
index 218d8921e..000000000
--- a/python/ovs/db/__init__.py
+++ /dev/null
@@ -1 +0,0 @@ 
-# This file intentionally left blank.
diff --git a/python/ovs/db/custom_index.py b/python/ovs/db/custom_index.py
deleted file mode 100644
index 587caf5e3..000000000
--- a/python/ovs/db/custom_index.py
+++ /dev/null
@@ -1,154 +0,0 @@ 
-import collections
-import functools
-import operator
-try:
-    from UserDict import IterableUserDict as DictBase
-except ImportError:
-    from collections import UserDict as DictBase
-
-try:
-    import sortedcontainers
-except ImportError:
-    from ovs.compat import sortedcontainers
-
-from ovs.db import data
-
-OVSDB_INDEX_ASC = "ASC"
-OVSDB_INDEX_DESC = "DESC"
-ColumnIndex = collections.namedtuple('ColumnIndex',
-                                     ['column', 'direction', 'key'])
-
-
-class MultiColumnIndex(object):
-    def __init__(self, name):
-        self.name = name
-        self.columns = []
-        self.clear()
-
-    def __repr__(self):
-        return "{}(name={})".format(self.__class__.__name__, self.name)
-
-    def __str__(self):
-        return repr(self) + " columns={} values={}".format(
-            self.columns, [str(v) for v in self.values])
-
-    def add_column(self, column, direction=OVSDB_INDEX_ASC, key=None):
-        self.columns.append(ColumnIndex(column, direction,
-                             key or operator.attrgetter(column)))
-
-    def add_columns(self, *columns):
-        self.columns.extend(ColumnIndex(col, OVSDB_INDEX_ASC,
-                                        operator.attrgetter(col))
-                            for col in columns)
-
-    def _cmp(self, a, b):
-        for col, direction, key in self.columns:
-            aval, bval = key(a), key(b)
-            if aval == bval:
-                continue
-            result = (aval > bval) - (aval < bval)
-            return result if direction == OVSDB_INDEX_ASC else -result
-        return 0
-
-    def index_entry_from_row(self, row):
-        return row._table.rows.IndexEntry(
-            uuid=row.uuid,
-            **{c.column: getattr(row, c.column) for c in self.columns})
-
-    def add(self, row):
-        if not all(hasattr(row, col.column) for col in self.columns):
-            # This is a new row, but it hasn't had the necessary columns set
-            # We'll add it later
-            return
-        self.values.add(self.index_entry_from_row(row))
-
-    def remove(self, row):
-        self.values.remove(self.index_entry_from_row(row))
-
-    def clear(self):
-        self.values = sortedcontainers.SortedListWithKey(
-            key=functools.cmp_to_key(self._cmp))
-
-    def irange(self, start, end):
-        return iter(r._table.rows[r.uuid]
-                    for r in self.values.irange(start, end))
-
-    def __iter__(self):
-        return iter(r._table.rows[r.uuid] for r in self.values)
-
-
-class IndexedRows(DictBase, object):
-    def __init__(self, table, *args, **kwargs):
-        super(IndexedRows, self).__init__(*args, **kwargs)
-        self.table = table
-        self.indexes = {}
-        self.IndexEntry = IndexEntryClass(table)
-
-    def index_create(self, name):
-        if name in self.indexes:
-            raise ValueError("An index named {} already exists".format(name))
-        index = self.indexes[name] = MultiColumnIndex(name)
-        return index
-
-    def __setitem__(self, key, item):
-        self.data[key] = item
-        for index in self.indexes.values():
-            index.add(item)
-
-    def __delitem__(self, key):
-        val = self.data[key]
-        del self.data[key]
-        for index in self.indexes.values():
-            index.remove(val)
-
-    def clear(self):
-        self.data.clear()
-        for index in self.indexes.values():
-            index.clear()
-
-    # Nothing uses the methods below, though they'd be easy to implement
-    def update(self, dict=None, **kwargs):
-        raise NotImplementedError()
-
-    def setdefault(self, key, failobj=None):
-        raise NotImplementedError()
-
-    def pop(self, key, *args):
-        raise NotImplementedError()
-
-    def popitem(self):
-        raise NotImplementedError()
-
-    @classmethod
-    def fromkeys(cls, iterable, value=None):
-        raise NotImplementedError()
-
-
-def IndexEntryClass(table):
-    """Create a class used represent Rows in indexes
-
-    ovs.db.idl.Row, being inherently tied to transaction processing and being
-    initialized with dicts of Datums, is not really useable as an object to
-    pass to and store in indexes. This method will create a class named after
-    the table's name that is initialized with that Table Row's default values.
-    For example:
-
-    Port = IndexEntryClass(idl.tables['Port'])
-
-    will create a Port class. This class can then be used to search custom
-    indexes. For example:
-
-    for port in idx.iranage(Port(name="test1"), Port(name="test9")):
-       ...
-    """
-
-    def defaults_uuid_to_row(atom, base):
-        return atom.value
-
-    columns = ['uuid'] + list(table.columns.keys())
-    cls = collections.namedtuple(table.name, columns)
-    cls._table = table
-    cls.__new__.__defaults__ = (None,) + tuple(
-        data.Datum.default(c.type).to_python(defaults_uuid_to_row)
-        for c in table.columns.values())
-    return cls
diff --git a/python/ovs/db/data.py b/python/ovs/db/data.py
deleted file mode 100644
index 9e57595f7..000000000
--- a/python/ovs/db/data.py
+++ /dev/null
@@ -1,585 +0,0 @@ 
-# Copyright (c) 2009, 2010, 2011, 2014, 2016 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import functools
-import re
-import uuid
-
-import ovs.db.parser
-import ovs.db.types
-import ovs.json
-import ovs.jsonrpc
-import ovs.ovsuuid
-import ovs.poller
-import ovs.socket_util
-from ovs.db import error
-
-import six
-
-
-class ConstraintViolation(error.Error):
-    def __init__(self, msg, json=None):
-        error.Error.__init__(self, msg, json, tag="constraint violation")
-
-
-def escapeCString(src):
-    dst = []
-    for c in src:
-        if c in "\\\"":
-            dst.append("\\" + c)
-        elif ord(c) < 32:
-            if c == '\n':
-                dst.append('\\n')
-            elif c == '\r':
-                dst.append('\\r')
-            elif c == '\a':
-                dst.append('\\a')
-            elif c == '\b':
-                dst.append('\\b')
-            elif c == '\f':
-                dst.append('\\f')
-            elif c == '\t':
-                dst.append('\\t')
-            elif c == '\v':
-                dst.append('\\v')
-            else:
-                dst.append('\\%03o' % ord(c))
-        else:
-            dst.append(c)
-    return ''.join(dst)
-
-
-def returnUnchanged(x):
-    return x
-
-
-@functools.total_ordering
-class Atom(object):
-    def __init__(self, type_, value=None):
-        self.type = type_
-        if value is not None:
-            self.value = value
-        else:
-            self.value = type_.default_atom()
-
-    def __eq__(self, other):
-        if not isinstance(other, Atom) or self.type != other.type:
-            return NotImplemented
-        return True if self.value == other.value else False
-
-    def __lt__(self, other):
-        if not isinstance(other, Atom) or self.type != other.type:
-            return NotImplemented
-        return True if self.value < other.value else False
-
-    def __cmp__(self, other):
-        if not isinstance(other, Atom) or self.type != other.type:
-            return NotImplemented
-        elif self.value < other.value:
-            return -1
-        elif self.value > other.value:
-            return 1
-        else:
-            return 0
-
-    def __hash__(self):
-        return hash(self.value)
-
-    @staticmethod
-    def default(type_):
-        """Returns the default value for the given type_, which must be an
-        instance of ovs.db.types.AtomicType.
-
-        The default value for each atomic type is;
-
-          - 0, for integer or real atoms.
-
-          - False, for a boolean atom.
-
-          - "", for a string atom.
-
-          - The all-zeros UUID, for a UUID atom."""
-        return Atom(type_)
-
-    def is_default(self):
-        return self == self.default(self.type)
-
-    @staticmethod
-    def from_json(base, json, symtab=None):
-        type_ = base.type
-        json = ovs.db.parser.float_to_int(json)
-        real_types = list(six.integer_types)
-        real_types.extend([float])
-        real_types = tuple(real_types)
-        if ((type_ == ovs.db.types.IntegerType
-                and isinstance(json, six.integer_types))
-            or (type_ == ovs.db.types.RealType
-                and isinstance(json, real_types))
-            or (type_ == ovs.db.types.BooleanType and isinstance(json, bool))
-            or (type_ == ovs.db.types.StringType
-                and isinstance(json, six.string_types))):
-            atom = Atom(type_, json)
-        elif type_ == ovs.db.types.UuidType:
-            atom = Atom(type_, ovs.ovsuuid.from_json(json, symtab))
-        else:
-            raise error.Error("expected %s" % type_.to_string(), json)
-        atom.check_constraints(base)
-        return atom
-
-    @staticmethod
-    def from_python(base, value):
-        value = ovs.db.parser.float_to_int(value)
-        if isinstance(value, base.type.python_types):
-            atom = Atom(base.type, value)
-        else:
-            raise error.Error("expected %s, got %s" % (base.type, type(value)))
-        atom.check_constraints(base)
-        return atom
-
-    def check_constraints(self, base):
-        """Checks whether 'atom' meets the constraints (if any) defined in
-        'base' and raises an ovs.db.error.Error if any constraint is violated.
-
-        'base' and 'atom' must have the same type.
-        Checking UUID constraints is deferred to transaction commit time, so
-        this function does nothing for UUID constraints."""
-        assert base.type == self.type
-        if base.enum is not None and self not in base.enum:
-            raise ConstraintViolation(
-                "%s is not one of the allowed values (%s)"
-                % (self.to_string(), base.enum.to_string()))
-        elif base.type in [ovs.db.types.IntegerType, ovs.db.types.RealType]:
-            if ((base.min is None or self.value >= base.min) and
-                    (base.max is None or self.value <= base.max)):
-                pass
-            elif base.min is not None and base.max is not None:
-                raise ConstraintViolation(
-                    "%s is not in the valid range %.15g to %.15g (inclusive)"
-                    % (self.to_string(), base.min, base.max))
-            elif base.min is not None:
-                raise ConstraintViolation(
-                    "%s is less than minimum allowed value %.15g"
-                    % (self.to_string(), base.min))
-            else:
-                raise ConstraintViolation(
-                    "%s is greater than maximum allowed value %.15g"
-                    % (self.to_string(), base.max))
-        elif base.type == ovs.db.types.StringType:
-            # XXX The C version validates that the string is valid UTF-8 here.
-            # Do we need to do that in Python too?
-            s = self.value
-            length = len(s)
-            if length < base.min_length:
-                raise ConstraintViolation(
-                    '"%s" length %d is less than minimum allowed length %d'
-                    % (s, length, base.min_length))
-            elif length > base.max_length:
-                raise ConstraintViolation(
-                    '"%s" length %d is greater than maximum allowed '
-                    'length %d' % (s, length, base.max_length))
-
-    def to_json(self):
-        if self.type == ovs.db.types.UuidType:
-            return ovs.ovsuuid.to_json(self.value)
-        else:
-            return self.value
-
-    def cInitAtom(self, var):
-        if self.type == ovs.db.types.IntegerType:
-            return '.integer = %d' % self.value
-        elif self.type == ovs.db.types.RealType:
-            return '.real = %.15g' % self.value
-        elif self.type == ovs.db.types.BooleanType:
-            if self.value:
-                return '.boolean = true'
-            else:
-                return '.boolean = false'
-        elif self.type == ovs.db.types.StringType:
-            return '.string = "%s"' % escapeCString(self.value)
-        elif self.type == ovs.db.types.UuidType:
-            return '.uuid = %s' % ovs.ovsuuid.to_c_assignment(self.value)
-
-    def toEnglish(self, escapeLiteral=returnUnchanged):
-        if self.type == ovs.db.types.IntegerType:
-            return '%d' % self.value
-        elif self.type == ovs.db.types.RealType:
-            return '%.15g' % self.value
-        elif self.type == ovs.db.types.BooleanType:
-            if self.value:
-                return 'true'
-            else:
-                return 'false'
-        elif self.type == ovs.db.types.StringType:
-            return escapeLiteral(self.value)
-        elif self.type == ovs.db.types.UuidType:
-            return self.value.value
-
-    __need_quotes_re = re.compile("$|true|false|[^_a-zA-Z]|.*[^-._a-zA-Z]")
-
-    @staticmethod
-    def __string_needs_quotes(s):
-        return Atom.__need_quotes_re.match(s)
-
-    def to_string(self):
-        if self.type == ovs.db.types.IntegerType:
-            return '%d' % self.value
-        elif self.type == ovs.db.types.RealType:
-            return '%.15g' % self.value
-        elif self.type == ovs.db.types.BooleanType:
-            if self.value:
-                return 'true'
-            else:
-                return 'false'
-        elif self.type == ovs.db.types.StringType:
-            if Atom.__string_needs_quotes(self.value):
-                return ovs.json.to_string(self.value)
-            else:
-                return self.value
-        elif self.type == ovs.db.types.UuidType:
-            return str(self.value)
-
-    @staticmethod
-    def new(x):
-        if isinstance(x, six.integer_types):
-            t = ovs.db.types.IntegerType
-        elif isinstance(x, float):
-            t = ovs.db.types.RealType
-        elif isinstance(x, bool):
-            t = ovs.db.types.BooleanType
-        elif isinstance(x, six.string_types):
-            t = ovs.db.types.StringType
-        elif isinstance(x, uuid):
-            t = ovs.db.types.UuidType
-        else:
-            raise TypeError
-        return Atom(t, x)
-
-
-@functools.total_ordering
-class Datum(object):
-    def __init__(self, type_, values={}):
-        self.type = type_
-        self.values = values
-
-    def __eq__(self, other):
-        if not isinstance(other, Datum):
-            return NotImplemented
-        return True if self.values == other.values else False
-
-    def __lt__(self, other):
-        if not isinstance(other, Datum):
-            return NotImplemented
-        return True if self.values < other.values else False
-
-    def __cmp__(self, other):
-        if not isinstance(other, Datum):
-            return NotImplemented
-        elif self.values < other.values:
-            return -1
-        elif self.values > other.values:
-            return 1
-        else:
-            return 0
-
-    __hash__ = None
-
-    def __contains__(self, item):
-        return item in self.values
-
-    def copy(self):
-        return Datum(self.type, dict(self.values))
-
-    @staticmethod
-    def default(type_):
-        if type_.n_min == 0:
-            values = {}
-        elif type_.is_map():
-            values = {type_.key.default(): type_.value.default()}
-        else:
-            values = {type_.key.default(): None}
-        return Datum(type_, values)
-
-    def is_default(self):
-        return self == Datum.default(self.type)
-
-    def check_constraints(self):
-        """Checks that each of the atoms in 'datum' conforms to the constraints
-        specified by its 'type' and raises an ovs.db.error.Error.
-
-        This function is not commonly useful because the most ordinary way to
-        obtain a datum is ultimately via Datum.from_json() or Atom.from_json(),
-        which check constraints themselves."""
-        for keyAtom, valueAtom in six.iteritems(self.values):
-            keyAtom.check_constraints(self.type.key)
-            if valueAtom is not None:
-                valueAtom.check_constraints(self.type.value)
-
-    @staticmethod
-    def from_json(type_, json, symtab=None):
-        """Parses 'json' as a datum of the type described by 'type'.  If
-        successful, returns a new datum.  On failure, raises an
-        ovs.db.error.Error.
-
-        Violations of constraints expressed by 'type' are treated as errors.
-
-        If 'symtab' is nonnull, then named UUIDs in 'symtab' are accepted.
-        Refer to RFC 7047 for information about this, and for the syntax
-        that this function accepts."""
-        is_map = type_.is_map()
-        if (is_map or
-            (isinstance(json, list) and len(json) > 0 and json[0] == "set")):
-            if is_map:
-                class_ = "map"
-            else:
-                class_ = "set"
-
-            inner = ovs.db.parser.unwrap_json(json, class_, [list, tuple],
-                                              "array")
-            n = len(inner)
-            if n < type_.n_min or n > type_.n_max:
-                raise error.Error("%s must have %d to %d members but %d are "
-                                  "present" % (class_, type_.n_min,
-                                               type_.n_max, n),
-                                  json)
-
-            values = {}
-            for element in inner:
-                if is_map:
-                    key, value = ovs.db.parser.parse_json_pair(element)
-                    keyAtom = Atom.from_json(type_.key, key, symtab)
-                    valueAtom = Atom.from_json(type_.value, value, symtab)
-                else:
-                    keyAtom = Atom.from_json(type_.key, element, symtab)
-                    valueAtom = None
-
-                if keyAtom in values:
-                    if is_map:
-                        raise error.Error("map contains duplicate key")
-                    else:
-                        raise error.Error("set contains duplicate")
-
-                values[keyAtom] = valueAtom
-
-            return Datum(type_, values)
-        else:
-            keyAtom = Atom.from_json(type_.key, json, symtab)
-            return Datum(type_, {keyAtom: None})
-
-    def to_json(self):
-        if self.type.is_map():
-            return ["map", [[k.to_json(), v.to_json()]
-                            for k, v in sorted(self.values.items())]]
-        elif len(self.values) == 1:
-            key = next(six.iterkeys(self.values))
-            return key.to_json()
-        else:
-            return ["set", [k.to_json() for k in sorted(self.values.keys())]]
-
-    def to_string(self):
-        head = tail = None
-        if self.type.n_max > 1 or len(self.values) == 0:
-            if self.type.is_map():
-                head = "{"
-                tail = "}"
-            else:
-                head = "["
-                tail = "]"
-
-        s = []
-        if head:
-            s.append(head)
-
-        for i, key in enumerate(sorted(self.values)):
-            if i:
-                s.append(", ")
-
-            s.append(key.to_string())
-            if self.type.is_map():
-                s.append("=")
-                s.append(self.values[key].to_string())
-
-        if tail:
-            s.append(tail)
-        return ''.join(s)
-
-    def diff(self, datum):
-        if self.type.n_max > 1 or len(self.values) == 0:
-            for k, v in six.iteritems(datum.values):
-                if k in self.values and v == self.values[k]:
-                    del self.values[k]
-                else:
-                    self.values[k] = v
-        else:
-            return datum
-
-        return self
-
-    def as_list(self):
-        if self.type.is_map():
-            return [[k.value, v.value] for k, v in six.iteritems(self.values)]
-        else:
-            return [k.value for k in six.iterkeys(self.values)]
-
-    def as_dict(self):
-        return dict(self.values)
-
-    def as_scalar(self):
-        if len(self.values) == 1:
-            if self.type.is_map():
-                k, v = next(six.iteritems(self.values))
-                return [k.value, v.value]
-            else:
-                return next(six.iterkeys(self.values)).value
-        else:
-            return None
-
-    def to_python(self, uuid_to_row):
-        """Returns this datum's value converted into a natural Python
-        representation of this datum's type, according to the following
-        rules:
-
-        - If the type has exactly one value and it is not a map (that is,
-          self.type.is_scalar() returns True), then the value is:
-
-            * An int or long, for an integer column.
-
-            * An int or long or float, for a real column.
-
-            * A bool, for a boolean column.
-
-            * A str or unicode object, for a string column.
-
-            * A uuid.UUID object, for a UUID column without a ref_table.
-
-            * An object represented the referenced row, for a UUID column with
-              a ref_table.  (For the Idl, this object will be an ovs.db.idl.Row
-              object.)
-
-          If some error occurs (e.g. the database server's idea of the column
-          is different from the IDL's idea), then the default value for the
-          scalar type is used (see Atom.default()).
-
-        - Otherwise, if the type is not a map, then the value is a Python list
-          whose elements have the types described above.
-
-        - Otherwise, the type is a map, and the value is a Python dict that
-          maps from key to value, with key and value types determined as
-          described above.
-
-        'uuid_to_row' must be a function that takes a value and an
-        ovs.db.types.BaseType and translates UUIDs into row objects."""
-        if self.type.is_scalar():
-            value = uuid_to_row(self.as_scalar(), self.type.key)
-            if value is None:
-                return self.type.key.default()
-            else:
-                return value
-        elif self.type.is_map():
-            value = {}
-            for k, v in six.iteritems(self.values):
-                dk = uuid_to_row(k.value, self.type.key)
-                dv = uuid_to_row(v.value, self.type.value)
-                if dk is not None and dv is not None:
-                    value[dk] = dv
-            return value
-        else:
-            s = set()
-            for k in self.values:
-                dk = uuid_to_row(k.value, self.type.key)
-                if dk is not None:
-                    s.add(dk)
-            return sorted(s)
-
-    @staticmethod
-    def from_python(type_, value, row_to_uuid):
-        """Returns a new Datum with the given ovs.db.types.Type 'type_'.  The
-        new datum's value is taken from 'value', which must take the form
-        described as a valid return value from Datum.to_python() for 'type'.
-
-        Each scalar value within 'value' is initially passed through
-        'row_to_uuid', which should convert objects that represent rows (if
-        any) into uuid.UUID objects and return other data unchanged.
-
-        Raises ovs.db.error.Error if 'value' is not in an appropriate form for
-        'type_'."""
-        d = {}
-        if isinstance(value, dict):
-            for k, v in six.iteritems(value):
-                ka = Atom.from_python(type_.key, row_to_uuid(k))
-                va = Atom.from_python(type_.value, row_to_uuid(v))
-                d[ka] = va
-        elif isinstance(value, (list, set, tuple)):
-            for k in value:
-                ka = Atom.from_python(type_.key, row_to_uuid(k))
-                d[ka] = None
-        else:
-            ka = Atom.from_python(type_.key, row_to_uuid(value))
-            d[ka] = None
-
-        datum = Datum(type_, d)
-        datum.check_constraints()
-        if not datum.conforms_to_type():
-            raise error.Error("%d values when type requires between %d and %d"
-                              % (len(d), type_.n_min, type_.n_max))
-
-        return datum
-
-    def __getitem__(self, key):
-        if not isinstance(key, Atom):
-            key = Atom.new(key)
-        if not self.type.is_map():
-            raise IndexError
-        elif key not in self.values:
-            raise KeyError
-        else:
-            return self.values[key].value
-
-    def get(self, key, default=None):
-        if not isinstance(key, Atom):
-            key = Atom.new(key)
-        if key in self.values:
-            return self.values[key].value
-        else:
-            return default
-
-    def __str__(self):
-        return self.to_string()
-
-    def conforms_to_type(self):
-        n = len(self.values)
-        return self.type.n_min <= n <= self.type.n_max
-
-    def cDeclareDatum(self, name):
-        n = len(self.values)
-        if n == 0:
-            return ["static struct ovsdb_datum %s = { .n = 0 };"]
-
-        s = ["static union ovsdb_atom %s_keys[%d] = {" % (name, n)]
-        for key in sorted(self.values):
-            s += ["    { %s }," % key.cInitAtom(key)]
-        s += ["};"]
-
-        if self.type.value:
-            s = ["static union ovsdb_atom %s_values[%d] = {" % (name, n)]
-            for k, v in sorted(self.values.items()):
-                s += ["    { %s }," % v.cInitAtom(v)]
-            s += ["};"]
-
-        s += ["static struct ovsdb_datum %s = {" % name]
-        s += ["    .n = %d," % n]
-        s += ["    .keys = %s_keys," % name]
-        if self.type.value:
-            s += ["    .values = %s_values," % name]
-        s += ["};"]
-        return s
diff --git a/python/ovs/db/error.py b/python/ovs/db/error.py
deleted file mode 100644
index 4d192839b..000000000
--- a/python/ovs/db/error.py
+++ /dev/null
@@ -1,34 +0,0 @@ 
-# Copyright (c) 2009, 2010, 2011 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import ovs.json
-
-
-class Error(Exception):
-    def __init__(self, msg, json=None, tag=None):
-        self.msg = msg
-        self.json = json
-        if tag is None:
-            if json is None:
-                self.tag = "ovsdb error"
-            else:
-                self.tag = "syntax error"
-        else:
-            self.tag = tag
-
-        # Compose message.
-        syntax = ""
-        if self.json is not None:
-            syntax = 'syntax "%s": ' % ovs.json.to_string(self.json)
-        Exception.__init__(self, "%s%s: %s" % (syntax, self.tag, self.msg))
diff --git a/python/ovs/db/idl.py b/python/ovs/db/idl.py
deleted file mode 100644
index 84af978a4..000000000
--- a/python/ovs/db/idl.py
+++ /dev/null
@@ -1,2030 +0,0 @@ 
-# Copyright (c) 2009, 2010, 2011, 2012, 2013, 2016 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import functools
-import uuid
-
-import ovs.db.data as data
-import ovs.db.parser
-import ovs.db.schema
-import ovs.jsonrpc
-import ovs.ovsuuid
-import ovs.poller
-import ovs.vlog
-from ovs.db import custom_index
-from ovs.db import error
-
-import six
-
-vlog = ovs.vlog.Vlog("idl")
-
-__pychecker__ = 'no-classattr no-objattrs'
-
-ROW_CREATE = "create"
-ROW_UPDATE = "update"
-ROW_DELETE = "delete"
-
-OVSDB_UPDATE = 0
-OVSDB_UPDATE2 = 1
-
-CLUSTERED = "clustered"
-
-
-class Idl(object):
-    """Open vSwitch Database Interface Definition Language (OVSDB IDL).
-
-    The OVSDB IDL maintains an in-memory replica of a database.  It issues RPC
-    requests to an OVSDB database server and parses the responses, converting
-    raw JSON into data structures that are easier for clients to digest.
-
-    The IDL also assists with issuing database transactions.  The client
-    creates a transaction, manipulates the IDL data structures, and commits or
-    aborts the transaction.  The IDL then composes and issues the necessary
-    JSON-RPC requests and reports to the client whether the transaction
-    completed successfully.
-
-    The client is allowed to access the following attributes directly, in a
-    read-only fashion:
-
-    - 'tables': This is the 'tables' map in the ovs.db.schema.DbSchema provided
-      to the Idl constructor.  Each ovs.db.schema.TableSchema in the map is
-      annotated with a new attribute 'rows', which is a dict from a uuid.UUID
-      to a Row object.
-
-      The client may directly read and write the Row objects referenced by the
-      'rows' map values.  Refer to Row for more details.
-
-    - 'change_seqno': A number that represents the IDL's state.  When the IDL
-      is updated (by Idl.run()), its value changes.  The sequence number can
-      occasionally change even if the database does not.  This happens if the
-      connection to the database drops and reconnects, which causes the
-      database contents to be reloaded even if they didn't change.  (It could
-      also happen if the database server sends out a "change" that reflects
-      what the IDL already thought was in the database.  The database server is
-      not supposed to do that, but bugs could in theory cause it to do so.)
-
-    - 'lock_name': The name of the lock configured with Idl.set_lock(), or None
-      if no lock is configured.
-
-    - 'has_lock': True, if the IDL is configured to obtain a lock and owns that
-      lock, and False otherwise.
-
-      Locking and unlocking happens asynchronously from the database client's
-      point of view, so the information is only useful for optimization
-      (e.g. if the client doesn't have the lock then there's no point in trying
-      to write to the database).
-
-    - 'is_lock_contended': True, if the IDL is configured to obtain a lock but
-      the database server has indicated that some other client already owns the
-      requested lock, and False otherwise.
-
-    - 'txn': The ovs.db.idl.Transaction object for the database transaction
-      currently being constructed, if there is one, or None otherwise.
-"""
-
-    IDL_S_INITIAL = 0
-    IDL_S_SERVER_SCHEMA_REQUESTED = 1
-    IDL_S_SERVER_MONITOR_REQUESTED = 2
-    IDL_S_DATA_MONITOR_REQUESTED = 3
-    IDL_S_DATA_MONITOR_COND_REQUESTED = 4
-
-    def __init__(self, remote, schema_helper, probe_interval=None,
-                 leader_only=True):
-        """Creates and returns a connection to the database named 'db_name' on
-        'remote', which should be in a form acceptable to
-        ovs.jsonrpc.session.open().  The connection will maintain an in-memory
-        replica of the remote database.
-
-        'remote' can be comma separated multiple remotes and each remote
-        should be in a form acceptable to ovs.jsonrpc.session.open().
-
-        'schema_helper' should be an instance of the SchemaHelper class which
-        generates schema for the remote database. The caller may have cut it
-        down by removing tables or columns that are not of interest.  The IDL
-        will only replicate the tables and columns that remain.  The caller may
-        also add an attribute named 'alert' to selected remaining columns,
-        setting its value to False; if so, then changes to those columns will
-        not be considered changes to the database for the purpose of the return
-        value of Idl.run() and Idl.change_seqno.  This is useful for columns
-        that the IDL's client will write but not read.
-
-        As a convenience to users, 'schema' may also be an instance of the
-        SchemaHelper class.
-
-        The IDL uses and modifies 'schema' directly.
-
-        If 'leader_only' is set to True (default value) the IDL will only
-        monitor and transact with the leader of the cluster.
-
-        If "probe_interval" is zero it disables the connection keepalive
-        feature. If non-zero the value will be forced to at least 1000
-        milliseconds. If None it will just use the default value in OVS.
-        """
-
-        assert isinstance(schema_helper, SchemaHelper)
-        schema = schema_helper.get_idl_schema()
-
-        self.tables = schema.tables
-        self.readonly = schema.readonly
-        self._db = schema
-        remotes = self._parse_remotes(remote)
-        self._session = ovs.jsonrpc.Session.open_multiple(remotes,
-            probe_interval=probe_interval)
-        self._monitor_request_id = None
-        self._last_seqno = None
-        self.change_seqno = 0
-        self.uuid = uuid.uuid1()
-
-        # Server monitor.
-        self._server_schema_request_id = None
-        self._server_monitor_request_id = None
-        self._db_change_aware_request_id = None
-        self._server_db_name = '_Server'
-        self._server_db_table = 'Database'
-        self.server_tables = None
-        self._server_db = None
-        self.server_monitor_uuid = uuid.uuid1()
-        self.leader_only = leader_only
-        self.cluster_id = None
-        self._min_index = 0
-
-        self.state = self.IDL_S_INITIAL
-
-        # Database locking.
-        self.lock_name = None          # Name of lock we need, None if none.
-        self.has_lock = False          # Has db server said we have the lock?
-        self.is_lock_contended = False  # Has db server said we can't get lock?
-        self._lock_request_id = None   # JSON-RPC ID of in-flight lock request.
-
-        # Transaction support.
-        self.txn = None
-        self._outstanding_txns = {}
-
-        for table in six.itervalues(schema.tables):
-            for column in six.itervalues(table.columns):
-                if not hasattr(column, 'alert'):
-                    column.alert = True
-            table.need_table = False
-            table.rows = custom_index.IndexedRows(table)
-            table.idl = self
-            table.condition = [True]
-            table.cond_changed = False
-
-    def _parse_remotes(self, remote):
-        # If remote is -
-        # "tcp:10.0.0.1:6641,unix:/tmp/db.sock,t,s,tcp:10.0.0.2:6642"
-        # this function returns
-        # ["tcp:10.0.0.1:6641", "unix:/tmp/db.sock,t,s", tcp:10.0.0.2:6642"]
-        remotes = []
-        for r in remote.split(','):
-            if remotes and r.find(":") == -1:
-                remotes[-1] += "," + r
-            else:
-                remotes.append(r)
-        return remotes
-
-    def set_cluster_id(self, cluster_id):
-        """Set the id of the cluster that this idl must connect to."""
-        self.cluster_id = cluster_id
-        if self.state != self.IDL_S_INITIAL:
-            self.force_reconnect()
-
-    def index_create(self, table, name):
-        """Create a named multi-column index on a table"""
-        return self.tables[table].rows.index_create(name)
-
-    def index_irange(self, table, name, start, end):
-        """Return items in a named index between start/end inclusive"""
-        return self.tables[table].rows.indexes[name].irange(start, end)
-
-    def index_equal(self, table, name, value):
-        """Return items in a named index matching a value"""
-        return self.tables[table].rows.indexes[name].irange(value, value)
-
-    def close(self):
-        """Closes the connection to the database.  The IDL will no longer
-        update."""
-        self._session.close()
-
-    def run(self):
-        """Processes a batch of messages from the database server.  Returns
-        True if the database as seen through the IDL changed, False if it did
-        not change.  The initial fetch of the entire contents of the remote
-        database is considered to be one kind of change.  If the IDL has been
-        configured to acquire a database lock (with Idl.set_lock()), then
-        successfully acquiring the lock is also considered to be a change.
-
-        This function can return occasional false positives, that is, report
-        that the database changed even though it didn't.  This happens if the
-        connection to the database drops and reconnects, which causes the
-        database contents to be reloaded even if they didn't change.  (It could
-        also happen if the database server sends out a "change" that reflects
-        what we already thought was in the database, but the database server is
-        not supposed to do that.)
-
-        As an alternative to checking the return value, the client may check
-        for changes in self.change_seqno."""
-        assert not self.txn
-        initial_change_seqno = self.change_seqno
-
-        self.send_cond_change()
-        self._session.run()
-        i = 0
-        while i < 50:
-            i += 1
-            if not self._session.is_connected():
-                break
-
-            seqno = self._session.get_seqno()
-            if seqno != self._last_seqno:
-                self._last_seqno = seqno
-                self.__txn_abort_all()
-                self.__send_server_schema_request()
-                if self.lock_name:
-                    self.__send_lock_request()
-                break
-
-            msg = self._session.recv()
-            if msg is None:
-                break
-
-            if (msg.type == ovs.jsonrpc.Message.T_NOTIFY
-                    and msg.method == "update2"
-                    and len(msg.params) == 2):
-                # Database contents changed.
-                self.__parse_update(msg.params[1], OVSDB_UPDATE2)
-            elif (msg.type == ovs.jsonrpc.Message.T_NOTIFY
-                    and msg.method == "update"
-                    and len(msg.params) == 2):
-                # Database contents changed.
-                if msg.params[0] == str(self.server_monitor_uuid):
-                    self.__parse_update(msg.params[1], OVSDB_UPDATE,
-                                        tables=self.server_tables)
-                    self.change_seqno = initial_change_seqno
-                    if not self.__check_server_db():
-                        self.force_reconnect()
-                        break
-                else:
-                    self.__parse_update(msg.params[1], OVSDB_UPDATE)
-            elif (msg.type == ovs.jsonrpc.Message.T_REPLY
-                  and self._monitor_request_id is not None
-                  and self._monitor_request_id == msg.id):
-                # Reply to our "monitor" request.
-                try:
-                    self.change_seqno += 1
-                    self._monitor_request_id = None
-                    self.__clear()
-                    if self.state == self.IDL_S_DATA_MONITOR_COND_REQUESTED:
-                        self.__parse_update(msg.result, OVSDB_UPDATE2)
-                    else:
-                        assert self.state == self.IDL_S_DATA_MONITOR_REQUESTED
-                        self.__parse_update(msg.result, OVSDB_UPDATE)
-
-                except error.Error as e:
-                    vlog.err("%s: parse error in received schema: %s"
-                             % (self._session.get_name(), e))
-                    self.__error()
-            elif (msg.type == ovs.jsonrpc.Message.T_REPLY
-                  and self._server_schema_request_id is not None
-                  and self._server_schema_request_id == msg.id):
-                # Reply to our "get_schema" of _Server request.
-                try:
-                    self._server_schema_request_id = None
-                    sh = SchemaHelper(None, msg.result)
-                    sh.register_table(self._server_db_table)
-                    schema = sh.get_idl_schema()
-                    self._server_db = schema
-                    self.server_tables = schema.tables
-                    self.__send_server_monitor_request()
-                except error.Error as e:
-                    vlog.err("%s: error receiving server schema: %s"
-                             % (self._session.get_name(), e))
-                    if self.cluster_id:
-                        self.__error()
-                        break
-                    else:
-                        self.change_seqno = initial_change_seqno
-                        self.__send_monitor_request()
-            elif (msg.type == ovs.jsonrpc.Message.T_REPLY
-                  and self._server_monitor_request_id is not None
-                  and self._server_monitor_request_id == msg.id):
-                # Reply to our "monitor" of _Server request.
-                try:
-                    self._server_monitor_request_id = None
-                    self.__parse_update(msg.result, OVSDB_UPDATE,
-                                        tables=self.server_tables)
-                    self.change_seqno = initial_change_seqno
-                    if self.__check_server_db():
-                        self.__send_monitor_request()
-                        self.__send_db_change_aware()
-                    else:
-                        self.force_reconnect()
-                        break
-                except error.Error as e:
-                    vlog.err("%s: parse error in received schema: %s"
-                             % (self._session.get_name(), e))
-                    if self.cluster_id:
-                        self.__error()
-                        break
-                    else:
-                        self.change_seqno = initial_change_seqno
-                        self.__send_monitor_request()
-            elif (msg.type == ovs.jsonrpc.Message.T_REPLY
-                  and self._db_change_aware_request_id is not None
-                  and self._db_change_aware_request_id == msg.id):
-                # Reply to us notifying the server of our change awarness.
-                self._db_change_aware_request_id = None
-            elif (msg.type == ovs.jsonrpc.Message.T_REPLY
-                  and self._lock_request_id is not None
-                  and self._lock_request_id == msg.id):
-                # Reply to our "lock" request.
-                self.__parse_lock_reply(msg.result)
-            elif (msg.type == ovs.jsonrpc.Message.T_NOTIFY
-                  and msg.method == "locked"):
-                # We got our lock.
-                self.__parse_lock_notify(msg.params, True)
-            elif (msg.type == ovs.jsonrpc.Message.T_NOTIFY
-                  and msg.method == "stolen"):
-                # Someone else stole our lock.
-                self.__parse_lock_notify(msg.params, False)
-            elif msg.type == ovs.jsonrpc.Message.T_NOTIFY and msg.id == "echo":
-                # Reply to our echo request.  Ignore it.
-                pass
-            elif (msg.type == ovs.jsonrpc.Message.T_ERROR and
-                  self.state == self.IDL_S_DATA_MONITOR_COND_REQUESTED and
-                  self._monitor_request_id == msg.id):
-                if msg.error == "unknown method":
-                    self.__send_monitor_request()
-            elif (msg.type == ovs.jsonrpc.Message.T_ERROR and
-                  self._server_schema_request_id is not None and
-                  self._server_schema_request_id == msg.id):
-                self._server_schema_request_id = None
-                if self.cluster_id:
-                    self.force_reconnect()
-                    break
-                else:
-                    self.change_seqno = initial_change_seqno
-                    self.__send_monitor_request()
-            elif (msg.type in (ovs.jsonrpc.Message.T_ERROR,
-                               ovs.jsonrpc.Message.T_REPLY)
-                  and self.__txn_process_reply(msg)):
-                # __txn_process_reply() did everything needed.
-                pass
-            else:
-                # This can happen if a transaction is destroyed before we
-                # receive the reply, so keep the log level low.
-                vlog.dbg("%s: received unexpected %s message"
-                         % (self._session.get_name(),
-                             ovs.jsonrpc.Message.type_to_string(msg.type)))
-
-        return initial_change_seqno != self.change_seqno
-
-    def send_cond_change(self):
-        if not self._session.is_connected():
-            return
-
-        for table in six.itervalues(self.tables):
-            if table.cond_changed:
-                self.__send_cond_change(table, table.condition)
-                table.cond_changed = False
-
-    def cond_change(self, table_name, cond):
-        """Sets the condition for 'table_name' to 'cond', which should be a
-        conditional expression suitable for use directly in the OVSDB
-        protocol, with the exception that the empty condition []
-        matches no rows (instead of matching every row).  That is, []
-        is equivalent to [False], not to [True].
-        """
-
-        table = self.tables.get(table_name)
-        if not table:
-            raise error.Error('Unknown table "%s"' % table_name)
-
-        if cond == []:
-            cond = [False]
-        if table.condition != cond:
-            table.condition = cond
-            table.cond_changed = True
-
-    def wait(self, poller):
-        """Arranges for poller.block() to wake up when self.run() has something
-        to do or when activity occurs on a transaction on 'self'."""
-        self._session.wait(poller)
-        self._session.recv_wait(poller)
-
-    def has_ever_connected(self):
-        """Returns True, if the IDL successfully connected to the remote
-        database and retrieved its contents (even if the connection
-        subsequently dropped and is in the process of reconnecting).  If so,
-        then the IDL contains an atomic snapshot of the database's contents
-        (but it might be arbitrarily old if the connection dropped).
-
-        Returns False if the IDL has never connected or retrieved the
-        database's contents.  If so, the IDL is empty."""
-        return self.change_seqno != 0
-
-    def force_reconnect(self):
-        """Forces the IDL to drop its connection to the database and reconnect.
-        In the meantime, the contents of the IDL will not change."""
-        self._session.force_reconnect()
-
-    def session_name(self):
-        return self._session.get_name()
-
-    def set_lock(self, lock_name):
-        """If 'lock_name' is not None, configures the IDL to obtain the named
-        lock from the database server and to avoid modifying the database when
-        the lock cannot be acquired (that is, when another client has the same
-        lock).
-
-        If 'lock_name' is None, drops the locking requirement and releases the
-        lock."""
-        assert not self.txn
-        assert not self._outstanding_txns
-
-        if self.lock_name and (not lock_name or lock_name != self.lock_name):
-            # Release previous lock.
-            self.__send_unlock_request()
-            self.lock_name = None
-            self.is_lock_contended = False
-
-        if lock_name and not self.lock_name:
-            # Acquire new lock.
-            self.lock_name = lock_name
-            self.__send_lock_request()
-
-    def notify(self, event, row, updates=None):
-        """Hook for implementing create/update/delete notifications
-
-        :param event:   The event that was triggered
-        :type event:    ROW_CREATE, ROW_UPDATE, or ROW_DELETE
-        :param row:     The row as it is after the operation has occured
-        :type row:      Row
-        :param updates: For updates, row with only old values of the changed
-                        columns
-        :type updates:  Row
-        """
-
-    def __send_cond_change(self, table, cond):
-        monitor_cond_change = {table.name: [{"where": cond}]}
-        old_uuid = str(self.uuid)
-        self.uuid = uuid.uuid1()
-        params = [old_uuid, str(self.uuid), monitor_cond_change]
-        msg = ovs.jsonrpc.Message.create_request("monitor_cond_change", params)
-        self._session.send(msg)
-
-    def __clear(self):
-        changed = False
-
-        for table in six.itervalues(self.tables):
-            if table.rows:
-                changed = True
-                table.rows = custom_index.IndexedRows(table)
-
-        if changed:
-            self.change_seqno += 1
-
-    def __update_has_lock(self, new_has_lock):
-        if new_has_lock and not self.has_lock:
-            if self._monitor_request_id is None:
-                self.change_seqno += 1
-            else:
-                # We're waiting for a monitor reply, so don't signal that the
-                # database changed.  The monitor reply will increment
-                # change_seqno anyhow.
-                pass
-            self.is_lock_contended = False
-        self.has_lock = new_has_lock
-
-    def __do_send_lock_request(self, method):
-        self.__update_has_lock(False)
-        self._lock_request_id = None
-        if self._session.is_connected():
-            msg = ovs.jsonrpc.Message.create_request(method, [self.lock_name])
-            msg_id = msg.id
-            self._session.send(msg)
-        else:
-            msg_id = None
-        return msg_id
-
-    def __send_lock_request(self):
-        self._lock_request_id = self.__do_send_lock_request("lock")
-
-    def __send_unlock_request(self):
-        self.__do_send_lock_request("unlock")
-
-    def __parse_lock_reply(self, result):
-        self._lock_request_id = None
-        got_lock = isinstance(result, dict) and result.get("locked") is True
-        self.__update_has_lock(got_lock)
-        if not got_lock:
-            self.is_lock_contended = True
-
-    def __parse_lock_notify(self, params, new_has_lock):
-        if (self.lock_name is not None
-            and isinstance(params, (list, tuple))
-            and params
-            and params[0] == self.lock_name):
-            self.__update_has_lock(new_has_lock)
-            if not new_has_lock:
-                self.is_lock_contended = True
-
-    def __send_db_change_aware(self):
-        msg = ovs.jsonrpc.Message.create_request("set_db_change_aware",
-                                                 [True])
-        self._db_change_aware_request_id = msg.id
-        self._session.send(msg)
-
-    def __send_monitor_request(self):
-        if (self.state in [self.IDL_S_SERVER_MONITOR_REQUESTED,
-                           self.IDL_S_INITIAL]):
-            self.state = self.IDL_S_DATA_MONITOR_COND_REQUESTED
-            method = "monitor_cond"
-        else:
-            self.state = self.IDL_S_DATA_MONITOR_REQUESTED
-            method = "monitor"
-
-        monitor_requests = {}
-        for table in six.itervalues(self.tables):
-            columns = []
-            for column in six.iterkeys(table.columns):
-                if ((table.name not in self.readonly) or
-                        (table.name in self.readonly) and
-                        (column not in self.readonly[table.name])):
-                    columns.append(column)
-            monitor_request = {"columns": columns}
-            if method == "monitor_cond" and table.condition != [True]:
-                monitor_request["where"] = table.condition
-                table.cond_change = False
-            monitor_requests[table.name] = [monitor_request]
-
-        msg = ovs.jsonrpc.Message.create_request(
-            method, [self._db.name, str(self.uuid), monitor_requests])
-        self._monitor_request_id = msg.id
-        self._session.send(msg)
-
-    def __send_server_schema_request(self):
-        self.state = self.IDL_S_SERVER_SCHEMA_REQUESTED
-        msg = ovs.jsonrpc.Message.create_request(
-            "get_schema", [self._server_db_name, str(self.uuid)])
-        self._server_schema_request_id = msg.id
-        self._session.send(msg)
-
-    def __send_server_monitor_request(self):
-        self.state = self.IDL_S_SERVER_MONITOR_REQUESTED
-        monitor_requests = {}
-        table = self.server_tables[self._server_db_table]
-        columns = [column for column in six.iterkeys(table.columns)]
-        for column in six.itervalues(table.columns):
-            if not hasattr(column, 'alert'):
-                column.alert = True
-        table.rows = custom_index.IndexedRows(table)
-        table.need_table = False
-        table.idl = self
-        monitor_request = {"columns": columns}
-        monitor_requests[table.name] = [monitor_request]
-        msg = ovs.jsonrpc.Message.create_request(
-            'monitor', [self._server_db.name,
-                             str(self.server_monitor_uuid),
-                             monitor_requests])
-        self._server_monitor_request_id = msg.id
-        self._session.send(msg)
-
-    def __parse_update(self, update, version, tables=None):
-        try:
-            if not tables:
-                self.__do_parse_update(update, version, self.tables)
-            else:
-                self.__do_parse_update(update, version, tables)
-        except error.Error as e:
-            vlog.err("%s: error parsing update: %s"
-                     % (self._session.get_name(), e))
-
-    def __do_parse_update(self, table_updates, version, tables):
-        if not isinstance(table_updates, dict):
-            raise error.Error("<table-updates> is not an object",
-                              table_updates)
-
-        for table_name, table_update in six.iteritems(table_updates):
-            table = tables.get(table_name)
-            if not table:
-                raise error.Error('<table-updates> includes unknown '
-                                  'table "%s"' % table_name)
-
-            if not isinstance(table_update, dict):
-                raise error.Error('<table-update> for table "%s" is not '
-                                  'an object' % table_name, table_update)
-
-            for uuid_string, row_update in six.iteritems(table_update):
-                if not ovs.ovsuuid.is_valid_string(uuid_string):
-                    raise error.Error('<table-update> for table "%s" '
-                                      'contains bad UUID "%s" as member '
-                                      'name' % (table_name, uuid_string),
-                                      table_update)
-                uuid = ovs.ovsuuid.from_string(uuid_string)
-
-                if not isinstance(row_update, dict):
-                    raise error.Error('<table-update> for table "%s" '
-                                      'contains <row-update> for %s that '
-                                      'is not an object'
-                                      % (table_name, uuid_string))
-
-                if version == OVSDB_UPDATE2:
-                    if self.__process_update2(table, uuid, row_update):
-                        self.change_seqno += 1
-                    continue
-
-                parser = ovs.db.parser.Parser(row_update, "row-update")
-                old = parser.get_optional("old", [dict])
-                new = parser.get_optional("new", [dict])
-                parser.finish()
-
-                if not old and not new:
-                    raise error.Error('<row-update> missing "old" and '
-                                      '"new" members', row_update)
-
-                if self.__process_update(table, uuid, old, new):
-                    self.change_seqno += 1
-
-    def __process_update2(self, table, uuid, row_update):
-        row = table.rows.get(uuid)
-        changed = False
-        if "delete" in row_update:
-            if row:
-                del table.rows[uuid]
-                self.notify(ROW_DELETE, row)
-                changed = True
-            else:
-                # XXX rate-limit
-                vlog.warn("cannot delete missing row %s from table"
-                          "%s" % (uuid, table.name))
-        elif "insert" in row_update or "initial" in row_update:
-            if row:
-                vlog.warn("cannot add existing row %s from table"
-                          " %s" % (uuid, table.name))
-                del table.rows[uuid]
-            row = self.__create_row(table, uuid)
-            if "insert" in row_update:
-                row_update = row_update['insert']
-            else:
-                row_update = row_update['initial']
-            self.__add_default(table, row_update)
-            changed = self.__row_update(table, row, row_update)
-            table.rows[uuid] = row
-            if changed:
-                self.notify(ROW_CREATE, row)
-        elif "modify" in row_update:
-            if not row:
-                raise error.Error('Modify non-existing row')
-
-            old_row = self.__apply_diff(table, row, row_update['modify'])
-            self.notify(ROW_UPDATE, row, Row(self, table, uuid, old_row))
-            changed = True
-        else:
-            raise error.Error('<row-update> unknown operation',
-                              row_update)
-        return changed
-
-    def __process_update(self, table, uuid, old, new):
-        """Returns True if a column changed, False otherwise."""
-        row = table.rows.get(uuid)
-        changed = False
-        if not new:
-            # Delete row.
-            if row:
-                del table.rows[uuid]
-                changed = True
-                self.notify(ROW_DELETE, row)
-            else:
-                # XXX rate-limit
-                vlog.warn("cannot delete missing row %s from table %s"
-                          % (uuid, table.name))
-        elif not old:
-            # Insert row.
-            op = ROW_CREATE
-            if not row:
-                row = self.__create_row(table, uuid)
-                changed = True
-            else:
-                # XXX rate-limit
-                op = ROW_UPDATE
-                vlog.warn("cannot add existing row %s to table %s"
-                          % (uuid, table.name))
-            changed |= self.__row_update(table, row, new)
-            if op == ROW_CREATE:
-                table.rows[uuid] = row
-            if changed:
-                self.notify(ROW_CREATE, row)
-        else:
-            op = ROW_UPDATE
-            if not row:
-                row = self.__create_row(table, uuid)
-                changed = True
-                op = ROW_CREATE
-                # XXX rate-limit
-                vlog.warn("cannot modify missing row %s in table %s"
-                          % (uuid, table.name))
-            changed |= self.__row_update(table, row, new)
-            if op == ROW_CREATE:
-                table.rows[uuid] = row
-            if changed:
-                self.notify(op, row, Row.from_json(self, table, uuid, old))
-        return changed
-
-    def __check_server_db(self):
-        """Returns True if this is a valid server database, False otherwise."""
-        session_name = self.session_name()
-
-        if self._server_db_table not in self.server_tables:
-            vlog.info("%s: server does not have %s table in its %s database"
-                      % (session_name, self._server_db_table,
-                         self._server_db_name))
-            return False
-
-        rows = self.server_tables[self._server_db_table].rows
-
-        database = None
-        for row in six.itervalues(rows):
-            if self.cluster_id:
-                if self.cluster_id in \
-                   map(lambda x: str(x)[:4], row.cid):
-                    database = row
-                    break
-            elif row.name == self._db.name:
-                database = row
-                break
-
-        if not database:
-            vlog.info("%s: server does not have %s database"
-                      % (session_name, self._db.name))
-            return False
-
-        if (database.model == CLUSTERED and
-            self._session.get_num_of_remotes() > 1):
-            if not database.schema:
-                vlog.info('%s: clustered database server has not yet joined '
-                          'cluster; trying another server' % session_name)
-                return False
-            if not database.connected:
-                vlog.info('%s: clustered database server is disconnected '
-                          'from cluster; trying another server' % session_name)
-                return False
-            if (self.leader_only and
-                not database.leader):
-                vlog.info('%s: clustered database server is not cluster '
-                          'leader; trying another server' % session_name)
-                return False
-            if database.index:
-                if database.index[0] < self._min_index:
-                    vlog.warn('%s: clustered database server has stale data; '
-                              'trying another server' % session_name)
-                    return False
-                self._min_index = database.index[0]
-
-        return True
-
-    def __column_name(self, column):
-        if column.type.key.type == ovs.db.types.UuidType:
-            return ovs.ovsuuid.to_json(column.type.key.type.default)
-        else:
-            return column.type.key.type.default
-
-    def __add_default(self, table, row_update):
-        for column in six.itervalues(table.columns):
-            if column.name not in row_update:
-                if ((table.name not in self.readonly) or
-                        (table.name in self.readonly) and
-                        (column.name not in self.readonly[table.name])):
-                    if column.type.n_min != 0 and not column.type.is_map():
-                        row_update[column.name] = self.__column_name(column)
-
-    def __apply_diff(self, table, row, row_diff):
-        old_row = {}
-        for column_name, datum_diff_json in six.iteritems(row_diff):
-            column = table.columns.get(column_name)
-            if not column:
-                # XXX rate-limit
-                vlog.warn("unknown column %s updating table %s"
-                          % (column_name, table.name))
-                continue
-
-            try:
-                datum_diff = data.Datum.from_json(column.type, datum_diff_json)
-            except error.Error as e:
-                # XXX rate-limit
-                vlog.warn("error parsing column %s in table %s: %s"
-                          % (column_name, table.name, e))
-                continue
-
-            old_row[column_name] = row._data[column_name].copy()
-            datum = row._data[column_name].diff(datum_diff)
-            if datum != row._data[column_name]:
-                row._data[column_name] = datum
-
-        return old_row
-
-    def __row_update(self, table, row, row_json):
-        changed = False
-        for column_name, datum_json in six.iteritems(row_json):
-            column = table.columns.get(column_name)
-            if not column:
-                # XXX rate-limit
-                vlog.warn("unknown column %s updating table %s"
-                          % (column_name, table.name))
-                continue
-
-            try:
-                datum = data.Datum.from_json(column.type, datum_json)
-            except error.Error as e:
-                # XXX rate-limit
-                vlog.warn("error parsing column %s in table %s: %s"
-                          % (column_name, table.name, e))
-                continue
-
-            if datum != row._data[column_name]:
-                row._data[column_name] = datum
-                if column.alert:
-                    changed = True
-            else:
-                # Didn't really change but the OVSDB monitor protocol always
-                # includes every value in a row.
-                pass
-        return changed
-
-    def __create_row(self, table, uuid):
-        data = {}
-        for column in six.itervalues(table.columns):
-            data[column.name] = ovs.db.data.Datum.default(column.type)
-        return Row(self, table, uuid, data)
-
-    def __error(self):
-        self._session.force_reconnect()
-
-    def __txn_abort_all(self):
-        while self._outstanding_txns:
-            txn = self._outstanding_txns.popitem()[1]
-            txn._status = Transaction.TRY_AGAIN
-
-    def __txn_process_reply(self, msg):
-        txn = self._outstanding_txns.pop(msg.id, None)
-        if txn:
-            txn._process_reply(msg)
-            return True
-
-
-def _uuid_to_row(atom, base):
-    if base.ref_table:
-        return base.ref_table.rows.get(atom)
-    else:
-        return atom
-
-
-def _row_to_uuid(value):
-    if isinstance(value, Row):
-        return value.uuid
-    else:
-        return value
-
-
-@functools.total_ordering
-class Row(object):
-    """A row within an IDL.
-
-    The client may access the following attributes directly:
-
-    - 'uuid': a uuid.UUID object whose value is the row's database UUID.
-
-    - An attribute for each column in the Row's table, named for the column,
-      whose values are as returned by Datum.to_python() for the column's type.
-
-      If some error occurs (e.g. the database server's idea of the column is
-      different from the IDL's idea), then the attribute values is the
-      "default" value return by Datum.default() for the column's type.  (It is
-      important to know this because the default value may violate constraints
-      for the column's type, e.g. the default integer value is 0 even if column
-      contraints require the column's value to be positive.)
-
-      When a transaction is active, column attributes may also be assigned new
-      values.  Committing the transaction will then cause the new value to be
-      stored into the database.
-
-      *NOTE*: In the current implementation, the value of a column is a *copy*
-      of the value in the database.  This means that modifying its value
-      directly will have no useful effect.  For example, the following:
-        row.mycolumn["a"] = "b"              # don't do this
-      will not change anything in the database, even after commit.  To modify
-      the column, instead assign the modified column value back to the column:
-        d = row.mycolumn
-        d["a"] = "b"
-        row.mycolumn = d
-"""
-    def __init__(self, idl, table, uuid, data):
-        # All of the explicit references to self.__dict__ below are required
-        # to set real attributes with invoking self.__getattr__().
-        self.__dict__["uuid"] = uuid
-
-        self.__dict__["_idl"] = idl
-        self.__dict__["_table"] = table
-
-        # _data is the committed data.  It takes the following values:
-        #
-        #   - A dictionary that maps every column name to a Datum, if the row
-        #     exists in the committed form of the database.
-        #
-        #   - None, if this row is newly inserted within the active transaction
-        #     and thus has no committed form.
-        self.__dict__["_data"] = data
-
-        # _changes describes changes to this row within the active transaction.
-        # It takes the following values:
-        #
-        #   - {}, the empty dictionary, if no transaction is active or if the
-        #     row has yet not been changed within this transaction.
-        #
-        #   - A dictionary that maps a column name to its new Datum, if an
-        #     active transaction changes those columns' values.
-        #
-        #   - A dictionary that maps every column name to a Datum, if the row
-        #     is newly inserted within the active transaction.
-        #
-        #   - None, if this transaction deletes this row.
-        self.__dict__["_changes"] = {}
-
-        # _mutations describes changes to this row to be handled via a
-        # mutate operation on the wire.  It takes the following values:
-        #
-        #   - {}, the empty dictionary, if no transaction is active or if the
-        #     row has yet not been mutated within this transaction.
-        #
-        #   - A dictionary that contains two keys:
-        #
-        #     - "_inserts" contains a dictionary that maps column names to
-        #       new keys/key-value pairs that should be inserted into the
-        #       column
-        #     - "_removes" contains a dictionary that maps column names to
-        #       the keys/key-value pairs that should be removed from the
-        #       column
-        #
-        #   - None, if this transaction deletes this row.
-        self.__dict__["_mutations"] = {}
-
-        # A dictionary whose keys are the names of columns that must be
-        # verified as prerequisites when the transaction commits.  The values
-        # in the dictionary are all None.
-        self.__dict__["_prereqs"] = {}
-
-    def __lt__(self, other):
-        if not isinstance(other, Row):
-            return NotImplemented
-        return bool(self.__dict__['uuid'] < other.__dict__['uuid'])
-
-    def __eq__(self, other):
-        if not isinstance(other, Row):
-            return NotImplemented
-        return bool(self.__dict__['uuid'] == other.__dict__['uuid'])
-
-    def __hash__(self):
-        return int(self.__dict__['uuid'])
-
-    def __getattr__(self, column_name):
-        assert self._changes is not None
-        assert self._mutations is not None
-
-        try:
-            column = self._table.columns[column_name]
-        except KeyError:
-            raise AttributeError("%s instance has no attribute '%s'" %
-                                 (self.__class__.__name__, column_name))
-        datum = self._changes.get(column_name)
-        inserts = None
-        if '_inserts' in self._mutations.keys():
-            inserts = self._mutations['_inserts'].get(column_name)
-        removes = None
-        if '_removes' in self._mutations.keys():
-            removes = self._mutations['_removes'].get(column_name)
-        if datum is None:
-            if self._data is None:
-                if inserts is None:
-                    raise AttributeError("%s instance has no attribute '%s'" %
-                                         (self.__class__.__name__,
-                                          column_name))
-                else:
-                    datum = data.Datum.from_python(column.type,
-                                                   inserts,
-                                                   _row_to_uuid)
-            elif column_name in self._data:
-                datum = self._data[column_name]
-                if column.type.is_set():
-                    dlist = datum.as_list()
-                    if inserts is not None:
-                        dlist.extend(list(inserts))
-                    if removes is not None:
-                        removes_datum = data.Datum.from_python(column.type,
-                                                              removes,
-                                                              _row_to_uuid)
-                        removes_list = removes_datum.as_list()
-                        dlist = [x for x in dlist if x not in removes_list]
-                    datum = data.Datum.from_python(column.type, dlist,
-                                                   _row_to_uuid)
-                elif column.type.is_map():
-                    dmap = datum.to_python(_uuid_to_row)
-                    if inserts is not None:
-                        dmap.update(inserts)
-                    if removes is not None:
-                        for key in removes:
-                            if key not in (inserts or {}):
-                                dmap.pop(key, None)
-                    datum = data.Datum.from_python(column.type, dmap,
-                                                   _row_to_uuid)
-            else:
-                if inserts is None:
-                    raise AttributeError("%s instance has no attribute '%s'" %
-                                         (self.__class__.__name__,
-                                          column_name))
-                else:
-                    datum = inserts
-
-        return datum.to_python(_uuid_to_row)
-
-    def __setattr__(self, column_name, value):
-        assert self._changes is not None
-        assert self._idl.txn
-
-        if ((self._table.name in self._idl.readonly) and
-                (column_name in self._idl.readonly[self._table.name])):
-            vlog.warn("attempting to write to readonly column %s"
-                      % column_name)
-            return
-
-        column = self._table.columns[column_name]
-        try:
-            datum = data.Datum.from_python(column.type, value, _row_to_uuid)
-        except error.Error as e:
-            # XXX rate-limit
-            vlog.err("attempting to write bad value to column %s (%s)"
-                     % (column_name, e))
-            return
-        # Remove prior version of the Row from the index if it has the indexed
-        # column set, and the column changing is an indexed column
-        if hasattr(self, column_name):
-            for idx in self._table.rows.indexes.values():
-                if column_name in (c.column for c in idx.columns):
-                    idx.remove(self)
-        self._idl.txn._write(self, column, datum)
-        for idx in self._table.rows.indexes.values():
-            # Only update the index if indexed columns change
-            if column_name in (c.column for c in idx.columns):
-                idx.add(self)
-
-    def addvalue(self, column_name, key):
-        self._idl.txn._txn_rows[self.uuid] = self
-        column = self._table.columns[column_name]
-        try:
-            data.Datum.from_python(column.type, key, _row_to_uuid)
-        except error.Error as e:
-            # XXX rate-limit
-            vlog.err("attempting to write bad value to column %s (%s)"
-                     % (column_name, e))
-            return
-        inserts = self._mutations.setdefault('_inserts', {})
-        column_value = inserts.setdefault(column_name, set())
-        column_value.add(key)
-
-    def delvalue(self, column_name, key):
-        self._idl.txn._txn_rows[self.uuid] = self
-        column = self._table.columns[column_name]
-        try:
-            data.Datum.from_python(column.type, key, _row_to_uuid)
-        except error.Error as e:
-            # XXX rate-limit
-            vlog.err("attempting to delete bad value from column %s (%s)"
-                     % (column_name, e))
-            return
-        removes = self._mutations.setdefault('_removes', {})
-        column_value = removes.setdefault(column_name, set())
-        column_value.add(key)
-
-    def setkey(self, column_name, key, value):
-        self._idl.txn._txn_rows[self.uuid] = self
-        column = self._table.columns[column_name]
-        try:
-            data.Datum.from_python(column.type, {key: value}, _row_to_uuid)
-        except error.Error as e:
-            # XXX rate-limit
-            vlog.err("attempting to write bad value to column %s (%s)"
-                     % (column_name, e))
-            return
-        if self._data and column_name in self._data:
-            # Remove existing key/value before updating.
-            removes = self._mutations.setdefault('_removes', {})
-            column_value = removes.setdefault(column_name, set())
-            column_value.add(key)
-        inserts = self._mutations.setdefault('_inserts', {})
-        column_value = inserts.setdefault(column_name, {})
-        column_value[key] = value
-
-    def delkey(self, column_name, key, value=None):
-        self._idl.txn._txn_rows[self.uuid] = self
-        if value:
-            try:
-                old_value = data.Datum.to_python(self._data[column_name],
-                                                 _uuid_to_row)
-            except error.Error:
-                return
-            if key not in old_value:
-                return
-            if old_value[key] != value:
-                return
-        removes = self._mutations.setdefault('_removes', {})
-        column_value = removes.setdefault(column_name, set())
-        column_value.add(key)
-        return
-
-    @classmethod
-    def from_json(cls, idl, table, uuid, row_json):
-        data = {}
-        for column_name, datum_json in six.iteritems(row_json):
-            column = table.columns.get(column_name)
-            if not column:
-                # XXX rate-limit
-                vlog.warn("unknown column %s in table %s"
-                          % (column_name, table.name))
-                continue
-            try:
-                datum = ovs.db.data.Datum.from_json(column.type, datum_json)
-            except error.Error as e:
-                # XXX rate-limit
-                vlog.warn("error parsing column %s in table %s: %s"
-                          % (column_name, table.name, e))
-                continue
-            data[column_name] = datum
-        return cls(idl, table, uuid, data)
-
-    def verify(self, column_name):
-        """Causes the original contents of column 'column_name' in this row to
-        be verified as a prerequisite to completing the transaction.  That is,
-        if 'column_name' changed in this row (or if this row was deleted)
-        between the time that the IDL originally read its contents and the time
-        that the transaction commits, then the transaction aborts and
-        Transaction.commit() returns Transaction.TRY_AGAIN.
-
-        The intention is that, to ensure that no transaction commits based on
-        dirty reads, an application should call Row.verify() on each data item
-        read as part of a read-modify-write operation.
-
-        In some cases Row.verify() reduces to a no-op, because the current
-        value of the column is already known:
-
-          - If this row is a row created by the current transaction (returned
-            by Transaction.insert()).
-
-          - If the column has already been modified within the current
-            transaction.
-
-        Because of the latter property, always call Row.verify() *before*
-        modifying the column, for a given read-modify-write.
-
-        A transaction must be in progress."""
-        assert self._idl.txn
-        assert self._changes is not None
-        if not self._data or column_name in self._changes:
-            return
-
-        self._prereqs[column_name] = None
-
-    def delete(self):
-        """Deletes this row from its table.
-
-        A transaction must be in progress."""
-        assert self._idl.txn
-        assert self._changes is not None
-        if self._data is None:
-            del self._idl.txn._txn_rows[self.uuid]
-        else:
-            self._idl.txn._txn_rows[self.uuid] = self
-        del self._table.rows[self.uuid]
-        self.__dict__["_changes"] = None
-
-    def fetch(self, column_name):
-        self._idl.txn._fetch(self, column_name)
-
-    def increment(self, column_name):
-        """Causes the transaction, when committed, to increment the value of
-        'column_name' within this row by 1.  'column_name' must have an integer
-        type.  After the transaction commits successfully, the client may
-        retrieve the final (incremented) value of 'column_name' with
-        Transaction.get_increment_new_value().
-
-        The client could accomplish something similar by reading and writing
-        and verify()ing columns.  However, increment() will never (by itself)
-        cause a transaction to fail because of a verify error.
-
-        The intended use is for incrementing the "next_cfg" column in
-        the Open_vSwitch table."""
-        self._idl.txn._increment(self, column_name)
-
-
-def _uuid_name_from_uuid(uuid):
-    return "row%s" % str(uuid).replace("-", "_")
-
-
-def _where_uuid_equals(uuid):
-    return [["_uuid", "==", ["uuid", str(uuid)]]]
-
-
-class _InsertedRow(object):
-    def __init__(self, op_index):
-        self.op_index = op_index
-        self.real = None
-
-
-class Transaction(object):
-    """A transaction may modify the contents of a database by modifying the
-    values of columns, deleting rows, inserting rows, or adding checks that
-    columns in the database have not changed ("verify" operations), through
-    Row methods.
-
-    Reading and writing columns and inserting and deleting rows are all
-    straightforward.  The reasons to verify columns are less obvious.
-    Verification is the key to maintaining transactional integrity.  Because
-    OVSDB handles multiple clients, it can happen that between the time that
-    OVSDB client A reads a column and writes a new value, OVSDB client B has
-    written that column.  Client A's write should not ordinarily overwrite
-    client B's, especially if the column in question is a "map" column that
-    contains several more or less independent data items.  If client A adds a
-    "verify" operation before it writes the column, then the transaction fails
-    in case client B modifies it first.  Client A will then see the new value
-    of the column and compose a new transaction based on the new contents
-    written by client B.
-
-    When a transaction is complete, which must be before the next call to
-    Idl.run(), call Transaction.commit() or Transaction.abort().
-
-    The life-cycle of a transaction looks like this:
-
-    1. Create the transaction and record the initial sequence number:
-
-        seqno = idl.change_seqno(idl)
-        txn = Transaction(idl)
-
-    2. Modify the database with Row and Transaction methods.
-
-    3. Commit the transaction by calling Transaction.commit().  The first call
-       to this function probably returns Transaction.INCOMPLETE.  The client
-       must keep calling again along as this remains true, calling Idl.run() in
-       between to let the IDL do protocol processing.  (If the client doesn't
-       have anything else to do in the meantime, it can use
-       Transaction.commit_block() to avoid having to loop itself.)
-
-    4. If the final status is Transaction.TRY_AGAIN, wait for Idl.change_seqno
-       to change from the saved 'seqno' (it's possible that it's already
-       changed, in which case the client should not wait at all), then start
-       over from step 1.  Only a call to Idl.run() will change the return value
-       of Idl.change_seqno.  (Transaction.commit_block() calls Idl.run().)"""
-
-    # Status values that Transaction.commit() can return.
-
-    # Not yet committed or aborted.
-    UNCOMMITTED = "uncommitted"
-    # Transaction didn't include any changes.
-    UNCHANGED = "unchanged"
-    # Commit in progress, please wait.
-    INCOMPLETE = "incomplete"
-    # ovsdb_idl_txn_abort() called.
-    ABORTED = "aborted"
-    # Commit successful.
-    SUCCESS = "success"
-    # Commit failed because a "verify" operation
-    # reported an inconsistency, due to a network
-    # problem, or other transient failure.  Wait
-    # for a change, then try again.
-    TRY_AGAIN = "try again"
-    # Server hasn't given us the lock yet.
-    NOT_LOCKED = "not locked"
-    # Commit failed due to a hard error.
-    ERROR = "error"
-
-    @staticmethod
-    def status_to_string(status):
-        """Converts one of the status values that Transaction.commit() can
-        return into a human-readable string.
-
-        (The status values are in fact such strings already, so
-        there's nothing to do.)"""
-        return status
-
-    def __init__(self, idl):
-        """Starts a new transaction on 'idl' (an instance of ovs.db.idl.Idl).
-        A given Idl may only have a single active transaction at a time.
-
-        A Transaction may modify the contents of a database by assigning new
-        values to columns (attributes of Row), deleting rows (with
-        Row.delete()), or inserting rows (with Transaction.insert()).  It may
-        also check that columns in the database have not changed with
-        Row.verify().
-
-        When a transaction is complete (which must be before the next call to
-        Idl.run()), call Transaction.commit() or Transaction.abort()."""
-        assert idl.txn is None
-
-        idl.txn = self
-        self._request_id = None
-        self.idl = idl
-        self.dry_run = False
-        self._txn_rows = {}
-        self._status = Transaction.UNCOMMITTED
-        self._error = None
-        self._comments = []
-
-        self._inc_row = None
-        self._inc_column = None
-
-        self._fetch_requests = []
-
-        self._inserted_rows = {}  # Map from UUID to _InsertedRow
-
-    def add_comment(self, comment):
-        """Appends 'comment' to the comments that will be passed to the OVSDB
-        server when this transaction is committed.  (The comment will be
-        committed to the OVSDB log, which "ovsdb-tool show-log" can print in a
-        relatively human-readable form.)"""
-        self._comments.append(comment)
-
-    def wait(self, poller):
-        """Causes poll_block() to wake up if this transaction has completed
-        committing."""
-        if self._status not in (Transaction.UNCOMMITTED,
-                                Transaction.INCOMPLETE):
-            poller.immediate_wake()
-
-    def _substitute_uuids(self, json):
-        if isinstance(json, (list, tuple)):
-            if (len(json) == 2
-                    and json[0] == 'uuid'
-                    and ovs.ovsuuid.is_valid_string(json[1])):
-                uuid = ovs.ovsuuid.from_string(json[1])
-                row = self._txn_rows.get(uuid, None)
-                if row and row._data is None:
-                    return ["named-uuid", _uuid_name_from_uuid(uuid)]
-            else:
-                return [self._substitute_uuids(elem) for elem in json]
-        return json
-
-    def __disassemble(self):
-        self.idl.txn = None
-
-        for row in six.itervalues(self._txn_rows):
-            if row._changes is None:
-                # If we add the deleted row back to rows with _changes == None
-                # then __getattr__ will not work for the indexes
-                row.__dict__["_changes"] = {}
-                row.__dict__["_mutations"] = {}
-                row._table.rows[row.uuid] = row
-            elif row._data is None:
-                del row._table.rows[row.uuid]
-            row.__dict__["_changes"] = {}
-            row.__dict__["_mutations"] = {}
-            row.__dict__["_prereqs"] = {}
-        self._txn_rows = {}
-
-    def commit(self):
-        """Attempts to commit 'txn'.  Returns the status of the commit
-        operation, one of the following constants:
-
-          Transaction.INCOMPLETE:
-
-              The transaction is in progress, but not yet complete.  The caller
-              should call again later, after calling Idl.run() to let the
-              IDL do OVSDB protocol processing.
-
-          Transaction.UNCHANGED:
-
-              The transaction is complete.  (It didn't actually change the
-              database, so the IDL didn't send any request to the database
-              server.)
-
-          Transaction.ABORTED:
-
-              The caller previously called Transaction.abort().
-
-          Transaction.SUCCESS:
-
-              The transaction was successful.  The update made by the
-              transaction (and possibly other changes made by other database
-              clients) should already be visible in the IDL.
-
-          Transaction.TRY_AGAIN:
-
-              The transaction failed for some transient reason, e.g. because a
-              "verify" operation reported an inconsistency or due to a network
-              problem.  The caller should wait for a change to the database,
-              then compose a new transaction, and commit the new transaction.
-
-              Use Idl.change_seqno to wait for a change in the database.  It is
-              important to use its value *before* the initial call to
-              Transaction.commit() as the baseline for this purpose, because
-              the change that one should wait for can happen after the initial
-              call but before the call that returns Transaction.TRY_AGAIN, and
-              using some other baseline value in that situation could cause an
-              indefinite wait if the database rarely changes.
-
-          Transaction.NOT_LOCKED:
-
-              The transaction failed because the IDL has been configured to
-              require a database lock (with Idl.set_lock()) but didn't
-              get it yet or has already lost it.
-
-        Committing a transaction rolls back all of the changes that it made to
-        the IDL's copy of the database.  If the transaction commits
-        successfully, then the database server will send an update and, thus,
-        the IDL will be updated with the committed changes."""
-        # The status can only change if we're the active transaction.
-        # (Otherwise, our status will change only in Idl.run().)
-        if self != self.idl.txn:
-            return self._status
-
-        # If we need a lock but don't have it, give up quickly.
-        if self.idl.lock_name and not self.idl.has_lock:
-            self._status = Transaction.NOT_LOCKED
-            self.__disassemble()
-            return self._status
-
-        operations = [self.idl._db.name]
-
-        # Assert that we have the required lock (avoiding a race).
-        if self.idl.lock_name:
-            operations.append({"op": "assert",
-                               "lock": self.idl.lock_name})
-
-        # Add prerequisites and declarations of new rows.
-        for row in six.itervalues(self._txn_rows):
-            if row._prereqs:
-                rows = {}
-                columns = []
-                for column_name in row._prereqs:
-                    columns.append(column_name)
-                    rows[column_name] = row._data[column_name].to_json()
-                operations.append({"op": "wait",
-                                   "table": row._table.name,
-                                   "timeout": 0,
-                                   "where": _where_uuid_equals(row.uuid),
-                                   "until": "==",
-                                   "columns": columns,
-                                   "rows": [rows]})
-
-        # Add updates.
-        any_updates = False
-        for row in six.itervalues(self._txn_rows):
-            if row._changes is None:
-                if row._table.is_root:
-                    operations.append({"op": "delete",
-                                       "table": row._table.name,
-                                       "where": _where_uuid_equals(row.uuid)})
-                    any_updates = True
-                else:
-                    # Let ovsdb-server decide whether to really delete it.
-                    pass
-            elif row._changes:
-                op = {"table": row._table.name}
-                if row._data is None:
-                    op["op"] = "insert"
-                    op["uuid-name"] = _uuid_name_from_uuid(row.uuid)
-                    any_updates = True
-
-                    op_index = len(operations) - 1
-                    self._inserted_rows[row.uuid] = _InsertedRow(op_index)
-                else:
-                    op["op"] = "update"
-                    op["where"] = _where_uuid_equals(row.uuid)
-
-                row_json = {}
-                op["row"] = row_json
-
-                for column_name, datum in six.iteritems(row._changes):
-                    if row._data is not None or not datum.is_default():
-                        row_json[column_name] = (
-                            self._substitute_uuids(datum.to_json()))
-
-                        # If anything really changed, consider it an update.
-                        # We can't suppress not-really-changed values earlier
-                        # or transactions would become nonatomic (see the big
-                        # comment inside Transaction._write()).
-                        if (not any_updates and row._data is not None and
-                                row._data[column_name] != datum):
-                            any_updates = True
-
-                if row._data is None or row_json:
-                    operations.append(op)
-            if row._mutations:
-                addop = False
-                op = {"table": row._table.name}
-                op["op"] = "mutate"
-                if row._data is None:
-                    # New row
-                    op["where"] = self._substitute_uuids(
-                        _where_uuid_equals(row.uuid))
-                else:
-                    # Existing row
-                    op["where"] = _where_uuid_equals(row.uuid)
-                op["mutations"] = []
-                if '_removes' in row._mutations.keys():
-                    for col, dat in six.iteritems(row._mutations['_removes']):
-                        column = row._table.columns[col]
-                        if column.type.is_map():
-                            opdat = ["set"]
-                            opdat.append(list(dat))
-                        else:
-                            opdat = ["set"]
-                            inner_opdat = []
-                            for ele in dat:
-                                try:
-                                    datum = data.Datum.from_python(column.type,
-                                        ele, _row_to_uuid)
-                                except error.Error:
-                                    return
-                                inner_opdat.append(
-                                    self._substitute_uuids(datum.to_json()))
-                            opdat.append(inner_opdat)
-                        mutation = [col, "delete", opdat]
-                        op["mutations"].append(mutation)
-                        addop = True
-                if '_inserts' in row._mutations.keys():
-                    for col, val in six.iteritems(row._mutations['_inserts']):
-                        column = row._table.columns[col]
-                        if column.type.is_map():
-                            opdat = ["map"]
-                            datum = data.Datum.from_python(column.type, val,
-                                                           _row_to_uuid)
-                            opdat.append(datum.as_list())
-                        else:
-                            opdat = ["set"]
-                            inner_opdat = []
-                            for ele in val:
-                                try:
-                                    datum = data.Datum.from_python(column.type,
-                                        ele, _row_to_uuid)
-                                except error.Error:
-                                    return
-                                inner_opdat.append(
-                                    self._substitute_uuids(datum.to_json()))
-                            opdat.append(inner_opdat)
-                        mutation = [col, "insert", opdat]
-                        op["mutations"].append(mutation)
-                        addop = True
-                if addop:
-                    operations.append(op)
-                    any_updates = True
-
-        if self._fetch_requests:
-            for fetch in self._fetch_requests:
-                fetch["index"] = len(operations) - 1
-                operations.append({"op": "select",
-                                   "table": fetch["row"]._table.name,
-                                   "where": self._substitute_uuids(
-                                       _where_uuid_equals(fetch["row"].uuid)),
-                                   "columns": [fetch["column_name"]]})
-            any_updates = True
-
-        # Add increment.
-        if self._inc_row and any_updates:
-            self._inc_index = len(operations) - 1
-
-            operations.append({"op": "mutate",
-                               "table": self._inc_row._table.name,
-                               "where": self._substitute_uuids(
-                                   _where_uuid_equals(self._inc_row.uuid)),
-                               "mutations": [[self._inc_column, "+=", 1]]})
-            operations.append({"op": "select",
-                               "table": self._inc_row._table.name,
-                               "where": self._substitute_uuids(
-                                   _where_uuid_equals(self._inc_row.uuid)),
-                               "columns": [self._inc_column]})
-
-        # Add comment.
-        if self._comments:
-            operations.append({"op": "comment",
-                               "comment": "\n".join(self._comments)})
-
-        # Dry run?
-        if self.dry_run:
-            operations.append({"op": "abort"})
-
-        if not any_updates:
-            self._status = Transaction.UNCHANGED
-        else:
-            msg = ovs.jsonrpc.Message.create_request("transact", operations)
-            self._request_id = msg.id
-            if not self.idl._session.send(msg):
-                self.idl._outstanding_txns[self._request_id] = self
-                self._status = Transaction.INCOMPLETE
-            else:
-                self._status = Transaction.TRY_AGAIN
-
-        self.__disassemble()
-        return self._status
-
-    def commit_block(self):
-        """Attempts to commit this transaction, blocking until the commit
-        either succeeds or fails.  Returns the final commit status, which may
-        be any Transaction.* value other than Transaction.INCOMPLETE.
-
-        This function calls Idl.run() on this transaction'ss IDL, so it may
-        cause Idl.change_seqno to change."""
-        while True:
-            status = self.commit()
-            if status != Transaction.INCOMPLETE:
-                return status
-
-            self.idl.run()
-
-            poller = ovs.poller.Poller()
-            self.idl.wait(poller)
-            self.wait(poller)
-            poller.block()
-
-    def get_increment_new_value(self):
-        """Returns the final (incremented) value of the column in this
-        transaction that was set to be incremented by Row.increment.  This
-        transaction must have committed successfully."""
-        assert self._status == Transaction.SUCCESS
-        return self._inc_new_value
-
-    def abort(self):
-        """Aborts this transaction.  If Transaction.commit() has already been
-        called then the transaction might get committed anyhow."""
-        self.__disassemble()
-        if self._status in (Transaction.UNCOMMITTED,
-                            Transaction.INCOMPLETE):
-            self._status = Transaction.ABORTED
-
-    def get_error(self):
-        """Returns a string representing this transaction's current status,
-        suitable for use in log messages."""
-        if self._status != Transaction.ERROR:
-            return Transaction.status_to_string(self._status)
-        elif self._error:
-            return self._error
-        else:
-            return "no error details available"
-
-    def __set_error_json(self, json):
-        if self._error is None:
-            self._error = ovs.json.to_string(json)
-
-    def get_insert_uuid(self, uuid):
-        """Finds and returns the permanent UUID that the database assigned to a
-        newly inserted row, given the UUID that Transaction.insert() assigned
-        locally to that row.
-
-        Returns None if 'uuid' is not a UUID assigned by Transaction.insert()
-        or if it was assigned by that function and then deleted by Row.delete()
-        within the same transaction.  (Rows that are inserted and then deleted
-        within a single transaction are never sent to the database server, so
-        it never assigns them a permanent UUID.)
-
-        This transaction must have completed successfully."""
-        assert self._status in (Transaction.SUCCESS,
-                                Transaction.UNCHANGED)
-        inserted_row = self._inserted_rows.get(uuid)
-        if inserted_row:
-            return inserted_row.real
-        return None
-
-    def _increment(self, row, column):
-        assert not self._inc_row
-        self._inc_row = row
-        self._inc_column = column
-
-    def _fetch(self, row, column_name):
-        self._fetch_requests.append({"row": row, "column_name": column_name})
-
-    def _write(self, row, column, datum):
-        assert row._changes is not None
-        assert row._mutations is not None
-
-        txn = row._idl.txn
-
-        # If this is a write-only column and the datum being written is the
-        # same as the one already there, just skip the update entirely.  This
-        # is worth optimizing because we have a lot of columns that get
-        # periodically refreshed into the database but don't actually change
-        # that often.
-        #
-        # We don't do this for read/write columns because that would break
-        # atomicity of transactions--some other client might have written a
-        # different value in that column since we read it.  (But if a whole
-        # transaction only does writes of existing values, without making any
-        # real changes, we will drop the whole transaction later in
-        # ovsdb_idl_txn_commit().)
-        if (not column.alert and row._data and
-                row._data.get(column.name) == datum):
-            new_value = row._changes.get(column.name)
-            if new_value is None or new_value == datum:
-                return
-
-        txn._txn_rows[row.uuid] = row
-        if '_inserts' in row._mutations:
-            row._mutations['_inserts'].pop(column.name, None)
-        if '_removes' in row._mutations:
-            row._mutations['_removes'].pop(column.name, None)
-        row._changes[column.name] = datum.copy()
-
-    def insert(self, table, new_uuid=None):
-        """Inserts and returns a new row in 'table', which must be one of the
-        ovs.db.schema.TableSchema objects in the Idl's 'tables' dict.
-
-        The new row is assigned a provisional UUID.  If 'uuid' is None then one
-        is randomly generated; otherwise 'uuid' should specify a randomly
-        generated uuid.UUID not otherwise in use.  ovsdb-server will assign a
-        different UUID when 'txn' is committed, but the IDL will replace any
-        uses of the provisional UUID in the data to be to be committed by the
-        UUID assigned by ovsdb-server."""
-        assert self._status == Transaction.UNCOMMITTED
-        if new_uuid is None:
-            new_uuid = uuid.uuid4()
-        row = Row(self.idl, table, new_uuid, None)
-        table.rows[row.uuid] = row
-        self._txn_rows[row.uuid] = row
-        return row
-
-    def _process_reply(self, msg):
-        if msg.type == ovs.jsonrpc.Message.T_ERROR:
-            self._status = Transaction.ERROR
-        elif not isinstance(msg.result, (list, tuple)):
-            # XXX rate-limit
-            vlog.warn('reply to "transact" is not JSON array')
-        else:
-            hard_errors = False
-            soft_errors = False
-            lock_errors = False
-
-            ops = msg.result
-            for op in ops:
-                if op is None:
-                    # This isn't an error in itself but indicates that some
-                    # prior operation failed, so make sure that we know about
-                    # it.
-                    soft_errors = True
-                elif isinstance(op, dict):
-                    error = op.get("error")
-                    if error is not None:
-                        if error == "timed out":
-                            soft_errors = True
-                        elif error == "not owner":
-                            lock_errors = True
-                        elif error == "aborted":
-                            pass
-                        else:
-                            hard_errors = True
-                            self.__set_error_json(op)
-                else:
-                    hard_errors = True
-                    self.__set_error_json(op)
-                    # XXX rate-limit
-                    vlog.warn("operation reply is not JSON null or object")
-
-            if not soft_errors and not hard_errors and not lock_errors:
-                if self._inc_row and not self.__process_inc_reply(ops):
-                    hard_errors = True
-                if self._fetch_requests:
-                    if self.__process_fetch_reply(ops):
-                        self.idl.change_seqno += 1
-                    else:
-                        hard_errors = True
-
-                for insert in six.itervalues(self._inserted_rows):
-                    if not self.__process_insert_reply(insert, ops):
-                        hard_errors = True
-
-            if hard_errors:
-                self._status = Transaction.ERROR
-            elif lock_errors:
-                self._status = Transaction.NOT_LOCKED
-            elif soft_errors:
-                self._status = Transaction.TRY_AGAIN
-            else:
-                self._status = Transaction.SUCCESS
-
-    @staticmethod
-    def __check_json_type(json, types, name):
-        if not json:
-            # XXX rate-limit
-            vlog.warn("%s is missing" % name)
-            return False
-        elif not isinstance(json, tuple(types)):
-            # XXX rate-limit
-            vlog.warn("%s has unexpected type %s" % (name, type(json)))
-            return False
-        else:
-            return True
-
-    def __process_fetch_reply(self, ops):
-        update = False
-        for fetch_request in self._fetch_requests:
-            row = fetch_request["row"]
-            column_name = fetch_request["column_name"]
-            index = fetch_request["index"]
-            table = row._table
-
-            select = ops[index]
-            fetched_rows = select.get("rows")
-            if not Transaction.__check_json_type(fetched_rows, (list, tuple),
-                                                 '"select" reply "rows"'):
-                return False
-            if len(fetched_rows) != 1:
-                # XXX rate-limit
-                vlog.warn('"select" reply "rows" has %d elements '
-                          'instead of 1' % len(fetched_rows))
-                continue
-            fetched_row = fetched_rows[0]
-            if not Transaction.__check_json_type(fetched_row, (dict,),
-                                                 '"select" reply row'):
-                continue
-
-            column = table.columns.get(column_name)
-            datum_json = fetched_row.get(column_name)
-            datum = data.Datum.from_json(column.type, datum_json)
-
-            row._data[column_name] = datum
-            update = True
-
-        return update
-
-    def __process_inc_reply(self, ops):
-        if self._inc_index + 2 > len(ops):
-            # XXX rate-limit
-            vlog.warn("reply does not contain enough operations for "
-                      "increment (has %d, needs %d)" %
-                      (len(ops), self._inc_index + 2))
-
-        # We know that this is a JSON object because the loop in
-        # __process_reply() already checked.
-        mutate = ops[self._inc_index]
-        count = mutate.get("count")
-        if not Transaction.__check_json_type(count, six.integer_types,
-                                             '"mutate" reply "count"'):
-            return False
-        if count != 1:
-            # XXX rate-limit
-            vlog.warn('"mutate" reply "count" is %d instead of 1' % count)
-            return False
-
-        select = ops[self._inc_index + 1]
-        rows = select.get("rows")
-        if not Transaction.__check_json_type(rows, (list, tuple),
-                                             '"select" reply "rows"'):
-            return False
-        if len(rows) != 1:
-            # XXX rate-limit
-            vlog.warn('"select" reply "rows" has %d elements '
-                      'instead of 1' % len(rows))
-            return False
-        row = rows[0]
-        if not Transaction.__check_json_type(row, (dict,),
-                                             '"select" reply row'):
-            return False
-        column = row.get(self._inc_column)
-        if not Transaction.__check_json_type(column, six.integer_types,
-                                             '"select" reply inc column'):
-            return False
-        self._inc_new_value = column
-        return True
-
-    def __process_insert_reply(self, insert, ops):
-        if insert.op_index >= len(ops):
-            # XXX rate-limit
-            vlog.warn("reply does not contain enough operations "
-                      "for insert (has %d, needs %d)"
-                      % (len(ops), insert.op_index))
-            return False
-
-        # We know that this is a JSON object because the loop in
-        # __process_reply() already checked.
-        reply = ops[insert.op_index]
-        json_uuid = reply.get("uuid")
-        if not Transaction.__check_json_type(json_uuid, (tuple, list),
-                                             '"insert" reply "uuid"'):
-            return False
-
-        try:
-            uuid_ = ovs.ovsuuid.from_json(json_uuid)
-        except error.Error:
-            # XXX rate-limit
-            vlog.warn('"insert" reply "uuid" is not a JSON UUID')
-            return False
-
-        insert.real = uuid_
-        return True
-
-
-class SchemaHelper(object):
-    """IDL Schema helper.
-
-    This class encapsulates the logic required to generate schemas suitable
-    for creating 'ovs.db.idl.Idl' objects.  Clients should register columns
-    they are interested in using register_columns().  When finished, the
-    get_idl_schema() function may be called.
-
-    The location on disk of the schema used may be found in the
-    'schema_location' variable."""
-
-    def __init__(self, location=None, schema_json=None):
-        """Creates a new Schema object.
-
-        'location' file path to ovs schema. None means default location
-        'schema_json' schema in json preresentation in memory
-        """
-
-        if location and schema_json:
-            raise ValueError("both location and schema_json can't be "
-                             "specified. it's ambiguous.")
-        if schema_json is None:
-            if location is None:
-                location = "%s/vswitch.ovsschema" % ovs.dirs.PKGDATADIR
-            schema_json = ovs.json.from_file(location)
-
-        self.schema_json = schema_json
-        self._tables = {}
-        self._readonly = {}
-        self._all = False
-
-    def register_columns(self, table, columns, readonly=[]):
-        """Registers interest in the given 'columns' of 'table'.  Future calls
-        to get_idl_schema() will include 'table':column for each column in
-        'columns'. This function automatically avoids adding duplicate entries
-        to the schema.
-        A subset of 'columns' can be specified as 'readonly'. The readonly
-        columns are not replicated but can be fetched on-demand by the user
-        with Row.fetch().
-
-        'table' must be a string.
-        'columns' must be a list of strings.
-        'readonly' must be a list of strings.
-        """
-
-        assert isinstance(table, six.string_types)
-        assert isinstance(columns, list)
-
-        columns = set(columns) | self._tables.get(table, set())
-        self._tables[table] = columns
-        self._readonly[table] = readonly
-
-    def register_table(self, table):
-        """Registers interest in the given all columns of 'table'. Future calls
-        to get_idl_schema() will include all columns of 'table'.
-
-        'table' must be a string
-        """
-        assert isinstance(table, six.string_types)
-        self._tables[table] = set()  # empty set means all columns in the table
-
-    def register_all(self):
-        """Registers interest in every column of every table."""
-        self._all = True
-
-    def get_idl_schema(self):
-        """Gets a schema appropriate for the creation of an 'ovs.db.id.IDL'
-        object based on columns registered using the register_columns()
-        function."""
-
-        schema = ovs.db.schema.DbSchema.from_json(self.schema_json)
-        self.schema_json = None
-
-        if not self._all:
-            schema_tables = {}
-            for table, columns in six.iteritems(self._tables):
-                schema_tables[table] = (
-                    self._keep_table_columns(schema, table, columns))
-
-            schema.tables = schema_tables
-        schema.readonly = self._readonly
-        return schema
-
-    def _keep_table_columns(self, schema, table_name, columns):
-        assert table_name in schema.tables
-        table = schema.tables[table_name]
-
-        if not columns:
-            # empty set means all columns in the table
-            return table
-
-        new_columns = {}
-        for column_name in columns:
-            assert isinstance(column_name, six.string_types)
-            assert column_name in table.columns
-
-            new_columns[column_name] = table.columns[column_name]
-
-        table.columns = new_columns
-        return table
diff --git a/python/ovs/db/parser.py b/python/ovs/db/parser.py
deleted file mode 100644
index b39de39ff..000000000
--- a/python/ovs/db/parser.py
+++ /dev/null
@@ -1,118 +0,0 @@ 
-# Copyright (c) 2010, 2011 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import re
-
-from ovs.db import error
-
-import six
-
-
-class Parser(object):
-    def __init__(self, json, name):
-        self.name = name
-        self.json = json
-        if not isinstance(json, dict):
-            self.__raise_error("Object expected.")
-        self.used = set()
-
-    def __get(self, name, types, optional, default=None):
-        if name in self.json:
-            self.used.add(name)
-            member = float_to_int(self.json[name])
-            if is_identifier(member) and "id" in types:
-                return member
-            try:
-                if len(types) and not isinstance(member, tuple(types)):
-                    self.__raise_error("Type mismatch for member '%s'." % name)
-            except TypeError:
-                self.__raise_error("Type mismatch for member '%s'." % name)
-            return member
-        else:
-            if not optional:
-                self.__raise_error("Required '%s' member is missing." % name)
-            return default
-
-    def get(self, name, types):
-        return self.__get(name, types, False)
-
-    def get_optional(self, name, types, default=None):
-        return self.__get(name, types, True, default)
-
-    def __raise_error(self, message):
-        raise error.Error("Parsing %s failed: %s" % (self.name, message),
-                          self.json)
-
-    def finish(self):
-        missing = set(self.json) - set(self.used)
-        if missing:
-            name = missing.pop()
-            if len(missing) > 1:
-                present = "and %d other members are" % len(missing)
-            elif missing:
-                present = "and 1 other member are"
-            else:
-                present = "is"
-            self.__raise_error("Member '%s' %s present but not allowed here" %
-                               (name, present))
-
-
-def float_to_int(x):
-    # XXX still needed?
-    if isinstance(x, float):
-        integer = int(x)
-        if integer == x and -2 ** 53 <= integer < 2 ** 53:
-            return integer
-    return x
-
-
-id_re = re.compile("[_a-zA-Z][_a-zA-Z0-9]*$")
-
-
-def is_identifier(s):
-    return isinstance(s, six.string_types) and id_re.match(s)
-
-
-def json_type_to_string(type_):
-    number_types = list(six.integer_types)
-    number_types.extend([float])
-    number_types = tuple(number_types)
-    if type_ is None:
-        return "null"
-    elif issubclass(type_, bool):
-        return "boolean"
-    elif issubclass(type_, dict):
-        return "object"
-    elif issubclass(type_, list):
-        return "array"
-    elif issubclass(type_, number_types):
-        return "number"
-    elif issubclass(type_, six.string_types):
-        return "string"
-    else:
-        return "<invalid>"
-
-
-def unwrap_json(json, name, types, desc):
-    if (not isinstance(json, (list, tuple))
-            or len(json) != 2 or json[0] != name
-            or not isinstance(json[1], tuple(types))):
-        raise error.Error('expected ["%s", <%s>]' % (name, desc), json)
-    return json[1]
-
-
-def parse_json_pair(json):
-    if not isinstance(json, list) or len(json) != 2:
-        raise error.Error("expected 2-element array", json)
-    return json
diff --git a/python/ovs/db/schema.py b/python/ovs/db/schema.py
deleted file mode 100644
index 44b030757..000000000
--- a/python/ovs/db/schema.py
+++ /dev/null
@@ -1,304 +0,0 @@ 
-# Copyright (c) 2009, 2010, 2011, 2016 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import re
-import sys
-
-import ovs.db.parser
-import ovs.db.types
-from ovs.db import error
-
-import six
-
-
-def _check_id(name, json):
-    if name.startswith('_'):
-        raise error.Error('names beginning with "_" are reserved', json)
-    elif not ovs.db.parser.is_identifier(name):
-        raise error.Error("name must be a valid id", json)
-
-
-class DbSchema(object):
-    """Schema for an OVSDB database."""
-
-    def __init__(self, name, version, tables, allow_extensions=False):
-        self.name = name
-        self.version = version
-        self.tables = tables
-
-        # "isRoot" was not part of the original schema definition.  Before it
-        # was added, there was no support for garbage collection.  So, for
-        # backward compatibility, if the root set is empty then assume that
-        # every table is in the root set.
-        if self.__root_set_size() == 0:
-            for table in six.itervalues(self.tables):
-                table.is_root = True
-
-        # Find the "ref_table"s referenced by "ref_table_name"s.
-        #
-        # Also force certain columns to be persistent, as explained in
-        # __check_ref_table().  This requires 'is_root' to be known, so this
-        # must follow the loop updating 'is_root' above.
-        for table in six.itervalues(self.tables):
-            for column in six.itervalues(table.columns):
-                self.__follow_ref_table(column, column.type.key, "key")
-                self.__follow_ref_table(column, column.type.value, "value")
-
-    def __root_set_size(self):
-        """Returns the number of tables in the schema's root set."""
-        n_root = 0
-        for table in six.itervalues(self.tables):
-            if table.is_root:
-                n_root += 1
-        return n_root
-
-    @staticmethod
-    def from_json(json, allow_extensions=False):
-        parser = ovs.db.parser.Parser(json, "database schema")
-        name = parser.get("name", ['id'])
-        version = parser.get_optional("version", six.string_types)
-        parser.get_optional("cksum", six.string_types)
-        tablesJson = parser.get("tables", [dict])
-        parser.finish()
-
-        if (version is not None and
-            not re.match(r'[0-9]+\.[0-9]+\.[0-9]+$', version)):
-            raise error.Error('schema version "%s" not in format x.y.z'
-                              % version)
-
-        tables = {}
-        for tableName, tableJson in six.iteritems(tablesJson):
-            _check_id(tableName, json)
-            tables[tableName] = TableSchema.from_json(tableJson, tableName,
-                                                      allow_extensions)
-
-        return DbSchema(name, version, tables)
-
-    def to_json(self):
-        # "isRoot" was not part of the original schema definition.  Before it
-        # was added, there was no support for garbage collection.  So, for
-        # backward compatibility, if every table is in the root set then do not
-        # output "isRoot" in table schemas.
-        default_is_root = self.__root_set_size() == len(self.tables)
-
-        tables = {}
-        for table in six.itervalues(self.tables):
-            tables[table.name] = table.to_json(default_is_root)
-        json = {"name": self.name, "tables": tables}
-        if self.version:
-            json["version"] = self.version
-        return json
-
-    def copy(self):
-        return DbSchema.from_json(self.to_json())
-
-    def __follow_ref_table(self, column, base, base_name):
-        if (not base or base.type != ovs.db.types.UuidType
-                or not base.ref_table_name):
-            return
-
-        base.ref_table = self.tables.get(base.ref_table_name)
-        if not base.ref_table:
-            raise error.Error("column %s %s refers to undefined table %s"
-                              % (column.name, base_name, base.ref_table_name),
-                              tag="syntax error")
-
-        if base.is_strong_ref() and not base.ref_table.is_root:
-            # We cannot allow a strong reference to a non-root table to be
-            # ephemeral: if it is the only reference to a row, then replaying
-            # the database log from disk will cause the referenced row to be
-            # deleted, even though it did exist in memory.  If there are
-            # references to that row later in the log (to modify it, to delete
-            # it, or just to point to it), then this will yield a transaction
-            # error.
-            column.persistent = True
-
-
-class IdlSchema(DbSchema):
-    def __init__(self, name, version, tables, idlPrefix, idlHeader,
-                 cDecls, hDecls):
-        DbSchema.__init__(self, name, version, tables)
-        self.idlPrefix = idlPrefix
-        self.idlHeader = idlHeader
-        self.cDecls = cDecls
-        self.hDecls = hDecls
-
-    @staticmethod
-    def from_json(json):
-        parser = ovs.db.parser.Parser(json, "IDL schema")
-        idlPrefix = parser.get("idlPrefix", six.string_types)
-        idlHeader = parser.get("idlHeader", six.string_types)
-        cDecls = parser.get_optional("cDecls", six.string_types, "")
-        hDecls = parser.get_optional("hDecls", six.string_types, "")
-
-        subjson = dict(json)
-        del subjson["idlPrefix"]
-        del subjson["idlHeader"]
-        subjson.pop("cDecls", None)
-        subjson.pop("hDecls", None)
-        schema = DbSchema.from_json(subjson, allow_extensions=True)
-
-        return IdlSchema(schema.name, schema.version, schema.tables,
-                         idlPrefix, idlHeader, cDecls, hDecls)
-
-
-def column_set_from_json(json, columns):
-    if json is None:
-        return tuple(columns)
-    elif not isinstance(json, list):
-        raise error.Error("array of distinct column names expected", json)
-    else:
-        for column_name in json:
-            if not isinstance(column_name, six.string_types):
-                raise error.Error("array of distinct column names expected",
-                                  json)
-            elif column_name not in columns:
-                raise error.Error("%s is not a valid column name"
-                                  % column_name, json)
-        if len(set(json)) != len(json):
-            # Duplicate.
-            raise error.Error("array of distinct column names expected", json)
-        return tuple([columns[column_name] for column_name in json])
-
-
-class TableSchema(object):
-    def __init__(self, name, columns, mutable=True, max_rows=sys.maxsize,
-                 is_root=True, indexes=[], extensions={}):
-        self.name = name
-        self.columns = columns
-        self.mutable = mutable
-        self.max_rows = max_rows
-        self.is_root = is_root
-        self.indexes = indexes
-        self.extensions = extensions
-
-    @staticmethod
-    def from_json(json, name, allow_extensions=False):
-        parser = ovs.db.parser.Parser(json, "table schema for table %s" % name)
-        columns_json = parser.get("columns", [dict])
-        mutable = parser.get_optional("mutable", [bool], True)
-        max_rows = parser.get_optional("maxRows", [int])
-        is_root = parser.get_optional("isRoot", [bool], False)
-        indexes_json = parser.get_optional("indexes", [list], [])
-        if allow_extensions:
-            extensions = parser.get_optional("extensions", [dict], {})
-        else:
-            extensions = {}
-        parser.finish()
-
-        if max_rows is None:
-            max_rows = sys.maxsize
-        elif max_rows <= 0:
-            raise error.Error("maxRows must be at least 1", json)
-
-        if not columns_json:
-            raise error.Error("table must have at least one column", json)
-
-        columns = {}
-        for column_name, column_json in six.iteritems(columns_json):
-            _check_id(column_name, json)
-            columns[column_name] = ColumnSchema.from_json(column_json,
-                                                          column_name,
-                                                          allow_extensions)
-
-        indexes = []
-        for index_json in indexes_json:
-            index = column_set_from_json(index_json, columns)
-            if not index:
-                raise error.Error("index must have at least one column", json)
-            elif len(index) == 1:
-                index[0].unique = True
-            for column in index:
-                if not column.persistent:
-                    raise error.Error("ephemeral columns (such as %s) may "
-                                      "not be indexed" % column.name, json)
-            indexes.append(index)
-
-        return TableSchema(name, columns, mutable, max_rows, is_root, indexes,
-                           extensions)
-
-    def to_json(self, default_is_root=False):
-        """Returns this table schema serialized into JSON.
-
-        The "isRoot" member is included in the JSON only if its value would
-        differ from 'default_is_root'.  Ordinarily 'default_is_root' should be
-        false, because ordinarily a table would be not be part of the root set
-        if its "isRoot" member is omitted.  However, garbage collection was not
-        originally included in OVSDB, so in older schemas that do not include
-        any "isRoot" members, every table is implicitly part of the root set.
-        To serialize such a schema in a way that can be read by older OVSDB
-        tools, specify 'default_is_root' as True.
-        """
-        json = {}
-        if not self.mutable:
-            json["mutable"] = False
-        if default_is_root != self.is_root:
-            json["isRoot"] = self.is_root
-
-        json["columns"] = columns = {}
-        for column in six.itervalues(self.columns):
-            if not column.name.startswith("_"):
-                columns[column.name] = column.to_json()
-
-        if self.max_rows != sys.maxsize:
-            json["maxRows"] = self.max_rows
-
-        if self.indexes:
-            json["indexes"] = []
-            for index in self.indexes:
-                json["indexes"].append([column.name for column in index])
-
-        return json
-
-
-class ColumnSchema(object):
-    def __init__(self, name, mutable, persistent, type_, extensions={}):
-        self.name = name
-        self.mutable = mutable
-        self.persistent = persistent
-        self.type = type_
-        self.unique = False
-        self.extensions = extensions
-
-    @staticmethod
-    def from_json(json, name, allow_extensions=False):
-        parser = ovs.db.parser.Parser(json, "schema for column %s" % name)
-        mutable = parser.get_optional("mutable", [bool], True)
-        ephemeral = parser.get_optional("ephemeral", [bool], False)
-        _types = list(six.string_types)
-        _types.extend([dict])
-        type_ = ovs.db.types.Type.from_json(parser.get("type", _types))
-        if allow_extensions:
-            extensions = parser.get_optional("extensions", [dict], {})
-        else:
-            extensions = {}
-        parser.finish()
-
-        if not mutable and (type_.key.is_weak_ref()
-                            or (type_.value and type_.value.is_weak_ref())):
-            # We cannot allow a weak reference to be immutable: if referenced
-            # rows are deleted, then the weak reference needs to change.
-            mutable = True
-
-        return ColumnSchema(name, mutable, not ephemeral, type_, extensions)
-
-    def to_json(self):
-        json = {"type": self.type.to_json()}
-        if not self.mutable:
-            json["mutable"] = False
-        if not self.persistent:
-            json["ephemeral"] = True
-        if self.extensions:
-            json["extensions"] = self.extensions
-        return json
diff --git a/python/ovs/db/types.py b/python/ovs/db/types.py
deleted file mode 100644
index 54f577405..000000000
--- a/python/ovs/db/types.py
+++ /dev/null
@@ -1,647 +0,0 @@ 
-# Copyright (c) 2009, 2010, 2011, 2012, 2013, 2016 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import sys
-import uuid
-
-import ovs.db.data
-import ovs.db.parser
-import ovs.ovsuuid
-from ovs.db import error
-
-import six
-
-
-class AtomicType(object):
-    def __init__(self, name, default, python_types):
-        self.name = name
-        self.default = default
-        self.python_types = python_types
-
-    @staticmethod
-    def from_string(s):
-        if s != "void":
-            for atomic_type in ATOMIC_TYPES:
-                if s == atomic_type.name:
-                    return atomic_type
-        raise error.Error('"%s" is not an atomic-type' % s, s)
-
-    @staticmethod
-    def from_json(json):
-        if not isinstance(json, six.string_types):
-            raise error.Error("atomic-type expected", json)
-        else:
-            return AtomicType.from_string(json)
-
-    def __str__(self):
-        return self.name
-
-    def to_string(self):
-        return self.name
-
-    def to_json(self):
-        return self.name
-
-    def default_atom(self):
-        return ovs.db.data.Atom(self, self.default)
-
-
-REAL_PYTHON_TYPES = list(six.integer_types)
-REAL_PYTHON_TYPES.extend([float])
-REAL_PYTHON_TYPES = tuple(REAL_PYTHON_TYPES)
-
-VoidType = AtomicType("void", None, ())
-IntegerType = AtomicType("integer", 0, six.integer_types)
-RealType = AtomicType("real", 0.0, REAL_PYTHON_TYPES)
-BooleanType = AtomicType("boolean", False, (bool,))
-StringType = AtomicType("string", "", six.string_types)
-UuidType = AtomicType("uuid", ovs.ovsuuid.zero(), (uuid.UUID,))
-
-ATOMIC_TYPES = [VoidType, IntegerType, RealType, BooleanType, StringType,
-                UuidType]
-
-
-def escapeCString(src):
-    dst = ""
-    for c in src:
-        if c in "\\\"":
-            dst += "\\" + c
-        elif ord(c) < 32:
-            if c == '\n':
-                dst += '\\n'
-            elif c == '\r':
-                dst += '\\r'
-            elif c == '\a':
-                dst += '\\a'
-            elif c == '\b':
-                dst += '\\b'
-            elif c == '\f':
-                dst += '\\f'
-            elif c == '\t':
-                dst += '\\t'
-            elif c == '\v':
-                dst += '\\v'
-            else:
-                dst += '\\%03o' % ord(c)
-        else:
-            dst += c
-    return dst
-
-
-def commafy(x):
-    """Returns integer x formatted in decimal with thousands set off by
-    commas."""
-    return _commafy("%d" % x)
-
-
-def _commafy(s):
-    if s.startswith('-'):
-        return '-' + _commafy(s[1:])
-    elif len(s) <= 3:
-        return s
-    else:
-        return _commafy(s[:-3]) + ',' + _commafy(s[-3:])
-
-
-def returnUnchanged(x):
-    return x
-
-
-class BaseType(object):
-    def __init__(self, type_, enum=None, min=None, max=None,
-                 min_length=0, max_length=sys.maxsize, ref_table_name=None):
-        assert isinstance(type_, AtomicType)
-        self.type = type_
-        self.enum = enum
-        self.min = min
-        self.max = max
-        self.min_length = min_length
-        self.max_length = max_length
-        self.ref_table_name = ref_table_name
-        if ref_table_name:
-            self.ref_type = 'strong'
-        else:
-            self.ref_type = None
-        self.ref_table = None
-
-    def default(self):
-        return ovs.db.data.Atom.default(self.type)
-
-    def __eq__(self, other):
-        if not isinstance(other, BaseType):
-            return NotImplemented
-        return (self.type == other.type and self.enum == other.enum and
-                self.min == other.min and self.max == other.max and
-                self.min_length == other.min_length and
-                self.max_length == other.max_length and
-                self.ref_table_name == other.ref_table_name)
-
-    def __ne__(self, other):
-        if not isinstance(other, BaseType):
-            return NotImplemented
-        else:
-            return not (self == other)
-
-    @staticmethod
-    def __parse_uint(parser, name, default):
-        value = parser.get_optional(name, six.integer_types)
-        if value is None:
-            value = default
-        else:
-            max_value = 2 ** 32 - 1
-            if not (0 <= value <= max_value):
-                raise error.Error("%s out of valid range 0 to %d"
-                                  % (name, max_value), value)
-        return value
-
-    @staticmethod
-    def from_json(json):
-        if isinstance(json, six.string_types):
-            return BaseType(AtomicType.from_json(json))
-
-        parser = ovs.db.parser.Parser(json, "ovsdb type")
-        atomic_type = AtomicType.from_json(parser.get("type",
-                                                      six.string_types))
-
-        base = BaseType(atomic_type)
-
-        enum = parser.get_optional("enum", [])
-        if enum is not None:
-            base.enum = ovs.db.data.Datum.from_json(
-                    BaseType.get_enum_type(base.type), enum)
-        elif base.type == IntegerType:
-            base.min = parser.get_optional("minInteger", six.integer_types)
-            base.max = parser.get_optional("maxInteger", six.integer_types)
-            if (base.min is not None and base.max is not None
-                    and base.min > base.max):
-                raise error.Error("minInteger exceeds maxInteger", json)
-        elif base.type == RealType:
-            base.min = parser.get_optional("minReal", REAL_PYTHON_TYPES)
-            base.max = parser.get_optional("maxReal", REAL_PYTHON_TYPES)
-            if (base.min is not None and base.max is not None
-                    and base.min > base.max):
-                raise error.Error("minReal exceeds maxReal", json)
-        elif base.type == StringType:
-            base.min_length = BaseType.__parse_uint(parser, "minLength", 0)
-            base.max_length = BaseType.__parse_uint(parser, "maxLength",
-                                                    sys.maxsize)
-            if base.min_length > base.max_length:
-                raise error.Error("minLength exceeds maxLength", json)
-        elif base.type == UuidType:
-            base.ref_table_name = parser.get_optional("refTable", ['id'])
-            if base.ref_table_name:
-                base.ref_type = parser.get_optional("refType",
-                                                    six.string_types,
-                                                   "strong")
-                if base.ref_type not in ['strong', 'weak']:
-                    raise error.Error('refType must be "strong" or "weak" '
-                                      '(not "%s")' % base.ref_type)
-        parser.finish()
-
-        return base
-
-    def to_json(self):
-        if not self.has_constraints():
-            return self.type.to_json()
-
-        json = {'type': self.type.to_json()}
-
-        if self.enum:
-            json['enum'] = self.enum.to_json()
-
-        if self.type == IntegerType:
-            if self.min is not None:
-                json['minInteger'] = self.min
-            if self.max is not None:
-                json['maxInteger'] = self.max
-        elif self.type == RealType:
-            if self.min is not None:
-                json['minReal'] = self.min
-            if self.max is not None:
-                json['maxReal'] = self.max
-        elif self.type == StringType:
-            if self.min_length != 0:
-                json['minLength'] = self.min_length
-            if self.max_length != sys.maxsize:
-                json['maxLength'] = self.max_length
-        elif self.type == UuidType:
-            if self.ref_table_name:
-                json['refTable'] = self.ref_table_name
-                if self.ref_type != 'strong':
-                    json['refType'] = self.ref_type
-        return json
-
-    def copy(self):
-        base = BaseType(self.type, self.enum.copy(), self.min, self.max,
-                        self.min_length, self.max_length, self.ref_table_name)
-        base.ref_table = self.ref_table
-        return base
-
-    def is_valid(self):
-        if self.type in (VoidType, BooleanType, UuidType):
-            return True
-        elif self.type in (IntegerType, RealType):
-            return self.min is None or self.max is None or self.min <= self.max
-        elif self.type == StringType:
-            return self.min_length <= self.max_length
-        else:
-            return False
-
-    def has_constraints(self):
-        return (self.enum is not None or self.min is not None or
-                self.max is not None or
-                self.min_length != 0 or self.max_length != sys.maxsize or
-                self.ref_table_name is not None)
-
-    def without_constraints(self):
-        return BaseType(self.type)
-
-    @staticmethod
-    def get_enum_type(atomic_type):
-        """Returns the type of the 'enum' member for a BaseType whose
-        'type' is 'atomic_type'."""
-        return Type(BaseType(atomic_type), None, 1, sys.maxsize)
-
-    def is_ref(self):
-        return self.type == UuidType and self.ref_table_name is not None
-
-    def is_strong_ref(self):
-        return self.is_ref() and self.ref_type == 'strong'
-
-    def is_weak_ref(self):
-        return self.is_ref() and self.ref_type == 'weak'
-
-    def toEnglish(self, escapeLiteral=returnUnchanged):
-        if self.type == UuidType and self.ref_table_name:
-            s = escapeLiteral(self.ref_table_name)
-            if self.ref_type == 'weak':
-                s = "weak reference to " + s
-            return s
-        else:
-            return self.type.to_string()
-
-    def constraintsToEnglish(self, escapeLiteral=returnUnchanged,
-                             escapeNumber=returnUnchanged):
-        if self.enum:
-            literals = [value.toEnglish(escapeLiteral)
-                        for value in self.enum.values]
-            literals.sort()
-            if len(literals) == 1:
-                english = 'must be %s' % (literals[0])
-            elif len(literals) == 2:
-                english = 'either %s or %s' % (literals[0], literals[1])
-            else:
-                english = 'one of %s, %s, or %s' % (literals[0],
-                                                    ', '.join(literals[1:-1]),
-                                                    literals[-1])
-        elif self.min is not None and self.max is not None:
-            if self.type == IntegerType:
-                english = 'in range %s to %s' % (
-                    escapeNumber(commafy(self.min)),
-                    escapeNumber(commafy(self.max)))
-            else:
-                english = 'in range %s to %s' % (
-                    escapeNumber("%g" % self.min),
-                    escapeNumber("%g" % self.max))
-        elif self.min is not None:
-            if self.type == IntegerType:
-                english = 'at least %s' % escapeNumber(commafy(self.min))
-            else:
-                english = 'at least %s' % escapeNumber("%g" % self.min)
-        elif self.max is not None:
-            if self.type == IntegerType:
-                english = 'at most %s' % escapeNumber(commafy(self.max))
-            else:
-                english = 'at most %s' % escapeNumber("%g" % self.max)
-        elif self.min_length != 0 and self.max_length != sys.maxsize:
-            if self.min_length == self.max_length:
-                english = ('exactly %s characters long'
-                           % commafy(self.min_length))
-            else:
-                english = ('between %s and %s characters long'
-                        % (commafy(self.min_length),
-                           commafy(self.max_length)))
-        elif self.min_length != 0:
-            return 'at least %s characters long' % commafy(self.min_length)
-        elif self.max_length != sys.maxsize:
-            english = 'at most %s characters long' % commafy(self.max_length)
-        else:
-            english = ''
-
-        return english
-
-    def toCType(self, prefix, refTable=True):
-        if self.ref_table_name:
-            if not refTable:
-                assert self.type == UuidType
-                return 'struct uuid *'
-            return "struct %s%s *" % (prefix, self.ref_table_name.lower())
-        else:
-            return {IntegerType: 'int64_t ',
-                    RealType: 'double ',
-                    UuidType: 'struct uuid ',
-                    BooleanType: 'bool ',
-                    StringType: 'char *'}[self.type]
-
-    def to_const_c_type(self, prefix, refTable=True):
-        nonconst = self.toCType(prefix, refTable)
-
-        # A "const" prefix works OK for the types we use, but it's a little
-        # weird to write "const bool" as, e.g., a function parameter since
-        # there's no real "const"ness there.  So, omit the "const" except
-        # when a pointer is involved.
-        if '*' in nonconst:
-            return 'const ' + nonconst
-        else:
-            return nonconst
-
-    def toAtomicType(self):
-        return "OVSDB_TYPE_%s" % self.type.to_string().upper()
-
-    def copyCValue(self, dst, src, refTable=True):
-        args = {'dst': dst, 'src': src}
-        if self.ref_table_name:
-            if not refTable:
-                return "%(dst)s = *%(src)s;" % args
-            return ("%(dst)s = %(src)s->header_.uuid;") % args
-        elif self.type == StringType:
-            return "%(dst)s = xstrdup(%(src)s);" % args
-        else:
-            return "%(dst)s = %(src)s;" % args
-
-    def assign_c_value_casting_away_const(self, dst, src, refTable=True):
-        args = {'dst': dst, 'src': src}
-        if self.ref_table_name:
-            if not refTable:
-                return "%(dst)s = *%(src)s;" % args
-            return ("%(dst)s = %(src)s->header_.uuid;") % args
-        elif self.type == StringType:
-            return "%(dst)s = CONST_CAST(char *, %(src)s);" % args
-        else:
-            return "%(dst)s = %(src)s;" % args
-
-    def initCDefault(self, var, is_optional):
-        if self.ref_table_name:
-            return "%s = NULL;" % var
-        elif self.type == StringType and not is_optional:
-            return '%s = "";' % var
-        else:
-            pattern = {IntegerType: '%s = 0;',
-                       RealType: '%s = 0.0;',
-                       UuidType: 'uuid_zero(&%s);',
-                       BooleanType: '%s = false;',
-                       StringType: '%s = NULL;'}[self.type]
-            return pattern % var
-
-    def cInitBaseType(self, prefix, prereqs):
-        init = [".type = %s," % self.toAtomicType()]
-        if self.enum:
-            datum_name = "%s_enum" % prefix
-            init += [".enum_ = &%s," % datum_name]
-            prereqs += self.enum.cDeclareDatum(datum_name)
-        if self.type == IntegerType:
-            if self.min is None:
-                low = "INT64_MIN"
-            else:
-                low = "INT64_C(%d)" % self.min
-            if self.max is None:
-                high = "INT64_MAX"
-            else:
-                high = "INT64_C(%d)" % self.max
-            init.append(".integer = { .min = %s, .max = %s }," % (low, high))
-        elif self.type == RealType:
-            if self.min is None:
-                low = "-DBL_MAX"
-            else:
-                low = self.min
-            if self.max is None:
-                high = "DBL_MAX"
-            else:
-                high = self.max
-            init.append(".real = { .min = %s, .max = %s }," % (low, high))
-        elif self.type == StringType:
-            if self.min is None:
-                low = 0
-            else:
-                low = self.min_length
-            if self.max is None:
-                high = "UINT_MAX"
-            else:
-                high = self.max_length
-            init.append(".string = { .minLen = %s, .maxLen = %s }," % (
-                low, high))
-        elif self.type == UuidType:
-            if self.ref_table_name is not None:
-                init.append(".uuid = { .refTableName = \"%s\", "
-                            ".refType = OVSDB_REF_%s }," % (
-                                escapeCString(self.ref_table_name),
-                                self.ref_type.upper()))
-        return init
-
-
-class Type(object):
-    DEFAULT_MIN = 1
-    DEFAULT_MAX = 1
-
-    def __init__(self, key, value=None, n_min=DEFAULT_MIN, n_max=DEFAULT_MAX):
-        self.key = key
-        self.value = value
-        self.n_min = n_min
-        self.n_max = n_max
-
-    def copy(self):
-        if self.value is None:
-            value = None
-        else:
-            value = self.value.copy()
-        return Type(self.key.copy(), value, self.n_min, self.n_max)
-
-    def __eq__(self, other):
-        if not isinstance(other, Type):
-            return NotImplemented
-        return (self.key == other.key and self.value == other.value and
-                self.n_min == other.n_min and self.n_max == other.n_max)
-
-    def __ne__(self, other):
-        if not isinstance(other, Type):
-            return NotImplemented
-        else:
-            return not (self == other)
-
-    def is_valid(self):
-        return (self.key.type != VoidType and self.key.is_valid() and
-                (self.value is None or
-                 (self.value.type != VoidType and self.value.is_valid())) and
-                self.n_min <= 1 <= self.n_max)
-
-    def is_scalar(self):
-        return self.n_min == 1 and self.n_max == 1 and not self.value
-
-    def is_optional(self):
-        return self.n_min == 0 and self.n_max == 1
-
-    def is_composite(self):
-        return self.n_max > 1
-
-    def is_set(self):
-        return self.value is None and (self.n_min != 1 or self.n_max != 1)
-
-    def is_map(self):
-        return self.value is not None
-
-    def is_smap(self):
-        return (self.is_map()
-                and self.key.type == StringType
-                and self.value.type == StringType)
-
-    def is_optional_pointer(self):
-        return (self.is_optional() and not self.value
-                and (self.key.type == StringType or self.key.ref_table_name))
-
-    @staticmethod
-    def __n_from_json(json, default):
-        if json is None:
-            return default
-        elif isinstance(json, int) and 0 <= json <= sys.maxsize:
-            return json
-        else:
-            raise error.Error("bad min or max value", json)
-
-    @staticmethod
-    def from_json(json):
-        if isinstance(json, six.string_types):
-            return Type(BaseType.from_json(json))
-
-        parser = ovs.db.parser.Parser(json, "ovsdb type")
-        _types = list(six.string_types)
-        _types.extend([dict])
-        key_json = parser.get("key", _types)
-        value_json = parser.get_optional("value", _types)
-        min_json = parser.get_optional("min", [int])
-        _types = list(six.string_types)
-        _types.extend([int])
-        max_json = parser.get_optional("max", _types)
-        parser.finish()
-
-        key = BaseType.from_json(key_json)
-        if value_json:
-            value = BaseType.from_json(value_json)
-        else:
-            value = None
-
-        n_min = Type.__n_from_json(min_json, Type.DEFAULT_MIN)
-
-        if max_json == 'unlimited':
-            n_max = sys.maxsize
-        else:
-            n_max = Type.__n_from_json(max_json, Type.DEFAULT_MAX)
-
-        type_ = Type(key, value, n_min, n_max)
-        if not type_.is_valid():
-            raise error.Error("ovsdb type fails constraint checks", json)
-        return type_
-
-    def to_json(self):
-        if self.is_scalar() and not self.key.has_constraints():
-            return self.key.to_json()
-
-        json = {"key": self.key.to_json()}
-        if self.value is not None:
-            json["value"] = self.value.to_json()
-        if self.n_min != Type.DEFAULT_MIN:
-            json["min"] = self.n_min
-        if self.n_max == sys.maxsize:
-            json["max"] = "unlimited"
-        elif self.n_max != Type.DEFAULT_MAX:
-            json["max"] = self.n_max
-        return json
-
-    def toEnglish(self, escapeLiteral=returnUnchanged):
-        keyName = self.key.toEnglish(escapeLiteral)
-        if self.value:
-            valueName = self.value.toEnglish(escapeLiteral)
-
-        if self.is_scalar():
-            return keyName
-        elif self.is_optional():
-            if self.value:
-                return "optional %s-%s pair" % (keyName, valueName)
-            else:
-                return "optional %s" % keyName
-        else:
-            if self.n_max == sys.maxsize:
-                if self.n_min:
-                    quantity = "%s or more " % commafy(self.n_min)
-                else:
-                    quantity = ""
-            elif self.n_min:
-                quantity = "%s to %s " % (commafy(self.n_min),
-                                          commafy(self.n_max))
-            else:
-                quantity = "up to %s " % commafy(self.n_max)
-
-            if self.value:
-                return "map of %s%s-%s pairs" % (quantity, keyName, valueName)
-            else:
-                if keyName.endswith('s'):
-                    plural = keyName + "es"
-                else:
-                    plural = keyName + "s"
-                return "set of %s%s" % (quantity, plural)
-
-    def constraintsToEnglish(self, escapeLiteral=returnUnchanged,
-                             escapeNumber=returnUnchanged):
-        constraints = []
-        keyConstraints = self.key.constraintsToEnglish(escapeLiteral,
-                                                       escapeNumber)
-        if keyConstraints:
-            if self.value:
-                constraints.append('key %s' % keyConstraints)
-            else:
-                constraints.append(keyConstraints)
-
-        if self.value:
-            valueConstraints = self.value.constraintsToEnglish(escapeLiteral,
-                                                               escapeNumber)
-            if valueConstraints:
-                constraints.append('value %s' % valueConstraints)
-
-        return ', '.join(constraints)
-
-    def cDeclComment(self):
-        if self.n_min == 1 and self.n_max == 1 and self.key.type == StringType:
-            return "\t/* Always nonnull. */"
-        else:
-            return ""
-
-    def cInitType(self, prefix, prereqs):
-        init = [".key = {"]
-        init += ["   " + x for x in self.key.cInitBaseType(prefix + "_key",
-                                                           prereqs)]
-        init += ["},"]
-        if self.value:
-            init += [".value = {"]
-            init += ["    " + x
-                     for x in self.value.cInitBaseType(prefix + "_value",
-                                                       prereqs)]
-            init += ["},"]
-        else:
-            init.append(".value = OVSDB_BASE_VOID_INIT,")
-        init.append(".n_min = %s," % self.n_min)
-        if self.n_max == sys.maxsize:
-            n_max = "UINT_MAX"
-        else:
-            n_max = self.n_max
-        init.append(".n_max = %s," % n_max)
-        return init
diff --git a/python/ovs/dirs.py b/python/ovs/dirs.py
deleted file mode 100644
index c67aecbb4..000000000
--- a/python/ovs/dirs.py
+++ /dev/null
@@ -1,31 +0,0 @@ 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# The @variables@ in this file are replaced by default directories for
-# use in python/ovs/dirs.py in the source directory and replaced by the
-# configured directories for use in the installed python/ovs/dirs.py.
-#
-import os
-
-# Note that the use of """ is to aid in dealing with paths with quotes in them.
-PKGDATADIR = os.environ.get("OVS_PKGDATADIR", """/usr/local/share/openvswitch""")
-RUNDIR = os.environ.get("OVS_RUNDIR", """/var/run""")
-LOGDIR = os.environ.get("OVS_LOGDIR", """/usr/local/var/log""")
-BINDIR = os.environ.get("OVS_BINDIR", """/usr/local/bin""")
-
-DBDIR = os.environ.get("OVS_DBDIR")
-if not DBDIR:
-    sysconfdir = os.environ.get("OVS_SYSCONFDIR")
-    if sysconfdir:
-        DBDIR = "%s/openvswitch" % sysconfdir
-    else:
-        DBDIR = """/usr/local/etc/openvswitch"""
diff --git a/python/ovs/dirs.py.template b/python/ovs/dirs.py.template
deleted file mode 100644
index fb31b7475..000000000
--- a/python/ovs/dirs.py.template
+++ /dev/null
@@ -1,31 +0,0 @@ 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# The @variables@ in this file are replaced by default directories for
-# use in python/ovs/dirs.py in the source directory and replaced by the
-# configured directories for use in the installed python/ovs/dirs.py.
-#
-import os
-
-# Note that the use of """ is to aid in dealing with paths with quotes in them.
-PKGDATADIR = os.environ.get("OVS_PKGDATADIR", """@pkgdatadir@""")
-RUNDIR = os.environ.get("OVS_RUNDIR", """@RUNDIR@""")
-LOGDIR = os.environ.get("OVS_LOGDIR", """@LOGDIR@""")
-BINDIR = os.environ.get("OVS_BINDIR", """@bindir@""")
-
-DBDIR = os.environ.get("OVS_DBDIR")
-if not DBDIR:
-    sysconfdir = os.environ.get("OVS_SYSCONFDIR")
-    if sysconfdir:
-        DBDIR = "%s/openvswitch" % sysconfdir
-    else:
-        DBDIR = """@DBDIR@"""
diff --git a/python/ovs/fatal_signal.py b/python/ovs/fatal_signal.py
deleted file mode 100644
index cb2e99e87..000000000
--- a/python/ovs/fatal_signal.py
+++ /dev/null
@@ -1,183 +0,0 @@ 
-# Copyright (c) 2010, 2011 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import atexit
-import os
-import signal
-import sys
-
-import ovs.vlog
-
-_hooks = []
-vlog = ovs.vlog.Vlog("fatal-signal")
-
-
-def add_hook(hook, cancel, run_at_exit):
-    _init()
-    _hooks.append((hook, cancel, run_at_exit))
-
-
-def fork():
-    """Clears all of the fatal signal hooks without executing them.  If any of
-    the hooks passed a 'cancel' function to add_hook(), then those functions
-    will be called, allowing them to free resources, etc.
-
-    Following a fork, one of the resulting processes can call this function to
-    allow it to terminate without calling the hooks registered before calling
-    this function.  New hooks registered after calling this function will take
-    effect normally."""
-    global _hooks
-    for hook, cancel, run_at_exit in _hooks:
-        if cancel:
-            cancel()
-
-    _hooks = []
-
-
-_added_hook = False
-_files = {}
-
-
-def add_file_to_unlink(file):
-    """Registers 'file' to be unlinked when the program terminates via
-    sys.exit() or a fatal signal."""
-    global _added_hook
-    if not _added_hook:
-        _added_hook = True
-        add_hook(_unlink_files, _cancel_files, True)
-    _files[file] = None
-
-
-def add_file_to_close_and_unlink(file, fd=None):
-    """Registers 'file' to be unlinked when the program terminates via
-    sys.exit() or a fatal signal and the 'fd' to be closed. On Windows a file
-    cannot be removed while it is open for writing."""
-    global _added_hook
-    if not _added_hook:
-        _added_hook = True
-        add_hook(_unlink_files, _cancel_files, True)
-    _files[file] = fd
-
-
-def remove_file_to_unlink(file):
-    """Unregisters 'file' from being unlinked when the program terminates via
-    sys.exit() or a fatal signal."""
-    if file in _files:
-        del _files[file]
-
-
-def unlink_file_now(file):
-    """Like fatal_signal_remove_file_to_unlink(), but also unlinks 'file'.
-    Returns 0 if successful, otherwise a positive errno value."""
-    error = _unlink(file)
-    if error:
-        vlog.warn("could not unlink \"%s\" (%s)" % (file, os.strerror(error)))
-    remove_file_to_unlink(file)
-    return error
-
-
-def _unlink_files():
-    for file_ in _files:
-        if sys.platform == "win32" and _files[file_]:
-            _files[file_].close()
-        _unlink(file_)
-
-
-def _cancel_files():
-    global _added_hook
-    global _files
-    _added_hook = False
-    _files = {}
-
-
-def _unlink(file_):
-    try:
-        os.unlink(file_)
-        return 0
-    except OSError as e:
-        return e.errno
-
-
-def _signal_handler(signr, _):
-    _call_hooks(signr)
-
-    # Re-raise the signal with the default handling so that the program
-    # termination status reflects that we were killed by this signal.
-    signal.signal(signr, signal.SIG_DFL)
-    os.kill(os.getpid(), signr)
-
-
-def _atexit_handler():
-    _call_hooks(0)
-
-
-recurse = False
-
-
-def _call_hooks(signr):
-    global recurse
-    if recurse:
-        return
-    recurse = True
-
-    for hook, cancel, run_at_exit in _hooks:
-        if signr != 0 or run_at_exit:
-            hook()
-
-
-_inited = False
-
-
-def _init():
-    global _inited
-    if not _inited:
-        _inited = True
-        if sys.platform == "win32":
-            signals = [signal.SIGTERM, signal.SIGINT]
-        else:
-            signals = [signal.SIGTERM, signal.SIGINT, signal.SIGHUP,
-                       signal.SIGALRM]
-
-        for signr in signals:
-            if signal.getsignal(signr) == signal.SIG_DFL:
-                signal.signal(signr, _signal_handler)
-        atexit.register(_atexit_handler)
-
-
-def signal_alarm(timeout):
-    if not timeout:
-        env_timeout = os.environ.get('OVS_CTL_TIMEOUT')
-        if env_timeout:
-            timeout = int(env_timeout)
-    if not timeout:
-        return
-
-    if sys.platform == "win32":
-        import time
-        import threading
-
-        class Alarm (threading.Thread):
-            def __init__(self, timeout):
-                super(Alarm, self).__init__()
-                self.timeout = timeout
-                self.setDaemon(True)
-
-            def run(self):
-                time.sleep(self.timeout)
-                os._exit(1)
-
-        alarm = Alarm(timeout)
-        alarm.start()
-    else:
-        signal.alarm(timeout)
diff --git a/python/ovs/fcntl_win.py b/python/ovs/fcntl_win.py
deleted file mode 100644
index a0ae970fe..000000000
--- a/python/ovs/fcntl_win.py
+++ /dev/null
@@ -1,46 +0,0 @@ 
-# Copyright (c) 2016 Cloudbase Solutions Srl
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import errno
-
-import msvcrt
-
-import pywintypes
-
-import win32con
-
-import win32file
-
-LOCK_EX = win32con.LOCKFILE_EXCLUSIVE_LOCK
-LOCK_SH = 0  # the default
-LOCK_NB = win32con.LOCKFILE_FAIL_IMMEDIATELY
-LOCK_UN = 0x80000000  # unlock - non-standard
-
-
-def lockf(fd, flags, length=0xFFFF0000, start=0, whence=0):
-    overlapped = pywintypes.OVERLAPPED()
-    hfile = msvcrt.get_osfhandle(fd.fileno())
-    if LOCK_UN & flags:
-        ret = win32file.UnlockFileEx(hfile, 0, start, length, overlapped)
-    else:
-        try:
-            ret = win32file.LockFileEx(hfile, flags, start, length, overlapped)
-        except:
-            raise IOError(errno.EAGAIN, "", "")
-
-    return ret
-
-
-def flock(fd, flags):
-    lockf(fd, flags, 0xFFFF0000, 0, 0)
diff --git a/python/ovs/json.py b/python/ovs/json.py
deleted file mode 100644
index 96a07513d..000000000
--- a/python/ovs/json.py
+++ /dev/null
@@ -1,531 +0,0 @@ 
-# Copyright (c) 2010, 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from __future__ import absolute_import
-
-import functools
-import json
-import re
-import sys
-
-import six
-
-PARSER_C = 'C'
-PARSER_PY = 'PYTHON'
-try:
-    import ovs._json
-    PARSER = PARSER_C
-except ImportError:
-    PARSER = PARSER_PY
-
-__pychecker__ = 'no-stringiter'
-
-SPACES_PER_LEVEL = 2
-_dumper = functools.partial(json.dumps, separators=(",", ":"))
-
-if six.PY2:
-    def dumper(*args, **kwargs):
-        return _dumper(*args, **kwargs).decode('raw-unicode-escape')
-else:
-    dumper = _dumper
-
-
-def to_stream(obj, stream, pretty=False, sort_keys=True):
-    stream.write(dumper(obj, indent=SPACES_PER_LEVEL if pretty else None,
-                        sort_keys=sort_keys))
-
-
-def to_file(obj, name, pretty=False, sort_keys=True):
-    with open(name, "w") as stream:
-        to_stream(obj, stream, pretty, sort_keys)
-
-
-def to_string(obj, pretty=False, sort_keys=True):
-    return dumper(obj, indent=SPACES_PER_LEVEL if pretty else None,
-                  sort_keys=sort_keys)
-
-
-def from_stream(stream):
-    p = Parser(check_trailer=True)
-    while True:
-        buf = stream.read(4096)
-        if buf == "" or p.feed(buf) != len(buf):
-            break
-    return p.finish()
-
-
-def from_file(name):
-    stream = open(name, "r")
-    try:
-        return from_stream(stream)
-    finally:
-        stream.close()
-
-
-def from_string(s):
-    if not isinstance(s, six.text_type):
-        # We assume the input is a string.  We will only hit this case for a
-        # str in Python 2 which is not unicode, so we need to go ahead and
-        # decode it.
-        try:
-            s = six.text_type(s, 'utf-8')
-        except UnicodeDecodeError as e:
-            seq = ' '.join(["0x%2x" % ord(c)
-                           for c in e.object[e.start:e.end] if ord(c) >= 0x80])
-            return "not a valid UTF-8 string: invalid UTF-8 sequence %s" % seq
-    p = Parser(check_trailer=True)
-    p.feed(s)
-    return p.finish()
-
-
-class Parser(object):
-    # Maximum height of parsing stack. #
-    MAX_HEIGHT = 1000
-
-    def __new__(cls, *args, **kwargs):
-        if PARSER == PARSER_C:
-            return ovs._json.Parser(*args, **kwargs)
-        return super(Parser, cls).__new__(cls)
-
-    def __init__(self, check_trailer=False):
-        self.check_trailer = check_trailer
-
-        # Lexical analysis.
-        self.lex_state = Parser.__lex_start
-        self.buffer = ""
-        self.line_number = 0
-        self.column_number = 0
-        self.byte_number = 0
-
-        # Parsing.
-        self.parse_state = Parser.__parse_start
-        self.stack = []
-        self.member_name = None
-
-        # Parse status.
-        self.done = False
-        self.error = None
-
-    def __lex_start_space(self, c):
-        pass
-
-    def __lex_start_alpha(self, c):
-        self.buffer = c
-        self.lex_state = Parser.__lex_keyword
-
-    def __lex_start_token(self, c):
-        self.__parser_input(c)
-
-    def __lex_start_number(self, c):
-        self.buffer = c
-        self.lex_state = Parser.__lex_number
-
-    def __lex_start_string(self, _):
-        self.lex_state = Parser.__lex_string
-
-    def __lex_start_error(self, c):
-        if ord(c) >= 32 and ord(c) < 128:
-            self.__error("invalid character '%s'" % c)
-        else:
-            self.__error("invalid character U+%04x" % ord(c))
-
-    __lex_start_actions = {}
-    for c in " \t\n\r":
-        __lex_start_actions[c] = __lex_start_space
-    for c in "abcdefghijklmnopqrstuvwxyz":
-        __lex_start_actions[c] = __lex_start_alpha
-    for c in "[{]}:,":
-        __lex_start_actions[c] = __lex_start_token
-    for c in "-0123456789":
-        __lex_start_actions[c] = __lex_start_number
-    __lex_start_actions['"'] = __lex_start_string
-
-    def __lex_start(self, c):
-        Parser.__lex_start_actions.get(
-            c, Parser.__lex_start_error)(self, c)
-        return True
-
-    __lex_alpha = {}
-    for c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ":
-        __lex_alpha[c] = True
-
-    def __lex_finish_keyword(self):
-        if self.buffer == "false":
-            self.__parser_input(False)
-        elif self.buffer == "true":
-            self.__parser_input(True)
-        elif self.buffer == "null":
-            self.__parser_input(None)
-        else:
-            self.__error("invalid keyword '%s'" % self.buffer)
-
-    def __lex_keyword(self, c):
-        if c in Parser.__lex_alpha:
-            self.buffer += c
-            return True
-        else:
-            self.__lex_finish_keyword()
-            return False
-
-    __number_re = re.compile("(-)?(0|[1-9][0-9]*)"
-            r"(?:\.([0-9]+))?(?:[eE]([-+]?[0-9]+))?$")
-
-    def __lex_finish_number(self):
-        s = self.buffer
-        m = Parser.__number_re.match(s)
-        if m:
-            sign, integer, fraction, exp = m.groups()
-            if (exp is not None and
-                (int(exp) > sys.maxsize or int(exp) < -sys.maxsize - 1)):
-                self.__error("exponent outside valid range")
-                return
-
-            if fraction is not None and len(fraction.lstrip('0')) == 0:
-                fraction = None
-
-            sig_string = integer
-            if fraction is not None:
-                sig_string += fraction
-            significand = int(sig_string)
-
-            pow10 = 0
-            if fraction is not None:
-                pow10 -= len(fraction)
-            if exp is not None:
-                pow10 += int(exp)
-
-            if significand == 0:
-                self.__parser_input(0)
-                return
-            elif significand <= 2 ** 63:
-                while pow10 > 0 and significand <= 2 ** 63:
-                    significand *= 10
-                    pow10 -= 1
-                while pow10 < 0 and significand % 10 == 0:
-                    significand //= 10
-                    pow10 += 1
-                if (pow10 == 0 and
-                    ((not sign and significand < 2 ** 63) or
-                     (sign and significand <= 2 ** 63))):
-                    if sign:
-                        self.__parser_input(-significand)
-                    else:
-                        self.__parser_input(significand)
-                    return
-
-            value = float(s)
-            if value == float("inf") or value == float("-inf"):
-                self.__error("number outside valid range")
-                return
-            if value == 0:
-                # Suppress negative zero.
-                value = 0
-            self.__parser_input(value)
-        elif re.match("-?0[0-9]", s):
-            self.__error("leading zeros not allowed")
-        elif re.match("-([^0-9]|$)", s):
-            self.__error("'-' must be followed by digit")
-        elif re.match(r"-?(0|[1-9][0-9]*)\.([^0-9]|$)", s):
-            self.__error("decimal point must be followed by digit")
-        elif re.search("e[-+]?([^0-9]|$)", s):
-            self.__error("exponent must contain at least one digit")
-        else:
-            self.__error("syntax error in number")
-
-    def __lex_number(self, c):
-        if c in ".0123456789eE-+":
-            self.buffer += c
-            return True
-        else:
-            self.__lex_finish_number()
-            return False
-
-    __4hex_re = re.compile("[0-9a-fA-F]{4}")
-
-    def __lex_4hex(self, s):
-        if len(s) < 4:
-            self.__error("quoted string ends within \\u escape")
-        elif not Parser.__4hex_re.match(s):
-            self.__error("malformed \\u escape")
-        elif s == "0000":
-            self.__error("null bytes not supported in quoted strings")
-        else:
-            return int(s, 16)
-
-    @staticmethod
-    def __is_leading_surrogate(c):
-        """Returns true if 'c' is a Unicode code point for a leading
-        surrogate."""
-        return c >= 0xd800 and c <= 0xdbff
-
-    @staticmethod
-    def __is_trailing_surrogate(c):
-        """Returns true if 'c' is a Unicode code point for a trailing
-        surrogate."""
-        return c >= 0xdc00 and c <= 0xdfff
-
-    @staticmethod
-    def __utf16_decode_surrogate_pair(leading, trailing):
-        """Returns the unicode code point corresponding to leading surrogate
-        'leading' and trailing surrogate 'trailing'.  The return value will not
-        make any sense if 'leading' or 'trailing' are not in the correct ranges
-        for leading or trailing surrogates."""
-        #  Leading surrogate:         110110wwwwxxxxxx
-        # Trailing surrogate:         110111xxxxxxxxxx
-        #         Code point: 000uuuuuxxxxxxxxxxxxxxxx
-        w = (leading >> 6) & 0xf
-        u = w + 1
-        x0 = leading & 0x3f
-        x1 = trailing & 0x3ff
-        return (u << 16) | (x0 << 10) | x1
-    __unescape = {'"': u'"',
-                  "\\": u"\\",
-                  "/": u"/",
-                  "b": u"\b",
-                  "f": u"\f",
-                  "n": u"\n",
-                  "r": u"\r",
-                  "t": u"\t"}
-
-    def __lex_finish_string(self):
-        inp = self.buffer
-        out = u""
-        while len(inp):
-            backslash = inp.find('\\')
-            if backslash == -1:
-                out += inp
-                break
-            out += inp[:backslash]
-            inp = inp[backslash + 1:]
-            if inp == "":
-                self.__error("quoted string may not end with backslash")
-                return
-
-            replacement = Parser.__unescape.get(inp[0])
-            if replacement is not None:
-                out += replacement
-                inp = inp[1:]
-                continue
-            elif inp[0] != u'u':
-                self.__error("bad escape \\%s" % inp[0])
-                return
-
-            c0 = self.__lex_4hex(inp[1:5])
-            if c0 is None:
-                return
-            inp = inp[5:]
-
-            if Parser.__is_leading_surrogate(c0):
-                if inp[:2] != u'\\u':
-                    self.__error("malformed escaped surrogate pair")
-                    return
-                c1 = self.__lex_4hex(inp[2:6])
-                if c1 is None:
-                    return
-                if not Parser.__is_trailing_surrogate(c1):
-                    self.__error("second half of escaped surrogate pair is "
-                                 "not trailing surrogate")
-                    return
-                code_point = Parser.__utf16_decode_surrogate_pair(c0, c1)
-                inp = inp[6:]
-            else:
-                code_point = c0
-            out += six.unichr(code_point)
-        self.__parser_input('string', out)
-
-    def __lex_string_escape(self, c):
-        self.buffer += c
-        self.lex_state = Parser.__lex_string
-        return True
-
-    def __lex_string(self, c):
-        if c == '\\':
-            self.buffer += c
-            self.lex_state = Parser.__lex_string_escape
-        elif c == '"':
-            self.__lex_finish_string()
-        elif ord(c) >= 0x20:
-            self.buffer += c
-        else:
-            self.__error("U+%04X must be escaped in quoted string" % ord(c))
-        return True
-
-    def __lex_input(self, c):
-        eat = self.lex_state(self, c)
-        assert eat is True or eat is False
-        return eat
-
-    def __parse_start(self, token, unused_string):
-        if token == '{':
-            self.__push_object()
-        elif token == '[':
-            self.__push_array()
-        else:
-            self.__error("syntax error at beginning of input")
-
-    def __parse_end(self, unused_token, unused_string):
-        self.__error("trailing garbage at end of input")
-
-    def __parse_object_init(self, token, string):
-        if token == '}':
-            self.__parser_pop()
-        else:
-            self.__parse_object_name(token, string)
-
-    def __parse_object_name(self, token, string):
-        if token == 'string':
-            self.member_name = string
-            self.parse_state = Parser.__parse_object_colon
-        else:
-            self.__error("syntax error parsing object expecting string")
-
-    def __parse_object_colon(self, token, unused_string):
-        if token == ":":
-            self.parse_state = Parser.__parse_object_value
-        else:
-            self.__error("syntax error parsing object expecting ':'")
-
-    def __parse_object_value(self, token, string):
-        self.__parse_value(token, string, Parser.__parse_object_next)
-
-    def __parse_object_next(self, token, unused_string):
-        if token == ",":
-            self.parse_state = Parser.__parse_object_name
-        elif token == "}":
-            self.__parser_pop()
-        else:
-            self.__error("syntax error expecting '}' or ','")
-
-    def __parse_array_init(self, token, string):
-        if token == ']':
-            self.__parser_pop()
-        else:
-            self.__parse_array_value(token, string)
-
-    def __parse_array_value(self, token, string):
-        self.__parse_value(token, string, Parser.__parse_array_next)
-
-    def __parse_array_next(self, token, unused_string):
-        if token == ",":
-            self.parse_state = Parser.__parse_array_value
-        elif token == "]":
-            self.__parser_pop()
-        else:
-            self.__error("syntax error expecting ']' or ','")
-
-    def __parser_input(self, token, string=None):
-        self.lex_state = Parser.__lex_start
-        self.buffer = ""
-        self.parse_state(self, token, string)
-
-    def __put_value(self, value):
-        top = self.stack[-1]
-        if isinstance(top, dict):
-            top[self.member_name] = value
-        else:
-            top.append(value)
-
-    def __parser_push(self, new_json, next_state):
-        if len(self.stack) < Parser.MAX_HEIGHT:
-            if len(self.stack) > 0:
-                self.__put_value(new_json)
-            self.stack.append(new_json)
-            self.parse_state = next_state
-        else:
-            self.__error("input exceeds maximum nesting depth %d" %
-                         Parser.MAX_HEIGHT)
-
-    def __push_object(self):
-        self.__parser_push({}, Parser.__parse_object_init)
-
-    def __push_array(self):
-        self.__parser_push([], Parser.__parse_array_init)
-
-    def __parser_pop(self):
-        if len(self.stack) == 1:
-            self.parse_state = Parser.__parse_end
-            if not self.check_trailer:
-                self.done = True
-        else:
-            self.stack.pop()
-            top = self.stack[-1]
-            if isinstance(top, list):
-                self.parse_state = Parser.__parse_array_next
-            else:
-                self.parse_state = Parser.__parse_object_next
-
-    def __parse_value(self, token, string, next_state):
-        number_types = list(six.integer_types)
-        number_types.extend([float])
-        number_types = tuple(number_types)
-        if token in [False, None, True] or isinstance(token, number_types):
-            self.__put_value(token)
-        elif token == 'string':
-            self.__put_value(string)
-        else:
-            if token == '{':
-                self.__push_object()
-            elif token == '[':
-                self.__push_array()
-            else:
-                self.__error("syntax error expecting value")
-            return
-        self.parse_state = next_state
-
-    def __error(self, message):
-        if self.error is None:
-            self.error = ("line %d, column %d, byte %d: %s"
-                          % (self.line_number, self.column_number,
-                             self.byte_number, message))
-            self.done = True
-
-    def feed(self, s):
-        i = 0
-        while True:
-            if self.done or i >= len(s):
-                return i
-
-            c = s[i]
-            if self.__lex_input(c):
-                self.byte_number += 1
-                if c == '\n':
-                    self.column_number = 0
-                    self.line_number += 1
-                else:
-                    self.column_number += 1
-
-                i += 1
-
-    def is_done(self):
-        return self.done
-
-    def finish(self):
-        if self.lex_state == Parser.__lex_start:
-            pass
-        elif self.lex_state in (Parser.__lex_string,
-                                Parser.__lex_string_escape):
-            self.__error("unexpected end of input in quoted string")
-        else:
-            self.__lex_input(" ")
-
-        if self.parse_state == Parser.__parse_start:
-            self.__error("empty input stream")
-        elif self.parse_state != Parser.__parse_end:
-            self.__error("unexpected end of input")
-
-        if self.error is None:
-            assert len(self.stack) == 1
-            return self.stack.pop()
-        else:
-            return self.error
diff --git a/python/ovs/jsonrpc.py b/python/ovs/jsonrpc.py
deleted file mode 100644
index 4a3027e9e..000000000
--- a/python/ovs/jsonrpc.py
+++ /dev/null
@@ -1,616 +0,0 @@ 
-# Copyright (c) 2010, 2011, 2012, 2013 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-import codecs
-import errno
-import os
-import random
-import sys
-
-import ovs.json
-import ovs.poller
-import ovs.reconnect
-import ovs.stream
-import ovs.timeval
-import ovs.util
-import ovs.vlog
-
-import six
-
-EOF = ovs.util.EOF
-vlog = ovs.vlog.Vlog("jsonrpc")
-
-
-class Message(object):
-    T_REQUEST = 0               # Request.
-    T_NOTIFY = 1                # Notification.
-    T_REPLY = 2                 # Successful reply.
-    T_ERROR = 3                 # Error reply.
-
-    __types = {T_REQUEST: "request",
-               T_NOTIFY: "notification",
-               T_REPLY: "reply",
-               T_ERROR: "error"}
-
-    def __init__(self, type_, method, params, result, error, id):
-        self.type = type_
-        self.method = method
-        self.params = params
-        self.result = result
-        self.error = error
-        self.id = id
-
-    _next_id = 0
-
-    @staticmethod
-    def _create_id():
-        this_id = Message._next_id
-        Message._next_id += 1
-        return this_id
-
-    @staticmethod
-    def create_request(method, params):
-        return Message(Message.T_REQUEST, method, params, None, None,
-                       Message._create_id())
-
-    @staticmethod
-    def create_notify(method, params):
-        return Message(Message.T_NOTIFY, method, params, None, None,
-                       None)
-
-    @staticmethod
-    def create_reply(result, id):
-        return Message(Message.T_REPLY, None, None, result, None, id)
-
-    @staticmethod
-    def create_error(error, id):
-        return Message(Message.T_ERROR, None, None, None, error, id)
-
-    @staticmethod
-    def type_to_string(type_):
-        return Message.__types[type_]
-
-    def __validate_arg(self, value, name, must_have):
-        if (value is not None) == (must_have != 0):
-            return None
-        else:
-            type_name = Message.type_to_string(self.type)
-            if must_have:
-                verb = "must"
-            else:
-                verb = "must not"
-            return "%s %s have \"%s\"" % (type_name, verb, name)
-
-    def is_valid(self):
-        if self.params is not None and not isinstance(self.params, list):
-            return "\"params\" must be JSON array"
-
-        pattern = {Message.T_REQUEST: 0x11001,
-                   Message.T_NOTIFY: 0x11000,
-                   Message.T_REPLY: 0x00101,
-                   Message.T_ERROR: 0x00011}.get(self.type)
-        if pattern is None:
-            return "invalid JSON-RPC message type %s" % self.type
-
-        return (
-            self.__validate_arg(self.method, "method", pattern & 0x10000) or
-            self.__validate_arg(self.params, "params", pattern & 0x1000) or
-            self.__validate_arg(self.result, "result", pattern & 0x100) or
-            self.__validate_arg(self.error, "error", pattern & 0x10) or
-            self.__validate_arg(self.id, "id", pattern & 0x1))
-
-    @staticmethod
-    def from_json(json):
-        if not isinstance(json, dict):
-            return "message is not a JSON object"
-
-        # Make a copy to avoid modifying the caller's dict.
-        json = dict(json)
-
-        if "method" in json:
-            method = json.pop("method")
-            if not isinstance(method, six.string_types):
-                return "method is not a JSON string"
-        else:
-            method = None
-
-        params = json.pop("params", None)
-        result = json.pop("result", None)
-        error = json.pop("error", None)
-        id_ = json.pop("id", None)
-        if len(json):
-            return "message has unexpected member \"%s\"" % json.popitem()[0]
-
-        if result is not None:
-            msg_type = Message.T_REPLY
-        elif error is not None:
-            msg_type = Message.T_ERROR
-        elif id_ is not None:
-            msg_type = Message.T_REQUEST
-        else:
-            msg_type = Message.T_NOTIFY
-
-        msg = Message(msg_type, method, params, result, error, id_)
-        validation_error = msg.is_valid()
-        if validation_error is not None:
-            return validation_error
-        else:
-            return msg
-
-    def to_json(self):
-        json = {}
-
-        if self.method is not None:
-            json["method"] = self.method
-
-        if self.params is not None:
-            json["params"] = self.params
-
-        if self.result is not None or self.type == Message.T_ERROR:
-            json["result"] = self.result
-
-        if self.error is not None or self.type == Message.T_REPLY:
-            json["error"] = self.error
-
-        if self.id is not None or self.type == Message.T_NOTIFY:
-            json["id"] = self.id
-
-        return json
-
-    def __str__(self):
-        s = [Message.type_to_string(self.type)]
-        if self.method is not None:
-            s.append("method=\"%s\"" % self.method)
-        if self.params is not None:
-            s.append("params=" + ovs.json.to_string(self.params))
-        if self.result is not None:
-            s.append("result=" + ovs.json.to_string(self.result))
-        if self.error is not None:
-            s.append("error=" + ovs.json.to_string(self.error))
-        if self.id is not None:
-            s.append("id=" + ovs.json.to_string(self.id))
-        return ", ".join(s)
-
-
-class Connection(object):
-    def __init__(self, stream):
-        self.name = stream.name
-        self.stream = stream
-        self.status = 0
-        self.input = ""
-        self.output = ""
-        self.parser = None
-        self.received_bytes = 0
-
-    def close(self):
-        self.stream.close()
-        self.stream = None
-
-    def run(self):
-        if self.status:
-            return
-
-        while len(self.output):
-            retval = self.stream.send(self.output)
-            if retval >= 0:
-                self.output = self.output[retval:]
-            else:
-                if retval != -errno.EAGAIN:
-                    vlog.warn("%s: send error: %s" %
-                              (self.name, os.strerror(-retval)))
-                    self.error(-retval)
-                break
-
-    def wait(self, poller):
-        if not self.status:
-            self.stream.run_wait(poller)
-            if len(self.output):
-                self.stream.send_wait(poller)
-
-    def get_status(self):
-        return self.status
-
-    def get_backlog(self):
-        if self.status != 0:
-            return 0
-        else:
-            return len(self.output)
-
-    def get_received_bytes(self):
-        return self.received_bytes
-
-    def __log_msg(self, title, msg):
-        if vlog.dbg_is_enabled():
-            vlog.dbg("%s: %s %s" % (self.name, title, msg))
-
-    def send(self, msg):
-        if self.status:
-            return self.status
-
-        self.__log_msg("send", msg)
-
-        was_empty = len(self.output) == 0
-        self.output += ovs.json.to_string(msg.to_json())
-        if was_empty:
-            self.run()
-        return self.status
-
-    def send_block(self, msg):
-        error = self.send(msg)
-        if error:
-            return error
-
-        while True:
-            self.run()
-            if not self.get_backlog() or self.get_status():
-                return self.status
-
-            poller = ovs.poller.Poller()
-            self.wait(poller)
-            poller.block()
-
-    def recv(self):
-        if self.status:
-            return self.status, None
-
-        decoder = codecs.getincrementaldecoder('utf-8')()
-        while True:
-            if not self.input:
-                error, data = self.stream.recv(4096)
-                # Python 3 has separate types for strings and bytes.  We
-                # received bytes from a socket.  We expect it to be string
-                # data, so we convert it here as soon as possible.
-                if data and not error:
-                    try:
-                        if six.PY3 or ovs.json.PARSER == ovs.json.PARSER_PY:
-                            data = decoder.decode(data)
-                    except UnicodeError:
-                        error = errno.EILSEQ
-                if error:
-                    if (sys.platform == "win32" and
-                            error == errno.WSAEWOULDBLOCK):
-                        # WSAEWOULDBLOCK would be the equivalent on Windows
-                        # for EAGAIN on Unix.
-                        error = errno.EAGAIN
-                    if error == errno.EAGAIN:
-                        return error, None
-                    else:
-                        # XXX rate-limit
-                        vlog.warn("%s: receive error: %s"
-                                  % (self.name, os.strerror(error)))
-                        self.error(error)
-                        return self.status, None
-                elif not data:
-                    self.error(EOF)
-                    return EOF, None
-                else:
-                    self.input += data
-                    self.received_bytes += len(data)
-            else:
-                if self.parser is None:
-                    self.parser = ovs.json.Parser()
-                if six.PY3 and ovs.json.PARSER == ovs.json.PARSER_C:
-                    self.input = self.input.encode('utf-8')[
-                        self.parser.feed(self.input):].decode()
-                else:
-                    self.input = self.input[self.parser.feed(self.input):]
-                if self.parser.is_done():
-                    msg = self.__process_msg()
-                    if msg:
-                        return 0, msg
-                    else:
-                        return self.status, None
-
-    def recv_block(self):
-        while True:
-            error, msg = self.recv()
-            if error != errno.EAGAIN:
-                return error, msg
-
-            self.run()
-
-            poller = ovs.poller.Poller()
-            self.wait(poller)
-            self.recv_wait(poller)
-            poller.block()
-
-    def transact_block(self, request):
-        id_ = request.id
-
-        error = self.send(request)
-        reply = None
-        while not error:
-            error, reply = self.recv_block()
-            if (reply
-                and (reply.type == Message.T_REPLY
-                     or reply.type == Message.T_ERROR)
-                and reply.id == id_):
-                break
-        return error, reply
-
-    def __process_msg(self):
-        json = self.parser.finish()
-        self.parser = None
-        if isinstance(json, six.string_types):
-            # XXX rate-limit
-            vlog.warn("%s: error parsing stream: %s" % (self.name, json))
-            self.error(errno.EPROTO)
-            return
-
-        msg = Message.from_json(json)
-        if not isinstance(msg, Message):
-            # XXX rate-limit
-            vlog.warn("%s: received bad JSON-RPC message: %s"
-                      % (self.name, msg))
-            self.error(errno.EPROTO)
-            return
-
-        self.__log_msg("received", msg)
-        return msg
-
-    def recv_wait(self, poller):
-        if self.status or self.input:
-            poller.immediate_wake()
-        else:
-            self.stream.recv_wait(poller)
-
-    def error(self, error):
-        if self.status == 0:
-            self.status = error
-            self.stream.close()
-            self.output = ""
-
-
-class Session(object):
-    """A JSON-RPC session with reconnection."""
-
-    def __init__(self, reconnect, rpc, remotes):
-        self.reconnect = reconnect
-        self.rpc = rpc
-        self.stream = None
-        self.pstream = None
-        self.seqno = 0
-        if type(remotes) != list:
-            remotes = [remotes]
-        self.remotes = remotes
-        random.shuffle(self.remotes)
-        self.next_remote = 0
-
-    @staticmethod
-    def open(name, probe_interval=None):
-        """Creates and returns a Session that maintains a JSON-RPC session to
-        'name', which should be a string acceptable to ovs.stream.Stream or
-        ovs.stream.PassiveStream's initializer.
-
-        If 'name' is an active connection method, e.g. "tcp:127.1.2.3", the new
-        session connects and reconnects, with back-off, to 'name'.
-
-        If 'name' is a passive connection method, e.g. "ptcp:", the new session
-        listens for connections to 'name'.  It maintains at most one connection
-        at any given time.  Any new connection causes the previous one (if any)
-        to be dropped.
-
-        If "probe_interval" is zero it disables the connection keepalive
-        feature. If non-zero the value will be forced to at least 1000
-        milliseconds. If None it will just use the default value in OVS.
-        """
-        return Session.open_multiple([name], probe_interval=probe_interval)
-
-    @staticmethod
-    def open_multiple(remotes, probe_interval=None):
-        reconnect = ovs.reconnect.Reconnect(ovs.timeval.msec())
-        session = Session(reconnect, None, remotes)
-        session.pick_remote()
-        reconnect.enable(ovs.timeval.msec())
-        reconnect.set_backoff_free_tries(len(remotes))
-        if ovs.stream.PassiveStream.is_valid_name(reconnect.get_name()):
-            reconnect.set_passive(True, ovs.timeval.msec())
-
-        if not ovs.stream.stream_or_pstream_needs_probes(reconnect.get_name()):
-            reconnect.set_probe_interval(0)
-        elif probe_interval is not None:
-            reconnect.set_probe_interval(probe_interval)
-
-        return session
-
-    @staticmethod
-    def open_unreliably(jsonrpc):
-        reconnect = ovs.reconnect.Reconnect(ovs.timeval.msec())
-        session = Session(reconnect, None, [jsonrpc.name])
-        reconnect.set_quiet(True)
-        session.pick_remote()
-        reconnect.set_max_tries(0)
-        reconnect.connected(ovs.timeval.msec())
-        return session
-
-    def pick_remote(self):
-        self.reconnect.set_name(self.remotes[self.next_remote])
-        self.next_remote = (self.next_remote + 1) % len(self.remotes)
-
-    def close(self):
-        if self.rpc is not None:
-            self.rpc.close()
-            self.rpc = None
-        if self.stream is not None:
-            self.stream.close()
-            self.stream = None
-        if self.pstream is not None:
-            self.pstream.close()
-            self.pstream = None
-
-    def __disconnect(self):
-        if self.rpc is not None:
-            self.rpc.error(EOF)
-            self.rpc.close()
-            self.rpc = None
-        elif self.stream is not None:
-            self.stream.close()
-            self.stream = None
-        else:
-            return
-
-        self.seqno += 1
-        self.pick_remote()
-
-    def __connect(self):
-        self.__disconnect()
-
-        name = self.reconnect.get_name()
-        if not self.reconnect.is_passive():
-            error, self.stream = ovs.stream.Stream.open(name)
-            if not error:
-                self.reconnect.connecting(ovs.timeval.msec())
-            else:
-                self.reconnect.connect_failed(ovs.timeval.msec(), error)
-                self.stream = None
-                self.pick_remote()
-        elif self.pstream is None:
-            error, self.pstream = ovs.stream.PassiveStream.open(name)
-            if not error:
-                self.reconnect.listening(ovs.timeval.msec())
-            else:
-                self.reconnect.connect_failed(ovs.timeval.msec(), error)
-                self.pick_remote()
-
-        self.seqno += 1
-
-    def run(self):
-        if self.pstream is not None:
-            error, stream = self.pstream.accept()
-            if error == 0:
-                if self.rpc or self.stream:
-                    # XXX rate-limit
-                    vlog.info("%s: new connection replacing active "
-                              "connection" % self.reconnect.get_name())
-                    self.__disconnect()
-                self.reconnect.connected(ovs.timeval.msec())
-                self.rpc = Connection(stream)
-            elif error != errno.EAGAIN:
-                self.reconnect.listen_error(ovs.timeval.msec(), error)
-                self.pstream.close()
-                self.pstream = None
-
-        if self.rpc:
-            backlog = self.rpc.get_backlog()
-            self.rpc.run()
-            if self.rpc.get_backlog() < backlog:
-                # Data previously caught in a queue was successfully sent (or
-                # there's an error, which we'll catch below).
-                #
-                # We don't count data that is successfully sent immediately as
-                # activity, because there's a lot of queuing downstream from
-                # us, which means that we can push a lot of data into a
-                # connection that has stalled and won't ever recover.
-                self.reconnect.activity(ovs.timeval.msec())
-
-            error = self.rpc.get_status()
-            if error != 0:
-                self.reconnect.disconnected(ovs.timeval.msec(), error)
-                self.__disconnect()
-        elif self.stream is not None:
-            self.stream.run()
-            error = self.stream.connect()
-            if error == 0:
-                self.reconnect.connected(ovs.timeval.msec())
-                self.rpc = Connection(self.stream)
-                self.stream = None
-            elif error != errno.EAGAIN:
-                self.reconnect.connect_failed(ovs.timeval.msec(), error)
-                self.pick_remote()
-                self.stream.close()
-                self.stream = None
-
-        action = self.reconnect.run(ovs.timeval.msec())
-        if action == ovs.reconnect.CONNECT:
-            self.__connect()
-        elif action == ovs.reconnect.DISCONNECT:
-            self.reconnect.disconnected(ovs.timeval.msec(), 0)
-            self.__disconnect()
-        elif action == ovs.reconnect.PROBE:
-            if self.rpc:
-                request = Message.create_request("echo", [])
-                request.id = "echo"
-                self.rpc.send(request)
-        else:
-            assert action is None
-
-    def wait(self, poller):
-        if self.rpc is not None:
-            self.rpc.wait(poller)
-        elif self.stream is not None:
-            self.stream.run_wait(poller)
-            self.stream.connect_wait(poller)
-        if self.pstream is not None:
-            self.pstream.wait(poller)
-        self.reconnect.wait(poller, ovs.timeval.msec())
-
-    def get_backlog(self):
-        if self.rpc is not None:
-            return self.rpc.get_backlog()
-        else:
-            return 0
-
-    def get_name(self):
-        return self.reconnect.get_name()
-
-    def send(self, msg):
-        if self.rpc is not None:
-            return self.rpc.send(msg)
-        else:
-            return errno.ENOTCONN
-
-    def recv(self):
-        if self.rpc is not None:
-            received_bytes = self.rpc.get_received_bytes()
-            error, msg = self.rpc.recv()
-            if received_bytes != self.rpc.get_received_bytes():
-                # Data was successfully received.
-                #
-                # Previously we only counted receiving a full message as
-                # activity, but with large messages or a slow connection that
-                # policy could time out the session mid-message.
-                self.reconnect.activity(ovs.timeval.msec())
-
-            if not error:
-                if msg.type == Message.T_REQUEST and msg.method == "echo":
-                    # Echo request.  Send reply.
-                    self.send(Message.create_reply(msg.params, msg.id))
-                elif msg.type == Message.T_REPLY and msg.id == "echo":
-                    # It's a reply to our echo request.  Suppress it.
-                    pass
-                else:
-                    return msg
-        return None
-
-    def recv_wait(self, poller):
-        if self.rpc is not None:
-            self.rpc.recv_wait(poller)
-
-    def is_alive(self):
-        if self.rpc is not None or self.stream is not None:
-            return True
-        else:
-            max_tries = self.reconnect.get_max_tries()
-            return max_tries is None or max_tries > 0
-
-    def is_connected(self):
-        return self.rpc is not None
-
-    def get_seqno(self):
-        return self.seqno
-
-    def force_reconnect(self):
-        self.reconnect.force_reconnect(ovs.timeval.msec())
-
-    def get_num_of_remotes(self):
-        return len(self.remotes)
diff --git a/python/ovs/ovsuuid.py b/python/ovs/ovsuuid.py
deleted file mode 100644
index 35c5bd29f..000000000
--- a/python/ovs/ovsuuid.py
+++ /dev/null
@@ -1,70 +0,0 @@ 
-# Copyright (c) 2009, 2010, 2011, 2016 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import re
-import uuid
-
-import ovs.db.parser
-from ovs.db import error
-
-import six
-from six.moves import range
-
-uuidRE = re.compile("^xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx$"
-                    .replace('x', '[0-9a-fA-F]'))
-
-
-def zero():
-    return uuid.UUID(int=0)
-
-
-def is_valid_string(s):
-    return uuidRE.match(s) is not None
-
-
-def from_string(s):
-    if not is_valid_string(s):
-        raise error.Error("%s is not a valid UUID" % s)
-    return uuid.UUID(s)
-
-
-def from_json(json, symtab=None):
-    try:
-        s = ovs.db.parser.unwrap_json(json, "uuid", six.string_types, "string")
-        if not uuidRE.match(s):
-            raise error.Error("\"%s\" is not a valid UUID" % s, json)
-        return uuid.UUID(s)
-    except error.Error as e:
-        if not symtab:
-            raise e
-        try:
-            name = ovs.db.parser.unwrap_json(json, "named-uuid",
-                                             six.string_types, "string")
-        except error.Error:
-            raise e
-
-        if name not in symtab:
-            symtab[name] = uuid.uuid4()
-        return symtab[name]
-
-
-def to_json(uuid_):
-    return ["uuid", str(uuid_)]
-
-
-def to_c_initializer(uuid_, var):
-    hex_string = uuid_.hex
-    parts = ["0x%s" % (hex_string[x * 8:(x + 1) * 8])
-            for x in range(4)]
-    return "{ %s }," % ", ".join(parts)
diff --git a/python/ovs/poller.py b/python/ovs/poller.py
deleted file mode 100644
index 3624ec865..000000000
--- a/python/ovs/poller.py
+++ /dev/null
@@ -1,290 +0,0 @@ 
-# Copyright (c) 2010, 2015 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import errno
-import os
-
-import select
-import socket
-import sys
-
-import ovs.timeval
-import ovs.vlog
-
-if sys.platform == "win32":
-    import ovs.winutils as winutils
-
-try:
-    from OpenSSL import SSL
-except ImportError:
-    SSL = None
-
-try:
-    from eventlet import patcher as eventlet_patcher
-
-    def _using_eventlet_green_select():
-        return eventlet_patcher.is_monkey_patched(select)
-except:
-    eventlet_patcher = None
-
-    def _using_eventlet_green_select():
-        return False
-
-try:
-    from gevent import monkey as gevent_monkey
-except:
-    gevent_monkey = None
-
-
-vlog = ovs.vlog.Vlog("poller")
-
-POLLIN = 0x001
-POLLOUT = 0x004
-POLLERR = 0x008
-POLLHUP = 0x010
-POLLNVAL = 0x020
-
-
-# eventlet/gevent doesn't support select.poll. If select.poll is used,
-# python interpreter is blocked as a whole instead of switching from the
-# current thread that is about to block to other runnable thread.
-# So emulate select.poll by select.select because using python means that
-# performance isn't so important.
-class _SelectSelect(object):
-    """ select.poll emulation by using select.select.
-    Only register and poll are needed at the moment.
-    """
-    def __init__(self):
-        self.rlist = []
-        self.wlist = []
-        self.xlist = []
-
-    def register(self, fd, events):
-        if isinstance(fd, socket.socket):
-            fd = fd.fileno()
-        if SSL and isinstance(fd, SSL.Connection):
-            fd = fd.fileno()
-
-        if sys.platform != 'win32':
-            # Skip this on Windows, it also register events
-            assert isinstance(fd, int)
-        if events & POLLIN:
-            self.rlist.append(fd)
-            events &= ~POLLIN
-        if events & POLLOUT:
-            self.wlist.append(fd)
-            events &= ~POLLOUT
-        if events:
-            self.xlist.append(fd)
-
-    def poll(self, timeout):
-        # XXX workaround a bug in eventlet
-        # see https://github.com/eventlet/eventlet/pull/25
-        if timeout == 0 and _using_eventlet_green_select():
-            timeout = 0.1
-        if sys.platform == 'win32':
-            events = self.rlist + self.wlist + self.xlist
-            if not events:
-                return []
-            if len(events) > winutils.win32event.MAXIMUM_WAIT_OBJECTS:
-                raise WindowsError("Cannot handle more than maximum wait"
-                                   "objects\n")
-
-            # win32event.INFINITE timeout is -1
-            # timeout must be an int number, expressed in ms
-            if timeout == 0.1:
-                timeout = 100
-            else:
-                timeout = int(timeout)
-
-            # Wait until any of the events is set to signaled
-            try:
-                retval = winutils.win32event.WaitForMultipleObjects(
-                    events,
-                    False,  # Wait all
-                    timeout)
-            except winutils.pywintypes.error:
-                return [(0, POLLERR)]
-
-            if retval == winutils.winerror.WAIT_TIMEOUT:
-                return []
-
-            if events[retval] in self.rlist:
-                revent = POLLIN
-            elif events[retval] in self.wlist:
-                revent = POLLOUT
-            else:
-                revent = POLLERR
-
-            return [(events[retval], revent)]
-        else:
-            if timeout == -1:
-                # epoll uses -1 for infinite timeout, select uses None.
-                timeout = None
-            else:
-                timeout = float(timeout) / 1000
-            rlist, wlist, xlist = select.select(self.rlist,
-                                                self.wlist,
-                                                self.xlist,
-                                                timeout)
-            events_dict = {}
-            for fd in rlist:
-                events_dict[fd] = events_dict.get(fd, 0) | POLLIN
-            for fd in wlist:
-                events_dict[fd] = events_dict.get(fd, 0) | POLLOUT
-            for fd in xlist:
-                events_dict[fd] = events_dict.get(fd, 0) | (POLLERR |
-                                                            POLLHUP |
-                                                            POLLNVAL)
-            return list(events_dict.items())
-
-
-SelectPoll = _SelectSelect
-# If eventlet/gevent isn't used, we can use select.poll by replacing
-# _SelectPoll with select.poll class
-# _SelectPoll = select.poll
-
-
-class Poller(object):
-    """High-level wrapper around the "poll" system call.
-
-    Intended usage is for the program's main loop to go about its business
-    servicing whatever events it needs to.  Then, when it runs out of immediate
-    tasks, it calls each subordinate module or object's "wait" function, which
-    in turn calls one (or more) of the functions Poller.fd_wait(),
-    Poller.immediate_wake(), and Poller.timer_wait() to register to be awakened
-    when the appropriate event occurs.  Then the main loop calls
-    Poller.block(), which blocks until one of the registered events happens."""
-
-    def __init__(self):
-        self.__reset()
-
-    def fd_wait(self, fd, events):
-        """Registers 'fd' as waiting for the specified 'events' (which should
-        be select.POLLIN or select.POLLOUT or their bitwise-OR).  The following
-        call to self.block() will wake up when 'fd' becomes ready for one or
-        more of the requested events.
-
-        The event registration is one-shot: only the following call to
-        self.block() is affected.  The event will need to be re-registered
-        after self.block() is called if it is to persist.
-
-        'fd' may be an integer file descriptor or an object with a fileno()
-        method that returns an integer file descriptor."""
-        self.poll.register(fd, events)
-
-    def __timer_wait(self, msec):
-        if self.timeout < 0 or msec < self.timeout:
-            self.timeout = msec
-
-    def timer_wait(self, msec):
-        """Causes the following call to self.block() to block for no more than
-        'msec' milliseconds.  If 'msec' is nonpositive, the following call to
-        self.block() will not block at all.
-
-        The timer registration is one-shot: only the following call to
-        self.block() is affected.  The timer will need to be re-registered
-        after self.block() is called if it is to persist."""
-        if msec <= 0:
-            self.immediate_wake()
-        else:
-            self.__timer_wait(msec)
-
-    def timer_wait_until(self, msec):
-        """Causes the following call to self.block() to wake up when the
-        current time, as returned by ovs.timeval.msec(), reaches 'msec' or
-        later.  If 'msec' is earlier than the current time, the following call
-        to self.block() will not block at all.
-
-        The timer registration is one-shot: only the following call to
-        self.block() is affected.  The timer will need to be re-registered
-        after self.block() is called if it is to persist."""
-        now = ovs.timeval.msec()
-        if msec <= now:
-            self.immediate_wake()
-        else:
-            self.__timer_wait(msec - now)
-
-    def immediate_wake(self):
-        """Causes the following call to self.block() to wake up immediately,
-        without blocking."""
-        self.timeout = 0
-
-    def block(self):
-        """Blocks until one or more of the events registered with
-        self.fd_wait() occurs, or until the minimum duration registered with
-        self.timer_wait() elapses, or not at all if self.immediate_wake() has
-        been called."""
-        try:
-            try:
-                events = self.poll.poll(self.timeout)
-                self.__log_wakeup(events)
-            except OSError as e:
-                """ On Windows, the select function from poll raises OSError
-                exception if the polled array is empty."""
-                if e.errno != errno.EINTR:
-                    vlog.err("poll: %s" % os.strerror(e.errno))
-            except select.error as e:
-                # XXX rate-limit
-                error, msg = e
-                if error != errno.EINTR:
-                    vlog.err("poll: %s" % e[1])
-        finally:
-            self.__reset()
-
-    def __log_wakeup(self, events):
-        if not events:
-            vlog.dbg("%d-ms timeout" % self.timeout)
-        else:
-            for fd, revents in events:
-                if revents != 0:
-                    s = ""
-                    if revents & POLLIN:
-                        s += "[POLLIN]"
-                    if revents & POLLOUT:
-                        s += "[POLLOUT]"
-                    if revents & POLLERR:
-                        s += "[POLLERR]"
-                    if revents & POLLHUP:
-                        s += "[POLLHUP]"
-                    if revents & POLLNVAL:
-                        s += "[POLLNVAL]"
-                    vlog.dbg("%s on fd %d" % (s, fd))
-
-    def __reset(self):
-        self.poll = SelectPoll()
-        self.timeout = -1
-
-
-def get_system_poll():
-    """Returns the original select.poll() object. If select.poll is
-    monkey patched by eventlet or gevent library, it gets the original
-    select.poll and returns an object of it using the
-    eventlet.patcher.original/gevent.monkey.get_original functions.
-
-    As a last resort, if there is any exception it returns the
-    SelectPoll() object.
-    """
-    try:
-        if _using_eventlet_green_select():
-            _system_poll = eventlet_patcher.original("select").poll
-        elif gevent_monkey and gevent_monkey.is_object_patched(
-                'select', 'poll'):
-            _system_poll = gevent_monkey.get_original('select', 'poll')
-        else:
-            _system_poll = select.poll
-    except:
-        _system_poll = SelectPoll
-
-    return _system_poll()
diff --git a/python/ovs/process.py b/python/ovs/process.py
deleted file mode 100644
index d7561310c..000000000
--- a/python/ovs/process.py
+++ /dev/null
@@ -1,41 +0,0 @@ 
-# Copyright (c) 2010, 2011 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import os
-import signal
-
-
-def _signal_status_msg(type_, signr):
-    s = "%s by signal %d" % (type_, signr)
-    for name in signal.__dict__:
-        if name.startswith("SIG") and getattr(signal, name) == signr:
-            return "%s (%s)" % (s, name)
-    return s
-
-
-def status_msg(status):
-    """Given 'status', which is a process status in the form reported by
-    waitpid(2) and returned by process_status(), returns a string describing
-    how the process terminated."""
-    if os.WIFEXITED(status):
-        s = "exit status %d" % os.WEXITSTATUS(status)
-    elif os.WIFSIGNALED(status):
-        s = _signal_status_msg("killed", os.WTERMSIG(status))
-    elif os.WIFSTOPPED(status):
-        s = _signal_status_msg("stopped", os.WSTOPSIG(status))
-    else:
-        s = "terminated abnormally (%x)" % status
-    if os.WCOREDUMP(status):
-        s += ", core dumped"
-    return s
diff --git a/python/ovs/reconnect.py b/python/ovs/reconnect.py
deleted file mode 100644
index 574db7fdd..000000000
--- a/python/ovs/reconnect.py
+++ /dev/null
@@ -1,608 +0,0 @@ 
-# Copyright (c) 2010, 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import os
-
-import ovs.util
-import ovs.vlog
-
-# Values returned by Reconnect.run()
-CONNECT = 'connect'
-DISCONNECT = 'disconnect'
-PROBE = 'probe'
-
-EOF = ovs.util.EOF
-vlog = ovs.vlog.Vlog("reconnect")
-
-
-class Reconnect(object):
-    """A finite-state machine for connecting and reconnecting to a network
-    resource with exponential backoff.  It also provides optional support for
-    detecting a connection on which the peer is no longer responding.
-
-    The library does not implement anything networking related, only an FSM for
-    networking code to use.
-
-    Many Reconnect methods take a "now" argument.  This makes testing easier
-    since there is no hidden state.  When not testing, just pass the return
-    value of ovs.time.msec().  (Perhaps this design should be revisited
-    later.)"""
-
-    class Void(object):
-        name = "VOID"
-        is_connected = False
-
-        @staticmethod
-        def deadline(fsm):
-            return None
-
-        @staticmethod
-        def run(fsm, now):
-            return None
-
-    class Listening(object):
-        name = "LISTENING"
-        is_connected = False
-
-        @staticmethod
-        def deadline(fsm):
-            return None
-
-        @staticmethod
-        def run(fsm, now):
-            return None
-
-    class Backoff(object):
-        name = "BACKOFF"
-        is_connected = False
-
-        @staticmethod
-        def deadline(fsm):
-            return fsm.state_entered + fsm.backoff
-
-        @staticmethod
-        def run(fsm, now):
-            return CONNECT
-
-    class ConnectInProgress(object):
-        name = "CONNECTING"
-        is_connected = False
-
-        @staticmethod
-        def deadline(fsm):
-            return fsm.state_entered + max(1000, fsm.backoff)
-
-        @staticmethod
-        def run(fsm, now):
-            return DISCONNECT
-
-    class Active(object):
-        name = "ACTIVE"
-        is_connected = True
-
-        @staticmethod
-        def deadline(fsm):
-            if fsm.probe_interval:
-                base = max(fsm.last_activity, fsm.state_entered)
-                return base + fsm.probe_interval
-            return None
-
-        @staticmethod
-        def run(fsm, now):
-            vlog.dbg("%s: idle %d ms, sending inactivity probe"
-                     % (fsm.name,
-                        now - max(fsm.last_activity, fsm.state_entered)))
-            fsm._transition(now, Reconnect.Idle)
-            return PROBE
-
-    class Idle(object):
-        name = "IDLE"
-        is_connected = True
-
-        @staticmethod
-        def deadline(fsm):
-            if fsm.probe_interval:
-                return fsm.state_entered + fsm.probe_interval
-            return None
-
-        @staticmethod
-        def run(fsm, now):
-            vlog.err("%s: no response to inactivity probe after %.3g "
-                     "seconds, disconnecting"
-                      % (fsm.name, (now - fsm.state_entered) / 1000.0))
-            return DISCONNECT
-
-    class Reconnect(object):
-        name = "RECONNECT"
-        is_connected = False
-
-        @staticmethod
-        def deadline(fsm):
-            return fsm.state_entered
-
-        @staticmethod
-        def run(fsm, now):
-            return DISCONNECT
-
-    def __init__(self, now):
-        """Creates and returns a new reconnect FSM with default settings.  The
-        FSM is initially disabled.  The caller will likely want to call
-        self.enable() and self.set_name() on the returned object."""
-
-        self.name = "void"
-        self.min_backoff = 1000
-        self.max_backoff = 8000
-        self.probe_interval = 5000
-        self.passive = False
-        self.info_level = vlog.info
-
-        self.state = Reconnect.Void
-        self.state_entered = now
-        self.backoff = 0
-        self.last_activity = now
-        self.last_connected = None
-        self.last_disconnected = None
-        self.max_tries = None
-        self.backoff_free_tries = 0
-
-        self.creation_time = now
-        self.n_attempted_connections = 0
-        self.n_successful_connections = 0
-        self.total_connected_duration = 0
-        self.seqno = 0
-
-    def set_quiet(self, quiet):
-        """If 'quiet' is true, this object will log informational messages at
-        debug level, by default keeping them out of log files.  This is
-        appropriate if the connection is one that is expected to be
-        short-lived, so that the log messages are merely distracting.
-
-        If 'quiet' is false, this object logs informational messages at info
-        level.  This is the default.
-
-        This setting has no effect on the log level of debugging, warning, or
-        error messages."""
-        if quiet:
-            self.info_level = vlog.dbg
-        else:
-            self.info_level = vlog.info
-
-    def get_name(self):
-        return self.name
-
-    def set_name(self, name):
-        """Sets this object's name to 'name'.  If 'name' is None, then "void"
-        is used instead.
-
-        The name is used in log messages."""
-        if name is None:
-            self.name = "void"
-        else:
-            self.name = name
-
-    def get_min_backoff(self):
-        """Return the minimum number of milliseconds to back off between
-        consecutive connection attempts.  The default is 1000 ms."""
-        return self.min_backoff
-
-    def get_max_backoff(self):
-        """Return the maximum number of milliseconds to back off between
-        consecutive connection attempts.  The default is 8000 ms."""
-        return self.max_backoff
-
-    def get_probe_interval(self):
-        """Returns the "probe interval" in milliseconds.  If this is zero, it
-        disables the connection keepalive feature.  If it is nonzero, then if
-        the interval passes while the FSM is connected and without
-        self.activity() being called, self.run() returns ovs.reconnect.PROBE.
-        If the interval passes again without self.activity() being called,
-        self.run() returns ovs.reconnect.DISCONNECT."""
-        return self.probe_interval
-
-    def set_max_tries(self, max_tries):
-        """Limits the maximum number of times that this object will ask the
-        client to try to reconnect to 'max_tries'.  None (the default) means an
-        unlimited number of tries.
-
-        After the number of tries has expired, the FSM will disable itself
-        instead of backing off and retrying."""
-        self.max_tries = max_tries
-
-    def get_max_tries(self):
-        """Returns the current remaining number of connection attempts,
-        None if the number is unlimited."""
-        return self.max_tries
-
-    def set_backoff(self, min_backoff, max_backoff):
-        """Configures the backoff parameters for this FSM.  'min_backoff' is
-        the minimum number of milliseconds, and 'max_backoff' is the maximum,
-        between connection attempts.
-
-        'min_backoff' must be at least 1000, and 'max_backoff' must be greater
-        than or equal to 'min_backoff'."""
-        self.min_backoff = max(min_backoff, 1000)
-        if self.max_backoff:
-            self.max_backoff = max(max_backoff, 1000)
-        else:
-            self.max_backoff = 8000
-        if self.min_backoff > self.max_backoff:
-            self.max_backoff = self.min_backoff
-
-        if (self.state == Reconnect.Backoff and
-            self.backoff > self.max_backoff):
-            self.backoff = self.max_backoff
-
-    def set_backoff_free_tries(self, backoff_free_tries):
-        """Sets the number of connection attempts that will be made without
-        backoff to 'backoff_free_tries'.  Values 0 and 1 both
-        represent a single attempt."""
-        self.backoff_free_tries = backoff_free_tries
-
-    def set_probe_interval(self, probe_interval):
-        """Sets the "probe interval" to 'probe_interval', in milliseconds.  If
-        this is zero, it disables the connection keepalive feature.  If it is
-        nonzero, then if the interval passes while this FSM is connected and
-        without self.activity() being called, self.run() returns
-        ovs.reconnect.PROBE.  If the interval passes again without
-        self.activity() being called, self.run() returns
-        ovs.reconnect.DISCONNECT.
-
-        If 'probe_interval' is nonzero, then it will be forced to a value of at
-        least 1000 ms."""
-        if probe_interval:
-            self.probe_interval = max(1000, probe_interval)
-        else:
-            self.probe_interval = 0
-
-    def is_passive(self):
-        """Returns true if 'fsm' is in passive mode, false if 'fsm' is in
-        active mode (the default)."""
-        return self.passive
-
-    def set_passive(self, passive, now):
-        """Configures this FSM for active or passive mode.  In active mode (the
-        default), the FSM is attempting to connect to a remote host.  In
-        passive mode, the FSM is listening for connections from a remote
-        host."""
-        if self.passive != passive:
-            self.passive = passive
-
-            if ((passive and self.state in (Reconnect.ConnectInProgress,
-                                            Reconnect.Reconnect)) or
-                (not passive and self.state == Reconnect.Listening
-                 and self.__may_retry())):
-                self._transition(now, Reconnect.Backoff)
-                self.backoff = 0
-
-    def is_enabled(self):
-        """Returns true if this FSM has been enabled with self.enable().
-        Calling another function that indicates a change in connection state,
-        such as self.disconnected() or self.force_reconnect(), will also enable
-        a reconnect FSM."""
-        return self.state != Reconnect.Void
-
-    def enable(self, now):
-        """If this FSM is disabled (the default for newly created FSMs),
-        enables it, so that the next call to reconnect_run() for 'fsm' will
-        return ovs.reconnect.CONNECT.
-
-        If this FSM is not disabled, this function has no effect."""
-        if self.state == Reconnect.Void and self.__may_retry():
-            self._transition(now, Reconnect.Backoff)
-            self.backoff = 0
-
-    def disable(self, now):
-        """Disables this FSM.  Until 'fsm' is enabled again, self.run() will
-        always return 0."""
-        if self.state != Reconnect.Void:
-            self._transition(now, Reconnect.Void)
-
-    def force_reconnect(self, now):
-        """If this FSM is enabled and currently connected (or attempting to
-        connect), forces self.run() to return ovs.reconnect.DISCONNECT the next
-        time it is called, which should cause the client to drop the connection
-        (or attempt), back off, and then reconnect."""
-        if self.state in (Reconnect.ConnectInProgress,
-                          Reconnect.Active,
-                          Reconnect.Idle):
-            self._transition(now, Reconnect.Reconnect)
-
-    def disconnected(self, now, error):
-        """Tell this FSM that the connection dropped or that a connection
-        attempt failed.  'error' specifies the reason: a positive value
-        represents an errno value, EOF indicates that the connection was closed
-        by the peer (e.g. read() returned 0), and 0 indicates no specific
-        error.
-
-        The FSM will back off, then reconnect."""
-        if self.state not in (Reconnect.Backoff, Reconnect.Void):
-            # Report what happened
-            if self.state in (Reconnect.Active, Reconnect.Idle):
-                if error > 0:
-                    vlog.warn("%s: connection dropped (%s)"
-                              % (self.name, os.strerror(error)))
-                elif error == EOF:
-                    self.info_level("%s: connection closed by peer"
-                                    % self.name)
-                else:
-                    self.info_level("%s: connection dropped" % self.name)
-            elif self.state == Reconnect.Listening:
-                if error > 0:
-                    vlog.warn("%s: error listening for connections (%s)"
-                              % (self.name, os.strerror(error)))
-                else:
-                    self.info_level("%s: error listening for connections"
-                                    % self.name)
-            elif self.state == Reconnect.Reconnect:
-                self.info_level("%s: connection closed by client"
-                                % self.name)
-            elif self.backoff < self.max_backoff:
-                if self.passive:
-                    type_ = "listen"
-                else:
-                    type_ = "connection"
-                if error > 0:
-                    vlog.warn("%s: %s attempt failed (%s)"
-                              % (self.name, type_, os.strerror(error)))
-                else:
-                    self.info_level("%s: %s attempt timed out"
-                                    % (self.name, type_))
-
-            if (self.state in (Reconnect.Active, Reconnect.Idle)):
-                self.last_disconnected = now
-
-            if not self.__may_retry():
-                self._transition(now, Reconnect.Void)
-                return
-
-            # Back off
-            if self.backoff_free_tries > 1:
-                self.backoff_free_tries -= 1
-                self.backoff = 0
-            elif (self.state in (Reconnect.Active, Reconnect.Idle) and
-                (self.last_activity - self.last_connected >= self.backoff or
-                 self.passive)):
-                if self.passive:
-                    self.backoff = 0
-                else:
-                    self.backoff = self.min_backoff
-            else:
-                if self.backoff < self.min_backoff:
-                    self.backoff = self.min_backoff
-                elif self.backoff < self.max_backoff / 2:
-                    self.backoff *= 2
-                    if self.passive:
-                        action = "trying to listen again"
-                    else:
-                        action = "reconnect"
-                    self.info_level("%s: waiting %.3g seconds before %s"
-                                    % (self.name, self.backoff / 1000.0,
-                                       action))
-                else:
-                    if self.backoff < self.max_backoff:
-                        if self.passive:
-                            action = "try to listen"
-                        else:
-                            action = "reconnect"
-                        self.info_level("%s: continuing to %s in the "
-                                        "background but suppressing further "
-                                        "logging" % (self.name, action))
-                    self.backoff = self.max_backoff
-            self._transition(now, Reconnect.Backoff)
-
-    def connecting(self, now):
-        """Tell this FSM that a connection or listening attempt is in progress.
-
-        The FSM will start a timer, after which the connection or listening
-        attempt will be aborted (by returning ovs.reconnect.DISCONNECT from
-        self.run())."""
-        if self.state != Reconnect.ConnectInProgress:
-            if self.passive:
-                self.info_level("%s: listening..." % self.name)
-            elif self.backoff < self.max_backoff:
-                self.info_level("%s: connecting..." % self.name)
-            self._transition(now, Reconnect.ConnectInProgress)
-
-    def listening(self, now):
-        """Tell this FSM that the client is listening for connection attempts.
-        This state last indefinitely until the client reports some change.
-
-        The natural progression from this state is for the client to report
-        that a connection has been accepted or is in progress of being
-        accepted, by calling self.connecting() or self.connected().
-
-        The client may also report that listening failed (e.g. accept()
-        returned an unexpected error such as ENOMEM) by calling
-        self.listen_error(), in which case the FSM will back off and eventually
-        return ovs.reconnect.CONNECT from self.run() to tell the client to try
-        listening again."""
-        if self.state != Reconnect.Listening:
-            self.info_level("%s: listening..." % self.name)
-            self._transition(now, Reconnect.Listening)
-
-    def listen_error(self, now, error):
-        """Tell this FSM that the client's attempt to accept a connection
-        failed (e.g. accept() returned an unexpected error such as ENOMEM).
-
-        If the FSM is currently listening (self.listening() was called), it
-        will back off and eventually return ovs.reconnect.CONNECT from
-        self.run() to tell the client to try listening again.  If there is an
-        active connection, this will be delayed until that connection drops."""
-        if self.state == Reconnect.Listening:
-            self.disconnected(now, error)
-
-    def connected(self, now):
-        """Tell this FSM that the connection was successful.
-
-        The FSM will start the probe interval timer, which is reset by
-        self.activity().  If the timer expires, a probe will be sent (by
-        returning ovs.reconnect.PROBE from self.run().  If the timer expires
-        again without being reset, the connection will be aborted (by returning
-        ovs.reconnect.DISCONNECT from self.run()."""
-        if not self.state.is_connected:
-            self.connecting(now)
-
-            self.info_level("%s: connected" % self.name)
-            self._transition(now, Reconnect.Active)
-            self.last_connected = now
-
-    def connect_failed(self, now, error):
-        """Tell this FSM that the connection attempt failed.
-
-        The FSM will back off and attempt to reconnect."""
-        self.connecting(now)
-        self.disconnected(now, error)
-
-    def activity(self, now):
-        """Tell this FSM that some activity occurred on the connection.  This
-        resets the probe interval timer, so that the connection is known not to
-        be idle."""
-        if self.state != Reconnect.Active:
-            self._transition(now, Reconnect.Active)
-        self.last_activity = now
-
-    def _transition(self, now, state):
-        if self.state == Reconnect.ConnectInProgress:
-            self.n_attempted_connections += 1
-            if state == Reconnect.Active:
-                self.n_successful_connections += 1
-
-        connected_before = self.state.is_connected
-        connected_now = state.is_connected
-        if connected_before != connected_now:
-            if connected_before:
-                self.total_connected_duration += now - self.last_connected
-            self.seqno += 1
-
-        vlog.dbg("%s: entering %s" % (self.name, state.name))
-        self.state = state
-        self.state_entered = now
-
-    def run(self, now):
-        """Assesses whether any action should be taken on this FSM.  The return
-        value is one of:
-
-            - None: The client need not take any action.
-
-            - Active client, ovs.reconnect.CONNECT: The client should start a
-              connection attempt and indicate this by calling
-              self.connecting().  If the connection attempt has definitely
-              succeeded, it should call self.connected().  If the connection
-              attempt has definitely failed, it should call
-              self.connect_failed().
-
-              The FSM is smart enough to back off correctly after successful
-              connections that quickly abort, so it is OK to call
-              self.connected() after a low-level successful connection
-              (e.g. connect()) even if the connection might soon abort due to a
-              failure at a high-level (e.g. SSL negotiation failure).
-
-            - Passive client, ovs.reconnect.CONNECT: The client should try to
-              listen for a connection, if it is not already listening.  It
-              should call self.listening() if successful, otherwise
-              self.connecting() or reconnected_connect_failed() if the attempt
-              is in progress or definitely failed, respectively.
-
-              A listening passive client should constantly attempt to accept a
-              new connection and report an accepted connection with
-              self.connected().
-
-            - ovs.reconnect.DISCONNECT: The client should abort the current
-              connection or connection attempt or listen attempt and call
-              self.disconnected() or self.connect_failed() to indicate it.
-
-            - ovs.reconnect.PROBE: The client should send some kind of request
-              to the peer that will elicit a response, to ensure that the
-              connection is indeed in working order.  (This will only be
-              returned if the "probe interval" is nonzero--see
-              self.set_probe_interval())."""
-
-        deadline = self.state.deadline(self)
-        if deadline is not None and now >= deadline:
-            return self.state.run(self, now)
-        else:
-            return None
-
-    def wait(self, poller, now):
-        """Causes the next call to poller.block() to wake up when self.run()
-        should be called."""
-        timeout = self.timeout(now)
-        if timeout is not None and timeout >= 0:
-            poller.timer_wait(timeout)
-
-    def timeout(self, now):
-        """Returns the number of milliseconds after which self.run() should be
-        called if nothing else notable happens in the meantime, or None if this
-        is currently unnecessary."""
-        deadline = self.state.deadline(self)
-        if deadline is not None:
-            remaining = deadline - now
-            return max(0, remaining)
-        else:
-            return None
-
-    def is_connected(self):
-        """Returns True if this FSM is currently believed to be connected, that
-        is, if self.connected() was called more recently than any call to
-        self.connect_failed() or self.disconnected() or self.disable(), and
-        False otherwise."""
-        return self.state.is_connected
-
-    def get_last_connect_elapsed(self, now):
-        """Returns the number of milliseconds since 'fsm' was last connected
-        to its peer. Returns None if never connected."""
-        if self.last_connected:
-            return now - self.last_connected
-        else:
-            return None
-
-    def get_last_disconnect_elapsed(self, now):
-        """Returns the number of milliseconds since 'fsm' was last disconnected
-        from its peer. Returns None if never disconnected."""
-        if self.last_disconnected:
-            return now - self.last_disconnected
-        else:
-            return None
-
-    def get_stats(self, now):
-        class Stats(object):
-            pass
-        stats = Stats()
-        stats.creation_time = self.creation_time
-        stats.last_connected = self.last_connected
-        stats.last_disconnected = self.last_disconnected
-        stats.last_activity = self.last_activity
-        stats.backoff = self.backoff
-        stats.seqno = self.seqno
-        stats.is_connected = self.is_connected()
-        stats.msec_since_connect = self.get_last_connect_elapsed(now)
-        stats.msec_since_disconnect = self.get_last_disconnect_elapsed(now)
-        stats.total_connected_duration = self.total_connected_duration
-        if self.is_connected():
-            stats.total_connected_duration += (
-                    self.get_last_connect_elapsed(now))
-        stats.n_attempted_connections = self.n_attempted_connections
-        stats.n_successful_connections = self.n_successful_connections
-        stats.state = self.state.name
-        stats.state_elapsed = now - self.state_entered
-        return stats
-
-    def __may_retry(self):
-        if self.max_tries is None:
-            return True
-        elif self.max_tries > 0:
-            self.max_tries -= 1
-            return True
-        else:
-            return False
diff --git a/python/ovs/socket_util.py b/python/ovs/socket_util.py
deleted file mode 100644
index 8f9d31825..000000000
--- a/python/ovs/socket_util.py
+++ /dev/null
@@ -1,335 +0,0 @@ 
-# Copyright (c) 2010, 2012, 2014, 2015 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import errno
-import os
-import os.path
-import random
-import socket
-import sys
-
-import ovs.fatal_signal
-import ovs.poller
-import ovs.vlog
-
-import six
-from six.moves import range
-
-if sys.platform == 'win32':
-    import ovs.winutils as winutils
-    import win32file
-
-vlog = ovs.vlog.Vlog("socket_util")
-
-
-def make_short_name(long_name):
-    if long_name is None:
-        return None
-    long_name = os.path.abspath(long_name)
-    long_dirname = os.path.dirname(long_name)
-    tmpdir = os.getenv('TMPDIR', '/tmp')
-    for x in range(0, 1000):
-        link_name = \
-            '%s/ovs-un-py-%d-%d' % (tmpdir, random.randint(0, 10000), x)
-        try:
-            os.symlink(long_dirname, link_name)
-            ovs.fatal_signal.add_file_to_unlink(link_name)
-            return os.path.join(link_name, os.path.basename(long_name))
-        except OSError as e:
-            if e.errno != errno.EEXIST:
-                break
-    raise Exception("Failed to create temporary symlink")
-
-
-def free_short_name(short_name):
-    if short_name is None:
-        return
-    link_name = os.path.dirname(short_name)
-    ovs.fatal_signal.unlink_file_now(link_name)
-
-
-def make_unix_socket(style, nonblock, bind_path, connect_path, short=False):
-    """Creates a Unix domain socket in the given 'style' (either
-    socket.SOCK_DGRAM or socket.SOCK_STREAM) that is bound to 'bind_path' (if
-    'bind_path' is not None) and connected to 'connect_path' (if 'connect_path'
-    is not None).  If 'nonblock' is true, the socket is made non-blocking.
-
-    Returns (error, socket): on success 'error' is 0 and 'socket' is a new
-    socket object, on failure 'error' is a positive errno value and 'socket' is
-    None."""
-
-    try:
-        sock = socket.socket(socket.AF_UNIX, style)
-    except socket.error as e:
-        return get_exception_errno(e), None
-
-    try:
-        if nonblock:
-            set_nonblocking(sock)
-        if bind_path is not None:
-            # Delete bind_path but ignore ENOENT.
-            try:
-                os.unlink(bind_path)
-            except OSError as e:
-                if e.errno != errno.ENOENT:
-                    return e.errno, None
-
-            ovs.fatal_signal.add_file_to_unlink(bind_path)
-            sock.bind(bind_path)
-
-            try:
-                os.fchmod(sock.fileno(), 0o700)
-            except OSError:
-                pass
-        if connect_path is not None:
-            try:
-                sock.connect(connect_path)
-            except socket.error as e:
-                if get_exception_errno(e) != errno.EINPROGRESS:
-                    raise
-        return 0, sock
-    except socket.error as e:
-        sock.close()
-        if (bind_path is not None and
-            os.path.exists(bind_path)):
-            ovs.fatal_signal.unlink_file_now(bind_path)
-        eno = ovs.socket_util.get_exception_errno(e)
-        if (eno == "AF_UNIX path too long" and
-            os.uname()[0] == "Linux"):
-            short_connect_path = None
-            short_bind_path = None
-            connect_dirfd = None
-            bind_dirfd = None
-            # Try workaround using /proc/self/fd
-            if connect_path is not None:
-                dirname = os.path.dirname(connect_path)
-                basename = os.path.basename(connect_path)
-                try:
-                    connect_dirfd = os.open(dirname,
-                                            os.O_DIRECTORY | os.O_RDONLY)
-                except OSError as err:
-                    return get_exception_errno(err), None
-                short_connect_path = "/proc/self/fd/%d/%s" % (connect_dirfd,
-                                                              basename)
-
-            if bind_path is not None:
-                dirname = os.path.dirname(bind_path)
-                basename = os.path.basename(bind_path)
-                try:
-                    bind_dirfd = os.open(dirname, os.O_DIRECTORY | os.O_RDONLY)
-                except OSError as err:
-                    return get_exception_errno(err), None
-                short_bind_path = "/proc/self/fd/%d/%s" % (bind_dirfd,
-                                                           basename)
-
-            try:
-                return make_unix_socket(style, nonblock, short_bind_path,
-                                        short_connect_path)
-            finally:
-                if connect_dirfd is not None:
-                    os.close(connect_dirfd)
-                if bind_dirfd is not None:
-                    os.close(bind_dirfd)
-        elif (eno == "AF_UNIX path too long"):
-            if short:
-                return get_exception_errno(e), None
-            short_bind_path = None
-            try:
-                short_bind_path = make_short_name(bind_path)
-                short_connect_path = make_short_name(connect_path)
-            except:
-                free_short_name(short_bind_path)
-                return errno.ENAMETOOLONG, None
-            try:
-                return make_unix_socket(style, nonblock, short_bind_path,
-                                        short_connect_path, short=True)
-            finally:
-                free_short_name(short_bind_path)
-                free_short_name(short_connect_path)
-        else:
-            return get_exception_errno(e), None
-
-
-def check_connection_completion(sock):
-    if sys.platform == "win32":
-        p = ovs.poller.SelectPoll()
-        event = winutils.get_new_event(None, False, True, None)
-        # Receive notification of readiness for writing, of completed
-        # connection or multipoint join operation, and of socket closure.
-        win32file.WSAEventSelect(sock, event,
-                                 win32file.FD_WRITE |
-                                 win32file.FD_CONNECT |
-                                 win32file.FD_CLOSE)
-        p.register(event, ovs.poller.POLLOUT)
-    else:
-        p = ovs.poller.get_system_poll()
-        p.register(sock, ovs.poller.POLLOUT)
-    pfds = p.poll(0)
-    if len(pfds) == 1:
-        revents = pfds[0][1]
-        if revents & ovs.poller.POLLERR or revents & ovs.poller.POLLHUP:
-            try:
-                # The following should raise an exception.
-                sock.send("\0".encode(), socket.MSG_DONTWAIT)
-
-                # (Here's where we end up if it didn't.)
-                # XXX rate-limit
-                vlog.err("poll return POLLERR but send succeeded")
-                return errno.EPROTO
-            except socket.error as e:
-                return get_exception_errno(e)
-        else:
-            return 0
-    else:
-        return errno.EAGAIN
-
-
-def is_valid_ipv4_address(address):
-    try:
-        socket.inet_pton(socket.AF_INET, address)
-    except AttributeError:
-        try:
-            socket.inet_aton(address)
-        except socket.error:
-            return False
-    except socket.error:
-        return False
-
-    return True
-
-
-def inet_parse_active(target, default_port):
-    address = target.split(":")
-    if len(address) >= 2:
-        host_name = ":".join(address[0:-1]).lstrip('[').rstrip(']')
-        port = int(address[-1])
-    else:
-        if default_port:
-            port = default_port
-        else:
-            raise ValueError("%s: port number must be specified" % target)
-        host_name = address[0]
-    if not host_name:
-        raise ValueError("%s: bad peer name format" % target)
-    return (host_name, port)
-
-
-def inet_open_active(style, target, default_port, dscp):
-    address = inet_parse_active(target, default_port)
-    try:
-        is_addr_inet = is_valid_ipv4_address(address[0])
-        if is_addr_inet:
-            sock = socket.socket(socket.AF_INET, style, 0)
-            family = socket.AF_INET
-        else:
-            sock = socket.socket(socket.AF_INET6, style, 0)
-            family = socket.AF_INET6
-    except socket.error as e:
-        return get_exception_errno(e), None
-
-    try:
-        set_nonblocking(sock)
-        set_dscp(sock, family, dscp)
-        try:
-            sock.connect(address)
-        except socket.error as e:
-            error = get_exception_errno(e)
-            if sys.platform == 'win32' and error == errno.WSAEWOULDBLOCK:
-                # WSAEWOULDBLOCK would be the equivalent on Windows
-                # for EINPROGRESS on Unix.
-                error = errno.EINPROGRESS
-            if error != errno.EINPROGRESS:
-                raise
-        return 0, sock
-    except socket.error as e:
-        sock.close()
-        return get_exception_errno(e), None
-
-
-def get_exception_errno(e):
-    """A lot of methods on Python socket objects raise socket.error, but that
-    exception is documented as having two completely different forms of
-    arguments: either a string or a (errno, string) tuple.  We only want the
-    errno."""
-    if isinstance(e.args, tuple):
-        return e.args[0]
-    else:
-        return errno.EPROTO
-
-
-null_fd = -1
-
-
-def get_null_fd():
-    """Returns a readable and writable fd for /dev/null, if successful,
-    otherwise a negative errno value.  The caller must not close the returned
-    fd (because the same fd will be handed out to subsequent callers)."""
-    global null_fd
-    if null_fd < 0:
-        try:
-            # os.devnull ensures compatibility with Windows, returns
-            # '/dev/null' for Unix and 'nul' for Windows
-            null_fd = os.open(os.devnull, os.O_RDWR)
-        except OSError as e:
-            vlog.err("could not open %s: %s" % (os.devnull,
-                                                os.strerror(e.errno)))
-            return -e.errno
-    return null_fd
-
-
-def write_fully(fd, buf):
-    """Returns an (error, bytes_written) tuple where 'error' is 0 on success,
-    otherwise a positive errno value, and 'bytes_written' is the number of
-    bytes that were written before the error occurred.  'error' is 0 if and
-    only if 'bytes_written' is len(buf)."""
-    bytes_written = 0
-    if len(buf) == 0:
-        return 0, 0
-    if six.PY3 and not isinstance(buf, six.binary_type):
-        buf = six.binary_type(buf, 'utf-8')
-    while True:
-        try:
-            retval = os.write(fd, buf)
-            assert retval >= 0
-            if retval == len(buf):
-                return 0, bytes_written + len(buf)
-            elif retval == 0:
-                vlog.warn("write returned 0")
-                return errno.EPROTO, bytes_written
-            else:
-                bytes_written += retval
-                buf = buf[:retval]
-        except OSError as e:
-            return e.errno, bytes_written
-
-
-def set_nonblocking(sock):
-    try:
-        sock.setblocking(0)
-    except socket.error as e:
-        vlog.err("could not set nonblocking mode on socket: %s"
-                 % os.strerror(get_exception_errno(e)))
-
-
-def set_dscp(sock, family, dscp):
-    if dscp > 63:
-        raise ValueError("Invalid dscp %d" % dscp)
-
-    val = dscp << 2
-    if family == socket.AF_INET:
-        sock.setsockopt(socket.IPPROTO_IP, socket.IP_TOS, val)
-    elif family == socket.AF_INET6:
-        sock.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_TCLASS, val)
-    else:
-        raise ValueError('Invalid family %d' % family)
diff --git a/python/ovs/stream.py b/python/ovs/stream.py
deleted file mode 100644
index c15be4b3e..000000000
--- a/python/ovs/stream.py
+++ /dev/null
@@ -1,831 +0,0 @@ 
-# Copyright (c) 2010, 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import errno
-import os
-import socket
-import sys
-
-import ovs.poller
-import ovs.socket_util
-import ovs.vlog
-
-import six
-
-try:
-    from OpenSSL import SSL
-except ImportError:
-    SSL = None
-
-if sys.platform == 'win32':
-    import ovs.winutils as winutils
-    import pywintypes
-    import win32event
-    import win32file
-    import win32pipe
-
-vlog = ovs.vlog.Vlog("stream")
-
-
-def stream_or_pstream_needs_probes(name):
-    """ True if the stream or pstream specified by 'name' needs periodic probes
-    to verify connectivity.  For [p]streams which need probes, it can take a
-    long time to notice the connection was dropped.  Returns False if probes
-    aren't needed, and None if 'name' is invalid"""
-
-    cls = Stream._find_method(name)
-    if cls:
-        return cls.needs_probes()
-    elif PassiveStream.is_valid_name(name):
-        return PassiveStream.needs_probes(name)
-    else:
-        return None
-
-
-class Stream(object):
-    """Bidirectional byte stream.  Unix domain sockets, tcp and ssl
-    are implemented."""
-
-    # States.
-    __S_CONNECTING = 0
-    __S_CONNECTED = 1
-    __S_DISCONNECTED = 2
-
-    # Kinds of events that one might wait for.
-    W_CONNECT = 0               # Connect complete (success or failure).
-    W_RECV = 1                  # Data received.
-    W_SEND = 2                  # Send buffer room available.
-
-    _SOCKET_METHODS = {}
-
-    _SSL_private_key_file = None
-    _SSL_certificate_file = None
-    _SSL_ca_cert_file = None
-
-    # Windows only
-    _write = None                # overlapped for write operation
-    _read = None                 # overlapped for read operation
-    _write_pending = False
-    _read_pending = False
-    _retry_connect = False
-
-    @staticmethod
-    def register_method(method, cls):
-        Stream._SOCKET_METHODS[method + ":"] = cls
-
-    @staticmethod
-    def _find_method(name):
-        for method, cls in six.iteritems(Stream._SOCKET_METHODS):
-            if name.startswith(method):
-                return cls
-        return None
-
-    @staticmethod
-    def is_valid_name(name):
-        """Returns True if 'name' is a stream name in the form "TYPE:ARGS" and
-        TYPE is a supported stream type ("unix:", "tcp:" and "ssl:"),
-        otherwise False."""
-        return bool(Stream._find_method(name))
-
-    def __init__(self, socket, name, status, pipe=None, is_server=False):
-        self.socket = socket
-        self.pipe = pipe
-        if sys.platform == 'win32':
-            if pipe is not None:
-                # Flag to check if fd is a server HANDLE.  In the case of a
-                # server handle we have to issue a disconnect before closing
-                # the actual handle.
-                self._server = is_server
-                suffix = name.split(":", 1)[1]
-                suffix = ovs.util.abs_file_name(ovs.dirs.RUNDIR, suffix)
-                self._pipename = winutils.get_pipe_name(suffix)
-                self._read = pywintypes.OVERLAPPED()
-                self._read.hEvent = winutils.get_new_event()
-                self._write = pywintypes.OVERLAPPED()
-                self._write.hEvent = winutils.get_new_event()
-            else:
-                self._wevent = winutils.get_new_event(bManualReset=False,
-                                                      bInitialState=False)
-
-        self.name = name
-        if status == errno.EAGAIN:
-            self.state = Stream.__S_CONNECTING
-        elif status == 0:
-            self.state = Stream.__S_CONNECTED
-        else:
-            self.state = Stream.__S_DISCONNECTED
-
-        self.error = 0
-
-    # Default value of dscp bits for connection between controller and manager.
-    # Value of IPTOS_PREC_INTERNETCONTROL = 0xc0 which is defined
-    # in <netinet/ip.h> is used.
-    IPTOS_PREC_INTERNETCONTROL = 0xc0
-    DSCP_DEFAULT = IPTOS_PREC_INTERNETCONTROL >> 2
-
-    @staticmethod
-    def open(name, dscp=DSCP_DEFAULT):
-        """Attempts to connect a stream to a remote peer.  'name' is a
-        connection name in the form "TYPE:ARGS", where TYPE is an active stream
-        class's name and ARGS are stream class-specific.  The supported TYPEs
-        include "unix", "tcp", and "ssl".
-
-        Returns (error, stream): on success 'error' is 0 and 'stream' is the
-        new Stream, on failure 'error' is a positive errno value and 'stream'
-        is None.
-
-        Never returns errno.EAGAIN or errno.EINPROGRESS.  Instead, returns 0
-        and a new Stream.  The connect() method can be used to check for
-        successful connection completion."""
-        cls = Stream._find_method(name)
-        if not cls:
-            return errno.EAFNOSUPPORT, None
-
-        suffix = name.split(":", 1)[1]
-        if name.startswith("unix:"):
-            suffix = ovs.util.abs_file_name(ovs.dirs.RUNDIR, suffix)
-            if sys.platform == 'win32':
-                pipename = winutils.get_pipe_name(suffix)
-
-                if len(suffix) > 255:
-                    # Return invalid argument if the name is too long
-                    return errno.ENOENT, None
-
-                try:
-                    # In case of "unix:" argument, the assumption is that
-                    # there is a file created in the path (suffix).
-                    open(suffix, 'r').close()
-                except:
-                    return errno.ENOENT, None
-
-                try:
-                    npipe = winutils.create_file(pipename)
-                    try:
-                        winutils.set_pipe_mode(npipe,
-                                               win32pipe.PIPE_READMODE_BYTE)
-                    except pywintypes.error:
-                        return errno.ENOENT, None
-                except pywintypes.error as e:
-                    if e.winerror == winutils.winerror.ERROR_PIPE_BUSY:
-                        # Pipe is busy, set the retry flag to true and retry
-                        # again during the connect function.
-                        Stream.retry_connect = True
-                        return 0, cls(None, name, errno.EAGAIN,
-                                      pipe=win32file.INVALID_HANDLE_VALUE,
-                                      is_server=False)
-                    return errno.ENOENT, None
-                return 0, cls(None, name, 0, pipe=npipe, is_server=False)
-
-        error, sock = cls._open(suffix, dscp)
-        if error:
-            return error, None
-        else:
-            err = ovs.socket_util.check_connection_completion(sock)
-            if err == errno.EAGAIN or err == errno.EINPROGRESS:
-                status = errno.EAGAIN
-                err = 0
-            elif err == 0:
-                status = 0
-            else:
-                status = err
-            return err, cls(sock, name, status)
-
-    @staticmethod
-    def _open(suffix, dscp):
-        raise NotImplementedError("This method must be overrided by subclass")
-
-    @staticmethod
-    def open_block(error_stream, timeout=None):
-        """Blocks until a Stream completes its connection attempt, either
-        succeeding or failing, but no more than 'timeout' milliseconds.
-        (error, stream) should be the tuple returned by Stream.open().
-        Negative value of 'timeout' means infinite waiting.
-        Returns a tuple of the same form.
-
-        Typical usage:
-        error, stream = Stream.open_block(Stream.open("unix:/tmp/socket"))"""
-
-        # Py3 doesn't support tuple parameter unpacking - PEP 3113
-        error, stream = error_stream
-        if not error:
-            deadline = None
-            if timeout is not None and timeout >= 0:
-                deadline = ovs.timeval.msec() + timeout
-            while True:
-                error = stream.connect()
-                if sys.platform == 'win32' and error == errno.WSAEWOULDBLOCK:
-                    # WSAEWOULDBLOCK would be the equivalent on Windows
-                    # for EAGAIN on Unix.
-                    error = errno.EAGAIN
-                if error != errno.EAGAIN:
-                    break
-                if deadline is not None and ovs.timeval.msec() > deadline:
-                    error = errno.ETIMEDOUT
-                    break
-                stream.run()
-                poller = ovs.poller.Poller()
-                stream.run_wait(poller)
-                stream.connect_wait(poller)
-                if deadline is not None:
-                    poller.timer_wait_until(deadline)
-                poller.block()
-            if stream.socket is not None:
-                assert error != errno.EINPROGRESS
-
-        if error and stream:
-            stream.close()
-            stream = None
-        return error, stream
-
-    def close(self):
-        if self.socket is not None:
-            self.socket.close()
-        if self.pipe is not None:
-            if self._server:
-                # Flush the pipe to allow the client to read the pipe
-                # before disconnecting.
-                win32pipe.FlushFileBuffers(self.pipe)
-                win32pipe.DisconnectNamedPipe(self.pipe)
-            winutils.close_handle(self.pipe, vlog.warn)
-            winutils.close_handle(self._read.hEvent, vlog.warn)
-            winutils.close_handle(self._write.hEvent, vlog.warn)
-
-    def __scs_connecting(self):
-        if self.socket is not None:
-            retval = ovs.socket_util.check_connection_completion(self.socket)
-            assert retval != errno.EINPROGRESS
-        elif sys.platform == 'win32':
-            if self.retry_connect:
-                try:
-                    self.pipe = winutils.create_file(self._pipename)
-                    self._retry_connect = False
-                    retval = 0
-                except pywintypes.error as e:
-                    if e.winerror == winutils.winerror.ERROR_PIPE_BUSY:
-                        retval = errno.EAGAIN
-                    else:
-                        self._retry_connect = False
-                        retval = errno.ENOENT
-            else:
-                # If retry_connect is false, it means it's already
-                # connected so we can set the value of retval to 0
-                retval = 0
-
-        if retval == 0:
-            self.state = Stream.__S_CONNECTED
-        elif retval != errno.EAGAIN:
-            self.state = Stream.__S_DISCONNECTED
-            self.error = retval
-
-    def connect(self):
-        """Tries to complete the connection on this stream.  If the connection
-        is complete, returns 0 if the connection was successful or a positive
-        errno value if it failed.  If the connection is still in progress,
-        returns errno.EAGAIN."""
-
-        if self.state == Stream.__S_CONNECTING:
-            self.__scs_connecting()
-
-        if self.state == Stream.__S_CONNECTING:
-            return errno.EAGAIN
-        elif self.state == Stream.__S_CONNECTED:
-            return 0
-        else:
-            assert self.state == Stream.__S_DISCONNECTED
-            return self.error
-
-    def recv(self, n):
-        """Tries to receive up to 'n' bytes from this stream.  Returns a
-        (error, string) tuple:
-
-            - If successful, 'error' is zero and 'string' contains between 1
-              and 'n' bytes of data.
-
-            - On error, 'error' is a positive errno value.
-
-            - If the connection has been closed in the normal fashion or if 'n'
-              is 0, the tuple is (0, "").
-
-        The recv function will not block waiting for data to arrive.  If no
-        data have been received, it returns (errno.EAGAIN, "") immediately."""
-
-        retval = self.connect()
-        if retval != 0:
-            return (retval, "")
-        elif n == 0:
-            return (0, "")
-
-        if sys.platform == 'win32' and self.socket is None:
-            return self.__recv_windows(n)
-
-        try:
-            return (0, self.socket.recv(n))
-        except socket.error as e:
-            return (ovs.socket_util.get_exception_errno(e), "")
-
-    def __recv_windows(self, n):
-        if self._read_pending:
-            try:
-                nBytesRead = winutils.get_overlapped_result(self.pipe,
-                                                            self._read,
-                                                            False)
-                self._read_pending = False
-            except pywintypes.error as e:
-                if e.winerror == winutils.winerror.ERROR_IO_INCOMPLETE:
-                    # The operation is still pending, try again
-                    self._read_pending = True
-                    return (errno.EAGAIN, "")
-                elif e.winerror in winutils.pipe_disconnected_errors:
-                    # If the pipe was disconnected, return 0.
-                    return (0, "")
-                else:
-                    return (errno.EINVAL, "")
-        else:
-            (errCode, self._read_buffer) = winutils.read_file(self.pipe,
-                                                              n,
-                                                              self._read)
-            if errCode:
-                if errCode == winutils.winerror.ERROR_IO_PENDING:
-                    self._read_pending = True
-                    return (errno.EAGAIN, "")
-                elif errCode in winutils.pipe_disconnected_errors:
-                    # If the pipe was disconnected, return 0.
-                    return (0, "")
-                else:
-                    return (errCode, "")
-
-            try:
-                nBytesRead = winutils.get_overlapped_result(self.pipe,
-                                                            self._read,
-                                                            False)
-                winutils.win32event.SetEvent(self._read.hEvent)
-            except pywintypes.error as e:
-                if e.winerror in winutils.pipe_disconnected_errors:
-                    # If the pipe was disconnected, return 0.
-                    return (0, "")
-                else:
-                    return (e.winerror, "")
-
-        recvBuffer = self._read_buffer[:nBytesRead]
-        # recvBuffer will have the type memoryview in Python3.
-        # We can use bytes to convert it to type bytes which works on
-        # both Python2 and Python3.
-        return (0, bytes(recvBuffer))
-
-    def send(self, buf):
-        """Tries to send 'buf' on this stream.
-
-        If successful, returns the number of bytes sent, between 1 and
-        len(buf).  0 is only a valid return value if len(buf) is 0.
-
-        On error, returns a negative errno value.
-
-        Will not block.  If no bytes can be immediately accepted for
-        transmission, returns -errno.EAGAIN immediately."""
-
-        retval = self.connect()
-        if retval != 0:
-            return -retval
-        elif len(buf) == 0:
-            return 0
-
-        # We must have bytes for sending.
-        if isinstance(buf, six.text_type):
-            buf = buf.encode('utf-8')
-
-        if sys.platform == 'win32' and self.socket is None:
-            return self.__send_windows(buf)
-
-        try:
-            return self.socket.send(buf)
-        except socket.error as e:
-            return -ovs.socket_util.get_exception_errno(e)
-
-    def __send_windows(self, buf):
-        if self._write_pending:
-            try:
-                nBytesWritten = winutils.get_overlapped_result(self.pipe,
-                                                               self._write,
-                                                               False)
-                self._write_pending = False
-            except pywintypes.error as e:
-                if e.winerror == winutils.winerror.ERROR_IO_INCOMPLETE:
-                    # The operation is still pending, try again
-                    self._read_pending = True
-                    return -errno.EAGAIN
-                elif e.winerror in winutils.pipe_disconnected_errors:
-                    # If the pipe was disconnected, return connection reset.
-                    return -errno.ECONNRESET
-                else:
-                    return -errno.EINVAL
-        else:
-            (errCode, nBytesWritten) = winutils.write_file(self.pipe,
-                                                           buf,
-                                                           self._write)
-            if errCode:
-                if errCode == winutils.winerror.ERROR_IO_PENDING:
-                    self._write_pending = True
-                    return -errno.EAGAIN
-                if (not nBytesWritten and
-                        errCode in winutils.pipe_disconnected_errors):
-                    # If the pipe was disconnected, return connection reset.
-                    return -errno.ECONNRESET
-        return nBytesWritten
-
-    def run(self):
-        pass
-
-    def run_wait(self, poller):
-        pass
-
-    def wait(self, poller, wait):
-        assert wait in (Stream.W_CONNECT, Stream.W_RECV, Stream.W_SEND)
-
-        if self.state == Stream.__S_DISCONNECTED:
-            poller.immediate_wake()
-            return
-
-        if self.state == Stream.__S_CONNECTING:
-            wait = Stream.W_CONNECT
-
-        if sys.platform == 'win32':
-            self.__wait_windows(poller, wait)
-            return
-
-        if wait == Stream.W_RECV:
-            poller.fd_wait(self.socket, ovs.poller.POLLIN)
-        else:
-            poller.fd_wait(self.socket, ovs.poller.POLLOUT)
-
-    def __wait_windows(self, poller, wait):
-        if self.socket is not None:
-            if wait == Stream.W_RECV:
-                mask = (win32file.FD_READ |
-                        win32file.FD_ACCEPT |
-                        win32file.FD_CLOSE)
-                event = ovs.poller.POLLIN
-            else:
-                mask = (win32file.FD_WRITE |
-                        win32file.FD_CONNECT |
-                        win32file.FD_CLOSE)
-                event = ovs.poller.POLLOUT
-
-            try:
-                win32file.WSAEventSelect(self.socket,
-                                         self._wevent,
-                                         mask)
-            except pywintypes.error as e:
-                vlog.err("failed to associate events with socket: %s"
-                         % e.strerror)
-            poller.fd_wait(self._wevent, event)
-        else:
-            if wait == Stream.W_RECV:
-                if self._read:
-                    poller.fd_wait(self._read.hEvent, ovs.poller.POLLIN)
-            elif wait == Stream.W_SEND:
-                if self._write:
-                    poller.fd_wait(self._write.hEvent, ovs.poller.POLLOUT)
-            elif wait == Stream.W_CONNECT:
-                return
-
-    def connect_wait(self, poller):
-        self.wait(poller, Stream.W_CONNECT)
-
-    def recv_wait(self, poller):
-        self.wait(poller, Stream.W_RECV)
-
-    def send_wait(self, poller):
-        self.wait(poller, Stream.W_SEND)
-
-    def __del__(self):
-        # Don't delete the file: we might have forked.
-        if self.socket is not None:
-            self.socket.close()
-        if self.pipe is not None:
-            # Check if there are any remaining valid handles and close them
-            if self.pipe:
-                winutils.close_handle(self.pipe)
-            if self._read.hEvent:
-                winutils.close_handle(self._read.hEvent)
-            if self._write.hEvent:
-                winutils.close_handle(self._write.hEvent)
-
-    @staticmethod
-    def ssl_set_private_key_file(file_name):
-        Stream._SSL_private_key_file = file_name
-
-    @staticmethod
-    def ssl_set_certificate_file(file_name):
-        Stream._SSL_certificate_file = file_name
-
-    @staticmethod
-    def ssl_set_ca_cert_file(file_name):
-        Stream._SSL_ca_cert_file = file_name
-
-
-class PassiveStream(object):
-    # Windows only
-    connect = None                  # overlapped for read operation
-    connect_pending = False
-
-    @staticmethod
-    def needs_probes(name):
-        return False if name.startswith("punix:") else True
-
-    @staticmethod
-    def is_valid_name(name):
-        """Returns True if 'name' is a passive stream name in the form
-        "TYPE:ARGS" and TYPE is a supported passive stream type (currently
-        "punix:" or "ptcp"), otherwise False."""
-        return name.startswith("punix:") | name.startswith("ptcp:")
-
-    def __init__(self, sock, name, bind_path, pipe=None):
-        self.name = name
-        self.pipe = pipe
-        self.socket = sock
-        if pipe is not None:
-            self.connect = pywintypes.OVERLAPPED()
-            self.connect.hEvent = winutils.get_new_event()
-            self.connect_pending = False
-            suffix = name.split(":", 1)[1]
-            suffix = ovs.util.abs_file_name(ovs.dirs.RUNDIR, suffix)
-            self._pipename = winutils.get_pipe_name(suffix)
-
-        self.bind_path = bind_path
-
-    @staticmethod
-    def open(name):
-        """Attempts to start listening for remote stream connections.  'name'
-        is a connection name in the form "TYPE:ARGS", where TYPE is an passive
-        stream class's name and ARGS are stream class-specific. Currently the
-        supported values for TYPE are "punix" and "ptcp".
-
-        Returns (error, pstream): on success 'error' is 0 and 'pstream' is the
-        new PassiveStream, on failure 'error' is a positive errno value and
-        'pstream' is None."""
-        if not PassiveStream.is_valid_name(name):
-            return errno.EAFNOSUPPORT, None
-
-        bind_path = name[6:]
-        if name.startswith("punix:"):
-            bind_path = ovs.util.abs_file_name(ovs.dirs.RUNDIR, bind_path)
-            if sys.platform != 'win32':
-                error, sock = ovs.socket_util.make_unix_socket(
-                    socket.SOCK_STREAM, True, bind_path, None)
-                if error:
-                    return error, None
-            else:
-                # Branch used only on Windows
-                try:
-                    open(bind_path, 'w').close()
-                except:
-                    return errno.ENOENT, None
-
-                pipename = winutils.get_pipe_name(bind_path)
-                if len(pipename) > 255:
-                    # Return invalid argument if the name is too long
-                    return errno.ENOENT, None
-
-                npipe = winutils.create_named_pipe(pipename)
-                if not npipe:
-                    return errno.ENOENT, None
-                return 0, PassiveStream(None, name, bind_path, pipe=npipe)
-
-        elif name.startswith("ptcp:"):
-            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-            sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-            remote = name.split(':')
-            sock.bind((remote[1], int(remote[2])))
-
-        else:
-            raise Exception('Unknown connection string')
-
-        try:
-            sock.listen(10)
-        except socket.error as e:
-            vlog.err("%s: listen: %s" % (name, os.strerror(e.error)))
-            sock.close()
-            return e.error, None
-
-        return 0, PassiveStream(sock, name, bind_path)
-
-    def close(self):
-        """Closes this PassiveStream."""
-        if self.socket is not None:
-            self.socket.close()
-        if self.pipe is not None:
-            winutils.close_handle(self.pipe, vlog.warn)
-            winutils.close_handle(self.connect.hEvent, vlog.warn)
-        if self.bind_path is not None:
-            ovs.fatal_signal.unlink_file_now(self.bind_path)
-            self.bind_path = None
-
-    def accept(self):
-        """Tries to accept a new connection on this passive stream.  Returns
-        (error, stream): if successful, 'error' is 0 and 'stream' is the new
-        Stream object, and on failure 'error' is a positive errno value and
-        'stream' is None.
-
-        Will not block waiting for a connection.  If no connection is ready to
-        be accepted, returns (errno.EAGAIN, None) immediately."""
-        if sys.platform == 'win32' and self.socket is None:
-            return self.__accept_windows()
-        while True:
-            try:
-                sock, addr = self.socket.accept()
-                ovs.socket_util.set_nonblocking(sock)
-                if (sys.platform != 'win32' and sock.family == socket.AF_UNIX):
-                    return 0, Stream(sock, "unix:%s" % addr, 0)
-                return 0, Stream(sock, 'ptcp:%s:%s' % (addr[0],
-                                                       str(addr[1])), 0)
-            except socket.error as e:
-                error = ovs.socket_util.get_exception_errno(e)
-                if sys.platform == 'win32' and error == errno.WSAEWOULDBLOCK:
-                    # WSAEWOULDBLOCK would be the equivalent on Windows
-                    # for EAGAIN on Unix.
-                    error = errno.EAGAIN
-                if error != errno.EAGAIN:
-                    # XXX rate-limit
-                    vlog.dbg("accept: %s" % os.strerror(error))
-                return error, None
-
-    def __accept_windows(self):
-        if self.connect_pending:
-            try:
-                winutils.get_overlapped_result(self.pipe, self.connect, False)
-            except pywintypes.error as e:
-                if e.winerror == winutils.winerror.ERROR_IO_INCOMPLETE:
-                    # The operation is still pending, try again
-                    self.connect_pending = True
-                    return errno.EAGAIN, None
-                else:
-                    if self.pipe:
-                        win32pipe.DisconnectNamedPipe(self.pipe)
-                    return errno.EINVAL, None
-            self.connect_pending = False
-
-        error = winutils.connect_named_pipe(self.pipe, self.connect)
-        if error:
-            if error == winutils.winerror.ERROR_IO_PENDING:
-                self.connect_pending = True
-                return errno.EAGAIN, None
-            elif error != winutils.winerror.ERROR_PIPE_CONNECTED:
-                if self.pipe:
-                    win32pipe.DisconnectNamedPipe(self.pipe)
-                self.connect_pending = False
-                return errno.EINVAL, None
-            else:
-                win32event.SetEvent(self.connect.hEvent)
-
-        npipe = winutils.create_named_pipe(self._pipename)
-        if not npipe:
-            return errno.ENOENT, None
-
-        old_pipe = self.pipe
-        self.pipe = npipe
-        winutils.win32event.ResetEvent(self.connect.hEvent)
-        return 0, Stream(None, self.name, 0, pipe=old_pipe)
-
-    def wait(self, poller):
-        if sys.platform != 'win32' or self.socket is not None:
-            poller.fd_wait(self.socket, ovs.poller.POLLIN)
-        else:
-            poller.fd_wait(self.connect.hEvent, ovs.poller.POLLIN)
-
-    def __del__(self):
-        # Don't delete the file: we might have forked.
-        if self.socket is not None:
-            self.socket.close()
-        if self.pipe is not None:
-            # Check if there are any remaining valid handles and close them
-            if self.pipe:
-                winutils.close_handle(self.pipe)
-            if self._connect.hEvent:
-                winutils.close_handle(self._read.hEvent)
-
-
-def usage(name):
-    return """
-Active %s connection methods:
-  unix:FILE               Unix domain socket named FILE
-  tcp:HOST:PORT           TCP socket to HOST with port no of PORT
-  ssl:HOST:PORT           SSL socket to HOST with port no of PORT
-
-Passive %s connection methods:
-  punix:FILE              Listen on Unix domain socket FILE""" % (name, name)
-
-
-class UnixStream(Stream):
-    @staticmethod
-    def needs_probes():
-        return False
-
-    @staticmethod
-    def _open(suffix, dscp):
-        connect_path = suffix
-        return ovs.socket_util.make_unix_socket(socket.SOCK_STREAM,
-                                                True, None, connect_path)
-
-
-Stream.register_method("unix", UnixStream)
-
-
-class TCPStream(Stream):
-    @staticmethod
-    def needs_probes():
-        return True
-
-    @staticmethod
-    def _open(suffix, dscp):
-        error, sock = ovs.socket_util.inet_open_active(socket.SOCK_STREAM,
-                                                       suffix, 0, dscp)
-        if not error:
-            try:
-                sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
-            except socket.error as e:
-                sock.close()
-                return ovs.socket_util.get_exception_errno(e), None
-        return error, sock
-
-
-Stream.register_method("tcp", TCPStream)
-
-
-class SSLStream(Stream):
-    @staticmethod
-    def needs_probes():
-        return True
-
-    @staticmethod
-    def verify_cb(conn, cert, errnum, depth, ok):
-        return ok
-
-    @staticmethod
-    def _open(suffix, dscp):
-        error, sock = TCPStream._open(suffix, dscp)
-        if error:
-            return error, None
-
-        # Create an SSL context
-        ctx = SSL.Context(SSL.SSLv23_METHOD)
-        ctx.set_verify(SSL.VERIFY_PEER, SSLStream.verify_cb)
-        ctx.set_options(SSL.OP_NO_SSLv2 | SSL.OP_NO_SSLv3)
-        # If the client has not set the SSL configuration files
-        # exception would be raised.
-        ctx.use_privatekey_file(Stream._SSL_private_key_file)
-        ctx.use_certificate_file(Stream._SSL_certificate_file)
-        ctx.load_verify_locations(Stream._SSL_ca_cert_file)
-
-        ssl_sock = SSL.Connection(ctx, sock)
-        ssl_sock.set_connect_state()
-        return error, ssl_sock
-
-    def connect(self):
-        retval = super(SSLStream, self).connect()
-
-        if retval:
-            return retval
-
-        # TCP Connection is successful. Now do the SSL handshake
-        try:
-            self.socket.do_handshake()
-        except SSL.WantReadError:
-            return errno.EAGAIN
-        except SSL.SysCallError as e:
-            return ovs.socket_util.get_exception_errno(e)
-
-        return 0
-
-    def recv(self, n):
-        try:
-            return super(SSLStream, self).recv(n)
-        except SSL.WantReadError:
-            return (errno.EAGAIN, "")
-        except SSL.SysCallError as e:
-            return (ovs.socket_util.get_exception_errno(e), "")
-        except SSL.ZeroReturnError:
-            return (0, "")
-
-    def send(self, buf):
-        try:
-            return super(SSLStream, self).send(buf)
-        except SSL.WantWriteError:
-            return -errno.EAGAIN
-        except SSL.SysCallError as e:
-            return -ovs.socket_util.get_exception_errno(e)
-
-
-if SSL:
-    # Register SSL only if the OpenSSL module is available
-    Stream.register_method("ssl", SSLStream)
diff --git a/python/ovs/timeval.py b/python/ovs/timeval.py
deleted file mode 100644
index 9a0cf6762..000000000
--- a/python/ovs/timeval.py
+++ /dev/null
@@ -1,81 +0,0 @@ 
-# Copyright (c) 2009, 2010 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import sys
-import time
-
-try:
-    import ctypes
-
-    LIBRT = 'librt.so.1'
-    clock_gettime_name = 'clock_gettime'
-
-    if sys.platform.startswith("linux"):
-        CLOCK_MONOTONIC = 1
-        time_t = ctypes.c_long
-    elif sys.platform.startswith("netbsd"):
-        # NetBSD uses function renaming for ABI versioning.  While the proper
-        # way to get the appropriate version is of course "#include <time.h>",
-        # it is difficult with ctypes.  The following is appropriate for
-        # recent versions of NetBSD, including NetBSD-6.
-        LIBRT = 'libc.so.12'
-        clock_gettime_name = '__clock_gettime50'
-        CLOCK_MONOTONIC = 3
-        time_t = ctypes.c_int64
-    elif sys.platform.startswith("freebsd"):
-        CLOCK_MONOTONIC = 4
-        time_t = ctypes.c_int64
-    else:
-        raise Exception
-
-    class timespec(ctypes.Structure):
-        _fields_ = [
-            ('tv_sec', time_t),
-            ('tv_nsec', ctypes.c_long),
-        ]
-
-    librt = ctypes.CDLL(LIBRT)
-    clock_gettime = getattr(librt, clock_gettime_name)
-    clock_gettime.argtypes = [ctypes.c_int, ctypes.POINTER(timespec)]
-except:
-    # Librt shared library could not be loaded
-    librt = None
-
-
-def monotonic():
-    if not librt:
-        return time.time()
-
-    t = timespec()
-    if clock_gettime(CLOCK_MONOTONIC, ctypes.pointer(t)) == 0:
-        return t.tv_sec + t.tv_nsec * 1e-9
-    # Kernel does not support CLOCK_MONOTONIC
-    return time.time()
-
-
-# Use time.monotonic() if Python version >= 3.3
-if not hasattr(time, 'monotonic'):
-    time.monotonic = monotonic
-
-
-def msec():
-    """ Returns the system's monotonic time if possible, otherwise returns the
-    current time as the amount of time since the epoch, in milliseconds, as a
-    float."""
-    return time.monotonic() * 1000.0
-
-
-def postfork():
-    # Just a stub for now
-    pass
diff --git a/python/ovs/unixctl/__init__.py b/python/ovs/unixctl/__init__.py
deleted file mode 100644
index c2e5aca8d..000000000
--- a/python/ovs/unixctl/__init__.py
+++ /dev/null
@@ -1,91 +0,0 @@ 
-# Copyright (c) 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import sys
-
-import ovs.util
-
-import six
-
-commands = {}
-strtypes = six.string_types
-
-
-class _UnixctlCommand(object):
-    def __init__(self, usage, min_args, max_args, callback, aux):
-        self.usage = usage
-        self.min_args = min_args
-        self.max_args = max_args
-        self.callback = callback
-        self.aux = aux
-
-
-def _unixctl_help(conn, unused_argv, unused_aux):
-    reply = "The available commands are:\n"
-    command_names = sorted(commands.keys())
-    for name in command_names:
-        reply += "  "
-        usage = commands[name].usage
-        if usage:
-            reply += "%-23s %s" % (name, usage)
-        else:
-            reply += name
-        reply += "\n"
-    conn.reply(reply)
-
-
-def command_register(name, usage, min_args, max_args, callback, aux):
-    """ Registers a command with the given 'name' to be exposed by the
-    UnixctlServer. 'usage' describes the arguments to the command; it is used
-    only for presentation to the user in "help" output.
-
-    'callback' is called when the command is received.  It is passed a
-    UnixctlConnection object, the list of arguments as unicode strings, and
-    'aux'.  Normally 'callback' should reply by calling
-    UnixctlConnection.reply() or UnixctlConnection.reply_error() before it
-    returns, but if the command cannot be handled immediately, then it can
-    defer the reply until later.  A given connection can only process a single
-    request at a time, so a reply must be made eventually to avoid blocking
-    that connection."""
-
-    assert isinstance(name, strtypes)
-    assert isinstance(usage, strtypes)
-    assert isinstance(min_args, int)
-    assert isinstance(max_args, int)
-    assert callable(callback)
-
-    if name not in commands:
-        commands[name] = _UnixctlCommand(usage, min_args, max_args, callback,
-                                         aux)
-
-
-def socket_name_from_target(target):
-    assert isinstance(target, strtypes)
-
-    """ On Windows an absolute path contains ':' ( i.e: C:\\ ) """
-    if target.startswith('/') or target.find(':') > -1:
-        return 0, target
-
-    pidfile_name = "%s/%s.pid" % (ovs.dirs.RUNDIR, target)
-    pid = ovs.daemon.read_pidfile(pidfile_name)
-    if pid < 0:
-        return -pid, "cannot read pidfile \"%s\"" % pidfile_name
-
-    if sys.platform == "win32":
-        return 0, "%s/%s.ctl" % (ovs.dirs.RUNDIR, target)
-    else:
-        return 0, "%s/%s.%d.ctl" % (ovs.dirs.RUNDIR, target, pid)
-
-
-command_register("help", "", 0, 0, _unixctl_help, None)
diff --git a/python/ovs/unixctl/client.py b/python/ovs/unixctl/client.py
deleted file mode 100644
index e07b0380c..000000000
--- a/python/ovs/unixctl/client.py
+++ /dev/null
@@ -1,68 +0,0 @@ 
-# Copyright (c) 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import os
-
-import ovs.jsonrpc
-import ovs.stream
-import ovs.util
-
-import six
-
-vlog = ovs.vlog.Vlog("unixctl_client")
-strtypes = six.string_types
-
-
-class UnixctlClient(object):
-    def __init__(self, conn):
-        assert isinstance(conn, ovs.jsonrpc.Connection)
-        self._conn = conn
-
-    def transact(self, command, argv):
-        assert isinstance(command, strtypes)
-        assert isinstance(argv, list)
-        for arg in argv:
-            assert isinstance(arg, strtypes)
-
-        request = ovs.jsonrpc.Message.create_request(command, argv)
-        error, reply = self._conn.transact_block(request)
-
-        if error:
-            vlog.warn("error communicating with %s: %s"
-                      % (self._conn.name, os.strerror(error)))
-            return error, None, None
-
-        if reply.error is not None:
-            return 0, str(reply.error), None
-        else:
-            assert reply.result is not None
-            return 0, None, str(reply.result)
-
-    def close(self):
-        self._conn.close()
-        self.conn = None
-
-    @staticmethod
-    def create(path):
-        assert isinstance(path, str)
-
-        unix = "unix:%s" % ovs.util.abs_file_name(ovs.dirs.RUNDIR, path)
-        error, stream = ovs.stream.Stream.open_block(
-            ovs.stream.Stream.open(unix))
-
-        if error:
-            vlog.warn("failed to connect to %s" % path)
-            return error, None
-
-        return 0, UnixctlClient(ovs.jsonrpc.Connection(stream))
diff --git a/python/ovs/unixctl/server.py b/python/ovs/unixctl/server.py
deleted file mode 100644
index d5fb0807d..000000000
--- a/python/ovs/unixctl/server.py
+++ /dev/null
@@ -1,260 +0,0 @@ 
-# Copyright (c) 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import copy
-import errno
-import os
-import sys
-
-import ovs.dirs
-import ovs.jsonrpc
-import ovs.stream
-import ovs.unixctl
-import ovs.util
-import ovs.version
-import ovs.vlog
-
-import six
-from six.moves import range
-
-Message = ovs.jsonrpc.Message
-vlog = ovs.vlog.Vlog("unixctl_server")
-strtypes = six.string_types
-
-
-class UnixctlConnection(object):
-    def __init__(self, rpc):
-        assert isinstance(rpc, ovs.jsonrpc.Connection)
-        self._rpc = rpc
-        self._request_id = None
-
-    def run(self):
-        self._rpc.run()
-        error = self._rpc.get_status()
-        if error or self._rpc.get_backlog():
-            return error
-
-        for _ in range(10):
-            if error or self._request_id:
-                break
-
-            error, msg = self._rpc.recv()
-            if msg:
-                if msg.type == Message.T_REQUEST:
-                    self._process_command(msg)
-                else:
-                    # XXX: rate-limit
-                    vlog.warn("%s: received unexpected %s message"
-                              % (self._rpc.name,
-                                 Message.type_to_string(msg.type)))
-                    error = errno.EINVAL
-
-            if not error:
-                error = self._rpc.get_status()
-
-        return error
-
-    def reply(self, body):
-        self._reply_impl(True, body)
-
-    def reply_error(self, body):
-        self._reply_impl(False, body)
-
-    # Called only by unixctl classes.
-    def _close(self):
-        self._rpc.close()
-        self._request_id = None
-
-    def _wait(self, poller):
-        self._rpc.wait(poller)
-        if not self._rpc.get_backlog():
-            self._rpc.recv_wait(poller)
-
-    def _reply_impl(self, success, body):
-        assert isinstance(success, bool)
-        assert body is None or isinstance(body, strtypes)
-
-        assert self._request_id is not None
-
-        if body is None:
-            body = ""
-
-        if body and not body.endswith("\n"):
-            body += "\n"
-
-        if success:
-            reply = Message.create_reply(body, self._request_id)
-        else:
-            reply = Message.create_error(body, self._request_id)
-
-        self._rpc.send(reply)
-        self._request_id = None
-
-    def _process_command(self, request):
-        assert isinstance(request, ovs.jsonrpc.Message)
-        assert request.type == ovs.jsonrpc.Message.T_REQUEST
-
-        self._request_id = request.id
-
-        error = None
-        params = request.params
-        method = request.method
-        command = ovs.unixctl.commands.get(method)
-        if command is None:
-            error = '"%s" is not a valid command' % method
-        elif len(params) < command.min_args:
-            error = '"%s" command requires at least %d arguments' \
-                    % (method, command.min_args)
-        elif len(params) > command.max_args:
-            error = '"%s" command takes at most %d arguments' \
-                    % (method, command.max_args)
-        else:
-            for param in params:
-                if not isinstance(param, strtypes):
-                    error = '"%s" command has non-string argument' % method
-                    break
-
-            if error is None:
-                unicode_params = [six.text_type(p) for p in params]
-                command.callback(self, unicode_params, command.aux)
-
-        if error:
-            self.reply_error(error)
-
-
-def _unixctl_version(conn, unused_argv, version):
-    assert isinstance(conn, UnixctlConnection)
-    version = "%s (Open vSwitch) %s" % (ovs.util.PROGRAM_NAME, version)
-    conn.reply(version)
-
-
-class UnixctlServer(object):
-    def __init__(self, listener):
-        assert isinstance(listener, ovs.stream.PassiveStream)
-        self._listener = listener
-        self._conns = []
-
-    def run(self):
-        for _ in range(10):
-            error, stream = self._listener.accept()
-            if sys.platform == "win32" and error == errno.WSAEWOULDBLOCK:
-                # WSAEWOULDBLOCK would be the equivalent on Windows
-                # for EAGAIN on Unix.
-                error = errno.EAGAIN
-            if not error:
-                rpc = ovs.jsonrpc.Connection(stream)
-                self._conns.append(UnixctlConnection(rpc))
-            elif error == errno.EAGAIN:
-                break
-            else:
-                # XXX: rate-limit
-                vlog.warn("%s: accept failed: %s" % (self._listener.name,
-                                                     os.strerror(error)))
-
-        for conn in copy.copy(self._conns):
-            error = conn.run()
-            if error and error != errno.EAGAIN:
-                conn._close()
-                self._conns.remove(conn)
-
-    def wait(self, poller):
-        self._listener.wait(poller)
-        for conn in self._conns:
-            conn._wait(poller)
-
-    def close(self):
-        for conn in self._conns:
-            conn._close()
-        self._conns = None
-
-        self._listener.close()
-        self._listener = None
-
-    @staticmethod
-    def create(path, version=None):
-        """Creates a new UnixctlServer which listens on a unixctl socket
-        created at 'path'.  If 'path' is None, the default path is chosen.
-        'version' contains the version of the server as reported by the unixctl
-        version command.  If None, ovs.version.VERSION is used."""
-
-        assert path is None or isinstance(path, strtypes)
-
-        if path is not None:
-            path = "punix:%s" % ovs.util.abs_file_name(ovs.dirs.RUNDIR, path)
-        else:
-            if sys.platform == "win32":
-                path = "punix:%s/%s.ctl" % (ovs.dirs.RUNDIR,
-                                            ovs.util.PROGRAM_NAME)
-            else:
-                path = "punix:%s/%s.%d.ctl" % (ovs.dirs.RUNDIR,
-                                               ovs.util.PROGRAM_NAME,
-                                               os.getpid())
-
-        if version is None:
-            version = ovs.version.VERSION
-
-        error, listener = ovs.stream.PassiveStream.open(path)
-        if error:
-            ovs.util.ovs_error(error, "could not initialize control socket %s"
-                               % path)
-            return error, None
-
-        ovs.unixctl.command_register("version", "", 0, 0, _unixctl_version,
-                                     version)
-
-        return 0, UnixctlServer(listener)
-
-
-class UnixctlClient(object):
-    def __init__(self, conn):
-        assert isinstance(conn, ovs.jsonrpc.Connection)
-        self._conn = conn
-
-    def transact(self, command, argv):
-        assert isinstance(command, strtypes)
-        assert isinstance(argv, list)
-        for arg in argv:
-            assert isinstance(arg, strtypes)
-
-        request = Message.create_request(command, argv)
-        error, reply = self._conn.transact_block(request)
-
-        if error:
-            vlog.warn("error communicating with %s: %s"
-                      % (self._conn.name, os.strerror(error)))
-            return error, None, None
-
-        if reply.error is not None:
-            return 0, str(reply.error), None
-        else:
-            assert reply.result is not None
-            return 0, None, str(reply.result)
-
-    def close(self):
-        self._conn.close()
-        self.conn = None
-
-    @staticmethod
-    def create(path):
-        assert isinstance(path, str)
-
-        unix = "unix:%s" % ovs.util.abs_file_name(ovs.dirs.RUNDIR, path)
-        error, stream = ovs.stream.Stream.open_block(
-            ovs.stream.Stream.open(unix))
-
-        if error:
-            vlog.warn("failed to connect to %s" % path)
-            return error, None
-
-        return 0, UnixctlClient(ovs.jsonrpc.Connection(stream))
diff --git a/python/ovs/util.py b/python/ovs/util.py
deleted file mode 100644
index 3dba022f8..000000000
--- a/python/ovs/util.py
+++ /dev/null
@@ -1,95 +0,0 @@ 
-# Copyright (c) 2010, 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import os
-import os.path
-import sys
-
-PROGRAM_NAME = os.path.basename(sys.argv[0])
-EOF = -1
-
-
-def abs_file_name(dir_, file_name):
-    """If 'file_name' starts with '/', returns a copy of 'file_name'.
-    Otherwise, returns an absolute path to 'file_name' considering it relative
-    to 'dir_', which itself must be absolute.  'dir_' may be None or the empty
-    string, in which case the current working directory is used.
-
-    Returns None if 'dir_' is None and getcwd() fails.
-
-    This differs from os.path.abspath() in that it will never change the
-    meaning of a file name.
-
-    On Windows an absolute path contains ':' ( i.e: C:\\ ) """
-    if file_name.startswith('/') or file_name.find(':') > -1:
-        return file_name
-    else:
-        if dir_ is None or dir_ == "":
-            try:
-                dir_ = os.getcwd()
-            except OSError:
-                return None
-
-        if dir_.endswith('/'):
-            return dir_ + file_name
-        else:
-            return "%s/%s" % (dir_, file_name)
-
-
-def ovs_retval_to_string(retval):
-    """Many OVS functions return an int which is one of:
-    - 0: no error yet
-    - >0: errno value
-    - EOF: end of file (not necessarily an error; depends on the function
-      called)
-
-    Returns the appropriate human-readable string."""
-
-    if not retval:
-        return ""
-    if retval > 0:
-        return os.strerror(retval)
-    if retval == EOF:
-        return "End of file"
-    return "***unknown return value: %s***" % retval
-
-
-def ovs_error(err_no, message, vlog=None):
-    """Prints 'message' on stderr and emits an ERROR level log message to
-    'vlog' if supplied.  If 'err_no' is nonzero, then it is formatted with
-    ovs_retval_to_string() and appended to the message inside parentheses.
-
-    'message' should not end with a new-line, because this function will add
-    one itself."""
-
-    err_msg = "%s: %s" % (PROGRAM_NAME, message)
-    if err_no:
-        err_msg += " (%s)" % ovs_retval_to_string(err_no)
-
-    sys.stderr.write("%s\n" % err_msg)
-    if vlog:
-        vlog.err(err_msg)
-
-
-def ovs_fatal(*args, **kwargs):
-    """Prints 'message' on stderr and emits an ERROR level log message to
-    'vlog' if supplied.  If 'err_no' is nonzero, then it is formatted with
-    ovs_retval_to_string() and appended to the message inside parentheses.
-    Then, terminates with exit code 1 (indicating a failure).
-
-    'message' should not end with a new-line, because this function will add
-    one itself."""
-
-    ovs_error(*args, **kwargs)
-    sys.exit(1)
diff --git a/python/ovs/vlog.py b/python/ovs/vlog.py
deleted file mode 100644
index ae5156d60..000000000
--- a/python/ovs/vlog.py
+++ /dev/null
@@ -1,475 +0,0 @@ 
-
-# Copyright (c) 2011, 2012, 2013, 2015, 2016 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import datetime
-import logging
-import logging.handlers
-import os
-import re
-import socket
-import sys
-import threading
-
-import ovs.dirs
-import ovs.unixctl
-import ovs.util
-
-import six
-from six.moves import range
-
-DESTINATIONS = {"console": "info", "file": "info", "syslog": "info"}
-PATTERNS = {
-    "console": "%D{%Y-%m-%dT%H:%M:%SZ}|%05N|%c%T|%p|%m",
-    "file": "%D{%Y-%m-%dT%H:%M:%S.###Z}|%05N|%c%T|%p|%m",
-    "syslog": "ovs|%05N|%c%T|%p|%m",
-}
-LEVELS = {
-    "dbg": logging.DEBUG,
-    "info": logging.INFO,
-    "warn": logging.WARNING,
-    "err": logging.ERROR,
-    "emer": logging.CRITICAL,
-    "off": logging.CRITICAL
-}
-FACILITIES = ['auth', 'authpriv', 'cron', 'daemon', 'ftp', 'kern', 'lpr',
-              'mail', 'news', 'syslog', 'user', 'uucp', 'local0', 'local1',
-              'local2', 'local3', 'local4', 'local5', 'local6', 'local7']
-syslog_facility = "daemon"
-syslog_handler = ''
-
-
-def get_level(level_str):
-    return LEVELS.get(level_str.lower())
-
-
-class Vlog(object):
-    __inited = False
-    __msg_num = 0
-    __start_time = 0
-    __mfl = {}  # Module -> destination -> level
-    __log_file = None
-    __file_handler = None
-    __log_patterns = PATTERNS
-
-    def __init__(self, name):
-        """Creates a new Vlog object representing a module called 'name'.  The
-        created Vlog object will do nothing until the Vlog.init() static method
-        is called.  Once called, no more Vlog objects may be created."""
-
-        assert not Vlog.__inited
-        self.name = name.lower()
-        if name not in Vlog.__mfl:
-            Vlog.__mfl[self.name] = DESTINATIONS.copy()
-
-    def __log(self, level, message, **kwargs):
-        if not Vlog.__inited:
-            return
-
-        level_num = LEVELS.get(level.lower(), logging.DEBUG)
-        msg_num = Vlog.__msg_num
-        Vlog.__msg_num += 1
-
-        for f, f_level in six.iteritems(Vlog.__mfl[self.name]):
-            f_level = LEVELS.get(f_level, logging.CRITICAL)
-            if level_num >= f_level:
-                msg = self._build_message(message, f, level, msg_num)
-                logging.getLogger(f).log(level_num, msg, **kwargs)
-
-    def _build_message(self, message, destination, level, msg_num):
-        pattern = self.__log_patterns[destination]
-        tmp = pattern
-
-        tmp = self._format_time(tmp)
-
-        matches = re.findall("(%-?[0]?[0-9]?[AcmNnpPrtT])", tmp)
-        for m in matches:
-            if "A" in m:
-                tmp = self._format_field(tmp, m, ovs.util.PROGRAM_NAME)
-            elif "c" in m:
-                tmp = self._format_field(tmp, m, self.name)
-            elif "m" in m:
-                tmp = self._format_field(tmp, m, message)
-            elif "N" in m:
-                tmp = self._format_field(tmp, m, str(msg_num))
-            elif "n" in m:
-                tmp = re.sub(m, "\n", tmp)
-            elif "p" in m:
-                tmp = self._format_field(tmp, m, level.upper())
-            elif "P" in m:
-                self._format_field(tmp, m, str(os.getpid()))
-            elif "r" in m:
-                now = datetime.datetime.utcnow()
-                delta = now - self.__start_time
-                ms = delta.microseconds / 1000
-                tmp = self._format_field(tmp, m, str(ms))
-            elif "t" in m:
-                subprogram = threading.currentThread().getName()
-                if subprogram == "MainThread":
-                    subprogram = "main"
-                tmp = self._format_field(tmp, m, subprogram)
-            elif "T" in m:
-                subprogram = threading.currentThread().getName()
-                if not subprogram == "MainThread":
-                    subprogram = "({})".format(subprogram)
-                else:
-                    subprogram = ""
-                tmp = self._format_field(tmp, m, subprogram)
-        return tmp.strip()
-
-    def _format_field(self, tmp, match, replace):
-        formatting = re.compile("^%(0)?([1-9])?")
-        matches = formatting.match(match)
-        # Do we need to apply padding?
-        if not matches.group(1) and replace != "":
-            replace = replace.center(len(replace) + 2)
-        # Does the field have a minimum width
-        if matches.group(2):
-            min_width = int(matches.group(2))
-            if len(replace) < min_width:
-                replace = replace.center(min_width)
-        return re.sub(match, replace.replace('\\', r'\\'), tmp)
-
-    def _format_time(self, tmp):
-        date_regex = re.compile(r'(%(0?[1-9]?[dD])(\{(.*)\})?)')
-        match = date_regex.search(tmp)
-
-        if match is None:
-            return tmp
-
-        # UTC date or Local TZ?
-        if match.group(2) == "d":
-            now = datetime.datetime.now()
-        elif match.group(2) == "D":
-            now = datetime.datetime.utcnow()
-
-        # Custom format or ISO format?
-        if match.group(3):
-            time = datetime.date.strftime(now, match.group(4))
-            try:
-                i = len(re.search("#+", match.group(4)).group(0))
-                msec = '{0:0>{i}.{i}}'.format(str(now.microsecond / 1000), i=i)
-                time = re.sub('#+', msec, time)
-            except AttributeError:
-                pass
-        else:
-            time = datetime.datetime.isoformat(now.replace(microsecond=0))
-
-        return self._format_field(tmp, match.group(1), time)
-
-    def emer(self, message, **kwargs):
-        self.__log("EMER", message, **kwargs)
-
-    def err(self, message, **kwargs):
-        self.__log("ERR", message, **kwargs)
-
-    def warn(self, message, **kwargs):
-        self.__log("WARN", message, **kwargs)
-
-    def info(self, message, **kwargs):
-        self.__log("INFO", message, **kwargs)
-
-    def dbg(self, message, **kwargs):
-        self.__log("DBG", message, **kwargs)
-
-    def __is_enabled(self, level):
-        level = LEVELS.get(level.lower(), logging.DEBUG)
-        for f, f_level in six.iteritems(Vlog.__mfl[self.name]):
-            f_level = LEVELS.get(f_level, logging.CRITICAL)
-            if level >= f_level:
-                return True
-        return False
-
-    def emer_is_enabled(self):
-        return self.__is_enabled("EMER")
-
-    def err_is_enabled(self):
-        return self.__is_enabled("ERR")
-
-    def warn_is_enabled(self):
-        return self.__is_enabled("WARN")
-
-    def info_is_enabled(self):
-        return self.__is_enabled("INFO")
-
-    def dbg_is_enabled(self):
-        return self.__is_enabled("DBG")
-
-    def exception(self, message):
-        """Logs 'message' at ERR log level.  Includes a backtrace when in
-        exception context."""
-        self.err(message, exc_info=True)
-
-    @staticmethod
-    def init(log_file=None):
-        """Intializes the Vlog module.  Causes Vlog to write to 'log_file' if
-        not None.  Should be called after all Vlog objects have been created.
-        No logging will occur until this function is called."""
-
-        if Vlog.__inited:
-            return
-
-        Vlog.__inited = True
-        Vlog.__start_time = datetime.datetime.utcnow()
-        logging.raiseExceptions = False
-        Vlog.__log_file = log_file
-        for f in DESTINATIONS:
-            logger = logging.getLogger(f)
-            logger.setLevel(logging.DEBUG)
-
-            try:
-                if f == "console":
-                    logger.addHandler(logging.StreamHandler(sys.stderr))
-                elif f == "syslog":
-                    Vlog.add_syslog_handler()
-                elif f == "file" and Vlog.__log_file:
-                    Vlog.__file_handler = logging.FileHandler(Vlog.__log_file)
-                    logger.addHandler(Vlog.__file_handler)
-            except (IOError, socket.error):
-                logger.disabled = True
-
-        ovs.unixctl.command_register("vlog/reopen", "", 0, 0,
-                                     Vlog._unixctl_vlog_reopen, None)
-        ovs.unixctl.command_register("vlog/close", "", 0, 0,
-                                     Vlog._unixctl_vlog_close, None)
-        try:
-            # Windows limitation on Python 2, sys.maxsize is a long number
-            # on 64 bits environments, while sys.maxint is the maximum int
-            # number. Python 3 works as expected.
-            maxsize_int = sys.maxint
-        except AttributeError:
-            maxsize_int = sys.maxsize
-        ovs.unixctl.command_register("vlog/set", "spec", 1, maxsize_int,
-                                     Vlog._unixctl_vlog_set, None)
-        ovs.unixctl.command_register("vlog/list", "", 0, 0,
-                                     Vlog._unixctl_vlog_list, None)
-
-    @staticmethod
-    def set_level(module, destination, level):
-        """ Sets the log level of the 'module'-'destination' tuple to 'level'.
-        All three arguments are strings which are interpreted the same as
-        arguments to the --verbose flag.  Should be called after all Vlog
-        objects have already been created."""
-
-        module = module.lower()
-        destination = destination.lower()
-        level = level.lower()
-
-        if destination != "any" and destination not in DESTINATIONS:
-            return
-
-        if module != "any" and module not in Vlog.__mfl:
-            return
-
-        if level not in LEVELS:
-            return
-
-        if module == "any":
-            modules = list(Vlog.__mfl.keys())
-        else:
-            modules = [module]
-
-        if destination == "any":
-            destinations = list(DESTINATIONS.keys())
-        else:
-            destinations = [destination]
-
-        for m in modules:
-            for f in destinations:
-                Vlog.__mfl[m][f] = level
-
-    @staticmethod
-    def set_pattern(destination, pattern):
-        """ Sets the log pattern of the 'destination' to 'pattern' """
-        destination = destination.lower()
-        Vlog.__log_patterns[destination] = pattern
-
-    @staticmethod
-    def add_syslog_handler(facility=None):
-        global syslog_facility, syslog_handler
-
-        # If handler is already added and there is no change in 'facility',
-        # there is nothing to do.
-        if (not facility or facility == syslog_facility) and syslog_handler:
-            return
-
-        logger = logging.getLogger('syslog')
-        # Disable the logger if the "null" syslog method requested
-        # by environment.
-        if os.environ.get('OVS_SYSLOG_METHOD') == "null":
-            logger.disabled = True
-            return
-
-        if facility is None:
-            facility = syslog_facility
-
-        new_handler = logging.handlers.SysLogHandler(address="/dev/log",
-                                                     facility=facility)
-
-        if syslog_handler:
-            logger.removeHandler(syslog_handler)
-
-        syslog_handler = new_handler
-        syslog_facility = facility
-
-        logger.addHandler(syslog_handler)
-        return
-
-    @staticmethod
-    def set_levels_from_string(s):
-        module = None
-        level = None
-        destination = None
-
-        words = re.split('[ :]', s)
-        if words[0] == "pattern":
-            try:
-                if words[1] in DESTINATIONS and words[2]:
-                    segments = [words[i] for i in range(2, len(words))]
-                    pattern = "".join(segments)
-                    Vlog.set_pattern(words[1], pattern)
-                    return
-                else:
-                    return "Destination %s does not exist" % words[1]
-            except IndexError:
-                return "Please supply a valid pattern and destination"
-        elif words[0] == "FACILITY":
-            if words[1] in FACILITIES:
-                try:
-                    Vlog.add_syslog_handler(words[1])
-                except (IOError, socket.error):
-                    logger = logging.getLogger('syslog')
-                    logger.disabled = True
-                return
-            else:
-                return "Facility %s is invalid" % words[1]
-
-        for word in [w.lower() for w in words]:
-            if word == "any":
-                pass
-            elif word in DESTINATIONS:
-                if destination:
-                    return "cannot specify multiple destinations"
-                destination = word
-            elif word in LEVELS:
-                if level:
-                    return "cannot specify multiple levels"
-                level = word
-            elif word in Vlog.__mfl:
-                if module:
-                    return "cannot specify multiple modules"
-                module = word
-            else:
-                return "no destination, level, or module \"%s\"" % word
-
-        Vlog.set_level(module or "any", destination or "any", level or "any")
-
-    @staticmethod
-    def get_levels():
-        lines = ["                 console    syslog    file\n",
-                 "                 -------    ------    ------\n"]
-        lines.extend(sorted(["%-16s  %4s       %4s       %4s\n"
-                             % (m,
-                                Vlog.__mfl[m]["console"],
-                                Vlog.__mfl[m]["syslog"],
-                                Vlog.__mfl[m]["file"]) for m in Vlog.__mfl]))
-        return ''.join(lines)
-
-    @staticmethod
-    def reopen_log_file():
-        """Closes and then attempts to re-open the current log file.  (This is
-        useful just after log rotation, to ensure that the new log file starts
-        being used.)"""
-
-        if Vlog.__log_file:
-            logger = logging.getLogger("file")
-            logger.removeHandler(Vlog.__file_handler)
-            Vlog.__file_handler = logging.FileHandler(Vlog.__log_file)
-            logger.addHandler(Vlog.__file_handler)
-
-    @staticmethod
-    def close_log_file():
-        """Closes the current log file. (This is useful on Windows, to ensure
-        that a reference to the file is not kept by the daemon in case of
-        detach.)"""
-        if Vlog.__log_file:
-            logger = logging.getLogger("file")
-            logger.removeHandler(Vlog.__file_handler)
-            Vlog.__file_handler.close()
-
-    @staticmethod
-    def _unixctl_vlog_reopen(conn, unused_argv, unused_aux):
-        if Vlog.__log_file:
-            Vlog.reopen_log_file()
-            conn.reply(None)
-        else:
-            conn.reply("Logging to file not configured")
-
-    @staticmethod
-    def _unixctl_vlog_close(conn, unused_argv, unused_aux):
-        if Vlog.__log_file:
-            if sys.platform != 'win32':
-                logger = logging.getLogger("file")
-                logger.removeHandler(Vlog.__file_handler)
-            else:
-                Vlog.close_log_file()
-        conn.reply(None)
-
-    @staticmethod
-    def _unixctl_vlog_set(conn, argv, unused_aux):
-        for arg in argv:
-            msg = Vlog.set_levels_from_string(arg)
-            if msg:
-                conn.reply(msg)
-                return
-        conn.reply(None)
-
-    @staticmethod
-    def _unixctl_vlog_list(conn, unused_argv, unused_aux):
-        conn.reply(Vlog.get_levels())
-
-
-def add_args(parser):
-    """Adds vlog related options to 'parser', an ArgumentParser object.  The
-    resulting arguments parsed by 'parser' should be passed to handle_args."""
-
-    group = parser.add_argument_group(title="Logging Options")
-    group.add_argument("--log-file", nargs="?", const="default",
-                       help="Enables logging to a file.  Default log file"
-                       " is used if LOG_FILE is omitted.")
-    group.add_argument("-v", "--verbose", nargs="*",
-                       help="Sets logging levels, see ovs-vswitchd(8)."
-                       "  Defaults to dbg.")
-
-
-def handle_args(args):
-    """ Handles command line arguments ('args') parsed by an ArgumentParser.
-    The ArgumentParser should have been primed by add_args().  Also takes care
-    of initializing the Vlog module."""
-
-    log_file = args.log_file
-    if log_file == "default":
-        log_file = "%s/%s.log" % (ovs.dirs.LOGDIR, ovs.util.PROGRAM_NAME)
-
-    if args.verbose is None:
-        args.verbose = []
-    elif args.verbose == []:
-        args.verbose = ["any:any:dbg"]
-
-    for verbose in args.verbose:
-        msg = Vlog.set_levels_from_string(verbose)
-        if msg:
-            ovs.util.ovs_fatal(0, "processing \"%s\": %s" % (verbose, msg))
-
-    Vlog.init(log_file)
diff --git a/python/ovs/winutils.py b/python/ovs/winutils.py
deleted file mode 100644
index 8f3151a36..000000000
--- a/python/ovs/winutils.py
+++ /dev/null
@@ -1,266 +0,0 @@ 
-# Copyright (c) 2016 Cloudbase Solutions Srl
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import sys
-
-if sys.platform != 'win32':
-    raise Exception("Intended to use only on Windows")
-else:
-    import ntsecuritycon
-    import pywintypes
-    import win32con
-    import win32event
-    import win32file
-    import win32pipe
-    import win32security
-    import winerror
-
-
-def close_handle(handle, logger=None):
-    try:
-        win32file.CloseHandle(handle)
-        return None
-    except pywintypes.error as e:
-        if logger is not None:
-            logger("failed to close handle: %s" % e.strerror)
-        return e.winerror
-
-
-def windows_create_pipe(sAttrs=-1, nSize=None):
-    # Default values if parameters are not passed
-    if sAttrs == -1:
-        sAttrs = win32security.SECURITY_ATTRIBUTES()
-        sAttrs.bInheritHandle = 1
-    if nSize is None:
-        # If this parameter is zero, the system uses the default buffer size.
-        nSize = 0
-
-    try:
-        (read_pipe, write_pipe) = win32pipe.CreatePipe(sAttrs, nSize)
-    except pywintypes.error:
-        raise
-
-    return (read_pipe, write_pipe)
-
-
-def windows_read_pipe(fd, length):
-    try:
-        (error, data) = win32file.ReadFile(fd, length)
-        return error, data
-    except pywintypes.error as e:
-        return e.winerror, ""
-
-
-def create_file(filename, desiredAccess=None, shareMode=None, attributes=-1,
-                CreationDisposition=None, flagsAndAttributes=None,
-                hTemplateFile=-1):
-    # Default values if parameters are not passed
-    if desiredAccess is None:
-        desiredAccess = win32file.GENERIC_READ | win32file.GENERIC_WRITE
-    if shareMode is None:
-        shareMode = 0
-    if attributes == -1:
-        # attributes can be None
-        attributes = None
-    if CreationDisposition is None:
-        CreationDisposition = win32file.OPEN_EXISTING
-    if flagsAndAttributes is None:
-        flagsAndAttributes = (win32file.FILE_ATTRIBUTE_NORMAL |
-                              win32file.FILE_FLAG_OVERLAPPED |
-                              win32file.FILE_FLAG_NO_BUFFERING)
-    if hTemplateFile == -1:
-        hTemplateFile = None
-
-    try:
-        npipe = win32file.CreateFile(filename,
-                                     desiredAccess,
-                                     shareMode,
-                                     attributes,
-                                     CreationDisposition,
-                                     flagsAndAttributes,
-                                     hTemplateFile)
-    except pywintypes.error:
-        raise
-    return npipe
-
-
-def write_file(handle, data, overlapped=None):
-    try:
-        (errCode, nBytesWritten) = win32file.WriteFile(handle,
-                                                       data,
-                                                       overlapped)
-        # Note: win32file.WriteFile doesn't throw an exception
-        # in case it receives ERROR_IO_PENDING.
-        return (errCode, nBytesWritten)
-    except pywintypes.error as e:
-        return (e.winerror, 0)
-
-
-def read_file(handle, bufsize, overlapped=None):
-    try:
-        # Note: win32file.ReadFile doesn't throw an exception
-        # in case it receives ERROR_IO_PENDING.
-        (errCode, read_buffer) = win32file.ReadFile(
-            handle, bufsize, overlapped)
-        return (errCode, read_buffer)
-    except pywintypes.error as e:
-        return (e.winerror, "")
-
-
-def create_named_pipe(pipename, openMode=None, pipeMode=None,
-                      nMaxInstances=None, nOutBufferSize=None,
-                      nInBufferSize=None, nDefaultTimeOut=None,
-                      saAttr=-1):
-    # Default values if parameters are not passed
-    if openMode is None:
-        openMode = win32con.PIPE_ACCESS_DUPLEX | win32con.FILE_FLAG_OVERLAPPED
-    if pipeMode is None:
-        pipeMode = (win32con.PIPE_TYPE_MESSAGE |
-                    win32con.PIPE_READMODE_BYTE |
-                    win32con.PIPE_WAIT)
-    if nMaxInstances is None:
-        nMaxInstances = 64
-    if nOutBufferSize is None:
-        nOutBufferSize = 65000
-    if nInBufferSize is None:
-        nInBufferSize = 65000
-    if nDefaultTimeOut is None:
-        nDefaultTimeOut = 0
-    if saAttr == -1:
-        # saAttr can be None
-        saAttr = win32security.SECURITY_ATTRIBUTES()
-
-        # The identifier authority.
-        sia = ntsecuritycon.SECURITY_NT_AUTHORITY
-
-        # Initialize the SID.
-        remoteAccessSid = win32security.SID()
-        remoteAccessSid.Initialize(
-            sia,  # The identifier authority.
-            1)  # The number of sub authorities to allocate.
-        # Disable access over network.
-        remoteAccessSid.SetSubAuthority(
-            0,  # The index of the sub authority to set
-            ntsecuritycon.SECURITY_NETWORK_RID)
-
-        allowedPsids = []
-        # Allow Windows Services to access the Named Pipe.
-        allowedPsid_0 = win32security.SID()
-        allowedPsid_0.Initialize(
-            sia,  # The identifier authority.
-            1)  # The number of sub authorities to allocate.
-        allowedPsid_0.SetSubAuthority(
-            0,  # The index of the sub authority to set
-            ntsecuritycon.SECURITY_LOCAL_SYSTEM_RID)
-        # Allow Administrators to access the Named Pipe.
-        allowedPsid_1 = win32security.SID()
-        allowedPsid_1.Initialize(
-            sia,  # The identifier authority.
-            2)  # The number of sub authorities to allocate.
-        allowedPsid_1.SetSubAuthority(
-            0,  # The index of the sub authority to set
-            ntsecuritycon.SECURITY_BUILTIN_DOMAIN_RID)
-        allowedPsid_1.SetSubAuthority(
-            1,  # The index of the sub authority to set
-            ntsecuritycon.DOMAIN_ALIAS_RID_ADMINS)
-
-        allowedPsids.append(allowedPsid_0)
-        allowedPsids.append(allowedPsid_1)
-
-        # Initialize an ACL.
-        acl = win32security.ACL()
-        acl.Initialize()
-        # Add denied ACL.
-        acl.AddAccessDeniedAce(win32security.ACL_REVISION,
-                               ntsecuritycon.GENERIC_ALL,
-                               remoteAccessSid)
-        # Add allowed ACLs.
-        for allowedPsid in allowedPsids:
-            acl.AddAccessAllowedAce(win32security.ACL_REVISION,
-                                    ntsecuritycon.GENERIC_ALL,
-                                    allowedPsid)
-
-        # Initialize an SD.
-        sd = win32security.SECURITY_DESCRIPTOR()
-        sd.Initialize()
-        # Set DACL.
-        sd.SetSecurityDescriptorDacl(True, acl, False)
-
-        saAttr.bInheritHandle = 1
-        saAttr.SECURITY_DESCRIPTOR = sd
-
-    try:
-        npipe = win32pipe.CreateNamedPipe(pipename,
-                                          openMode,
-                                          pipeMode,
-                                          nMaxInstances,
-                                          nOutBufferSize,
-                                          nInBufferSize,
-                                          nDefaultTimeOut,
-                                          saAttr)
-
-        if npipe == win32file.INVALID_HANDLE_VALUE:
-            return None
-
-        return npipe
-    except pywintypes.error:
-        return None
-
-
-def set_pipe_mode(hPipe, mode=-1, maxCollectionCount=None,
-                  collectDataTimeout=None):
-    # Default values if parameters are not passed
-    if mode == -1:
-        mode = win32pipe.PIPE_READMODE_BYTE
-    try:
-        win32pipe.SetNamedPipeHandleState(
-            hPipe, mode, maxCollectionCount, collectDataTimeout)
-    except pywintypes.error:
-        raise
-
-
-def connect_named_pipe(pipe_handle, overlapped=None):
-    try:
-        # If the result of ConnectNamedPipe is ERROR_IO_PENDING or
-        # ERROR_PIPE_CONNECTED, then this value is returned.
-        # All other error values raise a win32 exception
-        error = win32pipe.ConnectNamedPipe(pipe_handle, overlapped)
-        return error
-    except pywintypes.error as e:
-        return e.winerror
-
-
-def get_pipe_name(name):
-    name = name.replace('/', '')
-    name = name.replace('\\', '')
-    name = "\\\\.\\pipe\\" + name
-    return name
-
-
-def get_overlapped_result(handle, overlapped=None, bWait=False):
-    try:
-        return win32file.GetOverlappedResult(handle, overlapped, bWait)
-    except pywintypes.error:
-        raise
-
-
-def get_new_event(sa=None, bManualReset=True, bInitialState=True,
-                  objectName=None):
-    return win32event.CreateEvent(sa, bManualReset, bInitialState, objectName)
-
-
-pipe_disconnected_errors = [winerror.ERROR_PIPE_NOT_CONNECTED,
-                            winerror.ERROR_BAD_PIPE,
-                            winerror.ERROR_NO_DATA,
-                            winerror.ERROR_BROKEN_PIPE]
diff --git a/python/ovstest/__init__.py b/python/ovstest/__init__.py
deleted file mode 100644
index 218d8921e..000000000
--- a/python/ovstest/__init__.py
+++ /dev/null
@@ -1 +0,0 @@ 
-# This file intentionally left blank.
diff --git a/python/ovstest/args.py b/python/ovstest/args.py
deleted file mode 100644
index 975d1880b..000000000
--- a/python/ovstest/args.py
+++ /dev/null
@@ -1,283 +0,0 @@ 
-# Copyright (c) 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-ovsargs provide argument parsing for ovs-test utility
-"""
-
-import argparse
-import re
-import socket
-import sys
-
-CONTROL_PORT = 15531
-DATA_PORT = 15532
-
-
-def ip_address(string):
-    """Verifies if string is a valid IP address"""
-    try:
-        socket.inet_aton(string)
-    except socket.error:
-        raise argparse.ArgumentTypeError("Not a valid IPv4 address")
-    return string
-
-
-def ip_optional_mask(string):
-    """
-    Verifies if string contains a valid IP address and an optional mask in
-    CIDR notation.
-    """
-    token = string.split("/")
-    if len(token) > 2:
-        raise argparse.ArgumentTypeError("IP address and netmask must be "
-                                         "separated by a single slash")
-    elif len(token) == 2:
-        try:
-            mask = int(token[1])
-        except ValueError:
-            raise argparse.ArgumentTypeError("Netmask is not a valid integer")
-        if mask < 0 or mask > 31:
-            raise argparse.ArgumentTypeError("Netmask must be in range 0..31")
-    ip_address(token[0])
-    return string
-
-
-def port(string):
-    """Convert a string into a TCP/UDP Port (integer)"""
-    try:
-        port_number = int(string)
-        if port_number < 1 or port_number > 65535:
-            raise argparse.ArgumentTypeError("Port is out of range")
-    except ValueError:
-        raise argparse.ArgumentTypeError("Port is not an integer")
-    return port_number
-
-
-def ip_optional_port(string, default_port, ip_callback):
-    """Convert a string into IP and Port pair. If port was absent then use
-    default_port as the port. The third argument is a callback that verifies
-    whether IP address is given in correct format."""
-    value = string.split(':')
-    if len(value) == 1:
-        return (ip_callback(value[0]), default_port)
-    elif len(value) == 2:
-        return (ip_callback(value[0]), port(value[1]))
-    else:
-        raise argparse.ArgumentTypeError("IP address from the optional Port "
-                                         "must be colon-separated")
-
-
-def ip_optional_port_port(string, default_port1, default_port2, ip_callback):
-    """Convert a string into IP, Port1, Port2 tuple. If any of ports were
-     missing, then default ports will be used. The fourth argument is a
-     callback that verifies whether IP address is given in the expected
-     format."""
-    value = string.split(':')
-    if len(value) == 1:
-        return (ip_callback(value[0]), default_port1, default_port2)
-    elif len(value) == 2:
-        return (ip_callback(value[0]), port(value[1]), default_port2)
-    elif len(value) == 3:
-        return (ip_callback(value[0]), port(value[1]), port(value[2]))
-    else:
-        raise argparse.ArgumentTypeError("Expected IP address and at most "
-                                         "two colon-separated ports")
-
-
-def vlan_tag(string):
-    """
-    This function verifies whether given string is a correct VLAN tag.
-    """
-    try:
-        value = int(string)
-    except ValueError:
-        raise argparse.ArgumentTypeError("VLAN tag is not a valid integer")
-    if value < 1 or value > 4094:
-        raise argparse.ArgumentTypeError("Not a valid VLAN tag. "
-                                         "VLAN tag should be in the "
-                                         "range 1..4094.")
-    return string
-
-
-def server_endpoint(string):
-    """Converts a string OuterIP[:OuterPort],InnerIP[/Mask][:InnerPort]
-    into a 4-tuple, where:
-    1. First element is OuterIP
-    2. Second element is OuterPort (if omitted will use default value 15531)
-    3  Third element is InnerIP with optional mask
-    4. Fourth element is InnerPort (if omitted will use default value 15532)
-    """
-    value = string.split(',')
-    if len(value) == 2:
-        ret1 = ip_optional_port(value[0], CONTROL_PORT, ip_address)
-        ret2 = ip_optional_port(value[1], DATA_PORT, ip_optional_mask)
-        return (ret1[0], ret1[1], ret2[0], ret2[1])
-    else:
-        raise argparse.ArgumentTypeError("OuterIP:OuterPort and InnerIP/Mask:"
-                                         "InnerPort must be comma separated")
-
-
-class UniqueServerAction(argparse.Action):
-    """
-    This custom action class will prevent user from entering multiple ovs-test
-    servers with the same OuterIP. If there is an server with 127.0.0.1 outer
-    IP address then it will be inserted in the front of the list.
-    """
-    def __call__(self, parser, namespace, values, option_string=None):
-        outer_ips = set()
-        endpoints = []
-        for server in values:
-            try:
-                endpoint = server_endpoint(server)
-            except argparse.ArgumentTypeError:
-                raise argparse.ArgumentError(self, str(sys.exc_info()[1]))
-            if endpoint[0] in outer_ips:
-                raise argparse.ArgumentError(self, "Duplicate OuterIPs found")
-            else:
-                outer_ips.add(endpoint[0])
-                if endpoint[0] == "127.0.0.1":
-                    endpoints.insert(0, endpoint)
-                else:
-                    endpoints.append(endpoint)
-        setattr(namespace, self.dest, endpoints)
-
-
-def bandwidth(string):
-    """Convert a string (given in bits/second with optional magnitude for
-    units) into a long (bytes/second)"""
-    if re.match("^[1-9][0-9]*[MK]?$", string) is None:
-        raise argparse.ArgumentTypeError("Not a valid target bandwidth")
-    bwidth = string.replace("M", "000000")
-    bwidth = bwidth.replace("K", "000")
-    return int(bwidth) / 8  # Convert from bits to bytes
-
-
-def tunnel_types(string):
-    """
-    This function converts a string into a list that contains all tunnel types
-    that user intended to test.
-    """
-    return string.split(',')
-
-
-def l3_endpoint_client(string):
-    """
-    This function parses command line argument string in
-    remoteIP,localInnerIP[/mask][:ControlPort[:TestPort]],remoteInnerIP[:
-    ControlPort[:TestPort]] format.
-    """
-    try:
-        remote_ip, me, he = string.split(',')
-    except ValueError:
-        raise argparse.ArgumentTypeError("All 3 IP addresses must be comma "
-                                         "separated.")
-    r = (ip_address(remote_ip),
-         ip_optional_port_port(me, CONTROL_PORT, DATA_PORT, ip_optional_mask),
-         ip_optional_port_port(he, CONTROL_PORT, DATA_PORT, ip_address))
-    return r
-
-
-def l3_endpoint_server(string):
-    """
-    This function parses a command line argument string in
-    remoteIP,localInnerIP[/mask][:ControlPort] format.
-    """
-    try:
-        remote_ip, me = string.split(',')
-    except ValueError:
-        raise argparse.ArgumentTypeError("Both IP addresses must be comma "
-                                         "separated.")
-    return (ip_address(remote_ip),
-            ip_optional_port(me, CONTROL_PORT, ip_optional_mask))
-
-
-def ovs_initialize_args():
-    """
-    Initialize argument parsing for ovs-test utility.
-    """
-    parser = argparse.ArgumentParser(description='Test connectivity '
-                                                'between two Open vSwitches.')
-
-    parser.add_argument('-v', '--version', action='version',
-                version='ovs-test (Open vSwitch) @VERSION@')
-
-    parser.add_argument("-b", "--bandwidth", action='store',
-                dest="targetBandwidth", default="1M", type=bandwidth,
-                help='Target bandwidth for UDP tests in bits/second. Use '
-                'postfix M or K to alter unit magnitude.')
-    parser.add_argument("-i", "--interval", action='store',
-                dest="testInterval", default=5, type=int,
-                help='Interval for how long to run each test in seconds.')
-
-    parser.add_argument("-t", "--tunnel-modes", action='store',
-                dest="tunnelModes", default=(), type=tunnel_types,
-                help='Do L3 tests with the given tunnel modes.')
-    parser.add_argument("-l", "--vlan-tag", action='store',
-                dest="vlanTag", default=None, type=vlan_tag,
-                help='Do VLAN tests and use the given VLAN tag.')
-    parser.add_argument("-d", "--direct", action='store_true',
-                dest="direct", default=None,
-                help='Do direct tests between both ovs-test servers.')
-
-    group = parser.add_mutually_exclusive_group(required=True)
-    group.add_argument("-s", "--server", action="store", dest="port",
-                type=port,
-                help='Run in server mode and wait for the client to '
-                'connect to this port.')
-    group.add_argument('-c', "--client", nargs=2,
-                dest="servers", action=UniqueServerAction,
-                metavar=("SERVER1", "SERVER2"),
-                help='Run in client mode and do tests between these '
-                'two ovs-test servers. Each server must be specified in '
-                'following format - OuterIP:OuterPort,InnerIP[/mask] '
-                ':InnerPort. It is possible to start local instance of '
-                'ovs-test server in the client mode by using 127.0.0.1 as '
-                'OuterIP.')
-    return parser.parse_args()
-
-
-def l3_initialize_args():
-    """
-    Initialize argument parsing for ovs-l3ping utility.
-    """
-    parser = argparse.ArgumentParser(description='Test L3 tunnel '
-                        'connectivity between two Open vSwitch instances.')
-
-    parser.add_argument('-v', '--version', action='version',
-                version='ovs-l3ping (Open vSwitch) @VERSION@')
-
-    parser.add_argument("-b", "--bandwidth", action='store',
-                dest="targetBandwidth", default="1M", type=bandwidth,
-                help='Target bandwidth for UDP tests in bits/second. Use '
-                'postfix M or K to alter unit magnitude.')
-    parser.add_argument("-i", "--interval", action='store',
-                dest="testInterval", default=5, type=int,
-                help='Interval for how long to run each test in seconds.')
-
-    parser.add_argument("-t", "--tunnel-mode", action='store',
-                dest="tunnelMode", required=True,
-                help='Do L3 tests with this tunnel type.')
-
-    group = parser.add_mutually_exclusive_group(required=True)
-    group.add_argument("-s", "--server", action="store", dest="server",
-                metavar="TUNNELIP,SERVER",
-                type=l3_endpoint_server,
-                help='Run in server mode and wait for the client to '
-                'connect.')
-    group.add_argument('-c', "--client", action="store", dest="client",
-                metavar="TUNNELIP,CLIENT,SERVER",
-                type=l3_endpoint_client,
-                help='Run in client mode and connect to the server.')
-    return parser.parse_args()
diff --git a/python/ovstest/rpcserver.py b/python/ovstest/rpcserver.py
deleted file mode 100644
index ab5b7e89e..000000000
--- a/python/ovstest/rpcserver.py
+++ /dev/null
@@ -1,383 +0,0 @@ 
-# Copyright (c) 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-rpcserver is an XML RPC server that allows RPC client to initiate tests
-"""
-
-from __future__ import print_function
-
-import sys
-
-import exceptions
-
-import six.moves.xmlrpc_client
-
-import tcp
-
-from twisted.internet import reactor
-from twisted.internet.error import CannotListenError
-from twisted.web import server
-from twisted.web import xmlrpc
-
-import udp
-
-import util
-
-import vswitch
-
-
-class TestArena(xmlrpc.XMLRPC):
-    """
-    This class contains all the functions that ovs-test client will call
-    remotely. The caller is responsible to use designated handleIds
-    for designated methods (e.g. do not mix UDP and TCP handles).
-    """
-
-    def __init__(self):
-        xmlrpc.XMLRPC.__init__(self, allowNone=True)
-        self.handle_id = 1
-        self.handle_map = {}
-        self.bridges = set()
-        self.pbridges = set()
-        self.ports = set()
-        self.request = None
-
-    def __acquire_handle(self, value):
-        """
-        Allocates new handle and assigns value object to it
-        """
-        handle = self.handle_id
-        self.handle_map[handle] = value
-        self.handle_id += 1
-        return handle
-
-    def __get_handle_resources(self, handle):
-        """
-        Return resources that were assigned to handle
-        """
-        return self.handle_map[handle]
-
-    def __delete_handle(self, handle):
-        """
-        Releases handle from handle_map
-        """
-        del self.handle_map[handle]
-
-    def cleanup(self):
-        """
-        Delete all remaining bridges and ports if ovs-test client did not had
-        a chance to remove them. It is necessary to call this function if
-        ovs-test server is abruptly terminated when doing the tests.
-        """
-        for port in self.ports:
-            # Remove ports that were added to existing bridges
-            vswitch.ovs_vsctl_del_port_from_bridge(port)
-
-        for bridge in self.bridges:
-            # Remove bridges that were added for L3 tests
-            vswitch.ovs_vsctl_del_bridge(bridge)
-
-        for pbridge in self.pbridges:
-            # Remove bridges that were added for VLAN tests
-            vswitch.ovs_vsctl_del_pbridge(pbridge[0], pbridge[1])
-
-    def render(self, request):
-        """
-        This method overrides the original XMLRPC.render method so that it
-        would be possible to get the XML RPC client IP address from the
-        request object.
-        """
-        self.request = request
-        return xmlrpc.XMLRPC.render(self, request)
-
-    def xmlrpc_get_my_address(self):
-        """
-        Returns the RPC client's IP address.
-        """
-        return self.request.getClientIP()
-
-    def xmlrpc_get_my_address_from(self, his_ip, his_port):
-        """
-        Returns the ovs-test server IP address that the other ovs-test server
-        with the given ip will see.
-        """
-        server1 = six.moves.xmlrpc_client.Server("http://%s:%u/" %
-                                                 (his_ip, his_port))
-        return server1.get_my_address()
-
-    def xmlrpc_create_udp_listener(self, port):
-        """
-        Creates a UDP listener that will receive packets from UDP sender
-        """
-        try:
-            listener = udp.UdpListener()
-            reactor.listenUDP(port, listener)
-            handle_id = self.__acquire_handle(listener)
-        except CannotListenError:
-            return -1
-        return handle_id
-
-    def xmlrpc_create_udp_sender(self, host, count, size, duration):
-        """
-        Send UDP datagrams to UDP listener
-        """
-        sender = udp.UdpSender(tuple(host), count, size, duration)
-        reactor.listenUDP(0, sender)
-        handle_id = self.__acquire_handle(sender)
-        return handle_id
-
-    def xmlrpc_get_udp_listener_results(self, handle):
-        """
-        Returns number of datagrams that were received
-        """
-        listener = self.__get_handle_resources(handle)
-        return listener.getResults()
-
-    def xmlrpc_get_udp_sender_results(self, handle):
-        """
-        Returns number of datagrams that were sent
-        """
-        sender = self.__get_handle_resources(handle)
-        return sender.getResults()
-
-    def xmlrpc_close_udp_listener(self, handle):
-        """
-        Releases UdpListener and all its resources
-        """
-        listener = self.__get_handle_resources(handle)
-        listener.transport.stopListening()
-        self.__delete_handle(handle)
-        return 0
-
-    def xmlrpc_close_udp_sender(self, handle):
-        """
-        Releases UdpSender and all its resources
-        """
-        sender = self.__get_handle_resources(handle)
-        sender.transport.stopListening()
-        self.__delete_handle(handle)
-        return 0
-
-    def xmlrpc_create_tcp_listener(self, port):
-        """
-        Creates a TcpListener that will accept connection from TcpSender
-        """
-        try:
-            listener = tcp.TcpListenerFactory()
-            port = reactor.listenTCP(port, listener)
-            handle_id = self.__acquire_handle((listener, port))
-            return handle_id
-        except CannotListenError:
-            return -1
-
-    def xmlrpc_create_tcp_sender(self, his_ip, his_port, duration):
-        """
-        Creates a TcpSender that will connect to TcpListener
-        """
-        sender = tcp.TcpSenderFactory(duration)
-        connector = reactor.connectTCP(his_ip, his_port, sender)
-        handle_id = self.__acquire_handle((sender, connector))
-        return handle_id
-
-    def xmlrpc_get_tcp_listener_results(self, handle):
-        """
-        Returns number of bytes received
-        """
-        (listener, _) = self.__get_handle_resources(handle)
-        return listener.getResults()
-
-    def xmlrpc_get_tcp_sender_results(self, handle):
-        """
-        Returns number of bytes sent
-        """
-        (sender, _) = self.__get_handle_resources(handle)
-        return sender.getResults()
-
-    def xmlrpc_close_tcp_listener(self, handle):
-        """
-        Releases TcpListener and all its resources
-        """
-        try:
-            (_, port) = self.__get_handle_resources(handle)
-            port.loseConnection()
-            self.__delete_handle(handle)
-        except exceptions.KeyError:
-            return -1
-        return 0
-
-    def xmlrpc_close_tcp_sender(self, handle):
-        """
-        Releases TcpSender and all its resources
-        """
-        try:
-            (_, connector) = self.__get_handle_resources(handle)
-            connector.disconnect()
-            self.__delete_handle(handle)
-        except exceptions.KeyError:
-            return -1
-        return 0
-
-    def xmlrpc_create_test_bridge(self, bridge, iface):
-        """
-        This function creates a physical bridge from iface. It moves the
-        IP configuration from the physical interface to the bridge.
-        """
-        ret = vswitch.ovs_vsctl_add_bridge(bridge)
-        if ret == 0:
-            self.pbridges.add((bridge, iface))
-            util.interface_up(bridge)
-            (ip_addr, mask) = util.interface_get_ip(iface)
-            util.interface_assign_ip(bridge, ip_addr, mask)
-            util.interface_up(bridge)
-            util.move_routes(iface, bridge)
-            util.interface_remove_ip(iface, ip_addr, mask)
-            ret = vswitch.ovs_vsctl_add_port_to_bridge(bridge, iface)
-            if ret == 0:
-                self.ports.add(iface)
-            else:
-                util.interface_assign_ip(iface, ip_addr, mask)
-                util.interface_up(iface)
-                util.move_routes(bridge, iface)
-                vswitch.ovs_vsctl_del_bridge(bridge)
-
-        return ret
-
-    def xmlrpc_del_test_bridge(self, bridge, iface):
-        """
-        This function deletes the test bridge and moves its IP configuration
-        back to the physical interface.
-        """
-        ret = vswitch.ovs_vsctl_del_pbridge(bridge, iface)
-        self.pbridges.discard((bridge, iface))
-        return ret
-
-    def xmlrpc_get_iface_from_bridge(self, brname):
-        """
-        Tries to figure out physical interface from bridge.
-        """
-        return vswitch.ovs_get_physical_interface(brname)
-
-    def xmlrpc_create_bridge(self, brname):
-        """
-        Creates an OVS bridge.
-        """
-        ret = vswitch.ovs_vsctl_add_bridge(brname)
-        if ret == 0:
-            self.bridges.add(brname)
-        return ret
-
-    def xmlrpc_del_bridge(self, brname):
-        """
-        Deletes an OVS bridge.
-        """
-        ret = vswitch.ovs_vsctl_del_bridge(brname)
-        if ret == 0:
-            self.bridges.discard(brname)
-        return ret
-
-    def xmlrpc_is_ovs_bridge(self, bridge):
-        """
-        This function verifies whether given interface is an ovs bridge.
-        """
-        return vswitch.ovs_vsctl_is_ovs_bridge(bridge)
-
-    def xmlrpc_add_port_to_bridge(self, bridge, port):
-        """
-        Adds a port to the OVS bridge.
-        """
-        ret = vswitch.ovs_vsctl_add_port_to_bridge(bridge, port)
-        if ret == 0:
-            self.ports.add(port)
-        return ret
-
-    def xmlrpc_del_port_from_bridge(self, port):
-        """
-        Removes a port from OVS bridge.
-        """
-        ret = vswitch.ovs_vsctl_del_port_from_bridge(port)
-        if ret == 0:
-            self.ports.discard(port)
-        return ret
-
-    def xmlrpc_ovs_vsctl_set(self, table, record, column, key, value):
-        """
-        This function allows to alter OVS database.
-        """
-        return vswitch.ovs_vsctl_set(table, record, column, key, value)
-
-    def xmlrpc_interface_up(self, iface):
-        """
-        This function brings up given interface.
-        """
-        return util.interface_up(iface)
-
-    def xmlrpc_interface_assign_ip(self, iface, ip_address, mask):
-        """
-        This function allows to assing ip address to the given interface.
-        """
-        return util.interface_assign_ip(iface, ip_address, mask)
-
-    def xmlrpc_interface_remove_ip(self, iface, ip_address, mask):
-        """
-        This function allows to assing ip address to the given interface.
-        """
-        return util.interface_remove_ip(iface, ip_address, mask)
-
-    def xmlrpc_get_interface(self, address):
-        """
-        Finds first interface that has given address
-        """
-        return util.get_interface(address)
-
-    def xmlrpc_get_interface_mtu(self, iface):
-        """
-        Returns MTU of the given interface
-        """
-        return util.get_interface_mtu(iface)
-
-    def xmlrpc_uname(self):
-        """
-        Return information about running kernel
-        """
-        return util.uname()
-
-    def xmlrpc_get_driver(self, iface):
-        """
-        Returns driver version
-        """
-        return util.get_driver(iface)
-
-    def xmlrpc_get_interface_from_routing_decision(self, ip):
-        """
-        Returns driver version
-        """
-        return util.get_interface_from_routing_decision(ip)
-
-
-def start_rpc_server(port):
-    """
-    This function creates a RPC server and adds it to the Twisted Reactor.
-    """
-    rpc_server = TestArena()
-    reactor.listenTCP(port, server.Site(rpc_server))
-    try:
-        print("Starting RPC server\n")
-        sys.stdout.flush()
-        # If this server was started from ovs-test client then we must flush
-        # STDOUT so that client would know that server is ready to accept
-        # XML RPC connections.
-        reactor.run()
-    finally:
-        rpc_server.cleanup()
diff --git a/python/ovstest/tcp.py b/python/ovstest/tcp.py
deleted file mode 100644
index c495717f2..000000000
--- a/python/ovstest/tcp.py
+++ /dev/null
@@ -1,120 +0,0 @@ 
-# Copyright (c) 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-tcp module contains listener and sender classes for TCP protocol
-"""
-
-import time
-
-from twisted.internet import interfaces
-from twisted.internet.protocol import ClientFactory, Factory, Protocol
-
-from zope.interface import implements
-
-
-class TcpListenerConnection(Protocol):
-    """
-    This per-connection class is instantiated each time sender connects
-    """
-    def __init__(self):
-        self.stats = 0
-
-    def dataReceived(self, data):
-        self.stats += len(data)
-
-    def connectionLost(self, reason):
-        self.factory.stats += self.stats
-
-
-class TcpListenerFactory(Factory):
-    """
-    This per-listening socket class is used to
-    instantiate TcpListenerConnections
-    """
-    protocol = TcpListenerConnection
-
-    def __init__(self):
-        self.stats = 0
-
-    def getResults(self):
-        """ returns the number of bytes received as string"""
-        # XML RPC does not support 64bit int (http://bugs.python.org/issue2985)
-        # so we have to convert the amount of bytes into a string
-        return str(self.stats)
-
-
-class Producer(object):
-    implements(interfaces.IPushProducer)
-    """
-    This producer class generates infinite byte stream for a specified time
-    duration
-    """
-    def __init__(self, proto, duration):
-        self.proto = proto
-        self.start = time.time()
-        self.produced = 0
-        self.paused = False
-        self.data = "X" * 65535
-        self.duration = duration
-
-    def pauseProducing(self):
-        """This function is called whenever write() to socket would block"""
-        self.paused = True
-
-    def resumeProducing(self):
-        """This function is called whenever socket becomes writable"""
-        self.paused = False
-        current = time.time()
-        while (not self.paused) and (current < self.start + self.duration):
-            self.proto.transport.write(self.data)
-            self.produced += len(self.data)
-            current = time.time()
-        if current >= self.start + self.duration:
-            self.proto.factory.stats += self.produced
-            self.proto.transport.unregisterProducer()
-            self.proto.transport.loseConnection()
-
-    def stopProducing(self):
-        pass
-
-
-class TcpSenderConnection(Protocol):
-    """
-    TCP connection instance class that sends all traffic at full speed.
-    """
-
-    def connectionMade(self):
-        producer = Producer(self, self.factory.duration)
-        self.transport.registerProducer(producer, True)
-        producer.resumeProducing()
-
-    def dataReceived(self, data):
-        self.transport.loseConnection()
-
-
-class TcpSenderFactory(ClientFactory):
-    """
-    This factory is responsible to instantiate TcpSenderConnection classes
-    each time sender initiates connection
-    """
-    protocol = TcpSenderConnection
-
-    def __init__(self, duration):
-        self.duration = duration
-        self.stats = 0
-
-    def getResults(self):
-        """Returns amount of bytes sent to the Listener (as a string)"""
-        return str(self.stats)
diff --git a/python/ovstest/tests.py b/python/ovstest/tests.py
deleted file mode 100644
index 6de3cc3af..000000000
--- a/python/ovstest/tests.py
+++ /dev/null
@@ -1,250 +0,0 @@ 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from __future__ import print_function
-
-import math
-import time
-
-import ovstest.util as util
-
-DEFAULT_TEST_BRIDGE = "ovstestbr0"
-DEFAULT_TEST_PORT = "ovstestport0"
-DEFAULT_TEST_TUN = "ovstestport1"
-NO_HANDLE = -1
-
-
-def do_udp_tests(receiver, sender, tbwidth, duration, port_sizes):
-    """Schedule UDP tests between receiver and sender"""
-    server1 = util.rpc_client(receiver[0], receiver[1])
-    server2 = util.rpc_client(sender[0], sender[1])
-
-    udpformat = '{0:>15} {1:>15} {2:>15} {3:>15} {4:>15}'
-
-    print("UDP test from %s:%u to %s:%u with target bandwidth %s" %
-                            (sender[0], sender[1], receiver[0], receiver[1],
-                             util.bandwidth_to_string(tbwidth)))
-    print(udpformat.format("Datagram Size", "Snt Datagrams", "Rcv Datagrams",
-                            "Datagram Loss", "Bandwidth"))
-
-    for size in port_sizes:
-        listen_handle = NO_HANDLE
-        send_handle = NO_HANDLE
-        try:
-            packetcnt = (tbwidth * duration) / size
-
-            listen_handle = server1.create_udp_listener(receiver[3])
-            if listen_handle == NO_HANDLE:
-                print("Server could not open UDP listening socket on port"
-                      " %u. Try to restart the server.\n" % receiver[3])
-                return
-            send_handle = server2.create_udp_sender(
-                                            (util.ip_from_cidr(receiver[2]),
-                                             receiver[3]), packetcnt, size,
-                                             duration)
-
-            # Using sleep here because there is no other synchronization
-            # source that would notify us when all sent packets were received
-            time.sleep(duration + 1)
-
-            rcv_packets = server1.get_udp_listener_results(listen_handle)
-            snt_packets = server2.get_udp_sender_results(send_handle)
-
-            loss = math.ceil(((snt_packets - rcv_packets) * 10000.0) /
-                                                        snt_packets) / 100
-            bwidth = (rcv_packets * size) / duration
-
-            print(udpformat.format(size, snt_packets, rcv_packets,
-                          '%.2f%%' % loss, util.bandwidth_to_string(bwidth)))
-        finally:
-            if listen_handle != NO_HANDLE:
-                server1.close_udp_listener(listen_handle)
-            if send_handle != NO_HANDLE:
-                server2.close_udp_sender(send_handle)
-    print("\n")
-
-
-def do_tcp_tests(receiver, sender, duration):
-    """Schedule TCP tests between receiver and sender"""
-    server1 = util.rpc_client(receiver[0], receiver[1])
-    server2 = util.rpc_client(sender[0], sender[1])
-
-    tcpformat = '{0:>15} {1:>15} {2:>15}'
-    print("TCP test from %s:%u to %s:%u (full speed)" % (sender[0], sender[1],
-                                                    receiver[0], receiver[1]))
-    print(tcpformat.format("Snt Bytes", "Rcv Bytes", "Bandwidth"))
-
-    listen_handle = NO_HANDLE
-    send_handle = NO_HANDLE
-    try:
-        listen_handle = server1.create_tcp_listener(receiver[3])
-        if listen_handle == NO_HANDLE:
-            print("Server was unable to open TCP listening socket on port"
-                  " %u. Try to restart the server.\n" % receiver[3])
-            return
-        send_handle = server2.create_tcp_sender(util.ip_from_cidr(receiver[2]),
-                                                receiver[3], duration)
-
-        time.sleep(duration + 1)
-
-        rcv_bytes = int(server1.get_tcp_listener_results(listen_handle))
-        snt_bytes = int(server2.get_tcp_sender_results(send_handle))
-
-        bwidth = rcv_bytes / duration
-
-        print(tcpformat.format(snt_bytes, rcv_bytes,
-                               util.bandwidth_to_string(bwidth)))
-    finally:
-        if listen_handle != NO_HANDLE:
-            server1.close_tcp_listener(listen_handle)
-        if send_handle != NO_HANDLE:
-            server2.close_tcp_sender(send_handle)
-    print("\n")
-
-
-def do_l3_tests(node1, node2, bandwidth, duration, ps, type):
-    """
-    Do L3 tunneling tests. Each node is given as 4 tuple - physical
-    interface IP, control port, test IP and test port.
-    """
-    server1 = util.rpc_client(node1[0], node1[1])
-    server2 = util.rpc_client(node2[0], node2[1])
-    servers_with_bridges = []
-    try:
-        server1.create_bridge(DEFAULT_TEST_BRIDGE)
-        servers_with_bridges.append(server1)
-        server2.create_bridge(DEFAULT_TEST_BRIDGE)
-        servers_with_bridges.append(server2)
-
-        server1.interface_up(DEFAULT_TEST_BRIDGE)
-        server2.interface_up(DEFAULT_TEST_BRIDGE)
-
-        server1.interface_assign_ip(DEFAULT_TEST_BRIDGE, node1[2], None)
-        server2.interface_assign_ip(DEFAULT_TEST_BRIDGE, node2[2], None)
-
-        server1.add_port_to_bridge(DEFAULT_TEST_BRIDGE, DEFAULT_TEST_TUN)
-        server2.add_port_to_bridge(DEFAULT_TEST_BRIDGE, DEFAULT_TEST_TUN)
-
-        server1.ovs_vsctl_set("Interface", DEFAULT_TEST_TUN, "type",
-                              None, type)
-        server2.ovs_vsctl_set("Interface", DEFAULT_TEST_TUN, "type",
-                              None, type)
-        server1.ovs_vsctl_set("Interface", DEFAULT_TEST_TUN, "options",
-                              "remote_ip", node2[0])
-        server2.ovs_vsctl_set("Interface", DEFAULT_TEST_TUN, "options",
-                              "remote_ip", node1[0])
-
-        do_udp_tests(node1, node2, bandwidth, duration, ps)
-        do_udp_tests(node2, node1, bandwidth, duration, ps)
-        do_tcp_tests(node1, node2, duration)
-        do_tcp_tests(node2, node1, duration)
-
-    finally:
-        for server in servers_with_bridges:
-            server.del_bridge(DEFAULT_TEST_BRIDGE)
-
-
-def do_vlan_tests(node1, node2, bandwidth, duration, ps, tag):
-    """
-    Do VLAN tests between node1 and node2. Each node is given
-    as 4 tuple - physical interface IP, control port, test IP and
-    test port.
-    """
-    server1 = util.rpc_client(node1[0], node1[1])
-    server2 = util.rpc_client(node2[0], node2[1])
-
-    br_name1 = None
-    br_name2 = None
-
-    servers_with_test_ports = []
-
-    try:
-        interface_node1 = server1.get_interface(node1[0])
-        interface_node2 = server2.get_interface(node2[0])
-
-        if server1.is_ovs_bridge(interface_node1):
-            br_name1 = interface_node1
-        else:
-            br_name1 = DEFAULT_TEST_BRIDGE
-            server1.create_test_bridge(br_name1, interface_node1)
-
-        if server2.is_ovs_bridge(interface_node2):
-            br_name2 = interface_node2
-        else:
-            br_name2 = DEFAULT_TEST_BRIDGE
-            server2.create_test_bridge(br_name2, interface_node2)
-
-        server1.add_port_to_bridge(br_name1, DEFAULT_TEST_PORT)
-        servers_with_test_ports.append(server1)
-        server2.add_port_to_bridge(br_name2, DEFAULT_TEST_PORT)
-        servers_with_test_ports.append(server2)
-
-        server1.ovs_vsctl_set("Port", DEFAULT_TEST_PORT, "tag", None, tag)
-        server2.ovs_vsctl_set("Port", DEFAULT_TEST_PORT, "tag", None, tag)
-
-        server1.ovs_vsctl_set("Interface", DEFAULT_TEST_PORT, "type", None,
-                              "internal")
-        server2.ovs_vsctl_set("Interface", DEFAULT_TEST_PORT, "type", None,
-                              "internal")
-
-        server1.interface_assign_ip(DEFAULT_TEST_PORT, node1[2], None)
-        server2.interface_assign_ip(DEFAULT_TEST_PORT, node2[2], None)
-
-        server1.interface_up(DEFAULT_TEST_PORT)
-        server2.interface_up(DEFAULT_TEST_PORT)
-
-        do_udp_tests(node1, node2, bandwidth, duration, ps)
-        do_udp_tests(node2, node1, bandwidth, duration, ps)
-        do_tcp_tests(node1, node2, duration)
-        do_tcp_tests(node2, node1, duration)
-
-    finally:
-        for server in servers_with_test_ports:
-            server.del_port_from_bridge(DEFAULT_TEST_PORT)
-        if br_name1 == DEFAULT_TEST_BRIDGE:
-            server1.del_test_bridge(br_name1, interface_node1)
-        if br_name2 == DEFAULT_TEST_BRIDGE:
-            server2.del_test_bridge(br_name2, interface_node2)
-
-
-def do_direct_tests(node1, node2, bandwidth, duration, ps):
-    """
-    Do tests between outer IPs without involving Open vSwitch. Each
-    node is given as 4 tuple - physical interface IP, control port,
-    test IP and test port. Direct tests will use physical interface
-    IP as the test IP address.
-    """
-    n1 = (node1[0], node1[1], node1[0], node1[3])
-    n2 = (node2[0], node2[1], node2[0], node2[3])
-
-    do_udp_tests(n1, n2, bandwidth, duration, ps)
-    do_udp_tests(n2, n1, bandwidth, duration, ps)
-    do_tcp_tests(n1, n2, duration)
-    do_tcp_tests(n2, n1, duration)
-
-
-def configure_l3(conf, tunnel_mode):
-    """
-    This function creates a temporary test bridge and adds an L3 tunnel.
-    """
-    s = util.start_local_server(conf[1][1])
-    server = util.rpc_client("127.0.0.1", conf[1][1])
-    server.create_bridge(DEFAULT_TEST_BRIDGE)
-    server.add_port_to_bridge(DEFAULT_TEST_BRIDGE, DEFAULT_TEST_PORT)
-    server.interface_up(DEFAULT_TEST_BRIDGE)
-    server.interface_assign_ip(DEFAULT_TEST_BRIDGE, conf[1][0],
-                               None)
-    server.ovs_vsctl_set("Interface", DEFAULT_TEST_PORT, "type",
-                         None, tunnel_mode)
-    server.ovs_vsctl_set("Interface", DEFAULT_TEST_PORT, "options",
-                         "remote_ip", conf[0])
-    return s
diff --git a/python/ovstest/udp.py b/python/ovstest/udp.py
deleted file mode 100644
index acd28d575..000000000
--- a/python/ovstest/udp.py
+++ /dev/null
@@ -1,85 +0,0 @@ 
-# Copyright (c) 2011, 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-ovsudp contains listener and sender classes for UDP protocol
-"""
-
-import array
-import struct
-import time
-
-from twisted.internet.protocol import DatagramProtocol
-from twisted.internet.task import LoopingCall
-
-
-class UdpListener(DatagramProtocol):
-    """
-    Class that will listen for incoming UDP packets
-    """
-    def __init__(self):
-        self.stats = []
-
-    def datagramReceived(self, data, _1_2):
-        """This function is called each time datagram is received"""
-        try:
-            self.stats.append(struct.unpack_from("Q", data, 0))
-        except struct.error:
-            pass  # ignore packets that are less than 8 bytes of size
-
-    def getResults(self):
-        """Returns number of packets that were actually received"""
-        return len(self.stats)
-
-
-class UdpSender(DatagramProtocol):
-    """
-    Class that will send UDP packets to UDP Listener
-    """
-    def __init__(self, host, count, size, duration):
-        # LoopingCall does not know whether UDP socket is actually writable
-        self.looper = None
-        self.host = host
-        self.count = count
-        self.duration = duration
-        self.start = time.time()
-        self.sent = 0
-        self.data = array.array('c', 'X' * size)
-
-    def startProtocol(self):
-        self.looper = LoopingCall(self.sendData)
-        period = self.duration / float(self.count)
-        self.looper.start(period, now=False)
-
-    def stopProtocol(self):
-        if (self.looper is not None):
-            self.looper.stop()
-            self.looper = None
-
-    def datagramReceived(self, data, host_port):
-        pass
-
-    def sendData(self):
-        """This function is called from LoopingCall"""
-        if self.start + self.duration < time.time():
-            self.looper.stop()
-            self.looper = None
-
-        self.sent += 1
-        struct.pack_into('Q', self.data, 0, self.sent)
-        self.transport.write(self.data, self.host)
-
-    def getResults(self):
-        """Returns number of packets that were sent"""
-        return self.sent
diff --git a/python/ovstest/util.py b/python/ovstest/util.py
deleted file mode 100644
index db2ae989a..000000000
--- a/python/ovstest/util.py
+++ /dev/null
@@ -1,253 +0,0 @@ 
-# Copyright (c) 2011, 2012, 2017 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-util module contains some helper function
-"""
-import array
-import fcntl
-
-import os
-import re
-import select
-import signal
-import socket
-import struct
-import subprocess
-
-import exceptions
-
-import six.moves.xmlrpc_client
-from six.moves import range
-
-
-def str_ip(ip_address):
-    """
-    Converts an IP address from binary format to a string.
-    """
-    (x1, x2, x3, x4) = struct.unpack("BBBB", ip_address)
-    return ("%u.%u.%u.%u") % (x1, x2, x3, x4)
-
-
-def get_interface_mtu(iface):
-    """
-    Returns MTU of the given interface.
-    """
-    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-    indata = iface + ('\0' * (32 - len(iface)))
-    try:
-        outdata = fcntl.ioctl(s.fileno(), 0x8921, indata)  # socket.SIOCGIFMTU
-        mtu = struct.unpack("16si12x", outdata)[1]
-    except:
-        return 0
-
-    return mtu
-
-
-def get_interface(address):
-    """
-    Finds first interface that has given address
-    """
-    bytes = 256 * 32
-    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-    names = array.array('B', '\0' * bytes)
-    outbytes = struct.unpack('iL', fcntl.ioctl(
-        s.fileno(),
-        0x8912,  # SIOCGIFCONF
-        struct.pack('iL', bytes, names.buffer_info()[0])
-    ))[0]
-    namestr = names.tostring()
-
-    for i in range(0, outbytes, 40):
-        name = namestr[i:i + 16].split('\0', 1)[0]
-        if address == str_ip(namestr[i + 20:i + 24]):
-            return name
-    return None  # did not find interface we were looking for
-
-
-def uname():
-    os_info = os.uname()
-    return os_info[2]  # return only the kernel version number
-
-
-def start_process(args):
-    try:
-        p = subprocess.Popen(args,
-                             stdin=subprocess.PIPE,
-                             stdout=subprocess.PIPE,
-                             stderr=subprocess.PIPE)
-        out, err = p.communicate()
-        return (p.returncode, out, err)
-    except exceptions.OSError:
-        return (-1, None, None)
-
-
-def get_driver(iface):
-    ret, out, _err = start_process(["ethtool", "-i", iface])
-    if ret == 0:
-        lines = out.splitlines()
-        driver = "%s(%s)" % (lines[0], lines[1])  # driver name + version
-    else:
-        driver = None
-    return driver
-
-
-def interface_up(iface):
-    """
-    This function brings given iface up.
-    """
-    ret, _out, _err = start_process(["ip", "link", "set", iface, "up"])
-    return ret
-
-
-def interface_assign_ip(iface, ip_addr, mask):
-    """
-    This function adds an IP address to an interface. If mask is None
-    then a mask will be selected automatically.  In case of success
-    this function returns 0.
-    """
-    interface_ip_op(iface, ip_addr, mask, "add")
-
-
-def interface_remove_ip(iface, ip_addr, mask):
-    """
-    This function removes an IP address from an interface. If mask is
-    None then a mask will be selected automatically.  In case of
-    success this function returns 0.
-    """
-    interface_ip_op(iface, ip_addr, mask, "del")
-
-
-def interface_ip_op(iface, ip_addr, mask, op):
-    if mask is not None:
-        arg = "%s/%s" % (ip_addr, mask)
-    elif '/' in ip_addr:
-        arg = ip_addr
-    else:
-        (x1, x2, x3, x4) = struct.unpack("BBBB", socket.inet_aton(ip_addr))
-        if x1 < 128:
-            arg = "%s/8" % ip_addr
-        elif x1 < 192:
-            arg = "%s/16" % ip_addr
-        else:
-            arg = "%s/24" % ip_addr
-    ret, _out, _err = start_process(["ip", "addr", op, arg, "dev", iface])
-    return ret
-
-
-def interface_get_ip(iface):
-    """
-    This function returns tuple - ip and mask that was assigned to the
-    interface.
-    """
-    args = ["ip", "addr", "show", iface]
-    ret, out, _err = start_process(args)
-
-    if ret == 0:
-        ip = re.search(r'inet (\S+)/(\S+)', out)
-        if ip is not None:
-            return (ip.group(1), ip.group(2))
-    else:
-        return ret
-
-
-def move_routes(iface1, iface2):
-    """
-    This function moves routes from iface1 to iface2.
-    """
-    args = ["ip", "route", "show", "dev", iface1]
-    ret, out, _err = start_process(args)
-    if ret == 0:
-        for route in out.splitlines():
-            args = ["ip", "route", "replace", "dev", iface2] + route.split()
-            start_process(args)
-
-
-def get_interface_from_routing_decision(ip):
-    """
-    This function returns the interface through which the given ip address
-    is reachable.
-    """
-    args = ["ip", "route", "get", ip]
-    ret, out, _err = start_process(args)
-    if ret == 0:
-        iface = re.search(r'dev (\S+)', out)
-        if iface:
-            return iface.group(1)
-    return None
-
-
-def rpc_client(ip, port):
-    return six.moves.xmlrpc_client.Server("http://%s:%u/" % (ip, port),
-                                          allow_none=True)
-
-
-def sigint_intercept():
-    """
-    Intercept SIGINT from child (the local ovs-test server process).
-    """
-    signal.signal(signal.SIGINT, signal.SIG_IGN)
-
-
-def start_local_server(port):
-    """
-    This function spawns an ovs-test server that listens on specified port
-    and blocks till the spawned ovs-test server is ready to accept XML RPC
-    connections.
-    """
-    p = subprocess.Popen(["ovs-test", "-s", str(port)],
-                         stdout=subprocess.PIPE, stderr=subprocess.PIPE,
-                         preexec_fn=sigint_intercept)
-    fcntl.fcntl(p.stdout.fileno(), fcntl.F_SETFL,
-        fcntl.fcntl(p.stdout.fileno(), fcntl.F_GETFL) | os.O_NONBLOCK)
-
-    while p.poll() is None:
-        fd = select.select([p.stdout.fileno()], [], [])[0]
-        if fd:
-            out = p.stdout.readline()
-            if out.startswith("Starting RPC server"):
-                break
-    if p.poll() is not None:
-        raise RuntimeError("Couldn't start local instance of ovs-test server")
-    return p
-
-
-def get_datagram_sizes(mtu1, mtu2):
-    """
-    This function calculates all the "interesting" datagram sizes so that
-    we test both - receive and send side with different packets sizes.
-    """
-    s1 = set([8, mtu1 - 100, mtu1 - 28, mtu1])
-    s2 = set([8, mtu2 - 100, mtu2 - 28, mtu2])
-    return sorted(s1.union(s2))
-
-
-def ip_from_cidr(string):
-    """
-    This function removes the netmask (if present) from the given string and
-    returns the IP address.
-    """
-    token = string.split("/")
-    return token[0]
-
-
-def bandwidth_to_string(bwidth):
-    """Convert bandwidth from long to string and add units."""
-    bwidth = bwidth * 8  # Convert back to bits/second
-    if bwidth >= 10000000:
-        return str(int(bwidth / 1000000)) + "Mbps"
-    elif bwidth > 10000:
-        return str(int(bwidth / 1000)) + "Kbps"
-    else:
-        return str(int(bwidth)) + "bps"
diff --git a/python/ovstest/vswitch.py b/python/ovstest/vswitch.py
deleted file mode 100644
index 9d5b5cffd..000000000
--- a/python/ovstest/vswitch.py
+++ /dev/null
@@ -1,107 +0,0 @@ 
-# Copyright (c) 2012 Nicira, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""
-vswitch module allows its callers to interact with OVS DB.
-"""
-import util
-
-
-def ovs_vsctl_add_bridge(bridge):
-    """
-    This function creates an OVS bridge.
-    """
-    ret, _out, _err = util.start_process(["ovs-vsctl", "add-br", bridge])
-    return ret
-
-
-def ovs_vsctl_del_bridge(bridge):
-    """
-    This function deletes the OVS bridge.
-    """
-    ret, _out, _err = util.start_process(["ovs-vsctl", "del-br", bridge])
-    return ret
-
-
-def ovs_vsctl_del_pbridge(bridge, iface):
-    """
-    This function deletes the OVS bridge and assigns the bridge IP address
-    back to the iface.
-    """
-    (ip_addr, mask) = util.interface_get_ip(bridge)
-    util.interface_assign_ip(iface, ip_addr, mask)
-    util.interface_up(iface)
-    util.move_routes(bridge, iface)
-    return ovs_vsctl_del_bridge(bridge)
-
-
-def ovs_vsctl_is_ovs_bridge(bridge):
-    """
-    This function verifies whether given port is an OVS bridge. If it is an
-    OVS bridge then it will return True.
-    """
-    ret, _out, _err = util.start_process(["ovs-vsctl", "br-exists", bridge])
-    return ret == 0
-
-
-def ovs_vsctl_add_port_to_bridge(bridge, iface):
-    """
-    This function adds given interface to the bridge.
-    """
-    ret, _out, _err = util.start_process(["ovs-vsctl", "add-port", bridge,
-                                          iface])
-    return ret
-
-
-def ovs_vsctl_del_port_from_bridge(port):
-    """
-    This function removes given port from a OVS bridge.
-    """
-    ret, _out, _err = util.start_process(["ovs-vsctl", "del-port", port])
-    return ret
-
-
-def ovs_vsctl_set(table, record, column, key, value):
-    """
-    This function allows to alter the OVS database. If column is a map, then
-    caller should also set the key, otherwise the key should be left as an
-    empty string.
-    """
-    if key is None:
-        index = column
-    else:
-        index = "%s:%s" % (column, key)
-    index_value = "%s=%s" % (index, value)
-    ret, _out, _err = util.start_process(["ovs-vsctl", "set", table, record,
-                                          index_value])
-    return ret
-
-
-def ovs_get_physical_interface(bridge):
-    """
-    This function tries to figure out which is the physical interface that
-    belongs to the bridge. If there are multiple physical interfaces assigned
-    to this bridge then it will return the first match.
-    """
-    ret, out, _err = util.start_process(["ovs-vsctl", "list-ifaces", bridge])
-
-    if ret == 0:
-        ifaces = out.splitlines()
-        for iface in ifaces:
-            ret, out, _err = util.start_process(["ovs-vsctl", "get",
-                                                 "Interface", iface, "type"])
-            if ret == 0:
-                if ('""' in out) or ('system' in out):
-                    return iface  # this should be the physical interface
-    return None
diff --git a/python/setup.py b/python/setup.py
deleted file mode 100644
index b7252800c..000000000
--- a/python/setup.py
+++ /dev/null
@@ -1,102 +0,0 @@ 
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from __future__ import print_function
-
-import sys
-
-from distutils.command.build_ext import build_ext
-from distutils.errors import CCompilerError, DistutilsExecError, \
-    DistutilsPlatformError
-
-import setuptools
-
-VERSION = "unknown"
-
-try:
-    # Try to set the version from the generated ovs/version.py
-    exec(open("ovs/version.py").read())
-except IOError:
-    print("Ensure version.py is created by running make python/ovs/version.py",
-          file=sys.stderr)
-    sys.exit(-1)
-
-ext_errors = (CCompilerError, DistutilsExecError, DistutilsPlatformError)
-if sys.platform == 'win32':
-    ext_errors += (IOError, ValueError)
-
-
-class BuildFailed(Exception):
-    pass
-
-
-class try_build_ext(build_ext):
-    # This class allows C extension building to fail
-    # NOTE: build_ext is not a new-style class
-
-    def run(self):
-        try:
-            build_ext.run(self)
-        except DistutilsPlatformError:
-            raise BuildFailed()
-
-    def build_extension(self, ext):
-        try:
-            build_ext.build_extension(self, ext)
-        except ext_errors:
-            raise BuildFailed()
-
-
-setup_args = dict(
-    name='ovs',
-    description='Open vSwitch library',
-    version=VERSION,
-    url='http://www.openvswitch.org/',
-    author='Open vSwitch',
-    author_email='dev@openvswitch.org',
-    packages=['ovs', 'ovs.compat', 'ovs.compat.sortedcontainers',
-              'ovs.db', 'ovs.unixctl'],
-    keywords=['openvswitch', 'ovs', 'OVSDB'],
-    license='Apache 2.0',
-    classifiers=[
-        'Development Status :: 5 - Production/Stable',
-        'Topic :: Database :: Front-Ends',
-        'Topic :: Software Development :: Libraries :: Python Modules',
-        'Topic :: System :: Networking',
-        'License :: OSI Approved :: Apache Software License',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-    ],
-    ext_modules=[setuptools.Extension("ovs._json", sources=["ovs/_json.c"],
-                                      libraries=['openvswitch'])],
-    cmdclass={'build_ext': try_build_ext},
-    install_requires=['sortedcontainers'],
-    extras_require={':sys_platform == "win32"': ['pywin32 >= 1.0']},
-)
-
-try:
-    setuptools.setup(**setup_args)
-except BuildFailed:
-    BUILD_EXT_WARNING = ("WARNING: The C extension could not be compiled, "
-                         "speedups are not enabled.")
-    print("*" * 75)
-    print(BUILD_EXT_WARNING)
-    print("Failure information, if any, is above.")
-    print("Retrying the build without the C extension.")
-    print("*" * 75)
-
-    del(setup_args['cmdclass'])
-    del(setup_args['ext_modules'])</