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[ovs-dev,v10,1/6] Export `VLOG_WARN` and `VLOG_ERR` from libovn for use in ddlog

Message ID 20210218011221.1354839-2-blp@ovn.org
State Superseded
Headers show
Series Add DDlog implementation of ovn-northd | expand

Commit Message

Ben Pfaff Feb. 18, 2021, 1:12 a.m. UTC
From: Leonid Ryzhyk <lryzhyk@vmware.com>

Export `ddlog_warn` and `ddlog_err` functions that are just wrappers
around `VLOG_WARN` and `VLOG_ERR`.  This is not ideal because the
functions are exported by `ovn_util.c` and the resulting log messages use
`ovn_util` as module name.  More importantly, these functions do not do
log rate limiting.

Signed-off-by: Leonid Ryzhyk <lryzhyk@vmware.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Dumitru Ceara <dceara@redhat.com>
 TODO.rst       |  6 ++++++
 lib/ovn-util.c | 15 +++++++++++++++
 lib/ovn-util.h |  5 +++++
 3 files changed, 26 insertions(+)


0-day Robot Feb. 18, 2021, 2 a.m. UTC | #1
Bleep bloop.  Greetings Ben Pfaff, I am a robot and I have tried out your patch.
Thanks for your contribution.

I encountered some error that I wasn't expecting.  See the details below.

WARNING: Unexpected sign-offs from developers who are not authors or co-authors or committers: Ben Pfaff <blp@ovn.org>
Lines checked: 77, Warnings: 1, Errors: 0

Please check this out.  If you feel there has been an error, please email aconole@redhat.com

0-day Robot
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diff --git a/TODO.rst b/TODO.rst
index c15815539f4f..ecfe62870fb0 100644
--- a/TODO.rst
+++ b/TODO.rst
@@ -153,6 +153,12 @@  OVN To-do List
   hashtable lookup in parse_port_group() which can be avoided when we are sure
   that the Southbound DB uses the new format.
+* ovn-northd-ddlog: Calls to warn() and err() from DDlog code would be
+  better refactored to use the Warning[] relation (and introduce an
+  Error[] relation once we want to issue some errors that way).  This
+  would be easier with some improvements in DDlog to more easily
+  output to multiple relations from a single production.
 * IP Multicast Relay
   * When connecting bridged logical switches (localnet) to logical routers
diff --git a/lib/ovn-util.c b/lib/ovn-util.c
index b6471063ef7e..a5e0ecd214b2 100644
--- a/lib/ovn-util.c
+++ b/lib/ovn-util.c
@@ -758,3 +758,18 @@  ovn_get_internal_version(void)
                      N_OVNACTS, OVN_INTERNAL_MINOR_VER);
+#ifdef DDLOG
+/* Callbacks used by the ddlog northd code to print warnings and errors. */
+ddlog_warn(const char *msg)
+    VLOG_WARN("%s", msg);
+ddlog_err(const char *msg)
+    VLOG_ERR("%s", msg);
diff --git a/lib/ovn-util.h b/lib/ovn-util.h
index 08234611838a..55c7bf382a95 100644
--- a/lib/ovn-util.h
+++ b/lib/ovn-util.h
@@ -261,4 +261,9 @@  BUILD_ASSERT_DECL(SCTP_INIT_CHUNK_LEN == sizeof(struct sctp_init_chunk));
 /* See RFC 4960 Sections 3.3.7 and 8.5.1 for information on this flag. */
 #define SCTP_ABORT_CHUNK_FLAG_T (1 << 0)
+#ifdef DDLOG
+void ddlog_warn(const char *msg);
+void ddlog_err(const char *msg);