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GET /api/patches/815918/?format=api
{ "id": 815918, "url": "http://patchwork.ozlabs.org/api/patches/815918/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/patch/20170919220125.32535-32-blp@ovn.org/", "project": { "id": 47, "url": "http://patchwork.ozlabs.org/api/projects/47/?format=api", "name": "Open vSwitch", "link_name": "openvswitch", "list_id": "ovs-dev.openvswitch.org", "list_email": "ovs-dev@openvswitch.org", "web_url": "http://openvswitch.org/", "scm_url": "git@github.com:openvswitch/ovs.git", "webscm_url": "https://github.com/openvswitch/ovs", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170919220125.32535-32-blp@ovn.org>", "list_archive_url": null, "date": "2017-09-19T22:01:04", "name": "[ovs-dev,RFC,31/52] ovsdb-idl: Document state machine.", "commit_ref": null, "pull_url": null, "state": "rfc", "archived": false, "hash": "1654342e89d1d9056c6bfd5e86a82d617c42dbcf", "submitter": { "id": 67603, "url": "http://patchwork.ozlabs.org/api/people/67603/?format=api", "name": "Ben Pfaff", "email": "blp@ovn.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/openvswitch/patch/20170919220125.32535-32-blp@ovn.org/mbox/", "series": [ { "id": 3975, "url": "http://patchwork.ozlabs.org/api/series/3975/?format=api", "web_url": "http://patchwork.ozlabs.org/project/openvswitch/list/?series=3975", "date": "2017-09-19T22:00:34", "name": "clustering implementation", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/3975/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/815918/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/815918/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<ovs-dev-bounces@openvswitch.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "dev@openvswitch.org" ], "Delivered-To": [ "patchwork-incoming@bilbo.ozlabs.org", "ovs-dev@mail.linuxfoundation.org" ], "Authentication-Results": "ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=openvswitch.org\n\t(client-ip=140.211.169.12; helo=mail.linuxfoundation.org;\n\tenvelope-from=ovs-dev-bounces@openvswitch.org;\n\treceiver=<UNKNOWN>)", "Received": [ "from mail.linuxfoundation.org (mail.linuxfoundation.org\n\t[140.211.169.12])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xxd6X0B0pz9sNV\n\tfor <incoming@patchwork.ozlabs.org>;\n\tWed, 20 Sep 2017 08:37:24 +1000 (AEST)", "from mail.linux-foundation.org (localhost [127.0.0.1])\n\tby mail.linuxfoundation.org (Postfix) with ESMTP id 195FADFE;\n\tTue, 19 Sep 2017 22:25:18 +0000 (UTC)", "from smtp1.linuxfoundation.org (smtp1.linux-foundation.org\n\t[172.17.192.35])\n\tby mail.linuxfoundation.org (Postfix) with ESMTPS id 16A62DE7\n\tfor <dev@openvswitch.org>; Tue, 19 Sep 2017 22:25:17 +0000 (UTC)", "from slow1-d.mail.gandi.net (slow1-d.mail.gandi.net\n\t[217.70.178.86])\n\tby smtp1.linuxfoundation.org (Postfix) with ESMTP id 8851C159\n\tfor <dev@openvswitch.org>; Tue, 19 Sep 2017 22:25:16 +0000 (UTC)", "from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net\n\t[217.70.183.196])\n\tby slow1-d.mail.gandi.net (Postfix) with ESMTP id D0010534ECB\n\tfor <dev@openvswitch.org>; Wed, 20 Sep 2017 00:02:21 +0200 (CEST)", "from sigabrt.benpfaff.org (unknown [208.91.2.3])\n\t(Authenticated sender: blp@ovn.org)\n\tby relay4-d.mail.gandi.net (Postfix) with ESMTPSA id 30386172094;\n\tWed, 20 Sep 2017 00:02:19 +0200 (CEST)" ], "X-Greylist": "from auto-whitelisted by SQLgrey-1.7.6", "X-Originating-IP": "208.91.2.3", "From": "Ben Pfaff <blp@ovn.org>", "To": "dev@openvswitch.org", "Date": "Tue, 19 Sep 2017 15:01:04 -0700", "Message-Id": "<20170919220125.32535-32-blp@ovn.org>", "X-Mailer": "git-send-email 2.10.2", "In-Reply-To": "<20170919220125.32535-1-blp@ovn.org>", "References": "<20170919220125.32535-1-blp@ovn.org>", "X-Spam-Status": "No, score=-0.7 required=5.0 tests=RCVD_IN_DNSWL_LOW\n\tautolearn=disabled version=3.3.1", "X-Spam-Checker-Version": "SpamAssassin 3.3.1 (2010-03-16) on\n\tsmtp1.linux-foundation.org", "Cc": "Ben Pfaff <blp@ovn.org>", "Subject": "[ovs-dev] [PATCH RFC 31/52] ovsdb-idl: Document state machine.", "X-BeenThere": "ovs-dev@openvswitch.org", "X-Mailman-Version": "2.1.12", "Precedence": "list", "List-Id": "<ovs-dev.openvswitch.org>", "List-Unsubscribe": "<https://mail.openvswitch.org/mailman/options/ovs-dev>,\n\t<mailto:ovs-dev-request@openvswitch.org?subject=unsubscribe>", "List-Archive": "<http://mail.openvswitch.org/pipermail/ovs-dev/>", "List-Post": "<mailto:ovs-dev@openvswitch.org>", "List-Help": "<mailto:ovs-dev-request@openvswitch.org?subject=help>", "List-Subscribe": "<https://mail.openvswitch.org/mailman/listinfo/ovs-dev>,\n\t<mailto:ovs-dev-request@openvswitch.org?subject=subscribe>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Sender": "ovs-dev-bounces@openvswitch.org", "Errors-To": "ovs-dev-bounces@openvswitch.org" }, "content": "Signed-off-by: Ben Pfaff <blp@ovn.org>\n---\n lib/ovsdb-idl.c | 33 +++++++++++++++++++++++++++++++--\n 1 file changed, 31 insertions(+), 2 deletions(-)", "diff": "diff --git a/lib/ovsdb-idl.c b/lib/ovsdb-idl.c\nindex 62a6c3898227..d71188ab3c7c 100644\n--- a/lib/ovsdb-idl.c\n+++ b/lib/ovsdb-idl.c\n@@ -79,12 +79,41 @@ struct ovsdb_idl_arc {\n struct ovsdb_idl_row *dst; /* Destination row. */\n };\n \n+/* Connection state machine.\n+ *\n+ * When a JSON-RPC session connects, the IDL sends a \"get_schema\" request and\n+ * transitions to IDL_S_SCHEMA_REQUESTED. If the session drops and reconnects,\n+ * the IDL starts over again in the same way. */\n enum ovsdb_idl_state {\n+ /* Waits for \"get_schema\" reply, then sends a \"monitor_cond\" request whose\n+ * details are informed by the schema and transitions to\n+ * IDL_S_MONITOR_COND_REQUESTED. */\n IDL_S_SCHEMA_REQUESTED,\n- IDL_S_MONITOR_REQUESTED,\n- IDL_S_MONITORING,\n+\n+ /* Waits for \"monitor_cond\" reply:\n+ *\n+ * - If the reply indicates success, replaces the IDL contents by the\n+ * data carried in the reply and transitions to IDL_S_MONITORING_COND.\n+ *\n+ * - If the reply indicates failure because the database is too old to\n+ * support monitor_cond, sends a \"monitor\" request and transitions to\n+ * IDl_S_MONITOR_REQUESTED. */\n IDL_S_MONITOR_COND_REQUESTED,\n+\n+ /* Waits for \"monitor\" reply, then replaces the IDL contents by the data\n+ * carried in the reply and transitions to IDL_S_MONITORING. */\n+ IDL_S_MONITOR_REQUESTED,\n+\n+ /* Terminal states that process \"update2\" (IDL_S_MONITORING_COND) or\n+ * \"update\" (IDL_S_MONITORING) notifications. */\n IDL_S_MONITORING_COND,\n+ IDL_S_MONITORING,\n+\n+ /* Terminal error state that indicates that nothing useful can be done.\n+ * The most likely reason is that the database server doesn't actually have\n+ * the desired database. We maintain the session with the database server\n+ * anyway. If it starts serving the database that we want, then it will\n+ * kill the session and we will automatically reconnect and try again. */\n IDL_S_NO_SCHEMA\n };\n \n", "prefixes": [ "ovs-dev", "RFC", "31/52" ] }