From 428290399a250f217b004a4cd00b7528fb99235f Mon Sep 17 00:00:00 2001
From: Salvatore Orlando <salv.orlando@gmail.com>
Date: Thu, 14 Mar 2013 01:05:45 +0100
Subject: [PATCH] Ensure DB pooling code works with newer eventlet versions

Bug 1097992

Change-Id: Id14697a0a4815d0aacbae769bf538a96d6846567
---
 quantum/db/api.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/quantum/db/api.py b/quantum/db/api.py
index d27a0c21c1f..9fe66cfeaf5 100644
--- a/quantum/db/api.py
+++ b/quantum/db/api.py
@@ -137,8 +137,16 @@ def configure_db():
                     'max_size': cfg.CONF.DATABASE.sql_max_pool_size,
                     'max_idle': cfg.CONF.DATABASE.sql_idle_timeout
                 }
-                creator = db_pool.ConnectionPool(MySQLdb, **pool_args)
-                engine_args['creator'] = creator.create
+                pool = db_pool.ConnectionPool(MySQLdb, **pool_args)
+
+                def creator():
+                    conn = pool.create()
+                    # NOTE(belliott) eventlet >= 0.10 returns a tuple
+                    if isinstance(conn, tuple):
+                        _1, _2, conn = conn
+                    return conn
+
+                engine_args['creator'] = creator
             if (MySQLdb is None and cfg.CONF.DATABASE.sql_dbpool_enable):
                 LOG.warn(_("Eventlet connection pooling will not work without "
                            "python-mysqldb!"))