Merge "cleanup connection pool return"

oslo_messaging/_drivers/amqp.py

@@ -134,8 +134,16 @@ class ConnectionContext(rpc_common.Connection):
             if self.pooled:
                 # Reset the connection so it's ready for the next caller
                 # to grab from the pool
-                self.connection.reset()
-                self.connection_pool.put(self.connection)
+                try:
+                    self.connection.reset()
+                except Exception:
+                    LOG.exception("Fail to reset the connection, drop it")
+                    try:
+                        self.connection.close()
+                    except Exception:
+                        pass
+                else:
+                    self.connection_pool.put(self.connection)
             else:
                 try:
                     self.connection.close()

oslo_messaging/_drivers/impl_rabbit.py

@@ -884,8 +884,15 @@ class Connection(object):
 
     def reset(self):
         """Reset a connection so it can be used again."""
+        recoverable_errors = (self.connection.recoverable_channel_errors +
+                              self.connection.recoverable_connection_errors)
+
         with self._connection_lock:
-            self._set_current_channel(self.connection.channel())
+            try:
+                self._set_current_channel(self.connection.channel())
+            except recoverable_errors:
+                self._set_current_channel(None)
+                self.ensure_connection()
         self.consumers = []
         self.consumer_num = itertools.count(1)
 

oslo_messaging/tests/drivers/test_impl_rabbit.py

@@ -183,6 +183,19 @@ class TestRabbitIterconsume(test_utils.BaseTestCase):
 
         self.assertEqual(0, int(deadline - time.time()))
 
+    def test_connection_reset_always_succeed(self):
+        transport = oslo_messaging.get_transport(self.conf,
+                                                 'kombu+memory:////')
+        self.addCleanup(transport.cleanup)
+        channel = mock.Mock()
+        conn = transport._driver._get_connection(amqp.PURPOSE_LISTEN
+                                                 ).connection
+        conn.connection.recoverable_channel_errors = (IOError,)
+        with mock.patch.object(conn.connection, 'channel',
+                               side_effect=[IOError, IOError, channel]):
+            conn.reset()
+            self.assertEqual(channel, conn.channel)
+
 
 class TestRabbitTransportURL(test_utils.BaseTestCase):