Catch ConnectionForced Exception

Occasionally I saw large number of connectionforced exceptions.
such exceptions cannot be healed automatically and requires a reboot.
catch it and ensure connection established.

Changes:
  oslo_messaging/_drivers/impl_rabbit.py

NOTE(stephenfin): We need to add the 'absolute_import' future to disable
the legacy import flow. Without this, the import of 'amqp.exceptions' in
'oslo_messaging._drivers.impl_rabbit' attempts to import 'exceptions'
from the sibling module, 'oslo_messaging._drivers.amqp', instead of the
top-level 'amqp' module. Thank God for Python 3.x, eh? More information
is available at [1], for those curious enough.

NOTE(hberaud): conflicts within the cherry-pick on stable/stein due to
removed log translation and i18n on stable/train [2]. I decided to ignore this
patch [2] for stable/stein first to prepare cherry-picking on previous stable
branches (rocky, queens) and secondly because I don't think we want it
on older branches.

[1] https://stackoverflow.com/q/33743880/
[2]
https://opendev.org/openstack/oslo.messaging/commit/4f385720d7d43aadfaff7c6f41b0534312b23ba8

Change-Id: I5c468d10230f05438df780e045f1e92662edf070
Closes-Bug: #1883038
(cherry picked from commit 26e8bb4cc9097fddf3c2e34599b131e3f5d73867)
(cherry picked from commit 360deb89a7e95d332267564b486219e389a793f7)
(cherry picked from commit 54ced5361b49fb9b0cf53ff2e6f5825ba7ae513a)

1 files changed, 5 insertions, 1 deletions

diff --git a/oslo_messaging/_drivers/impl_rabbit.py b/oslo_messaging/_drivers/impl_rabbit.py
index 54e4dc0..122b166 100644
--- a/oslo_messaging/_drivers/impl_rabbit.py
+++ b/oslo_messaging/_drivers/impl_rabbit.py
@@ -12,6 +12,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from __future__ import absolute_import
+
 import contextlib
 import errno
 import functools
@@ -26,6 +28,7 @@ import threading
 import time
 import uuid
 
+from amqp import exceptions as amqp_exec
 import kombu
 import kombu.connection
 import kombu.entity
@@ -953,7 +956,8 @@ class Connection(object):
                     except (socket.timeout,
                             ConnectRefuseError,
                             OSError,
-                            kombu.exceptions.OperationalError) as exc:
+                            kombu.exceptions.OperationalError,
+                            amqp_exec.ConnectionForced) as exc:
                         LOG.info(_LI("A recoverable connection/channel error "
                                      "occurred, trying to reconnect: %s"), exc)
                         self.ensure_connection()