From d8fa6d5edfa171ae5f36b8d1269f87716830ba7b Mon Sep 17 00:00:00 2001
From: Andras Kovi <akovi@nokia.com>
Date: Thu, 2 Aug 2018 13:24:11 +0200
Subject: [PATCH] Call listener stop only if listener is initialized

Change-Id: I1303d74af7a242edefe774d8f5e12e63614c0158
Closes-Bug: #1785048
---
 oslo_messaging/server.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/oslo_messaging/server.py b/oslo_messaging/server.py
index b889322a4..ed56d021d 100644
--- a/oslo_messaging/server.py
+++ b/oslo_messaging/server.py
@@ -426,7 +426,8 @@ class MessageHandlingServer(service.ServiceBase, _OrderedTaskRunner):
         some messages, and underlying driver resources associated to this
         server are still in use. See 'wait' for more details.
         """
-        self.listener.stop()
+        if self.listener:
+            self.listener.stop()
         self._started = False
 
     @ordered(after='stop')
@@ -443,7 +444,8 @@ class MessageHandlingServer(service.ServiceBase, _OrderedTaskRunner):
         self._work_executor.shutdown(wait=True)
 
         # Close listener connection after processing all messages
-        self.listener.cleanup()
+        if self.listener:
+            self.listener.cleanup()
 
     def reset(self):
         """Reset service.