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[Doug Hellmann <doug@xxxxxxxxxxxxxxxx>]

** Changed in: oslo.messaging
       Status: Fix Committed => Fix Released

** Changed in: oslo.messaging
    Milestone: None => 1.6.0

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https://bugs.launchpad.net/bugs/1246308

Title:
  AttributeError in Redis Matchmaker ack_alive()

Status in OpenStack Compute (Nova):
  Won't Fix
Status in Messaging API for OpenStack:
  Fix Released

Bug description:
  The attribute name while re-registering a topic should be "self.host_topic" instead of "self.topic_host"
  in https://github.com/openstack/nova/blob/master/nova/openstack/common/rpc/matchmaker_redis.py#L113

  Otherwise, the following error is seen while starting the conductor service:
  2013-10-30 18:02:32.849 ERROR nova.openstack.common.threadgroup [-] 'MatchMakerRedis' object has no attribute 'topic_host'
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup Traceback (most recent call last):
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/threadgroup.py", line 117, in wait
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     x.wait()
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/threadgroup.py", line 49, in wait
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     return self.thread.wait()
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 168, in 
  wait
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     return self._exit_event.wait()
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 116, in wait
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     return hubs.get_hub().switch()
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 187, in swi
  tch
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     return self.greenlet.switch()
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 194, in 
  main
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     result = function(*args, **kwargs)
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/service.py", line 448, in run_service
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     service.start()
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/service.py", line 176, in start
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     self.conn.create_consumer(self.topic, rpc_dispatcher, fanout=False)
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/rpc/impl_zmq.py", line 578, in create_consumer
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     _get_matchmaker().register(topic, CONF.rpc_zmq_host)
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/rpc/matchmaker.py", line 207, in register
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     self.ack_alive(key, host)
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/rpc/matchmaker_redis.py", line 113, in ack_alive
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup     self.register(self.topic_host[host], host)
  2013-10-30 18:02:32.849 TRACE nova.openstack.common.threadgroup AttributeError: 'MatchMakerRedis' object has no attribute 'topic_host'

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