oslo.messaging log useless error on application exit

[Mehdi Abaakouk]

Hi,

When an application exits, the rabbit consumers main loop is stopped and raise an useless error without detail:

2015-04-30 07:07:24.037 21241 INFO ceilometer.openstack.common.service [-] Caught SIGINT, exiting
2015-04-30 07:07:24.998 21241 ERROR oslo_messaging._drivers.impl_rabbit [-] Failed to consume message from queue:

Cheers,

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/178961

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/178961
Committed: https://git.openstack.org/cgit/openstack/oslo.messaging/commit/?id=6c91066c72f3449fc01ab3189c9ddde3b32b570e
Submitter: Jenkins
Branch: master

commit 6c91066c72f3449fc01ab3189c9ddde3b32b570e
Author: Mehdi Abaakouk <email address hidden>
Date: Thu Apr 30 08:56:20 2015 +0200

    rabbit/qpid: simplify the consumer loop

    The consumer loop is over engineered, it returns unused return,
    iterconsume creates an iterator directly consumed by 'consume' without
    special handling, and in some case kombu error callback are called when
    the iterator is stopped and log useless error.

    And in reality the consumer is always called when limit=1.

    This change simplifies that, by removing the loop and removes all
    returns stuffs.

    Closes bug: #1450336

    Change-Id: Ia2cb52c8577b29e74d4d2b0ed0b535102f2d55c7