Comment 17 for bug 1215091

Reviewed: https://review.openstack.org/44700
Committed: http://github.com/openstack/oslo-incubator/commit/478ac3a3ec4b2dd9adb32891123b6e33c483bdf2
Submitter: Jenkins
Branch: stable/folsom

commit 478ac3a3ec4b2dd9adb32891123b6e33c483bdf2
Author: Ben Nemec <email address hidden>
Date: Thu May 9 19:06:45 2013 +0000

    Fix problem with long messages in Qpid

    Qpid has a limitation where it cannot serialize a dict containing a
    string greater than 65535 characters. This change alters the Qpid
    implementation to JSON encode the dict before sending it, but only if
    Qpid would fail to serialize it. This maintains as much backward
    compatibility as possible, though long messages will still fail if they
    are sent to an older receiver.

    Even though this change will modify the message format, it will only do
    it when messages are longer than 65K which would be broken anyway and
    could cause serious bugs like the one linked below.

    Fixes bug 1215091

    (cherry picked from commit 7ce54410485b33cffc39c7ffb96eae422b88601c)

    Conflicts:
     openstack/common/rpc/impl_qpid.py

    Change-Id: I2f0e88435748bab631d969573d3a598d9e1f7fef