openstack/oslo.messaging
Code Issues Proposed changes

Fix duplicate topic messages for Qpid topology=2

Browse Source 
Manually applied ef406a21782134aeefb944f74b3f1a47d6169318 from
oslo-incubator to get the fix required for bug 1257293.

Copying the original commit message from oslo-incubator below.

"""
When multiple RPC servers (consumers) are subscribed to the same RPC
topic, a single RPC request to that topic should be received by only
one of the consumers.  A bug in the QPID driver caused every consumer
to receive a copy of the RPC request.  This bug affects only Topology
version 2.  This patch will cause a single queue to be created for
each topic, and shared among all consumers of that topic.  This
results in each RPC request being received by only one consumer,
in turn across all the competing consumers.
"""

Change-Id: I76bfa5b48bad4a70fbf06b74f4cc8234af6610c2
Closes-bug: #1257293.
This commit is contained in:
Ihar Hrachyshka 2014-01-03 11:15:44 +01:00
parent 062c8ac7dd
commit 9ff4d99823
1 changed files with 6 additions and 3 deletions
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9
oslo/messaging/_drivers/impl_qpid.py
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@ -131,14 +131,13 @@ class ConsumerBase(object):
},
},
}
if link_name:
addr_opts["link"]["name"] = link_name
addr_opts["node"]["x-declare"].update(node_opts)
elif conf.qpid_topology_version == 2:
addr_opts = {
"link": {
"x-declare": {
"auto-delete": True,
"exclusive": False,
},
},
}
@ -146,6 +145,8 @@ class ConsumerBase(object):
raise_invalid_topology_version(conf)
addr_opts["link"]["x-declare"].update(link_opts)
if link_name:
addr_opts["link"]["name"] = link_name
self.address = "%s ; %s" % (node_name, jsonutils.dumps(addr_opts))
@ -219,14 +220,16 @@ class DirectConsumer(ConsumerBase):
if conf.qpid_topology_version == 1:
node_name = "%s/%s" % (msg_id, msg_id)
node_opts = {"type": "direct"}
link_name = msg_id
elif conf.qpid_topology_version == 2:
node_name = "amq.direct/%s" % msg_id
node_opts = {}
link_name = None
else:
raise_invalid_topology_version(conf)
super(DirectConsumer, self).__init__(conf, session, callback,
node_name, node_opts, msg_id,
node_name, node_opts, link_name,
link_opts)