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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">For information, I solved my problem by uninstalling the package “librabbitmq” which is not installed in the stable icehouse release of Openstack RDO.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">This library causes my problem.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Romain Ziba.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">De :</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ZIBA Romain
<br>
<b>Envoyé :</b> jeudi 19 mars 2015 18:11<br>
<b>À :</b> 'openstack-dev@lists.openstack.org'<br>
<b>Objet :</b> RE: Stable/icehouse: oslo.messaging RPCClient segmentation fault core dumped<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Hello everyone,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">I have dug into this problem and I realized that this piece of code is working on a CentOS 6.6 running Openstack stable icehouse installed with RDO.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">My guess is that there may be an issue either with the operating system or with the devstack installation.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">If you have any clue, please let me know.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Thanks & best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Romain Ziba.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">De :</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ZIBA Romain
<br>
<b>Envoyé :</b> mercredi 18 mars 2015 13:07<br>
<b>À :</b> <a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a><br>
<b>Objet :</b> Stable/icehouse: oslo.messaging RPCClient segmentation fault core dumped<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hello everyone,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am having an issue using the RPCClient of the oslo.messaging package delivered through the stable/icehouse release of devstack (v 1.4.1).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">With this simple script:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">########################################################<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">import sys<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">from oslo.config import cfg<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">from oslo import messaging<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">from project.openstack.common import log<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">LOG = log.getLogger(__name__)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">log_levels = (cfg.CONF.default_log_levels +<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> ['stevedore=INFO', 'keystoneclient=INFO'])<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">cfg.set_defaults(log.log_opts, default_log_levels=log_levels)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">argv = sys.argv<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">cfg.CONF(argv[1:], project='test_rpc_server')<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">log.setup('test_rpc_server')<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">transport_url = 'rabbit://guest:guest@localhost:5672/'<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">transport = messaging.get_transport(cfg.CONF, transport_url)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">target = messaging.Target(topic='test_rpc', server='server1')<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">client = messaging.RPCClient(transport, target)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">ctxt = {'some':'context'}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">try:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> res = client.call(ctxt, 'call_method_1’)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">except Exception as e:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> LOG.debug(e)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">print res<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">########################################################<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">svcdev@svcdev-openstack: python rpc_client.py
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2015-03-18 11:44:01.018 15967 INFO oslo.messaging._drivers.impl_rabbit [-] Connecting to AMQP server on localhost:5672<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2015-03-18 11:44:01.125 15967 INFO oslo.messaging._drivers.impl_rabbit [-] Connected to AMQP server on localhost:5672<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2015-03-18 11:44:01.134 15967 INFO oslo.messaging._drivers.impl_rabbit [-] Connecting to AMQP server on localhost:5672<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">2015-03-18 11:44:01.169 15967 INFO oslo.messaging._drivers.impl_rabbit [-] Connected to AMQP server on localhost:5672<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Segmentation fault (core dumped)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The last Python method called is the following one (in librabbitmq package, v 1.0.3):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> def basic_publish(self, body, exchange='', routing_key='',<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> mandatory=False, immediate=False, **properties):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> if isinstance(body, tuple):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> body, properties = body<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> elif isinstance(body, self.Message):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> body, properties = body.body, body.properties<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> return self.connection._basic_publish(self.channel_id,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> body, exchange, routing_key, properties,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> mandatory or False, immediate or False)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The script crashes after trying to call _<i>basic</i>_publish.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">For information, I’ve got the trusty’s rabbitmq-server version (v 3.2.4-1).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Plus, replacing the call method by a cast method makes that a message is queued.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Could you please tell me if I’m doing something wrong? Is there a bug in the c-library used by librabbitmq?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks beforehand,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Romain Ziba.<o:p></o:p></span></p>
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