svc_monitor get InvalidSessionID from ifmap when ifmap restarted

[Sylvain Afchain]

Just after a restart of the ifmap process the svc_monitor gets InvalidSessionID errors from the recreated ifmap connection and flood the ifmap server.

below the traceback

the original traceback:

Traceback (most recent call last):
  File "/usr/local/bin/contrail-svc-monitor", line 9, in <module>
    load_entry_point('svc-monitor==0.1dev', 'console_scripts', 'contrail-svc-monitor')()
  File "/opt/stack/contrail/build/noarch/config/svc-monitor/svc_monitor/svc_monitor.py", line 899, in server_main
    main()
  File "/opt/stack/contrail/build/noarch/config/svc-monitor/svc_monitor/svc_monitor.py", line 894, in main
    run_svc_monitor, args)
  File "/usr/local/lib/python2.7/dist-packages/cfgm_common/zkclient.py", line 279, in master_election
    self._election.run(self._zk_election_callback, func, *args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/kazoo/recipe/election.py", line 53, in run
    func(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/cfgm_common/zkclient.py", line 271, in _zk_election_callback
    func(*args, **kwargs)
  File "/opt/stack/contrail/build/noarch/config/svc-monitor/svc_monitor/svc_monitor.py", line 876, in run_svc_monitor
    gevent.joinall([ssrc_task, timer_task, cleanup_task])
  File "/usr/local/lib/python2.7/dist-packages/gevent/greenlet.py", line 400, in joinall
    wait(greenlets, timeout=timeout)
  File "/usr/local/lib/python2.7/dist-packages/gevent/hub.py", line 645, in wait
    return list(iwait(objects, timeout))
  File "/usr/local/lib/python2.7/dist-packages/gevent/hub.py", line 598, in iwait
    item = waiter.get()
  File "/usr/local/lib/python2.7/dist-packages/gevent/hub.py", line 568, in get
    return self.hub.switch()
  File "/usr/local/lib/python2.7/dist-packages/gevent/hub.py", line 331, in switch
    return greenlet.switch(self)
KeyboardInterrupt

safchain@opencontrail:/opt/stack/contrail/build/noarch/config/svc-monitor$ tail -f /var/log/contrail/svc-monitor.err
  File "/opt/stack/contrail/build/noarch/config/svc-monitor/svc_monitor/svc_monitor.py", line 610, in launch_arc
    monitor.process_poll_result(result)
  File "/opt/stack/contrail/build/noarch/config/svc-monitor/svc_monitor/svc_monitor.py", line 546, in process_poll_result
    result_list = parse_poll_result(poll_result_str)
  File "/usr/local/lib/python2.7/dist-packages/cfgm_common/imid.py", line 205, in parse_poll_result
    raise exceptions.InvalidSessionID(etree.tostring(error_results[0]))
InvalidSessionID: <errorResult xmlns:ns2="http://www.trustedcomputinggroup.org/2010/IFMAP/2" xmlns:ns3="http://www.w3.org/2003/05/soap-envelope" errorCode="InvalidSessionID"><errorString>Session not found.</errorString></errorResult>

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/3290
Committed: http://github.org/Juniper/contrail-controller/commit/3aa871fa29bdc251c207235867662ba1d02e966f
Submitter: Zuul
Branch: master

commit 3aa871fa29bdc251c207235867662ba1d02e966f
Author: Sylvain Afchain <email address hidden>
Date: Tue Sep 30 12:30:22 2014 +0200

Fixes InvalidSessionID when restarting ifmap

This patch fixes an issue when the ifmap server
is restarted. In that case the svc_monitor gets
InvalidSessionID error from the newly ifmap connection
and starts to flood the ifmap server.

Closes-bug #1375696

Change-Id: Ibec3f7e1fe253c3a0e81ed812f028b302b986f3c