simulator fails on stopiing server

[Julia Portnova]

Simulator.py fails to exit correctly on SIGINT

2016-04-29 08:40:58,375 INFO root Signal 2 is caught. Interrupting the execution
Traceback (most recent call last):
  File "simulator.py", line 696, in <module>
    main()
  File "simulator.py", line 656, in main
    args.executor, args.duration)
  File "simulator.py", line 410, in rpc_server
    run_server(server, duration=duration)
  File "simulator.py", line 399, in run_server
    server.wait()
  File "/var/venv/local/lib/python2.7/site-packages/oslo_messaging/server.py", line 264, in wrapper
    log_after, timeout_timer)
  File "/var/venv/local/lib/python2.7/site-packages/oslo_messaging/server.py", line 163, in wait_for_completion
    msg, log_after, timeout_timer)
  File "/var/venv/local/lib/python2.7/site-packages/oslo_messaging/server.py", line 145, in _wait
    self._cond.wait(wait)
  File "/usr/lib/python2.7/threading.py", line 339, in wait
    waiter.acquire()
  File "/var/venv/local/lib/python2.7/site-packages/eventlet/semaphore.py", line 113, in acquire
    hubs.get_hub().switch()
  File "/var/venv/local/lib/python2.7/site-packages/eventlet/hubs/hub.py", line 294, in switch
    return self.greenlet.switch()
  File "/var/venv/local/lib/python2.7/site-packages/eventlet/hubs/hub.py", line 346, in run
    self.wait(sleep_time)
  File "/var/venv/local/lib/python2.7/site-packages/eventlet/hubs/poll.py", line 85, in wait
    presult = self.do_poll(seconds)
  File "/var/venv/local/lib/python2.7/site-packages/eventlet/hubs/epolls.py", line 62, in do_poll
    return self.poll.poll(seconds)
  File "simulator.py", line 540, in signal_handler
    server.stop()
  File "/var/venv/local/lib/python2.7/site-packages/oslo_messaging/server.py", line 268, in wrapper
    log_after, timeout_timer)
  File "/var/venv/local/lib/python2.7/site-packages/oslo_messaging/server.py", line 188, in run_once
    post_fn = fn()
  File "/var/venv/local/lib/python2.7/site-packages/oslo_messaging/server.py", line 267, in <lambda>
    states[state].run_once(lambda: fn(self, *args, **kwargs),
  File "/var/venv/local/lib/python2.7/site-packages/oslo_messaging/server.py", line 426, in stop
    self.listener.stop()
  File "/var/venv/local/lib/python2.7/site-packages/oslo_messaging/_drivers/base.py", line 221, in stop
    self._listen_thread.join()
  File "/usr/lib/python2.7/threading.py", line 949, in join
    self.__block.wait()
  File "/usr/lib/python2.7/threading.py", line 339, in wait
    waiter.acquire()
  File "/var/venv/local/lib/python2.7/site-packages/eventlet/semaphore.py", line 113, in acquire
    hubs.get_hub().switch()
  File "/var/venv/local/lib/python2.7/site-packages/eventlet/hubs/hub.py", line 280, in switch
    assert cur is not self.greenlet, 'Cannot switch to MAINLOOP from MAINLOOP'
AssertionError: Cannot switch to MAINLOOP from MAINLOOP

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/311090

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/311090
Committed: https://git.openstack.org/cgit/openstack/oslo.messaging/commit/?id=a98fa8f52fe309d49884b8a75eb348b023adf55c
Submitter: Jenkins
Branch: master

commit a98fa8f52fe309d49884b8a75eb348b023adf55c
Author: Dmitriy Ukhlov <email address hidden>
Date: Fri Apr 29 07:18:39 2016 -0500

    Fixes sumulator.py signal_handler logic

    Change-Id: I95ee737a6c12572e7b3d27d8ea117c9f2909ef28
    Closes-bug: #1576614

[Doug Hellmann (doug-hellmann)]

This issue was fixed in the openstack/oslo.messaging 5.0.0 release.