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["Davanum Srinivas \(DIMS\)" <davanum@xxxxxxxxx>]

** Also affects: oslo.middleware
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1524404

Title:
  grenade jobs on stable/liberty broken with oslo.middleware>=3

Status in OpenStack Compute (nova):
  Invalid
Status in OpenStack Compute (nova) liberty series:
  Invalid
Status in oslo.middleware:
  New

Bug description:
  Seen here:

  http://logs.openstack.org/11/246211/19/check/gate-grenade-
  dsvm/06a815e/logs/new/screen-n-api.txt.gz?level=TRACE

  2015-12-09 07:52:44.729 3354 ERROR nova Traceback (most recent call last):
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/bin/nova-api", line 10, in <module>
  2015-12-09 07:52:44.729 3354 ERROR nova     sys.exit(main())
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/opt/stack/new/nova/nova/cmd/api.py", line 55, in main
  2015-12-09 07:52:44.729 3354 ERROR nova     server = service.WSGIService(api, use_ssl=should_use_ssl)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/opt/stack/new/nova/nova/service.py", line 328, in __init__
  2015-12-09 07:52:44.729 3354 ERROR nova     self.app = self.loader.load_app(name)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/opt/stack/new/nova/nova/wsgi.py", line 543, in load_app
  2015-12-09 07:52:44.729 3354 ERROR nova     return deploy.loadapp("config:%s" % self.config_path, name=name)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 247, in loadapp
  2015-12-09 07:52:44.729 3354 ERROR nova     return loadobj(APP, uri, name=name, **kw)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 272, in loadobj
  2015-12-09 07:52:44.729 3354 ERROR nova     return context.create()
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
  2015-12-09 07:52:44.729 3354 ERROR nova     return self.object_type.invoke(self)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke
  2015-12-09 07:52:44.729 3354 ERROR nova     **context.local_conf)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
  2015-12-09 07:52:44.729 3354 ERROR nova     val = callable(*args, **kw)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/opt/stack/new/nova/nova/api/openstack/urlmap.py", line 160, in urlmap_factory
  2015-12-09 07:52:44.729 3354 ERROR nova     app = loader.get_app(app_name, global_conf=global_conf)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 350, in get_app
  2015-12-09 07:52:44.729 3354 ERROR nova     name=name, global_conf=global_conf).create()
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 710, in create
  2015-12-09 07:52:44.729 3354 ERROR nova     return self.object_type.invoke(self)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 144, in invoke
  2015-12-09 07:52:44.729 3354 ERROR nova     **context.local_conf)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/util.py", line 55, in fix_call
  2015-12-09 07:52:44.729 3354 ERROR nova     val = callable(*args, **kw)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/opt/stack/new/nova/nova/api/auth.py", line 73, in pipeline_factory
  2015-12-09 07:52:44.729 3354 ERROR nova     return _load_pipeline(loader, pipeline)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/opt/stack/new/nova/nova/api/auth.py", line 57, in _load_pipeline
  2015-12-09 07:52:44.729 3354 ERROR nova     filters = [loader.get_filter(n) for n in pipeline[:-1]]
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 354, in get_filter
  2015-12-09 07:52:44.729 3354 ERROR nova     name=name, global_conf=global_conf).create()
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 366, in filter_context
  2015-12-09 07:52:44.729 3354 ERROR nova     FILTER, name=name, global_conf=global_conf)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 458, in get_context
  2015-12-09 07:52:44.729 3354 ERROR nova     section)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 517, in _context_from_explicit
  2015-12-09 07:52:44.729 3354 ERROR nova     value = import_string(found_expr)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 22, in import_string
  2015-12-09 07:52:44.729 3354 ERROR nova     return pkg_resources.EntryPoint.parse("x=" + s).load(False)
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2380, in load
  2015-12-09 07:52:44.729 3354 ERROR nova     return self.resolve()
  2015-12-09 07:52:44.729 3354 ERROR nova   File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2386, in resolve
  2015-12-09 07:52:44.729 3354 ERROR nova     module = __import__(self.module_name, fromlist=['__name__'], level=0)
  2015-12-09 07:52:44.729 3354 ERROR nova ImportError: No module named middleware
  2015-12-09 07:52:44.729 3354 ERROR nova 

  Proposal to cap oslo.middleware at <3 here:
  https://review.openstack.org/#/c/255245/

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