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[OpenStack Infra <1817953@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/639822
Committed: https://git.openstack.org/cgit/openstack/oslo.policy/commit/?id=61732757c0e934a7c61cef2b2d2651f5abbb6fc6
Submitter: Zuul
Branch:    master

commit 61732757c0e934a7c61cef2b2d2651f5abbb6fc6
Author: Ben Nemec <bnemec@xxxxxxxxxx>
Date:   Wed Feb 27 20:53:11 2019 +0000

    Provide more specific error when namespace is missing
    
    Previously if a non-existent namespace was specified, we just got
    a generic KeyError from stevedore that didn't say a whole lot about
    what went wrong. You pretty much had to go read the code to figure
    out what happened.
    
    This change adds an explicit check for a missing namespace and raises
    a KeyError with a more specific error message that explains what is
    wrong.
    
    Change-Id: Ia56d4655d70cee78661567188a977f67b7c3ee78
    Closes-Bug: 1817953


** Changed in: oslo.policy
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1817953

Title:
  oslopolicy-policy-generator does not work for neutron

Status in neutron:
  New
Status in oslo.policy:
  Fix Released

Bug description:
  The oslopolicy-policy-generator tool does not work for neutron.  This
  appears to be the same as an old bug [1] that was already fixed for
  other services.

  [centos@persist devstack]$ oslopolicy-policy-generator --namespace neutron
  WARNING:stevedore.named:Could not load neutron
  Traceback (most recent call last):
    File "/usr/bin/oslopolicy-policy-generator", line 11, in <module>
      sys.exit(generate_policy())
    File "/usr/lib/python2.7/site-packages/oslo_policy/generator.py", line 338, in generate_policy
      _generate_policy(conf.namespace, conf.output_file)
    File "/usr/lib/python2.7/site-packages/oslo_policy/generator.py", line 283, in _generate_policy
      enforcer = _get_enforcer(namespace)
    File "/usr/lib/python2.7/site-packages/oslo_policy/generator.py", line 87, in _get_enforcer
      enforcer = mgr[namespace].obj
    File "/usr/lib/python2.7/site-packages/stevedore/extension.py", line 326, in __getitem__
      return self._extensions_by_name[name]
  KeyError: 'neutron'

  [1] https://bugs.launchpad.net/keystone/+bug/1740951

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