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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: keystone
       Status: Fix Committed => Fix Released

** Changed in: keystone
    Milestone: None => icehouse-3

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https://bugs.launchpad.net/bugs/1274402

Title:
  Local variable 'domain_ref' referenced before assignment

Status in OpenStack Identity (Keystone):
  Fix Released

Bug description:
  On keystone havana version (0.4.1). If you configure keystone.conf
  like this:

  ...
  domain_specific_drivers_enabled = True
  domain_config_dir = /etc/keystone/domains
  ...

  After restart openstack-keystone service, if you execute this command
  for the first:

  $keystone user-list

  System raises this error

  2014-01-29 15:57:46.606 9939 WARNING keystone.identity.core [-] Running an experimental and unsupported configuration (domain_specific_drivers_enabled = True); this will result in known issues.
  2014-01-29 15:57:46.659 9939 WARNING keystone.identity.core [-] Invalid domain name (dominioldap) found in config file name
  2014-01-29 15:57:46.659 9939 ERROR keystone.common.wsgi [-] local variable 'domain_ref' referenced before assignment
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi Traceback (most recent call last):
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi   File "/usr/lib/python2.6/site-packages/keystone/common/wsgi.py", line 238, in __call__
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi     result = method(context, **params)
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi   File "/usr/lib/python2.6/site-packages/keystone/token/controllers.py", line 94, in authenticate
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi     context, auth)
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi   File "/usr/lib/python2.6/site-packages/keystone/token/controllers.py", line 257, in _authenticate_local
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi     username, DEFAULT_DOMAIN_ID)
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi   File "/usr/lib/python2.6/site-packages/keystone/identity/core.py", line 176, in wrapper
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi     self.driver, self.assignment_api)
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi   File "/usr/lib/python2.6/site-packages/keystone/identity/core.py", line 128, in setup_domain_drivers
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi     names[1])
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi   File "/usr/lib/python2.6/site-packages/keystone/identity/core.py", line 96, in _load_config
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi     if domain_ref:
  2014-01-29 15:57:46.659 9939 TRACE keystone.common.wsgi UnboundLocalError: local variable 'domain_ref' referenced before assignment

  This problem is derived from the previous WARNING about the invalid
  domain name. However, there is a codification problem on
  /usr/lib/python2.6/site-packages/keystone/identity/core.py line 104,
  because if the DomainNotFound is raised (whatever reason) the
  "domain_ref" variable will never been initialized. Therefore on line
  110 an uncontrolled error " local variable 'domain_ref' referenced
  before assignment" will be raised.

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