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

** Changed in: glance/grizzly
   Importance: Undecided => Medium

** Changed in: glance/grizzly
       Status: New => Fix Released

** Changed in: glance/grizzly
    Milestone: None => 2013.1

** Changed in: glance/grizzly
     Assignee: (unassigned) => Flavio Percoco Premoli (flaper87)

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https://bugs.launchpad.net/bugs/1157765

Title:
  glance-cache-prefetcher explodes when no auth parameters were
  configured

Status in OpenStack Image Registry and Delivery Service (Glance):
  Fix Released
Status in Glance grizzly series:
  Fix Released

Bug description:
  Description of problem:

  If there're no auth parameters configured in glance-cache.conf,
  glance-cache-prefetcher fails and prints a traceback.

  
  How reproducible:

  very

  Steps to Reproduce:
  1. install glance
  2. configure cachemanager
  3. use keystone as auth backend
  4. queue an image for cache
  5. remove keystone parameters from glance-cache.conf
  6. call glance-cache-prefetcher
    
  Actual results:
  [root@interceptor glance(keystone_admin)]# glance-cache-prefetcher --debug
  Traceback (most recent call last):
    File "/usr/lib/python2.6/site-packages/eventlet/hubs/hub.py", line 336, in fire_timers
      timer()
    File "/usr/lib/python2.6/site-packages/eventlet/hubs/timer.py", line 56, in __call__
      cb(*args, **kw)
    File "/usr/lib/python2.6/site-packages/eventlet/greenthread.py", line 192, in main
      result = function(*args, **kwargs)
    File "/usr/lib/python2.6/site-packages/glance/image_cache/prefetcher.py", line 53, in fetch_image_into_cache
      image_meta = registry.get_image_metadata(ctx, image_id)
    File "/usr/lib/python2.6/site-packages/glance/registry/__init__.py", line 133, in get_image_metadata
      return c.get_image(image_id)
    File "/usr/lib/python2.6/site-packages/glance/registry/client.py", line 121, in get_image
      res = self.do_request("GET", "/images/%s" % image_id)
    File "/usr/lib/python2.6/site-packages/glance/registry/client.py", line 89, in do_request
      action, **kwargs)
    File "/usr/lib/python2.6/site-packages/glance/common/client.py", line 63, in wrapped
      return func(self, *args, **kwargs)
    File "/usr/lib/python2.6/site-packages/glance/common/client.py", line 440, in do_request
      self._authenticate()
    File "/usr/lib/python2.6/site-packages/glance/common/client.py", line 418, in _authenticate
      auth_plugin.authenticate()
    File "/usr/lib/python2.6/site-packages/glance/common/auth.py", line 125, in authenticate
      self.check_auth_params()
    File "/usr/lib/python2.6/site-packages/glance/common/auth.py", line 94, in check_auth_params

      if self.creds['auth_url'].rstrip('/').endswith('v2.0'):
  AttributeError: 'NoneType' object has no attribute 'rstrip'
  Traceback (most recent call last):
    File "/usr/bin/glance-cache-prefetcher", line 53, in <module>
      app.run()
    File "/usr/lib/python2.6/site-packages/glance/image_cache/prefetcher.py", line 80, in run
      successes = sum([1 for r in results if r is True])
    File "/usr/lib/python2.6/site-packages/eventlet/greenpool.py", line 232, in next
      val = self.waiters.get().wait()
    File "/usr/lib/python2.6/site-packages/eventlet/greenthread.py", line 166, in wait
      return self._exit_event.wait()
    File "/usr/lib/python2.6/site-packages/eventlet/event.py", line 120, in wait
      current.throw(*self._exc)
    File "/usr/lib/python2.6/site-packages/eventlet/greenthread.py", line 192, in main
      result = function(*args, **kwargs)
    File "/usr/lib/python2.6/site-packages/glance/image_cache/prefetcher.py", line 53, in fetch_image_into_cache
      image_meta = registry.get_image_metadata(ctx, image_id)
    File "/usr/lib/python2.6/site-packages/glance/registry/__init__.py", line 133, in get_image_metadata
      return c.get_image(image_id)
    File "/usr/lib/python2.6/site-packages/glance/registry/client.py", line 121, in get_image
      res = self.do_request("GET", "/images/%s" % image_id)
    File "/usr/lib/python2.6/site-packages/glance/registry/client.py", line 89, in do_request
      action, **kwargs)
    File "/usr/lib/python2.6/site-packages/glance/common/client.py", line 63, in wrapped
      return func(self, *args, **kwargs)
    File "/usr/lib/python2.6/site-packages/glance/common/client.py", line 440, in do_request
      self._authenticate()
    File "/usr/lib/python2.6/site-packages/glance/common/client.py", line 418, in _authenticate
      auth_plugin.authenticate()
    File "/usr/lib/python2.6/site-packages/glance/common/auth.py", line 125, in authenticate
      self.check_auth_params()
    File "/usr/lib/python2.6/site-packages/glance/common/auth.py", line 94, in check_auth_params
      if self.creds['auth_url'].rstrip('/').endswith('v2.0'):
  AttributeError: 'NoneType' object has no attribute 'rstrip'

  Expected results:

  A nice error message requesting auth parameters

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