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[Chris Buccella <chris@xxxxxxxxxxxx>]

** Also affects: cinder
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1275173

Title:
  _translate_from_glance() can cause an unnecessary HTTP request

Status in Cinder:
  New
Status in OpenStack Compute (Nova):
  In Progress

Bug description:
  I noticed when performing a "nova image-show" on a current (not
  deleted) image, two HTTP requests were issued. Why isn't the Image
  retrieved on the first GET request?

  In fact, it is. The problem lies in _extract_attributes(), called by
  _translate_from_glance(). This function loops through a list of
  expected attributes, and extracts them from the passed-in Image. The
  problem is that if the attribute 'deleted' is False, there won't be a
  'deleted_at' attribute in the Image. Not finding the attribute results
  in getattr() making another GET request (to try to find the "missing"
  attribute?). This is unnecessary of course, since it makes sense for
  the Image to not have that attribute set.

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