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

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

** Changed in: glance
    Milestone: None => icehouse-rc1

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https://bugs.launchpad.net/bugs/1296589

Title:
  Image API v2 image tags broken with E500

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

Bug description:
  There is set([]) passed to json.dumps() which is not parseable:
   self.func(req, *args, **kwargs)
     File "/usr/lib/python2.7/dist-packages/glance/common/wsgi.py", line 625, in __call__
       request, **action_args)
     File "/usr/lib/python2.7/dist-packages/glance/common/wsgi.py", line 644, in dispatch
       return method(*args, **kwargs)
     File "/usr/lib/python2.7/dist-packages/glance/common/utils.py", line 422, in wrapped
       return func(self, req, *args, **kwargs)
     File "/usr/lib/python2.7/dist-packages/glance/api/v2/image_tags.py",
   line 46, in update
       image_repo.save(image)
     File "/usr/lib/python2.7/dist-packages/glance/domain/proxy.py", line 65, in save
       result = self.base.save(base_item)
     File "/usr/lib/python2.7/dist-packages/glance/domain/proxy.py", line 65, in save
       result = self.base.save(base_item)
     File "/usr/lib/python2.7/dist-packages/glance/notifier/__init__.py", line 140, in save
       super(ImageRepoProxy, self).save(image)
     File
   "/usr/lib/python2.7/dist-packages/glance/domain/proxy.py", line 65, in save
       result = self.base.save(base_item)
     File "/usr/lib/python2.7/dist-packages/glance/api/policy.py", line 186, in save
       return super(ImageRepoProxy, self).save(image)
     File "/usr/lib/python2.7/dist-packages/glance/domain/proxy.py", line 65, in save
       result = self.base.save(base_item)
     File "/usr/lib/python2.7/dist-packages/glance/domain/proxy.py", line 65, in save

   result = self.base.save(base_item)
     File "/usr/lib/python2.7/dist-packages/glance/store/__init__.py", line 398, in save
       result = super(ImageRepoProxy, self).save(image)
     File "/usr/lib/python2.7/dist-packages/glance/domain/proxy.py", line 65, in save
       result = self.base.save(base_item)
     File "/usr/lib/python2.7/dist-packages/glance/db/__init__.py", line 170, in save
       image.tags)
     File "/usr/lib/python2.7/dist-packages/glance/db/registry/api.py", line 59,
   in wrapper
       return func(client, *args, **kwargs)
     File "/usr/lib/python2.7/dist-packages/glance/db/registry/api.py", line 200, in image_tag_set_all
       client.image_tag_set_all(image_id=image_id, tags=tags)
     File "/usr/lib/python2.7/dist-packages/glance/common/rpc.py", line 274, in method_proxy
       return self.do_request(item, **kw)
     File "/usr/lib/python2.7/dist-packages/glance/common/rpc.py", line 240, in do_request
       'kwargs': kwargs}])
     File
   "/usr/lib/python2.7/dist-packages/glance/common/client.py", line 64, in wrapped
       return func(self, *args, **kwargs)
     File "/usr/lib/python2.7/dist-packages/glance/common/rpc.py", line 223, in bulk_request
       body = self._serializer.to_json(commands)
     File "/usr/lib/python2.7/dist-packages/glance/common/wsgi.py", line 577, in to_json
       return json.dumps(data, default=self._sanitizer)
     File "/usr/lib/python2.7/json/__init__.py", line 238, in dumps

   **kw).encode(obj)
     File "/usr/lib/python2.7/json/encoder.py", line 201, in encode
       chunks = self.iterencode(o, _one_shot=True)
     File "/usr/lib/python2.7/json/encoder.py", line 264, in iterencode
       return _iterencode(o, 0)
   ValueError: Circular reference detected

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