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

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

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https://bugs.launchpad.net/bugs/1468946

Title:
  glance metadef tables need unique constraints

Status in Glance:
  Fix Released

Bug description:
  Sometime during Kilo, the unique constraints on
  metadef_namespaces (namespace)
  metadef_objects(namespace_id, name)
  metadef_properties(namespace_id, name)
  metadef_tags(namespace_id, name)
  metadef_resource_types(name)
  were removed.
  I believe this was done erroneously to make the migrate_repo/versions/scripts match the db/sqlalchemy/models_metadef.py definitions. Unfortunately, the schema scripts were correct with the unique constraints and what should have changed was the models_metadef.py.
  This bug, puts one more migrate script in place which will rename any duplicate records it finds to make them unique and then re-establishes the unique constraints. It also, fixes models_metadef.py and adds in tests to create duplicates which should result in an HTTPConflict.

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