Change endpoints/common to use a data interface

endpoints/common_models_interface.py

@@ -0,0 +1,29 @@
+from abc import ABCMeta, abstractmethod
+from collections import namedtuple
+
+from six import add_metaclass
+
+
+class User(namedtuple('User', ['uuid', 'username', 'email', 'given_name', 'family_name', 'company'])):
+  """
+  User represents a user.
+  """
+
+
+@add_metaclass(ABCMeta)
+class EndpointsCommonDataInterface(object):
+  """
+  Interface that represents all data store interactions required by the common endpoints lib.
+  """
+
+  @abstractmethod
+  def get_user(self, user_uuid):
+    """
+    Returns the User matching the given uuid, if any or None if none.
+    """
+
+  @abstractmethod
+  def get_namespace_uuid(self, namespace_name):
+    """
+    Returns the uuid of the Namespace with the given name, if any.
+    """