Add version parameter to adapter.

The version parameter was left out of adapter previously because setting
a version number triggers discovery and I felt that it was not ready for
the other services.

However if it isn't set then it won't be used and we may as well
implement it here once rather than have the individual services that do
support it override it themselves.

Change-Id: I707380a01175dc19b59de32cbb8fd2bb123d7335

keystoneclient/adapter.py

@@ -27,7 +27,7 @@ class Adapter(object):
     @utils.positional()
     def __init__(self, session, service_type=None, service_name=None,
                  interface=None, region_name=None, endpoint_override=None,
-                 auth=None, user_agent=None):
+                 version=None, auth=None, user_agent=None):
         """Create a new adapter.
 
         :param Session session: The session object to wrap.
@@ -37,6 +37,7 @@ class Adapter(object):
         :param str region_name: The default region_name for URL discovery.
         :param str endpoint_override: Always use this endpoint URL for requests
                                       for this client.
+        :param tuple version: The version that this API targets.
         :param auth.BaseAuthPlugin auth: An auth plugin to use instead of the
                                          session one.
         :param str user_agent: The User-Agent string to set.
@@ -47,6 +48,7 @@ class Adapter(object):
         self.interface = interface
         self.region_name = region_name
         self.endpoint_override = endpoint_override
+        self.version = version
         self.user_agent = user_agent
         self.auth = auth
 
@@ -61,6 +63,8 @@ class Adapter(object):
             endpoint_filter.setdefault('interface', self.interface)
         if self.region_name:
             endpoint_filter.setdefault('region_name', self.region_name)
+        if self.version:
+            endpoint_filter.setdefault('version', self.version)
 
         if self.endpoint_override:
             kwargs.setdefault('endpoint_override', self.endpoint_override)

keystoneclient/tests/test_session.py

@@ -548,6 +548,7 @@ class AdapterTest(utils.TestCase):
     INTERFACE = uuid.uuid4().hex
     REGION_NAME = uuid.uuid4().hex
     USER_AGENT = uuid.uuid4().hex
+    VERSION = uuid.uuid4().hex
 
     TEST_URL = CalledAuthPlugin.ENDPOINT
 
@@ -563,7 +564,8 @@ class AdapterTest(utils.TestCase):
                                service_name=self.SERVICE_NAME,
                                interface=self.INTERFACE,
                                region_name=self.REGION_NAME,
-                               user_agent=self.USER_AGENT)
+                               user_agent=self.USER_AGENT,
+                               version=self.VERSION)
 
         resp = adpt.get('/')
         self.assertEqual(resp.text, response)
@@ -576,6 +578,8 @@ class AdapterTest(utils.TestCase):
                          auth.endpoint_arguments['interface'])
         self.assertEqual(self.REGION_NAME,
                          auth.endpoint_arguments['region_name'])
+        self.assertEqual(self.VERSION,
+                         auth.endpoint_arguments['version'])
 
         self.assertTrue(auth.get_token_called)
         self.assertRequestHeaderEqual('User-Agent', self.USER_AGENT)