Return complete resp from volumes_extensions_client

Currently compute volumes_extensions_client returns Response by
removing top key from Response.
For example-
 return service_client.ResponseBody(resp, body['volume'])

As service clients are in direction to move to Tempest-lib, all
service clients should return Response without any truncation.
One good example is Resource pagination links which are lost with current
way of return value. Resource pagination links are present in parallel
(not inside) to top key of Response.

This patch makes compute volumes_extensions_client to return
complete Response body.

Implements: blueprint method-return-value-and-move-service-clients-to-lib

Change-Id: Ibe5e00878c797e2d0b3f72712c9f3b66effe7812
diff --git a/tempest/api/compute/servers/test_delete_server.py b/tempest/api/compute/servers/test_delete_server.py
index d7b4470..5d461ab 100644
--- a/tempest/api/compute/servers/test_delete_server.py
+++ b/tempest/api/compute/servers/test_delete_server.py
@@ -117,7 +117,8 @@
         device = '/dev/%s' % CONF.compute.volume_device_name
         server = self.create_test_server(wait_until='ACTIVE')
 
-        volume = volumes_client.create_volume(size=CONF.volume.volume_size)
+        volume = (volumes_client.create_volume(size=CONF.volume.volume_size)
+                  ['volume'])
         self.addCleanup(volumes_client.delete_volume, volume['id'])
         waiters.wait_for_volume_status(volumes_client,
                                        volume['id'], 'available')
diff --git a/tempest/api/compute/servers/test_server_rescue_negative.py b/tempest/api/compute/servers/test_server_rescue_negative.py
index 9d06188..f8567cf 100644
--- a/tempest/api/compute/servers/test_server_rescue_negative.py
+++ b/tempest/api/compute/servers/test_server_rescue_negative.py
@@ -62,7 +62,7 @@
     def _create_volume(self):
         volume = self.volumes_extensions_client.create_volume(
             size=CONF.volume.volume_size, display_name=data_utils.rand_name(
-                self.__class__.__name__ + '_volume'))
+                self.__class__.__name__ + '_volume'))['volume']
         self.addCleanup(self.delete_volume, volume['id'])
         waiters.wait_for_volume_status(self.volumes_extensions_client,
                                        volume['id'], 'available')
diff --git a/tempest/api/compute/volumes/test_volumes_get.py b/tempest/api/compute/volumes/test_volumes_get.py
index f05a5a3..6074054 100644
--- a/tempest/api/compute/volumes/test_volumes_get.py
+++ b/tempest/api/compute/volumes/test_volumes_get.py
@@ -48,7 +48,7 @@
         # Create volume
         volume = self.client.create_volume(size=CONF.volume.volume_size,
                                            display_name=v_name,
-                                           metadata=metadata)
+                                           metadata=metadata)['volume']
         self.addCleanup(self.delete_volume, volume['id'])
         self.assertIn('id', volume)
         self.assertIn('displayName', volume)
@@ -60,7 +60,7 @@
         # Wait for Volume status to become ACTIVE
         waiters.wait_for_volume_status(self.client, volume['id'], 'available')
         # GET Volume
-        fetched_volume = self.client.show_volume(volume['id'])
+        fetched_volume = self.client.show_volume(volume['id'])['volume']
         # Verification of details of fetched Volume
         self.assertEqual(v_name,
                          fetched_volume['displayName'],
diff --git a/tempest/api/compute/volumes/test_volumes_list.py b/tempest/api/compute/volumes/test_volumes_list.py
index 421d96f..f0ed141 100644
--- a/tempest/api/compute/volumes/test_volumes_list.py
+++ b/tempest/api/compute/volumes/test_volumes_list.py
@@ -56,10 +56,10 @@
             try:
                 volume = cls.client.create_volume(size=CONF.volume.volume_size,
                                                   display_name=v_name,
-                                                  metadata=metadata)
+                                                  metadata=metadata)['volume']
                 waiters.wait_for_volume_status(cls.client,
                                                volume['id'], 'available')
-                volume = cls.client.show_volume(volume['id'])
+                volume = cls.client.show_volume(volume['id'])['volume']
                 cls.volume_list.append(volume)
                 cls.volume_id_list.append(volume['id'])
             except Exception:
@@ -89,7 +89,7 @@
     def test_volume_list(self):
         # Should return the list of Volumes
         # Fetch all Volumes
-        fetched_list = self.client.list_volumes()
+        fetched_list = self.client.list_volumes()['volumes']
         # Now check if all the Volumes created in setup are in fetched list
         missing_volumes = [
             v for v in self.volume_list if v not in fetched_list
@@ -104,7 +104,7 @@
     def test_volume_list_with_details(self):
         # Should return the list of Volumes with details
         # Fetch all Volumes
-        fetched_list = self.client.list_volumes(detail=True)
+        fetched_list = self.client.list_volumes(detail=True)['volumes']
         # Now check if all the Volumes created in setup are in fetched list
         missing_volumes = [
             v for v in self.volume_list if v not in fetched_list
@@ -119,7 +119,7 @@
     def test_volume_list_param_limit(self):
         # Return the list of volumes based on limit set
         params = {'limit': 2}
-        fetched_vol_list = self.client.list_volumes(**params)
+        fetched_vol_list = self.client.list_volumes(**params)['volumes']
 
         self.assertEqual(len(fetched_vol_list), params['limit'],
                          "Failed to list volumes by limit set")
@@ -128,7 +128,8 @@
     def test_volume_list_with_detail_param_limit(self):
         # Return the list of volumes with details based on limit set.
         params = {'limit': 2}
-        fetched_vol_list = self.client.list_volumes(detail=True, **params)
+        fetched_vol_list = self.client.list_volumes(detail=True,
+                                                    **params)['volumes']
 
         self.assertEqual(len(fetched_vol_list), params['limit'],
                          "Failed to list volume details by limit set")
@@ -137,9 +138,9 @@
     def test_volume_list_param_offset_and_limit(self):
         # Return the list of volumes based on offset and limit set.
         # get all volumes list
-        all_vol_list = self.client.list_volumes()
+        all_vol_list = self.client.list_volumes()['volumes']
         params = {'offset': 1, 'limit': 1}
-        fetched_vol_list = self.client.list_volumes(**params)
+        fetched_vol_list = self.client.list_volumes(**params)['volumes']
 
         # Validating length of the fetched volumes
         self.assertEqual(len(fetched_vol_list), params['limit'],
@@ -154,9 +155,10 @@
     def test_volume_list_with_detail_param_offset_and_limit(self):
         # Return the list of volumes details based on offset and limit set.
         # get all volumes list
-        all_vol_list = self.client.list_volumes(detail=True)
+        all_vol_list = self.client.list_volumes(detail=True)['volumes']
         params = {'offset': 1, 'limit': 1}
-        fetched_vol_list = self.client.list_volumes(detail=True, **params)
+        fetched_vol_list = self.client.list_volumes(detail=True,
+                                                    **params)['volumes']
 
         # Validating length of the fetched volumes
         self.assertEqual(len(fetched_vol_list), params['limit'],
diff --git a/tempest/common/waiters.py b/tempest/common/waiters.py
index b0afcc1..248513e 100644
--- a/tempest/common/waiters.py
+++ b/tempest/common/waiters.py
@@ -162,20 +162,13 @@
 
 def wait_for_volume_status(client, volume_id, status):
     """Waits for a Volume to reach a given status."""
-    body = client.show_volume(volume_id)
-    if 'volume' in body:
-        body = body['volume']
+    body = client.show_volume(volume_id)['volume']
     volume_status = body['status']
     start = int(time.time())
 
     while volume_status != status:
         time.sleep(client.build_interval)
-        body = client.show_volume(volume_id)
-        # TODO(jswarren) always extract 'volume' value
-        # once the compute clients also return the full
-        # response.
-        if 'volume' in body:
-            body = body['volume']
+        body = client.show_volume(volume_id)['volume']
         volume_status = body['status']
         if volume_status == 'error':
             raise exceptions.VolumeBuildErrorException(volume_id=volume_id)
diff --git a/tempest/services/compute/json/volumes_extensions_client.py b/tempest/services/compute/json/volumes_extensions_client.py
index c86aaff..db92351 100644
--- a/tempest/services/compute/json/volumes_extensions_client.py
+++ b/tempest/services/compute/json/volumes_extensions_client.py
@@ -35,7 +35,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.list_volumes, resp, body)
-        return service_client.ResponseBodyList(resp, body['volumes'])
+        return service_client.ResponseBody(resp, body)
 
     def show_volume(self, volume_id):
         """Returns the details of a single volume."""
@@ -43,7 +43,7 @@
         resp, body = self.get(url)
         body = json.loads(body)
         self.validate_response(schema.create_get_volume, resp, body)
-        return service_client.ResponseBody(resp, body['volume'])
+        return service_client.ResponseBody(resp, body)
 
     def create_volume(self, **kwargs):
         """
@@ -57,7 +57,7 @@
         resp, body = self.post('os-volumes', post_body)
         body = json.loads(body)
         self.validate_response(schema.create_get_volume, resp, body)
-        return service_client.ResponseBody(resp, body['volume'])
+        return service_client.ResponseBody(resp, body)
 
     def delete_volume(self, volume_id):
         """Deletes the Specified Volume."""