Introduces MV to add volume type ID in volumes details

Introduces microversion (MV) 3.63 to add volume type ID
in the volume details.

This change comes to fix a problem we found in Gnocchi concerning
volumes monitored data. When a volume event is created, Cinder uses
the volume type as the volume type ID. On the other hand, Ceilometer
pollsters are always updating the volume_type value in Gnocchi with the
volume type from volume details API (which uses the volume type name
value).

That situation creates a massive number of resource revisions in
Gnocchi. This MV along with the Dynamic pollster system in Ceilometer
enables operators to overcome the issue.

Closes-Bug: https://bugs.launchpad.net/cinder/+bug/1911660

Change-Id: Icb88faeb00040250a25a5630aeb312a8434ed3c8
Signed-off-by: Rafael Weingärtner <rafael@apache.org>

api-ref/source/v3/parameters.yaml

@@ -3121,6 +3121,13 @@ volume_type_detail:
   in: body
   required: false
   type: string
+volume_type_id_363:
+  description: |
+    The associated volume type ID for the volume.
+  in: body
+  required: true
+  type: object
+  min_version: 3.63
 volume_type_id_body:
   description: |
     The UUID of the volume type.
@@ -3129,7 +3136,7 @@ volume_type_id_body:
   type: string
 volume_type_vol:
   description: |
-    The associated volume type for the volume.
+    The associated volume type name for the volume.
   in: body
   required: true
   type: string

api-ref/source/v3/samples/versions/version-show-response.json

@@ -21,8 +21,8 @@
             ],
             "min_version": "3.0",
             "status": "CURRENT",
-            "updated": "2018-07-17T00:00:00Z",
+            "updated": "2020-11-19T08:56:00Z",
-            "version": "3.62"
+            "version": "3.63"
         }
     ]
 }

api-ref/source/v3/samples/versions/versions-response.json

@@ -45,8 +45,8 @@
             ],
             "min_version": "3.0",
             "status": "CURRENT",
-            "updated": "2018-07-17T00:00:00Z",
+            "updated": "2020-11-19T08:56:00Z",
-            "version": "3.62"
+            "version": "3.63"
         }
     ]
 }

api-ref/source/v3/samples/volumes/volumes-list-detailed-response.json

@@ -34,7 +34,13 @@
             "status": "creating",
             "updated_at": null,
             "user_id": "c853ca26-e8ea-4797-8a52-ee124a013d0e",
-            "volume_type": "__DEFAULT__"
+            "volume_type": "__DEFAULT__",
+            "volume_type_id": "5fed9d7c-401d-46e2-8e80-f30c70cb7e1d",
+            "provider_id": null,
+            "group_id": null,
+            "service_uuid": null,
+            "shared_targets": true,
+            "cluster_name": null
         }
     ]
 }

api-ref/source/v3/volumes-v3-volumes.inc

@@ -130,6 +130,7 @@ Response Parameters
    - created_at: created_at
    - volumes: volumes
    - volume_type: volume_type_vol
+   - volume_type_id: volume_type_id_363
    - group_id: group_id_optional
    - volumes_links: links_vol_optional
    - count: count
@@ -375,6 +376,7 @@ Response Parameters
    - bootable: bootable_response
    - created_at: created_at
    - volume_type: volume_type_vol
+   - volume_type_id: volume_type_id_363
    - service_uuid: service_uuid
    - shared_targets: shared_targets
    - cluster_name: cluster_name

cinder/api/microversions.py

@@ -165,6 +165,8 @@ VOLUME_CLUSTER_NAME = '3.61'
 
 DEFAULT_TYPE_OVERRIDES = '3.62'
 
+VOLUME_TYPE_ID_IN_VOLUME_DETAIL = '3.63'
+
 
 def get_mv_header(version):
     """Gets a formatted HTTP microversion header.

cinder/api/openstack/api_version_request.py

@@ -142,6 +142,11 @@ REST_API_VERSION_HISTORY = """
     * 3.61 - Add ``cluster_name`` attribute to response body of volume details
              for admin.
     * 3.62 - Default volume type overrides
+    * 3.63 - Include volume type ID in the volume details JSON response. Before
+             this microversion (MV), Cinder returns only the volume type name
+             in the volume details. This MV affects the volume detail list
+             ("GET /v3/{project_id}/volumes/detail") and volume-show
+             ("GET /v3/{project_id}/volumes/{volume_id}") calls.
 """
 
 # The minimum and maximum versions of the API supported
@@ -149,9 +154,9 @@ REST_API_VERSION_HISTORY = """
 # minimum version of the API supported.
 # Explicitly using /v2 endpoints will still work
 _MIN_API_VERSION = "3.0"
-_MAX_API_VERSION = "3.62"
+_MAX_API_VERSION = "3.63"
 _LEGACY_API_VERSION2 = "2.0"
-UPDATED = "2020-10-14T00:00:00Z"
+UPDATED = "2020-11-19T08:56:00Z"
 
 
 # NOTE(cyeoh): min and max versions declared as functions so we can

cinder/api/openstack/rest_api_version_history.rst

@@ -479,3 +479,9 @@ Active/Active HA mode.
 Add support for set, get, and unset a default volume type for a specific
 project. Setting this default overrides the configured default_volume_type
 value.
+
+3.63
+----
+Includes volume type ID in the volume-show and volume-detail-list JSON
+responses. Before this microversion, Cinder returns only the volume type name
+in the volume details.

cinder/api/v2/views/volumes.py

@@ -75,7 +75,7 @@ class ViewBuilder(common.ViewBuilder):
                 'updated_at': volume.get('updated_at'),
                 'name': volume.get('display_name'),
                 'description': volume.get('display_description'),
-                'volume_type': self._get_volume_type(volume),
+                'volume_type': self._get_volume_type(request, volume),
                 'snapshot_id': volume.get('snapshot_id'),
                 'source_volid': volume.get('source_volid'),
                 'metadata': self._get_volume_metadata(volume),
@@ -138,8 +138,8 @@ class ViewBuilder(common.ViewBuilder):
         """Retrieve the metadata of the volume object."""
         return volume.metadata
 
-    def _get_volume_type(self, volume):
+    def _get_volume_type(self, request, volume):
-        """Retrieve the type the volume object."""
+        """Retrieve the type of the volume object."""
         if volume['volume_type_id'] and volume.get('volume_type'):
             return volume['volume_type']['name']
         else:

cinder/api/v3/views/volumes.py

@@ -66,6 +66,10 @@ class ViewBuilder(views_v2.ViewBuilder):
             volume_ref['volume']['cluster_name'] = volume.get(
                 'cluster_name', None)
 
+        if req_version.matches(mv.VOLUME_TYPE_ID_IN_VOLUME_DETAIL, None):
+            volume_ref[
+                'volume']["volume_type_id"] = volume['volume_type'].get('id')
+
         return volume_ref
 
     def _list_view(self, func, request, volumes, volume_count,
@@ -96,3 +100,18 @@ class ViewBuilder(views_v2.ViewBuilder):
             volumes_dict['count'] = volume_count
 
         return volumes_dict
+
+    def _get_volume_type(self, request, volume):
+        """Returns the volume type of the volume.
+
+        Retrieves the volume type name for microversion 3.63.
+        Otherwise, it uses the default implementation from super.
+        """
+
+        req_version = request.api_version_request
+        if req_version.matches(mv.VOLUME_TYPE_ID_IN_VOLUME_DETAIL):
+            if volume.get('volume_type'):
+                return volume['volume_type']['name']
+            return None
+
+        return super(ViewBuilder, self)._get_volume_type(request, volume)

cinder/tests/functional/api_sample_tests/samples/volumes/volumes-list-detailed-response.json.tpl

@@ -34,7 +34,13 @@
             "status": "creating",
             "updated_at": null,
             "user_id": "%(uuid)s",
-            "volume_type": "__DEFAULT__"
+            "volume_type": "%(name)s",
+            "volume_type_id": "%(uuid)s",
+            "service_uuid": null,
+            "provider_id": null,
+            "group_id": null,
+            "shared_targets": true,
+            "cluster_name": null
         }
     ]
 }

cinder/tests/functional/api_sample_tests/test_volumes.py

@@ -12,6 +12,7 @@
 
 from oslo_serialization import jsonutils
 
+from cinder.api.microversions import VOLUME_TYPE_ID_IN_VOLUME_DETAIL
 from cinder.tests.functional import api_samples_test_base
 
 
@@ -40,10 +41,15 @@ class VolumesSampleJsonTest(VolumesSampleBase):
         self.response = self._create_volume()
 
     def test_volume_list_detail(self):
+        original_api_version = self.api.api_version
 
-        response = self._do_get('volumes/detail')
+        try:
-        self._verify_response('volumes-list-detailed-response',
+            self.api.api_version = VOLUME_TYPE_ID_IN_VOLUME_DETAIL
-                              {}, response, 200)
+            response = self._do_get('volumes/detail')
+            self._verify_response('volumes-list-detailed-response',
+                                  {}, response, 200)
+        finally:
+            self.api.api_version = original_api_version
 
     def test_volume_create(self):
 

releasenotes/notes/mv-volume-type-name-and-id-5f4fd8480874fe9b.yaml

@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    Introduces microversion (MV) 3.63, which includes volume type ID in the
+    volume details JSON response. This MV affects the volume detail list
+    (``GET /v3/{project_id}/volumes/detail``), and volume-show
+    (``GET /v3/{project_id}/volumes/{volume_id}``) calls.