Use addClassResourceCleanup for cleanup of volume resources

This is to use addClassResourceCleanup for the cleanup of
volume resources in base.py, so the resource_cleanup can
be removed.

Change-Id: Ieb2c1c31d63b62d9cd215e7fe014df1c03f4f3b1
diff --git a/tempest/api/volume/base.py b/tempest/api/volume/base.py
index 63ef85b..cfe2068 100644
--- a/tempest/api/volume/base.py
+++ b/tempest/api/volume/base.py
@@ -101,20 +101,12 @@
                 cls.min_microversion,
                 CONF.volume.min_microversion))
 
-        cls.snapshots = []
-        cls.volumes = []
         cls.image_ref = CONF.compute.image_ref
         cls.flavor_ref = CONF.compute.flavor_ref
         cls.build_interval = CONF.volume.build_interval
         cls.build_timeout = CONF.volume.build_timeout
 
     @classmethod
-    def resource_cleanup(cls):
-        cls.clear_snapshots()
-        cls.clear_volumes()
-        super(BaseVolumeTest, cls).resource_cleanup()
-
-    @classmethod
     def create_volume(cls, wait_until='available', **kwargs):
         """Wrapper utility that returns a test volume.
 
@@ -133,7 +125,9 @@
             kwargs['name'] = name
 
         volume = cls.volumes_client.create_volume(**kwargs)['volume']
-        cls.volumes.append(volume)
+        cls.addClassResourceCleanup(test_utils.call_and_ignore_notfound_exc,
+                                    cls.delete_volume, cls.volumes_client,
+                                    volume['id'])
         waiters.wait_for_volume_resource_status(cls.volumes_client,
                                                 volume['id'], wait_until)
         return volume
@@ -147,7 +141,8 @@
 
         snapshot = cls.snapshots_client.create_snapshot(
             volume_id=volume_id, **kwargs)['snapshot']
-        cls.snapshots.append(snapshot['id'])
+        cls.addClassResourceCleanup(test_utils.call_and_ignore_notfound_exc,
+                                    cls.delete_snapshot, snapshot['id'])
         waiters.wait_for_volume_resource_status(cls.snapshots_client,
                                                 snapshot['id'], 'available')
         return snapshot
@@ -176,14 +171,13 @@
         client.delete_volume(volume_id)
         client.wait_for_resource_deletion(volume_id)
 
-    def delete_snapshot(self, snapshot_id, snapshots_client=None):
+    @classmethod
+    def delete_snapshot(cls, snapshot_id, snapshots_client=None):
         """Delete snapshot by the given client"""
         if snapshots_client is None:
-            snapshots_client = self.snapshots_client
+            snapshots_client = cls.snapshots_client
         snapshots_client.delete_snapshot(snapshot_id)
         snapshots_client.wait_for_resource_deletion(snapshot_id)
-        if snapshot_id in self.snapshots:
-            self.snapshots.remove(snapshot_id)
 
     def attach_volume(self, server_id, volume_id):
         """Attach a volume to a server"""
@@ -197,31 +191,6 @@
         self.addCleanup(self.servers_client.detach_volume, server_id,
                         volume_id)
 
-    @classmethod
-    def clear_volumes(cls):
-        for volume in cls.volumes:
-            try:
-                cls.volumes_client.delete_volume(volume['id'])
-            except Exception:
-                pass
-
-        for volume in cls.volumes:
-            try:
-                cls.volumes_client.wait_for_resource_deletion(volume['id'])
-            except Exception:
-                pass
-
-    @classmethod
-    def clear_snapshots(cls):
-        for snapshot in cls.snapshots:
-            test_utils.call_and_ignore_notfound_exc(
-                cls.snapshots_client.delete_snapshot, snapshot)
-
-        for snapshot in cls.snapshots:
-            test_utils.call_and_ignore_notfound_exc(
-                cls.snapshots_client.wait_for_resource_deletion,
-                snapshot)
-
     def create_server(self, wait_until='ACTIVE', **kwargs):
         name = kwargs.pop(
             'name',
@@ -282,26 +251,13 @@
             cls.os_admin.volume_scheduler_stats_v2_client
 
     @classmethod
-    def resource_setup(cls):
-        super(BaseVolumeAdminTest, cls).resource_setup()
-
-        cls.qos_specs = []
-        cls.volume_types = []
-
-    @classmethod
-    def resource_cleanup(cls):
-        cls.clear_qos_specs()
-        super(BaseVolumeAdminTest, cls).resource_cleanup()
-        cls.clear_volume_types()
-
-    @classmethod
     def create_test_qos_specs(cls, name=None, consumer=None, **kwargs):
         """create a test Qos-Specs."""
         name = name or data_utils.rand_name(cls.__name__ + '-QoS')
         consumer = consumer or 'front-end'
         qos_specs = cls.admin_volume_qos_client.create_qos(
             name=name, consumer=consumer, **kwargs)['qos_specs']
-        cls.qos_specs.append(qos_specs['id'])
+        cls.addClassResourceCleanup(cls.clear_qos_spec, qos_specs['id'])
         return qos_specs
 
     @classmethod
@@ -310,7 +266,7 @@
         name = name or data_utils.rand_name(cls.__name__ + '-volume-type')
         volume_type = cls.admin_volume_types_client.create_volume_type(
             name=name, **kwargs)['volume_type']
-        cls.volume_types.append(volume_type['id'])
+        cls.addClassResourceCleanup(cls.clear_volume_type, volume_type['id'])
         return volume_type
 
     def create_group_type(self, name=None, **kwargs):
@@ -324,22 +280,18 @@
         return group_type
 
     @classmethod
-    def clear_qos_specs(cls):
-        for qos_id in cls.qos_specs:
-            test_utils.call_and_ignore_notfound_exc(
-                cls.admin_volume_qos_client.delete_qos, qos_id)
+    def clear_qos_spec(cls, qos_id):
+        test_utils.call_and_ignore_notfound_exc(
+            cls.admin_volume_qos_client.delete_qos, qos_id)
 
-        for qos_id in cls.qos_specs:
-            test_utils.call_and_ignore_notfound_exc(
-                cls.admin_volume_qos_client.wait_for_resource_deletion, qos_id)
+        test_utils.call_and_ignore_notfound_exc(
+            cls.admin_volume_qos_client.wait_for_resource_deletion, qos_id)
 
     @classmethod
-    def clear_volume_types(cls):
-        for vol_type in cls.volume_types:
-            test_utils.call_and_ignore_notfound_exc(
-                cls.admin_volume_types_client.delete_volume_type, vol_type)
+    def clear_volume_type(cls, vol_type_id):
+        test_utils.call_and_ignore_notfound_exc(
+            cls.admin_volume_types_client.delete_volume_type, vol_type_id)
 
-        for vol_type in cls.volume_types:
-            test_utils.call_and_ignore_notfound_exc(
-                cls.admin_volume_types_client.wait_for_resource_deletion,
-                vol_type)
+        test_utils.call_and_ignore_notfound_exc(
+            cls.admin_volume_types_client.wait_for_resource_deletion,
+            vol_type_id)
diff --git a/tempest/api/volume/test_volumes_backup.py b/tempest/api/volume/test_volumes_backup.py
index 1e240b8..552b231 100644
--- a/tempest/api/volume/test_volumes_backup.py
+++ b/tempest/api/volume/test_volumes_backup.py
@@ -40,7 +40,7 @@
             backup_id)['restore']
 
         # Delete backup
-        self.addCleanup(self.volumes_client.delete_volume,
+        self.addCleanup(self.delete_volume, self.volumes_client,
                         restored_volume['volume_id'])
         self.assertEqual(backup_id, restored_volume['backup_id'])
         waiters.wait_for_volume_resource_status(self.backups_client,
@@ -59,8 +59,7 @@
                     "vol-meta2": "value2",
                     "vol-meta3": "value3"}
         volume = self.create_volume(metadata=metadata)
-        self.addCleanup(self.volumes_client.delete_volume,
-                        volume['id'])
+        self.addCleanup(self.delete_volume, self.volumes_client, volume['id'])
 
         # Create a backup
         backup_name = data_utils.rand_name(
@@ -109,8 +108,7 @@
         """
         # Create a server
         volume = self.create_volume()
-        self.addCleanup(self.volumes_client.delete_volume,
-                        volume['id'])
+        self.addCleanup(self.delete_volume, self.volumes_client, volume['id'])
         server = self.create_server()
         # Attach volume to instance
         self.attach_volume(server['id'], volume['id'])