Merge "Fix image-volume cache to use volume object when evicting"

cinder/image/cache.py

@@ -20,6 +20,7 @@ from oslo_log import log as logging
 from oslo_utils import timeutils
 
 from cinder.i18n import _LW
+from cinder import objects
 from cinder import rpc
 
 CONF = cfg.CONF
@@ -191,10 +192,10 @@ class ImageVolumeCache(object):
 
     def _delete_image_volume(self, context, cache_entry):
         """Delete a volume and remove cache entry."""
-        volume_ref = self.db.volume_get(context, cache_entry['volume_id'])
+        volume = objects.Volume.get_by_id(context, cache_entry['volume_id'])
 
         # Delete will evict the cache entry.
-        self.volume_api.delete(context, volume_ref)
+        self.volume_api.delete(context, volume)
 
     def _should_update_entry(self, cache_entry, image_meta):
         """Ensure that the cache entry image data is still valid."""

cinder/tests/unit/image/test_cache.py

@@ -144,7 +144,8 @@ class ImageVolumeCacheTestCase(test.TestCase):
         self.assertEqual(image_id, msg['payload']['image_id'])
         self.assertEqual(1, len(self.notifier.notifications))
 
-    def test_get_entry_needs_update(self):
+    @mock.patch('cinder.objects.Volume.get_by_id')
+    def test_get_entry_needs_update(self, mock_volume_by_id):
         cache = self._build_cache()
         entry = self._build_entry()
         volume_ref = {
@@ -160,8 +161,9 @@ class ImageVolumeCacheTestCase(test.TestCase):
         }
         (self.mock_db.
          image_volume_cache_get_and_update_last_used.return_value) = entry
-        mock_volume = mock.Mock()
-        self.mock_db.volume_get.return_value = mock_volume
+
+        mock_volume = mock.MagicMock()
+        mock_volume_by_id.return_value = mock_volume
 
         found_entry = cache.get_entry(self.context,
                                       volume_ref,