Switch get repo API to use a single list tags query

Should make things faster since the join occurs on the database side

endpoints/api/repository.py

@@ -322,7 +322,7 @@ class Repository(RepositoryParamResource):
       return repo_data
 
     # Older image-only repo code.
-    def tag_view(tag, manifest):
+    def tag_view(tag):
       tag_info = {
         'name': tag.name,
         'image_id': tag.image.docker_image_id,
@@ -333,16 +333,14 @@ class Repository(RepositoryParamResource):
         last_modified = format_date(datetime.fromtimestamp(tag.lifetime_start_ts))
         tag_info['last_modified'] = last_modified
 
-      if manifest is not None:
-        tag_info['manifest_digest'] = manifest.digest
+      if tag.tagmanifest is not None:
+        tag_info['manifest_digest'] = tag.tagmanifest.digest
 
       return tag_info
 
     stats = None
-    tags = model.tag.list_repository_tags(namespace, repository, include_storage=True)
-    manifests = model.tag.get_tag_manifests(tags)
-
-    tag_dict = {tag.name: tag_view(tag, manifests.get(tag.id)) for tag in tags}
+    tags = model.tag.list_active_repo_tags(repo)
+    tag_dict = {tag.name: tag_view(tag) for tag in tags}
     if parsed_args['includeStats']:
       stats = []
       found_dates = {}
@@ -419,7 +417,7 @@ class Repository(RepositoryParamResource):
 
     # Remove any builds from the queue.
     dockerfile_build_queue.delete_namespaced_items(namespace, repository)
-    
+
     log_action('delete_repo', namespace,
                {'repo': repository, 'namespace': namespace})
     return '', 204