Merge pull request #2688 from coreos-inc/build-badge-query

Remove expensive call in build badge

data/model/repository.py

@@ -620,3 +620,14 @@ def list_popular_public_repos(action_count_threshold, time_span, repo_kind='imag
           .group_by(RepositoryActionCount.repository, Repository.name, Namespace.username)
           .having(fn.Sum(RepositoryActionCount.count) >= action_count_threshold)
           .tuples())
+
+
+def is_empty(namespace_name, repository_name):
+  """ Returns if the repository referenced by the given namespace and name is empty. If the repo
+      doesn't exist, returns True.
+  """
+  try:
+    tag.list_repository_tags(namespace_name, repository_name).limit(1).get()
+    return False
+  except RepositoryTag.DoesNotExist:
+    return True