Convert V2's tag endpoints to use the new data model interface

data/model/tag.py

@@ -204,7 +204,7 @@ def get_tag_manifest_digests(tags):
   return {manifest.tag_id: manifest.digest for manifest in manifests}
 
 
-def list_active_repo_tags(repo):
+def list_active_repo_tags(repo, start_id=None, limit=None):
   """ Returns all of the active, non-hidden tags in a repository, joined to they images
       and (if present), their manifest.
   """
@@ -216,6 +216,12 @@ def list_active_repo_tags(repo):
                      .switch(RepositoryTag)
                      .join(TagManifest, JOIN.LEFT_OUTER))
 
+  if start_id is not None:
+    query = query.where(RepositoryTag.id >= start_id)
+
+  if limit is not None:
+    query = query.limit(limit)
+
   return query