Move manifest backfill for V1 tags into the new registry model interface

endpoints/v2/manifest.py

@@ -9,6 +9,7 @@ import features
 from app import docker_v2_signing_key, app, metric_queue
 from auth.registry_jwt_auth import process_registry_jwt_auth
 from digest import digest_tools
+from data.registry_model import registry_model
 from endpoints.decorators import anon_protect, parse_repository_name
 from endpoints.v2 import v2_bp, require_repo_read, require_repo_write
 from endpoints.v2.models_interface import Label
@@ -52,7 +53,18 @@ def fetch_manifest_by_tagname(namespace_name, repo_name, manifest_ref):
       else:
         raise ManifestUnknown()
 
-    manifest = _generate_and_store_manifest(namespace_name, repo_name, manifest_ref)
+    repo_ref = registry_model.lookup_repository(namespace_name, repo_name)
+    if repo_ref is None:
+      raise ManifestUnknown()
+
+    tag = registry_model.get_repo_tag(repo_ref, manifest_ref, include_legacy_image=True)
+    if tag is None:
+      raise ManifestUnknown()
+
+    if not registry_model.backfill_manifest_for_tag(tag):
+      raise ManifestUnknown()
+
+    manifest = model.get_manifest_by_tag(namespace_name, repo_name, manifest_ref)
     if manifest is None:
       raise ManifestUnknown()
 
@@ -259,35 +271,3 @@ def delete_manifest_by_digest(namespace_name, repo_name, manifest_ref):
     track_and_log('delete_tag', tag.repository, tag=tag.name, digest=manifest_ref)
 
   return Response(status=202)
-
-
-def _generate_and_store_manifest(namespace_name, repo_name, tag_name):
-  """ Generates and stores a manifest for an existing V1-only tag. """
-  # TODO(jschorr): Remove once we are fully on Manifest-based model.
-
-  # Find the v1 metadata for this image and its parents.
-  v1_metadata = model.get_docker_v1_metadata_by_tag(namespace_name, repo_name, tag_name)
-  parents_v1_metadata = model.get_parents_docker_v1_metadata(namespace_name, repo_name,
-                                                             v1_metadata.image_id)
-
-  # If the manifest is being generated under the library namespace, then we make its namespace
-  # empty.
-  manifest_namespace = namespace_name
-  if features.LIBRARY_SUPPORT and namespace_name == app.config['LIBRARY_NAMESPACE']:
-    manifest_namespace = ''
-
-  # Create and populate the manifest builder
-  builder = DockerSchema1ManifestBuilder(manifest_namespace, repo_name, tag_name)
-
-  # Add the leaf layer
-  builder.add_layer(v1_metadata.content_checksum, v1_metadata.compat_json)
-
-  for parent_v1_metadata in parents_v1_metadata:
-    builder.add_layer(parent_v1_metadata.content_checksum, parent_v1_metadata.compat_json)
-
-  # Sign the manifest with our signing key.
-  manifest = builder.build(docker_v2_signing_key)
-
-  # Write the manifest to the DB.
-  model.create_manifest_and_update_tag(namespace_name, repo_name, tag_name, manifest)
-  return manifest