Change tar stream formatters to be based on tag and manifest, instead of legacy images

image/appc/__init__.py

@@ -18,10 +18,10 @@ class AppCImageFormatter(TarImageFormatter):
   Image formatter which produces an tarball according to the AppC specification.
   """
 
-  def stream_generator(self, repo_image, tag, synthetic_image_id, get_image_iterator,
+  def stream_generator(self, tag, manifest, synthetic_image_id, layer_iterator,
                        tar_stream_getter_iterator, reporter=None):
     image_mtime = 0
-    created = next(get_image_iterator()).v1_metadata.created
+    created = manifest.created_datetime
     if created is not None:
       image_mtime = calendar.timegm(created.utctimetuple())
 
@@ -31,8 +31,8 @@ class AppCImageFormatter(TarImageFormatter):
 
     # Yield the manifest.
     manifest = json.dumps(DockerV1ToACIManifestTranslator.build_manifest(
-      repo_image,
       tag,
+      manifest,
       synthetic_image_id
     ))
     yield self.tar_file('manifest', manifest, mtime=image_mtime)
@@ -170,16 +170,16 @@ class DockerV1ToACIManifestTranslator(object):
     return volumes
 
   @staticmethod
-  def build_manifest(repo_image, tag, synthetic_image_id):
+  def build_manifest(tag, manifest, synthetic_image_id):
     """ Builds an ACI manifest of an existing repository image. """
-    docker_layer_data = JSONPathDict(repo_image.compat_metadata)
+    docker_layer_data = JSONPathDict(manifest.leaf_layer.v1_metadata)
     config = docker_layer_data['config'] or JSONPathDict({})
 
-    namespace = repo_image.repository.namespace_name
-    repo_name = repo_image.repository.name
+    namespace = tag.repository.namespace_name
+    repo_name = tag.repository.name
     source_url = "%s://%s/%s/%s:%s" % (app.config['PREFERRED_URL_SCHEME'],
                                        app.config['SERVER_HOSTNAME'],
-                                       namespace, repo_name, tag)
+                                       namespace, repo_name, tag.name)
 
     # ACI requires that the execution command be absolutely referenced. Therefore, if we find
     # a relative command, we give it as an argument to /bin/sh to resolve and execute for us.