func (s *TagStore) pullV2Repository(r *registry.Session, out io.Writer, repoInfo *registry.RepositoryInfo, tag string, sf *streamformatter.StreamFormatter) error { endpoint, err := r.V2RegistryEndpoint(repoInfo.Index) if err != nil { if repoInfo.Index.Official { glog.V(1).Infof("Unable to pull from V2 registry, falling back to v1: %s", err) return ErrV2RegistryUnavailable } return fmt.Errorf("error getting registry endpoint: %s", err) } auth, err := r.GetV2Authorization(endpoint, repoInfo.RemoteName, true) if err != nil { return fmt.Errorf("error getting authorization: %s", err) } var layersDownloaded bool if tag == "" { glog.V(1).Infof("Pulling tag list from V2 registry for %s", repoInfo.CanonicalName) tags, err := r.GetV2RemoteTags(endpoint, repoInfo.RemoteName, auth) if err != nil { return err } if len(tags) == 0 { return registry.ErrDoesNotExist } for _, t := range tags { if downloaded, err := s.pullV2Tag(r, out, endpoint, repoInfo, t, sf, auth); err != nil { return err } else if downloaded { layersDownloaded = true } } } else { if downloaded, err := s.pullV2Tag(r, out, endpoint, repoInfo, tag, sf, auth); err != nil { return err } else if downloaded { layersDownloaded = true } } requestedTag := repoInfo.CanonicalName if len(tag) > 0 { requestedTag = utils.ImageReference(repoInfo.CanonicalName, tag) } WriteStatus(requestedTag, out, sf, layersDownloaded) return nil }