Example #1
0
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
}
Example #2
0
func (s *TagStore) pushV2Repository(r *registry.Session, localRepo Repository, 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 push to V2 registry, falling back to v1: %s", err)
			return ErrV2RegistryUnavailable
		}
		return fmt.Errorf("error getting registry endpoint: %s", err)
	}

	tags, err := s.getImageTags(localRepo, tag)
	if err != nil {
		return err
	}
	if len(tags) == 0 {
		return fmt.Errorf("No tags to push for %s", repoInfo.LocalName)
	}

	auth, err := r.GetV2Authorization(endpoint, repoInfo.RemoteName, false)
	if err != nil {
		return fmt.Errorf("error getting authorization: %s", err)
	}

	for _, tag := range tags {
		glog.V(1).Infof("Pushing repository: %s:%s", repoInfo.CanonicalName, tag)

		layerId, exists := localRepo[tag]
		if !exists {
			return fmt.Errorf("tag does not exist: %s", tag)
		}

		layer, err := s.graph.Get(layerId)
		if err != nil {
			return err
		}

		m := &registry.ManifestData{
			SchemaVersion: 1,
			Name:          repoInfo.RemoteName,
			Tag:           tag,
			Architecture:  layer.Architecture,
		}
		var metadata runconfig.Config
		if layer.Config != nil {
			metadata = *layer.Config
		}

		layersSeen := make(map[string]bool)
		layers := []*image.Image{layer}
		for ; layer != nil; layer, err = layer.GetParent() {
			if err != nil {
				return err
			}

			if layersSeen[layer.ID] {
				break
			}
			layers = append(layers, layer)
			layersSeen[layer.ID] = true
		}
		m.FSLayers = make([]*registry.FSLayer, len(layers))
		m.History = make([]*registry.ManifestHistory, len(layers))

		// Schema version 1 requires layer ordering from top to root
		for i, layer := range layers {
			glog.V(1).Infof("Pushing layer: %s", layer.ID)

			if layer.Config != nil && metadata.Image != layer.ID {
				if err := runconfig.Merge(&metadata, layer.Config); err != nil {
					return err
				}
			}
			jsonData, err := layer.RawJson()
			if err != nil {
				return fmt.Errorf("cannot retrieve the path for %s: %s", layer.ID, err)
			}

			checksum, err := layer.GetCheckSum(s.graph.ImageRoot(layer.ID))
			if err != nil {
				return fmt.Errorf("error getting image checksum: %s", err)
			}

			var exists bool
			if len(checksum) > 0 {
				dgst, err := digest.ParseDigest(checksum)
				if err != nil {
					return fmt.Errorf("Invalid checksum %s: %s", checksum, err)
				}

				// Call mount blob
				exists, err = r.HeadV2ImageBlob(endpoint, repoInfo.RemoteName, dgst, auth)
				if err != nil {
					out.Write(sf.FormatProgress(stringid.TruncateID(layer.ID), "Image push failed", nil))
					return err
				}
			}
			if !exists {
				if cs, err := s.pushV2Image(r, layer, endpoint, repoInfo.RemoteName, sf, out, auth); err != nil {
					return err
				} else if cs != checksum {
					// Cache new checksum
					if err := layer.SaveCheckSum(s.graph.ImageRoot(layer.ID), cs); err != nil {
						return err
					}
					checksum = cs
				}
			} else {
				out.Write(sf.FormatProgress(stringid.TruncateID(layer.ID), "Image already exists", nil))
			}
			m.FSLayers[i] = &registry.FSLayer{BlobSum: checksum}
			m.History[i] = &registry.ManifestHistory{V1Compatibility: string(jsonData)}
		}

		if err := validateManifest(m); err != nil {
			return fmt.Errorf("invalid manifest: %s", err)
		}

		glog.V(1).Infof("Pushing %s:%s to v2 repository", repoInfo.LocalName, tag)
		mBytes, err := json.MarshalIndent(m, "", "   ")
		if err != nil {
			return err
		}
		js, err := libtrust.NewJSONSignature(mBytes)
		if err != nil {
			return err
		}

		if err = js.Sign(s.trustKey); err != nil {
			return err
		}

		signedBody, err := js.PrettySignature("signatures")
		if err != nil {
			return err
		}
		glog.Infof("Signed manifest for %s:%s using daemon's key: %s", repoInfo.LocalName, tag, s.trustKey.KeyID())

		// push the manifest
		digest, err := r.PutV2ImageManifest(endpoint, repoInfo.RemoteName, tag, signedBody, mBytes, auth)
		if err != nil {
			return err
		}

		out.Write(sf.FormatStatus("", "Digest: %s", digest))
	}
	return nil
}