Golang Session.PutV2ImageBlob方法代碼示例

// PushV2Image pushes the image content to the v2 registry, first buffering the contents to disk
func (s *TagStore) pushV2Image(r *registry.Session, img *image.Image, endpoint *registry.Endpoint, imageName, sumType, sumStr string, sf *utils.StreamFormatter, out io.Writer, auth *registry.RequestAuthorization) error {
	out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Buffering to Disk", nil))

	image, err := s.graph.Get(img.ID)
	if err != nil {
		return err
	}
	arch, err := image.TarLayer()
	if err != nil {
		return err
	}
	tf, err := s.graph.newTempFile()
	if err != nil {
		return err
	}
	defer func() {
		tf.Close()
		os.Remove(tf.Name())
	}()

	size, err := bufferToFile(tf, arch)
	if err != nil {
		return err
	}

	// Send the layer
	log.Debugf("rendered layer for %s of [%d] size", img.ID, size)

	if err := r.PutV2ImageBlob(endpoint, imageName, sumType, sumStr, utils.ProgressReader(tf, int(size), out, sf, false, utils.TruncateID(img.ID), "Pushing"), auth); err != nil {
		out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Image push failed", nil))
		return err
	}
	out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Image successfully pushed", nil))
	return nil
}

// PushV2Image pushes the image content to the v2 registry, first buffering the contents to disk
func (s *TagStore) pushV2Image(r *registry.Session, img *image.Image, endpoint *registry.Endpoint, imageName string, sf *utils.StreamFormatter, out io.Writer, auth *registry.RequestAuthorization) (string, error) {
	out.Write(sf.FormatProgress(common.TruncateID(img.ID), "Buffering to Disk", nil))

	image, err := s.graph.Get(img.ID)
	if err != nil {
		return "", err
	}
	arch, err := image.TarLayer()
	if err != nil {
		return "", err
	}
	defer arch.Close()

	tf, err := s.graph.newTempFile()
	if err != nil {
		return "", err
	}
	defer func() {
		tf.Close()
		os.Remove(tf.Name())
	}()

	h := sha256.New()
	size, err := bufferToFile(tf, io.TeeReader(arch, h))
	if err != nil {
		return "", err
	}
	dgst := digest.NewDigest("sha256", h)

	// Send the layer
	log.Debugf("rendered layer for %s of [%d] size", img.ID, size)

	if err := r.PutV2ImageBlob(endpoint, imageName, dgst.Algorithm(), dgst.Hex(),
		progressreader.New(progressreader.Config{
			In:        tf,
			Out:       out,
			Formatter: sf,
			Size:      int(size),
			NewLines:  false,
			ID:        common.TruncateID(img.ID),
			Action:    "Pushing",
		}), auth); err != nil {
		out.Write(sf.FormatProgress(common.TruncateID(img.ID), "Image push failed", nil))
		return "", err
	}
	out.Write(sf.FormatProgress(common.TruncateID(img.ID), "Image successfully pushed", nil))
	return dgst.String(), nil
}

func (s *TagStore) pushV2Repository(r *registry.Session, eng *engine.Engine, out io.Writer, repoInfo *registry.RepositoryInfo, manifestBytes, tag string, sf *utils.StreamFormatter) error {
	if repoInfo.Official {
		j := eng.Job("trust_update_base")
		if err := j.Run(); err != nil {
			log.Errorf("error updating trust base graph: %s", err)
		}
	}

	endpoint, err := r.V2RegistryEndpoint(repoInfo.Index)
	if err != nil {
		return fmt.Errorf("error getting registry endpoint: %s", err)
	}
	auth, err := r.GetV2Authorization(endpoint, repoInfo.RemoteName, false)
	if err != nil {
		return fmt.Errorf("error getting authorization: %s", err)
	}

	// if no manifest is given, generate and sign with the key associated with the local tag store
	if len(manifestBytes) == 0 {
		mBytes, err := s.newManifest(repoInfo.LocalName, repoInfo.RemoteName, tag)
		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
		}
		log.Infof("Signed manifest using daemon's key: %s", s.trustKey.KeyID())

		manifestBytes = string(signedBody)
	}

	manifest, verified, err := s.verifyManifest(eng, []byte(manifestBytes))
	if err != nil {
		return fmt.Errorf("error verifying manifest: %s", err)
	}

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

	if !verified {
		log.Debugf("Pushing unverified image")
	}

	for i := len(manifest.FSLayers) - 1; i >= 0; i-- {
		var (
			sumStr  = manifest.FSLayers[i].BlobSum
			imgJSON = []byte(manifest.History[i].V1Compatibility)
		)

		sumParts := strings.SplitN(sumStr, ":", 2)
		if len(sumParts) < 2 {
			return fmt.Errorf("Invalid checksum: %s", sumStr)
		}
		manifestSum := sumParts[1]

		img, err := image.NewImgJSON(imgJSON)
		if err != nil {
			return fmt.Errorf("Failed to parse json: %s", err)
		}

		img, err = s.graph.Get(img.ID)
		if err != nil {
			return err
		}

		arch, err := img.TarLayer()
		if err != nil {
			return fmt.Errorf("Could not get tar layer: %s", err)
		}

		// Call mount blob
		exists, err := r.HeadV2ImageBlob(endpoint, repoInfo.RemoteName, sumParts[0], manifestSum, auth)
		if err != nil {
			out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Image push failed", nil))
			return err
		}
		if !exists {
			err = r.PutV2ImageBlob(endpoint, repoInfo.RemoteName, sumParts[0], manifestSum, utils.ProgressReader(arch, int(img.Size), out, sf, false, utils.TruncateID(img.ID), "Pushing"), auth)
			if err != nil {
				out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Image push failed", nil))
				return err
			}
			out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Image successfully pushed", nil))
		} else {
			out.Write(sf.FormatProgress(utils.TruncateID(img.ID), "Image already exists", nil))
		}
	}

	// push the manifest
//.........這裏部分代碼省略.........