Golang Session.PushRegistryTag方法代碼示例

func (s *TagStore) pushImageToEndpoint(endpoint string, out io.Writer, remoteName string, imageIDs []string,
	tags map[string][]string, repo *registry.RepositoryData, sf *utils.StreamFormatter, r *registry.Session) error {
	workerCount := len(imageIDs)
	// start a maximum of 5 workers to check if images exist on the specified endpoint.
	if workerCount > 5 {
		workerCount = 5
	}
	var (
		wg           = &sync.WaitGroup{}
		imageData    = make(chan imagePushData, workerCount*2)
		imagesToPush = make(chan string, workerCount*2)
		pushes       = make(chan map[string]struct{}, 1)
	)
	for i := 0; i < workerCount; i++ {
		wg.Add(1)
		go lookupImageOnEndpoint(wg, r, out, sf, imageData, imagesToPush)
	}
	// start a go routine that consumes the images to push
	go func() {
		shouldPush := make(map[string]struct{})
		for id := range imagesToPush {
			shouldPush[id] = struct{}{}
		}
		pushes <- shouldPush
	}()
	for _, id := range imageIDs {
		imageData <- imagePushData{
			id:       id,
			endpoint: endpoint,
			tokens:   repo.Tokens,
		}
	}
	// close the channel to notify the workers that there will be no more images to check.
	close(imageData)
	wg.Wait()
	close(imagesToPush)
	// wait for all the images that require pushes to be collected into a consumable map.
	shouldPush := <-pushes
	// finish by pushing any images and tags to the endpoint.  The order that the images are pushed
	// is very important that is why we are still iterating over the ordered list of imageIDs.
	for _, id := range imageIDs {
		if _, push := shouldPush[id]; push {
			if _, err := s.pushImage(r, out, id, endpoint, repo.Tokens, sf); err != nil {
				// FIXME: Continue on error?
				return err
			}
		}
		for _, tag := range tags[id] {
			out.Write(sf.FormatStatus("", "Pushing tag for rev [%s] on {%s}", common.TruncateID(id), endpoint+"repositories/"+remoteName+"/tags/"+tag))
			if err := r.PushRegistryTag(remoteName, id, tag, endpoint, repo.Tokens); err != nil {
				return err
			}
		}
	}
	return nil
}

func (s *TagStore) pushRepository(r *registry.Session, out io.Writer, localName, remoteName string, localRepo map[string]string, tag string, sf *utils.StreamFormatter) error {
	out = utils.NewWriteFlusher(out)
	log.Debugf("Local repo: %s", localRepo)
	imgList, tagsByImage, err := s.getImageList(localRepo, tag)
	if err != nil {
		return err
	}

	out.Write(sf.FormatStatus("", "Sending image list"))

	var (
		repoData   *registry.RepositoryData
		imageIndex []*registry.ImgData
	)

	for _, imgId := range imgList {
		if tags, exists := tagsByImage[imgId]; exists {
			// If an image has tags you must add an entry in the image index
			// for each tag
			for _, tag := range tags {
				imageIndex = append(imageIndex, &registry.ImgData{
					ID:  imgId,
					Tag: tag,
				})
			}
		} else {
			// If the image does not have a tag it still needs to be sent to the
			// registry with an empty tag so that it is accociated with the repository
			imageIndex = append(imageIndex, &registry.ImgData{
				ID:  imgId,
				Tag: "",
			})

		}
	}

	log.Debugf("Preparing to push %s with the following images and tags", localRepo)
	for _, data := range imageIndex {
		log.Debugf("Pushing ID: %s with Tag: %s", data.ID, data.Tag)
	}

	// Register all the images in a repository with the registry
	// If an image is not in this list it will not be associated with the repository
	repoData, err = r.PushImageJSONIndex(remoteName, imageIndex, false, nil)
	if err != nil {
		return err
	}

	nTag := 1
	if tag == "" {
		nTag = len(localRepo)
	}
	for _, ep := range repoData.Endpoints {
		out.Write(sf.FormatStatus("", "Pushing repository %s (%d tags)", localName, nTag))

		for _, imgId := range imgList {
			if r.LookupRemoteImage(imgId, ep, repoData.Tokens) {
				out.Write(sf.FormatStatus("", "Image %s already pushed, skipping", utils.TruncateID(imgId)))
			} else {
				if _, err := s.pushImage(r, out, remoteName, imgId, ep, repoData.Tokens, sf); err != nil {
					// FIXME: Continue on error?
					return err
				}
			}

			for _, tag := range tagsByImage[imgId] {
				out.Write(sf.FormatStatus("", "Pushing tag for rev [%s] on {%s}", utils.TruncateID(imgId), ep+"repositories/"+remoteName+"/tags/"+tag))

				if err := r.PushRegistryTag(remoteName, imgId, tag, ep, repoData.Tokens); err != nil {
					return err
				}
			}
		}
	}

	if _, err := r.PushImageJSONIndex(remoteName, imageIndex, true, repoData.Endpoints); err != nil {
		return err
	}

	return nil
}