Пример #1
0
// Push initiates a push operation on the repository named localName.
func (s *TagStore) Push(localName string, imagePushConfig *ImagePushConfig) error {
	// FIXME: Allow to interrupt current push when new push of same image is done.

	var sf = streamformatter.NewJSONStreamFormatter()

	// Resolve the Repository name from fqn to RepositoryInfo
	repoInfo, err := s.registryService.ResolveRepository(localName)
	if err != nil {
		return err
	}

	endpoints, err := s.registryService.LookupPushEndpoints(repoInfo.CanonicalName)
	if err != nil {
		return err
	}

	reposLen := 1
	if imagePushConfig.Tag == "" {
		reposLen = len(s.Repositories[repoInfo.LocalName])
	}

	imagePushConfig.OutStream.Write(sf.FormatStatus("", "The push refers to a repository [%s] (len: %d)", repoInfo.CanonicalName, reposLen))

	// If it fails, try to get the repository
	localRepo, exists := s.Repositories[repoInfo.LocalName]
	if !exists {
		return fmt.Errorf("Repository does not exist: %s", repoInfo.LocalName)
	}

	var lastErr error
	for _, endpoint := range endpoints {
		logrus.Debugf("Trying to push %s to %s %s", repoInfo.CanonicalName, endpoint.URL, endpoint.Version)

		pusher, err := s.NewPusher(endpoint, localRepo, repoInfo, imagePushConfig, sf)
		if err != nil {
			lastErr = err
			continue
		}
		if fallback, err := pusher.Push(); err != nil {
			if fallback {
				lastErr = err
				continue
			}
			logrus.Debugf("Not continuing with error: %v", err)
			return err

		}

		s.eventsService.Log("push", repoInfo.LocalName, "")
		return nil
	}

	if lastErr == nil {
		lastErr = fmt.Errorf("no endpoints found for %s", repoInfo.CanonicalName)
	}
	return lastErr
}
Пример #2
0
// Pull initiates a pull operation. image is the repository name to pull, and
// tag may be either empty, or indicate a specific tag to pull.
func (s *TagStore) Pull(image string, tag string, imagePullConfig *ImagePullConfig) error {
	var sf = streamformatter.NewJSONStreamFormatter()

	// Resolve the Repository name from fqn to RepositoryInfo
	repoInfo, err := s.registryService.ResolveRepository(image)
	if err != nil {
		return err
	}

	// makes sure name is not empty or `scratch`
	if err := validateRepoName(repoInfo.LocalName); err != nil {
		return err
	}

	endpoints, err := s.registryService.LookupPullEndpoints(repoInfo.CanonicalName)
	if err != nil {
		return err
	}

	logName := repoInfo.LocalName
	if tag != "" {
		logName = utils.ImageReference(logName, tag)
	}

	var (
		lastErr error

		// discardNoSupportErrors is used to track whether an endpoint encountered an error of type registry.ErrNoSupport
		// By default it is false, which means that if a ErrNoSupport error is encountered, it will be saved in lastErr.
		// As soon as another kind of error is encountered, discardNoSupportErrors is set to true, avoiding the saving of
		// any subsequent ErrNoSupport errors in lastErr.
		// It's needed for pull-by-digest on v1 endpoints: if there are only v1 endpoints configured, the error should be
		// returned and displayed, but if there was a v2 endpoint which supports pull-by-digest, then the last relevant
		// error is the ones from v2 endpoints not v1.
		discardNoSupportErrors bool
	)
	for _, endpoint := range endpoints {
		logrus.Debugf("Trying to pull %s from %s %s", repoInfo.LocalName, endpoint.URL, endpoint.Version)

		puller, err := NewPuller(s, endpoint, repoInfo, imagePullConfig, sf)
		if err != nil {
			lastErr = err
			continue
		}
		if fallback, err := puller.Pull(tag); err != nil {
			if fallback {
				if _, ok := err.(registry.ErrNoSupport); !ok {
					// Because we found an error that's not ErrNoSupport, discard all subsequent ErrNoSupport errors.
					discardNoSupportErrors = true
					// save the current error
					lastErr = err
				} else if !discardNoSupportErrors {
					// Save the ErrNoSupport error, because it's either the first error or all encountered errors
					// were also ErrNoSupport errors.
					lastErr = err
				}
				continue
			}
			logrus.Debugf("Not continuing with error: %v", err)
			return err

		}

		s.eventsService.Log("pull", logName, "")
		return nil
	}

	if lastErr == nil {
		lastErr = fmt.Errorf("no endpoints found for %s", image)
	}
	return lastErr
}
Пример #3
0
// Import imports an image, getting the archived layer data either from
// inConfig (if src is "-"), or from a URI specified in src. Progress output is
// written to outStream. Repository and tag names can optionally be given in
// the repo and tag arguments, respectively.
func (s *TagStore) Import(src string, repo string, tag string, msg string, inConfig io.ReadCloser, outStream io.Writer, containerConfig *runconfig.Config) error {
	var (
		sf      = streamformatter.NewJSONStreamFormatter()
		archive io.ReadCloser
		resp    *http.Response
	)

	if src == "-" {
		archive = inConfig
	} else {
		inConfig.Close()
		u, err := url.Parse(src)
		if err != nil {
			return err
		}
		if u.Scheme == "" {
			u.Scheme = "http"
			u.Host = src
			u.Path = ""
		}
		outStream.Write(sf.FormatStatus("", "Downloading from %s", u))
		resp, err = httputils.Download(u.String())
		if err != nil {
			return err
		}
		progressReader := progressreader.New(progressreader.Config{
			In:        resp.Body,
			Out:       outStream,
			Formatter: sf,
			Size:      resp.ContentLength,
			NewLines:  true,
			ID:        "",
			Action:    "Importing",
		})
		archive = progressReader
	}

	defer archive.Close()
	if len(msg) == 0 {
		msg = "Imported from " + src
	}

	img, err := s.graph.Create(archive, "", "", msg, "", nil, containerConfig)
	if err != nil {
		return err
	}
	// Optionally register the image at REPO/TAG
	if repo != "" {
		if err := s.Tag(repo, tag, img.ID, true); err != nil {
			return err
		}
	}
	outStream.Write(sf.FormatStatus("", img.ID))
	logID := img.ID
	if tag != "" {
		logID = utils.ImageReference(logID, tag)
	}

	s.eventsService.Log("import", logID, "")
	return nil
}