Golang registry.NewSession函数代码示例

//return a registrySession associated with the repository contained in imageName
func newRegistrySession(userName, password string) (*registrySession, error) {
	//IndexInfo
	indexInfo := &registry.IndexInfo{
		Name:     registry.INDEXNAME,
		Mirrors:  []string{},
		Secure:   true,
		Official: true,
	}

	endpoint, err := registry.NewEndpoint(indexInfo)
	if err != nil {
		return nil, err
	}
	fmt.Printf("Index endpoint: %s\n", endpoint)

	authConfig := &registry.AuthConfig{Username: userName, Password: password}

	var metaHeaders map[string][]string

	session, err := registry.NewSession(authConfig, registry.HTTPRequestFactory(metaHeaders), endpoint, true)
	if err != nil {
		return nil, fmt.Errorf("failed to create registry session: %v", err)
	}

	return &registrySession{*session, indexInfo}, nil
}

// FIXME: Allow to interrupt current push when new push of same image is done.
func (s *TagStore) CmdPush(job *engine.Job) engine.Status {
	if n := len(job.Args); n != 1 {
		return job.Errorf("Usage: %s IMAGE", job.Name)
	}
	var (
		localName   = job.Args[0]
		sf          = utils.NewStreamFormatter(job.GetenvBool("json"))
		authConfig  = &registry.AuthConfig{}
		metaHeaders map[string][]string
	)

	// Resolve the Repository name from fqn to RepositoryInfo
	repoInfo, err := registry.ResolveRepositoryInfo(job, localName)
	if err != nil {
		return job.Error(err)
	}

	tag := job.Getenv("tag")
	job.GetenvJson("authConfig", authConfig)
	job.GetenvJson("metaHeaders", &metaHeaders)

	if _, err := s.poolAdd("push", repoInfo.LocalName); err != nil {
		return job.Error(err)
	}
	defer s.poolRemove("push", repoInfo.LocalName)

	endpoint, err := repoInfo.GetEndpoint()
	if err != nil {
		return job.Error(err)
	}

	img, err := s.graph.Get(repoInfo.LocalName)
	r, err2 := registry.NewSession(authConfig, registry.HTTPRequestFactory(metaHeaders), endpoint, false)
	if err2 != nil {
		return job.Error(err2)
	}

	if err != nil {
		reposLen := 1
		if tag == "" {
			reposLen = len(s.Repositories[repoInfo.LocalName])
		}
		job.Stdout.Write(sf.FormatStatus("", "The push refers to a repository [%s] (len: %d)", repoInfo.CanonicalName, reposLen))
		// If it fails, try to get the repository
		if localRepo, exists := s.Repositories[repoInfo.LocalName]; exists {
			if err := s.pushRepository(r, job.Stdout, repoInfo, localRepo, tag, sf); err != nil {
				return job.Error(err)
			}
			return engine.StatusOK
		}
		return job.Error(err)
	}

	var token []string
	job.Stdout.Write(sf.FormatStatus("", "The push refers to an image: [%s]", repoInfo.CanonicalName))
	if _, err := s.pushImage(r, job.Stdout, img.ID, endpoint.String(), token, sf); err != nil {
		return job.Error(err)
	}
	return engine.StatusOK
}

func (p *v1Pusher) Push() (fallback bool, err error) {
	tlsConfig, err := p.registryService.TLSConfig(p.repoInfo.Index.Name)
	if err != nil {
		return false, err
	}
	// Adds Docker-specific headers as well as user-specified headers (metaHeaders)
	tr := transport.NewTransport(
		// TODO(tiborvass): was NoTimeout
		registry.NewTransport(tlsConfig),
		registry.DockerHeaders(p.config.MetaHeaders)...,
	)
	client := registry.HTTPClient(tr)
	v1Endpoint, err := p.endpoint.ToV1Endpoint(p.config.MetaHeaders)
	if err != nil {
		logrus.Debugf("Could not get v1 endpoint: %v", err)
		return true, err
	}
	p.session, err = registry.NewSession(client, p.config.AuthConfig, v1Endpoint)
	if err != nil {
		// TODO(dmcgowan): Check if should fallback
		return true, err
	}
	if err := p.pushRepository(p.config.Tag); err != nil {
		// TODO(dmcgowan): Check if should fallback
		return false, err
	}
	return false, nil
}

func (p *v1Puller) Pull(tag string) (fallback bool, err error) {
	if utils.DigestReference(tag) {
		// Allowing fallback, because HTTPS v1 is before HTTP v2
		return true, registry.ErrNoSupport{errors.New("Cannot pull by digest with v1 registry")}
	}

	tlsConfig, err := p.registryService.TLSConfig(p.repoInfo.Index.Name)
	if err != nil {
		return false, err
	}
	// Adds Docker-specific headers as well as user-specified headers (metaHeaders)
	tr := transport.NewTransport(
		// TODO(tiborvass): was ReceiveTimeout
		registry.NewTransport(tlsConfig),
		registry.DockerHeaders(p.config.MetaHeaders)...,
	)
	client := registry.HTTPClient(tr)
	v1Endpoint, err := p.endpoint.ToV1Endpoint(p.config.MetaHeaders)
	if err != nil {
		logrus.Debugf("Could not get v1 endpoint: %v", err)
		return true, err
	}
	p.session, err = registry.NewSession(client, p.config.AuthConfig, v1Endpoint)
	if err != nil {
		// TODO(dmcgowan): Check if should fallback
		logrus.Debugf("Fallback from error: %s", err)
		return true, err
	}
	if err := p.pullRepository(tag); err != nil {
		// TODO(dmcgowan): Check if should fallback
		return false, err
	}
	return false, nil
}

// FIXME: Allow to interrupt current push when new push of same image is done.
func (s *TagStore) Push(localName string, imagePushConfig *ImagePushConfig) error {
	var (
		sf = streamformatter.NewJSONStreamFormatter()
	)

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

	if _, err := s.poolAdd("push", repoInfo.LocalName); err != nil {
		return err
	}
	defer s.poolRemove("push", repoInfo.LocalName)

	endpoint, err := repoInfo.GetEndpoint()
	if err != nil {
		return err
	}

	r, err := registry.NewSession(imagePushConfig.AuthConfig, registry.HTTPRequestFactory(imagePushConfig.MetaHeaders), endpoint, false)
	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)
	}

	if repoInfo.Index.Official || endpoint.Version == registry.APIVersion2 {
		err := s.pushV2Repository(r, localRepo, imagePushConfig.OutStream, repoInfo, imagePushConfig.Tag, sf)
		if err == nil {
			s.eventsService.Log("push", repoInfo.LocalName, "")
			return nil
		}

		if err != ErrV2RegistryUnavailable {
			return fmt.Errorf("Error pushing to registry: %s", err)
		}
	}

	if err := s.pushRepository(r, imagePushConfig.OutStream, repoInfo, localRepo, imagePushConfig.Tag, sf); err != nil {
		return err
	}
	s.eventsService.Log("push", repoInfo.LocalName, "")
	return nil

}

func (s *TagStore) CmdPull(job *engine.Job) engine.Status {
	if n := len(job.Args); n != 1 && n != 2 {
		return job.Errorf("Usage: %s IMAGE [TAG]", job.Name)
	}
	var (
		localName   = job.Args[0]
		tag         string
		sf          = utils.NewStreamFormatter(job.GetenvBool("json"))
		authConfig  = &registry.AuthConfig{}
		metaHeaders map[string][]string
	)
	if len(job.Args) > 1 {
		tag = job.Args[1]
	}

	job.GetenvJson("authConfig", authConfig)
	job.GetenvJson("metaHeaders", &metaHeaders)

	c, err := s.poolAdd("pull", localName+":"+tag)
	if err != nil {
		if c != nil {
			// Another pull of the same repository is already taking place; just wait for it to finish
			job.Stdout.Write(sf.FormatStatus("", "Repository %s already being pulled by another client. Waiting.", localName))
			<-c
			return engine.StatusOK
		}
		return job.Error(err)
	}
	defer s.poolRemove("pull", localName+":"+tag)

	// Resolve the Repository name from fqn to endpoint + name
	hostname, remoteName, err := registry.ResolveRepositoryName(localName)
	if err != nil {
		return job.Error(err)
	}

	endpoint, err := registry.ExpandAndVerifyRegistryUrl(hostname)
	if err != nil {
		return job.Error(err)
	}

	r, err := registry.NewSession(authConfig, registry.HTTPRequestFactory(metaHeaders), endpoint, true)
	if err != nil {
		return job.Error(err)
	}

	if endpoint == registry.IndexServerAddress() {
		// If pull "index.docker.io/foo/bar", it's stored locally under "foo/bar"
		localName = remoteName
	}

	if err = s.pullRepository(r, job.Stdout, localName, remoteName, tag, sf, job.GetenvBool("parallel")); err != nil {
		return job.Error(err)
	}

	return engine.StatusOK
}

func (factory *dockerSessionFactory) MakeSession(reposName string, allowInsecure bool) (DockerSession, error) {
	repositoryInfo, err := registry.ParseRepositoryInfo(reposName)
	if err != nil {
		return nil, fmt.Errorf("Error resolving Docker repository name:\n" + err.Error())
	}

	if allowInsecure {
		repositoryInfo.Index.Secure = false
	}
	endpoint, err := registry.NewEndpoint(repositoryInfo.Index, nil, registry.APIVersionUnknown)
	if err != nil {
		return nil, fmt.Errorf("Error Connecting to Docker registry:\n" + err.Error())
	}
	authConfig := &cliconfig.AuthConfig{}
	session, error := registry.NewSession(http.DefaultClient, authConfig, endpoint)
	return session, error
}

func (s *TagStore) pullFromV2Mirror(mirrorEndpoint *registry.Endpoint, repoInfo *registry.RepositoryInfo,
	imagePullConfig *ImagePullConfig, tag string, sf *streamformatter.StreamFormatter, logName string) error {

	tr := transport.NewTransport(
		registry.NewTransport(registry.ReceiveTimeout, mirrorEndpoint.IsSecure),
		registry.DockerHeaders(imagePullConfig.MetaHeaders)...,
	)
	client := registry.HTTPClient(tr)
	mirrorSession, err := registry.NewSession(client, &cliconfig.AuthConfig{}, mirrorEndpoint)
	if err != nil {
		return err
	}
	logrus.Debugf("Pulling v2 repository with local name %q from %s", repoInfo.LocalName, mirrorEndpoint.URL)
	if err := s.pullV2Repository(mirrorSession, imagePullConfig.OutStream, repoInfo, tag, sf); err != nil {
		return err
	}
	s.eventsService.Log("pull", logName, "")
	return nil
}

func (p *v1Puller) Pull(ref reference.Named) (fallback bool, err error) {
	if _, isDigested := ref.(reference.Digested); isDigested {
		// Allowing fallback, because HTTPS v1 is before HTTP v2
		return true, registry.ErrNoSupport{errors.New("Cannot pull by digest with v1 registry")}
	}

	tlsConfig, err := p.config.RegistryService.TLSConfig(p.repoInfo.Index.Name)
	if err != nil {
		return false, err
	}
	// Adds Docker-specific headers as well as user-specified headers (metaHeaders)
	tr := transport.NewTransport(
		// TODO(tiborvass): was ReceiveTimeout
		registry.NewTransport(tlsConfig),
		registry.DockerHeaders(p.config.MetaHeaders)...,
	)
	client := registry.HTTPClient(tr)
	v1Endpoint, err := p.endpoint.ToV1Endpoint(p.config.MetaHeaders)
	if err != nil {
		logrus.Debugf("Could not get v1 endpoint: %v", err)
		return true, err
	}
	p.session, err = registry.NewSession(client, p.config.AuthConfig, v1Endpoint)
	if err != nil {
		// TODO(dmcgowan): Check if should fallback
		logrus.Debugf("Fallback from error: %s", err)
		return true, err
	}
	if err := p.pullRepository(ref); err != nil {
		// TODO(dmcgowan): Check if should fallback
		return false, err
	}
	out := p.config.OutStream
	out.Write(p.sf.FormatStatus("", "%s: this image was pulled from a legacy registry.  Important: This registry version will not be supported in future versions of docker.", p.repoInfo.CanonicalName.Name()))

	return false, nil
}

func (p *v1Puller) Pull(ctx context.Context, ref reference.Named) error {
	if _, isCanonical := ref.(reference.Canonical); isCanonical {
		// Allowing fallback, because HTTPS v1 is before HTTP v2
		return fallbackError{err: ErrNoSupport{Err: errors.New("Cannot pull by digest with v1 registry")}}
	}

	tlsConfig, err := p.config.RegistryService.TLSConfig(p.repoInfo.Index.Name)
	if err != nil {
		return err
	}
	// Adds Docker-specific headers as well as user-specified headers (metaHeaders)
	tr := transport.NewTransport(
		// TODO(tiborvass): was ReceiveTimeout
		registry.NewTransport(tlsConfig),
		registry.DockerHeaders(dockerversion.DockerUserAgent(), p.config.MetaHeaders)...,
	)
	client := registry.HTTPClient(tr)
	v1Endpoint, err := p.endpoint.ToV1Endpoint(dockerversion.DockerUserAgent(), p.config.MetaHeaders)
	if err != nil {
		logrus.Debugf("Could not get v1 endpoint: %v", err)
		return fallbackError{err: err}
	}
	p.session, err = registry.NewSession(client, p.config.AuthConfig, v1Endpoint)
	if err != nil {
		// TODO(dmcgowan): Check if should fallback
		logrus.Debugf("Fallback from error: %s", err)
		return fallbackError{err: err}
	}
	if err := p.pullRepository(ctx, ref); err != nil {
		// TODO(dmcgowan): Check if should fallback
		return err
	}
	progress.Message(p.config.ProgressOutput, "", p.repoInfo.FullName()+": this image was pulled from a legacy registry.  Important: This registry version will not be supported in future versions of docker.")

	return nil
}

func (mf *v1ManifestFetcher) Fetch(ctx context.Context, ref reference.Named) (*types.ImageInspect, error) {
	var (
		imgInspect *types.ImageInspect
	)
	if _, isCanonical := ref.(reference.Canonical); isCanonical {
		// Allowing fallback, because HTTPS v1 is before HTTP v2
		return nil, fallbackError{err: dockerdistribution.ErrNoSupport{errors.New("Cannot pull by digest with v1 registry")}}
	}
	tlsConfig, err := mf.service.TLSConfig(mf.repoInfo.Index.Name)
	if err != nil {
		return nil, err
	}
	// Adds Docker-specific headers as well as user-specified headers (metaHeaders)
	tr := transport.NewTransport(
		registry.NewTransport(tlsConfig),
		//registry.DockerHeaders(mf.config.MetaHeaders)...,
		registry.DockerHeaders(dockerversion.DockerUserAgent(), nil)...,
	)
	client := registry.HTTPClient(tr)
	//v1Endpoint, err := mf.endpoint.ToV1Endpoint(mf.config.MetaHeaders)
	v1Endpoint, err := mf.endpoint.ToV1Endpoint(dockerversion.DockerUserAgent(), nil)
	if err != nil {
		logrus.Debugf("Could not get v1 endpoint: %v", err)
		return nil, fallbackError{err: err}
	}
	mf.session, err = registry.NewSession(client, &mf.authConfig, v1Endpoint)
	if err != nil {
		logrus.Debugf("Fallback from error: %s", err)
		return nil, fallbackError{err: err}
	}
	imgInspect, err = mf.fetchWithSession(ctx, ref)
	if err != nil {
		return nil, err
	}
	return imgInspect, nil
}

func (s *TagStore) CmdPull(job *engine.Job) engine.Status {
	if n := len(job.Args); n != 1 && n != 2 {
		return job.Errorf("Usage: %s IMAGE [TAG]", job.Name)
	}

	var (
		localName   = job.Args[0]
		tag         string
		sf          = utils.NewStreamFormatter(job.GetenvBool("json"))
		authConfig  = &registry.AuthConfig{}
		metaHeaders map[string][]string
	)

	// Resolve the Repository name from fqn to RepositoryInfo
	repoInfo, err := registry.ResolveRepositoryInfo(job, localName)
	if err != nil {
		return job.Error(err)
	}

	if len(job.Args) > 1 {
		tag = job.Args[1]
	}

	job.GetenvJson("authConfig", authConfig)
	job.GetenvJson("metaHeaders", &metaHeaders)

	c, err := s.poolAdd("pull", repoInfo.LocalName+":"+tag)
	if err != nil {
		if c != nil {
			// Another pull of the same repository is already taking place; just wait for it to finish
			job.Stdout.Write(sf.FormatStatus("", "Repository %s already being pulled by another client. Waiting.", repoInfo.LocalName))
			<-c
			return engine.StatusOK
		}
		return job.Error(err)
	}
	defer s.poolRemove("pull", repoInfo.LocalName+":"+tag)

	log.Debugf("pulling image from host %q with remote name %q", repoInfo.Index.Name, repoInfo.RemoteName)
	endpoint, err := repoInfo.GetEndpoint()
	if err != nil {
		return job.Error(err)
	}

	r, err := registry.NewSession(authConfig, registry.HTTPRequestFactory(metaHeaders), endpoint, true)
	if err != nil {
		return job.Error(err)
	}

	logName := repoInfo.LocalName
	if tag != "" {
		logName += ":" + tag
	}

	if len(repoInfo.Index.Mirrors) == 0 && (repoInfo.Index.Official || endpoint.Version == registry.APIVersion2) {
		j := job.Eng.Job("trust_update_base")
		if err = j.Run(); err != nil {
			log.Errorf("error updating trust base graph: %s", err)
		}

		log.Debugf("pulling v2 repository with local name %q", repoInfo.LocalName)
		if err := s.pullV2Repository(job.Eng, r, job.Stdout, repoInfo, tag, sf, job.GetenvBool("parallel")); err == nil {
			if err = job.Eng.Job("log", "pull", logName, "").Run(); err != nil {
				log.Errorf("Error logging event 'pull' for %s: %s", logName, err)
			}
			return engine.StatusOK
		} else if err != registry.ErrDoesNotExist {
			log.Errorf("Error from V2 registry: %s", err)
		}

		log.Debug("image does not exist on v2 registry, falling back to v1")
	}

	log.Debugf("pulling v1 repository with local name %q", repoInfo.LocalName)
	if err = s.pullRepository(r, job.Stdout, repoInfo, tag, sf, job.GetenvBool("parallel")); err != nil {
		return job.Error(err)
	}

	if err = job.Eng.Job("log", "pull", logName, "").Run(); err != nil {
		log.Errorf("Error logging event 'pull' for %s: %s", logName, err)
	}

	return engine.StatusOK
}

			http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
				w.WriteHeader(404)
			}),
		)

		registryAddr = server.HTTPTestServer.Listener.Addr().String()
		endpoint, err := registry.NewEndpoint(&registry.IndexInfo{
			Name:   registryAddr,
			Secure: false,
		}, nil)
		Expect(err).ToNot(HaveOccurred())

		tr := transport.NewTransport(
			registry.NewTransport(registry.ReceiveTimeout, endpoint.IsSecure),
		)
		session, err := registry.NewSession(registry.HTTPClient(tr), &cliconfig.AuthConfig{}, endpoint)
		Expect(err).ToNot(HaveOccurred())

		fetchRequest = &FetchRequest{
			Session:    session,
			Endpoint:   endpoint,
			Logger:     logger,
			Path:       "some-repo",
			RemotePath: "some-repo",
			Tag:        "some-tag",
			MaxSize:    math.MaxInt64,
		}

		retainer = new(fake_retainer.FakeRetainer)
		fetcher = &RemoteV2Fetcher{
			Cake:      cake,

// FIXME: Allow to interrupt current push when new push of same image is done.
func (s *TagStore) CmdPush(job *engine.Job) engine.Status {
	if n := len(job.Args); n != 1 {
		return job.Errorf("Usage: %s IMAGE", job.Name)
	}
	var (
		localName   = job.Args[0]
		sf          = utils.NewStreamFormatter(job.GetenvBool("json"))
		authConfig  = &registry.AuthConfig{}
		metaHeaders map[string][]string
	)

	// Resolve the Repository name from fqn to RepositoryInfo
	repoInfo, err := registry.ResolveRepositoryInfo(job, localName)
	if err != nil {
		return job.Error(err)
	}

	tag := job.Getenv("tag")
	job.GetenvJson("authConfig", authConfig)
	job.GetenvJson("metaHeaders", &metaHeaders)

	if _, err := s.poolAdd("push", repoInfo.LocalName); err != nil {
		return job.Error(err)
	}
	defer s.poolRemove("push", repoInfo.LocalName)

	endpoint, err := repoInfo.GetEndpoint()
	if err != nil {
		return job.Error(err)
	}

	r, err := registry.NewSession(authConfig, registry.HTTPRequestFactory(metaHeaders), endpoint, false)
	if err != nil {
		return job.Error(err)
	}

	if endpoint.Version == registry.APIVersion2 {
		err := s.pushV2Repository(r, job.Eng, job.Stdout, repoInfo, tag, sf)
		if err == nil {
			return engine.StatusOK
		}

		if err != ErrV2RegistryUnavailable {
			return job.Errorf("Error pushing to registry: %s", err)
		}
	}

	reposLen := 1
	if tag == "" {
		reposLen = len(s.Repositories[repoInfo.LocalName])
	}
	job.Stdout.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 job.Errorf("Repository does not exist: %s", repoInfo.LocalName)
	}
	if err := s.pushRepository(r, job.Stdout, repoInfo, localRepo, tag, sf); err != nil {
		return job.Error(err)
	}
	return engine.StatusOK

}

func (s *TagStore) CmdPull(job *engine.Job) engine.Status {
	if n := len(job.Args); n != 1 && n != 2 {
		return job.Errorf("Usage: %s IMAGE [TAG]", job.Name)
	}

	var (
		localName   = job.Args[0]
		tag         string
		sf          = utils.NewStreamFormatter(job.GetenvBool("json"))
		authConfig  = &registry.AuthConfig{}
		metaHeaders map[string][]string
		mirrors     []string
	)

	if len(job.Args) > 1 {
		tag = job.Args[1]
	}

	job.GetenvJson("authConfig", authConfig)
	job.GetenvJson("metaHeaders", &metaHeaders)

	c, err := s.poolAdd("pull", localName+":"+tag)
	if err != nil {
		if c != nil {
			// Another pull of the same repository is already taking place; just wait for it to finish
			job.Stdout.Write(sf.FormatStatus("", "Repository %s already being pulled by another client. Waiting.", localName))
			<-c
			return engine.StatusOK
		}
		return job.Error(err)
	}
	defer s.poolRemove("pull", localName+":"+tag)

	// Resolve the Repository name from fqn to endpoint + name
	hostname, remoteName, err := registry.ResolveRepositoryName(localName)
	if err != nil {
		return job.Error(err)
	}

	endpoint, err := registry.NewEndpoint(hostname, s.insecureRegistries)
	if err != nil {
		return job.Error(err)
	}

	r, err := registry.NewSession(authConfig, registry.HTTPRequestFactory(metaHeaders), endpoint, true)
	if err != nil {
		return job.Error(err)
	}

	var isOfficial bool
	if endpoint.VersionString(1) == registry.IndexServerAddress() {
		// If pull "index.docker.io/foo/bar", it's stored locally under "foo/bar"
		localName = remoteName

		isOfficial = isOfficialName(remoteName)
		if isOfficial && strings.IndexRune(remoteName, '/') == -1 {
			remoteName = "library/" + remoteName
		}
	}
	// Use provided mirrors, if any
	mirrors = s.mirrors

	if len(mirrors) == 0 && (isOfficial || endpoint.Version == registry.APIVersion2) {
		j := job.Eng.Job("trust_update_base")
		if err = j.Run(); err != nil {
			return job.Errorf("error updating trust base graph: %s", err)
		}

		if err := s.pullV2Repository(job.Eng, r, job.Stdout, localName, remoteName, tag, sf, job.GetenvBool("parallel")); err == nil {
			return engine.StatusOK
		} else if err != registry.ErrDoesNotExist {
			log.Errorf("Error from V2 registry: %s", err)
		}
	}

	if err = s.pullRepository(r, job.Stdout, localName, remoteName, tag, sf, job.GetenvBool("parallel"), mirrors); err != nil {
		return job.Error(err)
	}

	return engine.StatusOK
}