// NewRepositoryInfo validates and breaks down a repository name into a RepositoryInfo
func (config *ServiceConfig) NewRepositoryInfo(reposName reference.Named) (*RepositoryInfo, error) {
	if err := validateNoSchema(reposName.Name()); err != nil {
		return nil, err
	}

	repoInfo := &RepositoryInfo{}
	var (
		indexName string
		err       error
	)

	indexName, repoInfo.RemoteName, err = loadRepositoryName(reposName)
	if err != nil {
		return nil, err
	}

	repoInfo.Index, err = config.NewIndexInfo(indexName)
	if err != nil {
		return nil, err
	}

	if repoInfo.Index.Official {
		repoInfo.LocalName, err = normalizeLibraryRepoName(repoInfo.RemoteName)
		if err != nil {
			return nil, err
		}
		repoInfo.RemoteName = repoInfo.LocalName

		// If the normalized name does not contain a '/' (e.g. "foo")
		// then it is an official repo.
		if strings.IndexRune(repoInfo.RemoteName.Name(), '/') == -1 {
			repoInfo.Official = true
			// Fix up remote name for official repos.
			repoInfo.RemoteName, err = reference.WithName("library/" + repoInfo.RemoteName.Name())
			if err != nil {
				return nil, err
			}
		}

		repoInfo.CanonicalName, err = reference.WithName("docker.io/" + repoInfo.RemoteName.Name())
		if err != nil {
			return nil, err
		}
	} else {
		repoInfo.LocalName, err = localNameFromRemote(repoInfo.Index.Name, repoInfo.RemoteName)
		if err != nil {
			return nil, err
		}
		repoInfo.CanonicalName = repoInfo.LocalName
	}

	return repoInfo, nil
}

// normalizeLibraryRepoName removes the library prefix from
// the repository name for official repos.
func normalizeLibraryRepoName(name reference.Named) (reference.Named, error) {
	if strings.HasPrefix(name.Name(), "library/") {
		// If pull "library/foo", it's stored locally under "foo"
		return reference.WithName(strings.SplitN(name.Name(), "/", 2)[1])
	}
	return name, nil
}

func TestMirrorEndpointLookup(t *testing.T) {
	containsMirror := func(endpoints []APIEndpoint) bool {
		for _, pe := range endpoints {
			if pe.URL == "my.mirror" {
				return true
			}
		}
		return false
	}
	s := Service{Config: makeServiceConfig([]string{"my.mirror"}, nil)}

	imageName, err := reference.WithName(IndexName + "/test/image")
	if err != nil {
		t.Error(err)
	}
	pushAPIEndpoints, err := s.LookupPushEndpoints(imageName)
	if err != nil {
		t.Fatal(err)
	}
	if containsMirror(pushAPIEndpoints) {
		t.Fatal("Push endpoint should not contain mirror")
	}

	pullAPIEndpoints, err := s.LookupPullEndpoints(imageName)
	if err != nil {
		t.Fatal(err)
	}
	if !containsMirror(pullAPIEndpoints) {
		t.Fatal("Pull endpoint should contain mirror")
	}
}

func TestValidateRepositoryName(t *testing.T) {
	validRepoNames := []string{
		"docker/docker",
		"library/debian",
		"debian",
		"docker.io/docker/docker",
		"docker.io/library/debian",
		"docker.io/debian",
		"index.docker.io/docker/docker",
		"index.docker.io/library/debian",
		"index.docker.io/debian",
		"127.0.0.1:5000/docker/docker",
		"127.0.0.1:5000/library/debian",
		"127.0.0.1:5000/debian",
		"thisisthesongthatneverendsitgoesonandonandonthisisthesongthatnev",
	}
	invalidRepoNames := []string{
		"https://github.com/docker/docker",
		"docker/Docker",
		"-docker",
		"-docker/docker",
		"-docker.io/docker/docker",
		"docker///docker",
		"docker.io/docker/Docker",
		"docker.io/docker///docker",
		"1a3f5e7d9c1b3a5f7e9d1c3b5a7f9e1d3c5b7a9f1e3d5d7c9b1a3f5e7d9c1b3a",
		"docker.io/1a3f5e7d9c1b3a5f7e9d1c3b5a7f9e1d3c5b7a9f1e3d5d7c9b1a3f5e7d9c1b3a",
	}

	for _, name := range invalidRepoNames {
		named, err := reference.WithName(name)
		if err == nil {
			err := ValidateRepositoryName(named)
			assertNotEqual(t, err, nil, "Expected invalid repo name: "+name)
		}
	}

	for _, name := range validRepoNames {
		named, err := reference.WithName(name)
		if err != nil {
			t.Fatalf("could not parse valid name: %s", name)
		}
		err = ValidateRepositoryName(named)
		assertEqual(t, err, nil, "Expected valid repo name: "+name)
	}
}

func (l *tarexporter) legacyLoad(tmpDir string, outStream io.Writer) error {
	legacyLoadedMap := make(map[string]image.ID)

	dirs, err := ioutil.ReadDir(tmpDir)
	if err != nil {
		return err
	}

	// every dir represents an image
	for _, d := range dirs {
		if d.IsDir() {
			if err := l.legacyLoadImage(d.Name(), tmpDir, legacyLoadedMap); err != nil {
				return err
			}
		}
	}

	// load tags from repositories file
	repositoriesPath, err := safePath(tmpDir, legacyRepositoriesFileName)
	if err != nil {
		return err
	}
	repositoriesFile, err := os.Open(repositoriesPath)
	if err != nil {
		if !os.IsNotExist(err) {
			return err
		}
		return repositoriesFile.Close()
	}
	defer repositoriesFile.Close()

	repositories := make(map[string]map[string]string)
	if err := json.NewDecoder(repositoriesFile).Decode(&repositories); err != nil {
		return err
	}

	for name, tagMap := range repositories {
		for tag, oldID := range tagMap {
			imgID, ok := legacyLoadedMap[oldID]
			if !ok {
				return fmt.Errorf("invalid target ID: %v", oldID)
			}
			named, err := reference.WithName(name)
			if err != nil {
				return err
			}
			ref, err := reference.WithTag(named, tag)
			if err != nil {
				return err
			}
			l.setLoadedTag(ref, imgID, outStream)
		}
	}

	return nil
}

// WithName returns a named object representing the given string. If the input
// is invalid ErrReferenceInvalidFormat will be returned.
func WithName(name string) (Named, error) {
	name = normalize(name)
	if err := validateName(name); err != nil {
		return nil, err
	}
	r, err := distreference.WithName(name)
	if err != nil {
		return nil, err
	}
	return &namedRef{r}, nil
}

func validateRemoteName(remoteName string) error {

	if !strings.Contains(remoteName, "/") {

		// the repository name must not be a valid image ID
		if err := image.ValidateID(remoteName); err == nil {
			return fmt.Errorf("Invalid repository name (%s), cannot specify 64-byte hexadecimal strings", remoteName)
		}
	}

	_, err := reference.WithName(remoteName)
	return err
}

// splitReposName breaks a reposName into an index name and remote name
func splitReposName(reposName reference.Named) (indexName string, remoteName reference.Named, err error) {
	var remoteNameStr string
	indexName, remoteNameStr = reference.SplitHostname(reposName)
	if indexName == "" || (!strings.Contains(indexName, ".") &&
		!strings.Contains(indexName, ":") && indexName != "localhost") {
		// This is a Docker Index repos (ex: samalba/hipache or ubuntu)
		// 'docker.io'
		indexName = IndexName
		remoteName = reposName
	} else {
		remoteName, err = reference.WithName(remoteNameStr)
	}
	return
}

func (s *router) postImagesTag(ctx context.Context, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
	if err := httputils.ParseForm(r); err != nil {
		return err
	}
	repo := r.Form.Get("repo")
	tag := r.Form.Get("tag")
	newTag, err := reference.WithName(repo)
	if err != nil {
		return err
	}
	if tag != "" {
		if newTag, err = reference.WithTag(newTag, tag); err != nil {
			return err
		}
	}
	if err := s.daemon.TagImage(newTag, vars["name"]); err != nil {
		return err
	}
	w.WriteHeader(http.StatusCreated)
	return nil
}

func handlerPutTag(w http.ResponseWriter, r *http.Request) {
	if !requiresAuth(w, r) {
		return
	}
	vars := mux.Vars(r)
	repositoryName, err := reference.WithName(vars["repository"])
	if err != nil {
		apiError(w, "Could not parse repository", 400)
		return
	}
	repositoryName = NormalizeLocalName(repositoryName)
	tagName := vars["tag"]
	tags, exists := testRepositories[repositoryName.String()]
	if !exists {
		tags = make(map[string]string)
		testRepositories[repositoryName.String()] = tags
	}
	tagValue := ""
	readJSON(r, tagValue)
	tags[tagName] = tagValue
	writeResponse(w, true, 200)
}

func handlerGetDeleteTags(w http.ResponseWriter, r *http.Request) {
	if !requiresAuth(w, r) {
		return
	}
	repositoryName, err := reference.WithName(mux.Vars(r)["repository"])
	if err != nil {
		apiError(w, "Could not parse repository", 400)
		return
	}
	repositoryName = NormalizeLocalName(repositoryName)
	tags, exists := testRepositories[repositoryName.String()]
	if !exists {
		apiError(w, "Repository not found", 404)
		return
	}
	if r.Method == "DELETE" {
		delete(testRepositories, repositoryName.String())
		writeResponse(w, true, 200)
		return
	}
	writeResponse(w, tags, 200)
}

func handlerGetTag(w http.ResponseWriter, r *http.Request) {
	if !requiresAuth(w, r) {
		return
	}
	vars := mux.Vars(r)
	repositoryName, err := reference.WithName(vars["repository"])
	if err != nil {
		apiError(w, "Could not parse repository", 400)
		return
	}
	repositoryName = NormalizeLocalName(repositoryName)
	tagName := vars["tag"]
	tags, exists := testRepositories[repositoryName.String()]
	if !exists {
		apiError(w, "Repository not found", 404)
		return
	}
	tag, exists := tags[tagName]
	if !exists {
		apiError(w, "Tag not found", 404)
		return
	}
	writeResponse(w, tag, 200)
}

// Commit creates a new filesystem image from the current state of a container.
// The image can optionally be tagged into a repository.
func (daemon *Daemon) Commit(name string, c *ContainerCommitConfig) (string, error) {
	container, err := daemon.Get(name)
	if err != nil {
		return "", err
	}

	// It is not possible to commit a running container on Windows
	if runtime.GOOS == "windows" && container.IsRunning() {
		return "", fmt.Errorf("Windows does not support commit of a running container")
	}

	if c.Pause && !container.isPaused() {
		daemon.containerPause(container)
		defer daemon.containerUnpause(container)
	}

	if c.MergeConfigs {
		if err := runconfig.Merge(c.Config, container.Config); err != nil {
			return "", err
		}
	}

	rwTar, err := daemon.exportContainerRw(container)
	if err != nil {
		return "", err
	}
	defer func() {
		if rwTar != nil {
			rwTar.Close()
		}
	}()

	var history []image.History
	rootFS := image.NewRootFS()

	if container.ImageID != "" {
		img, err := daemon.imageStore.Get(container.ImageID)
		if err != nil {
			return "", err
		}
		history = img.History
		rootFS = img.RootFS
	}

	l, err := daemon.layerStore.Register(rwTar, rootFS.ChainID())
	if err != nil {
		return "", err
	}
	defer layer.ReleaseAndLog(daemon.layerStore, l)

	h := image.History{
		Author:     c.Author,
		Created:    time.Now().UTC(),
		CreatedBy:  strings.Join(container.Config.Cmd.Slice(), " "),
		Comment:    c.Comment,
		EmptyLayer: true,
	}

	if diffID := l.DiffID(); layer.DigestSHA256EmptyTar != diffID {
		h.EmptyLayer = false
		rootFS.Append(diffID)
	}

	history = append(history, h)

	config, err := json.Marshal(&image.Image{
		V1Image: image.V1Image{
			DockerVersion:   dockerversion.Version,
			Config:          c.Config,
			Architecture:    runtime.GOARCH,
			OS:              runtime.GOOS,
			Container:       container.ID,
			ContainerConfig: *container.Config,
			Author:          c.Author,
			Created:         h.Created,
		},
		RootFS:  rootFS,
		History: history,
	})

	if err != nil {
		return "", err
	}

	id, err := daemon.imageStore.Create(config)
	if err != nil {
		return "", err
	}

	if container.ImageID != "" {
		if err := daemon.imageStore.SetParent(id, container.ImageID); err != nil {
			return "", err
		}
	}

	if c.Repo != "" {
		newTag, err := reference.WithName(c.Repo) // todo: should move this to API layer
		if err != nil {
//.........这里部分代码省略.........

func (pd *v2PushDescriptor) Upload(ctx context.Context, progressOutput progress.Output) (distribution.Descriptor, error) {
	if fs, ok := pd.layer.(distribution.Describable); ok {
		if d := fs.Descriptor(); len(d.URLs) > 0 {
			progress.Update(progressOutput, pd.ID(), "Skipped foreign layer")
			return d, nil
		}
	}

	diffID := pd.DiffID()

	pd.pushState.Lock()
	if descriptor, ok := pd.pushState.remoteLayers[diffID]; ok {
		// it is already known that the push is not needed and
		// therefore doing a stat is unnecessary
		pd.pushState.Unlock()
		progress.Update(progressOutput, pd.ID(), "Layer already exists")
		return descriptor, nil
	}
	pd.pushState.Unlock()

	// Do we have any metadata associated with this layer's DiffID?
	v2Metadata, err := pd.v2MetadataService.GetMetadata(diffID)
	if err == nil {
		descriptor, exists, err := layerAlreadyExists(ctx, v2Metadata, pd.repoInfo, pd.repo, pd.pushState)
		if err != nil {
			progress.Update(progressOutput, pd.ID(), "Image push failed")
			return distribution.Descriptor{}, retryOnError(err)
		}
		if exists {
			progress.Update(progressOutput, pd.ID(), "Layer already exists")
			pd.pushState.Lock()
			pd.pushState.remoteLayers[diffID] = descriptor
			pd.pushState.Unlock()
			return descriptor, nil
		}
	}

	logrus.Debugf("Pushing layer: %s", diffID)

	// if digest was empty or not saved, or if blob does not exist on the remote repository,
	// then push the blob.
	bs := pd.repo.Blobs(ctx)

	var layerUpload distribution.BlobWriter
	mountAttemptsRemaining := 3

	// Attempt to find another repository in the same registry to mount the layer
	// from to avoid an unnecessary upload.
	// Note: metadata is stored from oldest to newest, so we iterate through this
	// slice in reverse to maximize our chances of the blob still existing in the
	// remote repository.
	for i := len(v2Metadata) - 1; i >= 0 && mountAttemptsRemaining > 0; i-- {
		mountFrom := v2Metadata[i]

		sourceRepo, err := reference.ParseNamed(mountFrom.SourceRepository)
		if err != nil {
			continue
		}
		if pd.repoInfo.Hostname() != sourceRepo.Hostname() {
			// don't mount blobs from another registry
			continue
		}

		namedRef, err := reference.WithName(mountFrom.SourceRepository)
		if err != nil {
			continue
		}

		// TODO (brianbland): We need to construct a reference where the Name is
		// only the full remote name, so clean this up when distribution has a
		// richer reference package
		remoteRef, err := distreference.WithName(namedRef.RemoteName())
		if err != nil {
			continue
		}

		canonicalRef, err := distreference.WithDigest(remoteRef, mountFrom.Digest)
		if err != nil {
			continue
		}

		logrus.Debugf("attempting to mount layer %s (%s) from %s", diffID, mountFrom.Digest, sourceRepo.FullName())

		layerUpload, err = bs.Create(ctx, client.WithMountFrom(canonicalRef))
		switch err := err.(type) {
		case distribution.ErrBlobMounted:
			progress.Updatef(progressOutput, pd.ID(), "Mounted from %s", err.From.Name())

			err.Descriptor.MediaType = schema2.MediaTypeLayer

			pd.pushState.Lock()
			pd.pushState.confirmedV2 = true
			pd.pushState.remoteLayers[diffID] = err.Descriptor
			pd.pushState.Unlock()

			// Cache mapping from this layer's DiffID to the blobsum
			if err := pd.v2MetadataService.Add(diffID, metadata.V2Metadata{Digest: mountFrom.Digest, SourceRepository: pd.repoInfo.FullName()}); err != nil {
				return distribution.Descriptor{}, xfer.DoNotRetry{Err: err}
			}
			return err.Descriptor, nil
//.........这里部分代码省略.........

// localNameFromRemote combines the index name and the repo remote name
// to generate a repo local name.
func localNameFromRemote(indexName string, remoteName reference.Named) (reference.Named, error) {
	return reference.WithName(indexName + "/" + remoteName.Name())
}

func (pd *v2PushDescriptor) Upload(ctx context.Context, progressOutput progress.Output) (distribution.Descriptor, error) {
	if fs, ok := pd.layer.(distribution.Describable); ok {
		if d := fs.Descriptor(); len(d.URLs) > 0 {
			progress.Update(progressOutput, pd.ID(), "Skipped foreign layer")
			return d, nil
		}
	}

	diffID := pd.DiffID()

	pd.pushState.Lock()
	if descriptor, ok := pd.pushState.remoteLayers[diffID]; ok {
		// it is already known that the push is not needed and
		// therefore doing a stat is unnecessary
		pd.pushState.Unlock()
		progress.Update(progressOutput, pd.ID(), "Layer already exists")
		return descriptor, nil
	}
	pd.pushState.Unlock()

	maxMountAttempts, maxExistenceChecks, checkOtherRepositories := getMaxMountAndExistenceCheckAttempts(pd.layer)

	// Do we have any metadata associated with this layer's DiffID?
	v2Metadata, err := pd.v2MetadataService.GetMetadata(diffID)
	if err == nil {
		// check for blob existence in the target repository if we have a mapping with it
		descriptor, exists, err := pd.layerAlreadyExists(ctx, progressOutput, diffID, false, 1, v2Metadata)
		if exists || err != nil {
			return descriptor, err
		}
	}

	// if digest was empty or not saved, or if blob does not exist on the remote repository,
	// then push the blob.
	bs := pd.repo.Blobs(ctx)

	var layerUpload distribution.BlobWriter

	// Attempt to find another repository in the same registry to mount the layer from to avoid an unnecessary upload
	candidates := getRepositoryMountCandidates(pd.repoInfo, pd.hmacKey, maxMountAttempts, v2Metadata)
	for _, mountCandidate := range candidates {
		logrus.Debugf("attempting to mount layer %s (%s) from %s", diffID, mountCandidate.Digest, mountCandidate.SourceRepository)
		createOpts := []distribution.BlobCreateOption{}

		if len(mountCandidate.SourceRepository) > 0 {
			namedRef, err := reference.WithName(mountCandidate.SourceRepository)
			if err != nil {
				logrus.Errorf("failed to parse source repository reference %v: %v", namedRef.String(), err)
				pd.v2MetadataService.Remove(mountCandidate)
				continue
			}

			// TODO (brianbland): We need to construct a reference where the Name is
			// only the full remote name, so clean this up when distribution has a
			// richer reference package
			remoteRef, err := distreference.WithName(namedRef.RemoteName())
			if err != nil {
				logrus.Errorf("failed to make remote reference out of %q: %v", namedRef.RemoteName(), namedRef.RemoteName())
				continue
			}

			canonicalRef, err := distreference.WithDigest(distreference.TrimNamed(remoteRef), mountCandidate.Digest)
			if err != nil {
				logrus.Errorf("failed to make canonical reference: %v", err)
				continue
			}

			createOpts = append(createOpts, client.WithMountFrom(canonicalRef))
		}

		// send the layer
		lu, err := bs.Create(ctx, createOpts...)
		switch err := err.(type) {
		case nil:
			// noop
		case distribution.ErrBlobMounted:
			progress.Updatef(progressOutput, pd.ID(), "Mounted from %s", err.From.Name())

			err.Descriptor.MediaType = schema2.MediaTypeLayer

			pd.pushState.Lock()
			pd.pushState.confirmedV2 = true
			pd.pushState.remoteLayers[diffID] = err.Descriptor
			pd.pushState.Unlock()

			// Cache mapping from this layer's DiffID to the blobsum
			if err := pd.v2MetadataService.TagAndAdd(diffID, pd.hmacKey, metadata.V2Metadata{
				Digest:           err.Descriptor.Digest,
				SourceRepository: pd.repoInfo.FullName(),
			}); err != nil {
				return distribution.Descriptor{}, xfer.DoNotRetry{Err: err}
			}
			return err.Descriptor, nil
		default:
			logrus.Infof("failed to mount layer %s (%s) from %s: %v", diffID, mountCandidate.Digest, mountCandidate.SourceRepository, err)
		}

		if len(mountCandidate.SourceRepository) > 0 &&
			(metadata.CheckV2MetadataHMAC(&mountCandidate, pd.hmacKey) ||
				len(mountCandidate.HMAC) == 0) {
//.........这里部分代码省略.........

func TestAddDeleteGet(t *testing.T) {
	jsonFile, err := ioutil.TempFile("", "tag-store-test")
	if err != nil {
		t.Fatalf("error creating temp file: %v", err)
	}
	_, err = jsonFile.Write([]byte(`{}`))
	jsonFile.Close()
	defer os.RemoveAll(jsonFile.Name())

	store, err := NewTagStore(jsonFile.Name())
	if err != nil {
		t.Fatalf("error creating tag store: %v", err)
	}

	testImageID1 := image.ID("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9c")
	testImageID2 := image.ID("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9d")
	testImageID3 := image.ID("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9e")

	// Try adding a reference with no tag or digest
	nameOnly, err := reference.WithName("username/repo")
	if err != nil {
		t.Fatalf("could not parse reference: %v", err)
	}
	if err = store.AddTag(nameOnly, testImageID1, false); err != nil {
		t.Fatalf("error adding to store: %v", err)
	}

	// Add a few references
	ref1, err := reference.ParseNamed("username/repo1:latest")
	if err != nil {
		t.Fatalf("could not parse reference: %v", err)
	}
	if err = store.AddTag(ref1, testImageID1, false); err != nil {
		t.Fatalf("error adding to store: %v", err)
	}

	ref2, err := reference.ParseNamed("username/repo1:old")
	if err != nil {
		t.Fatalf("could not parse reference: %v", err)
	}
	if err = store.AddTag(ref2, testImageID2, false); err != nil {
		t.Fatalf("error adding to store: %v", err)
	}

	ref3, err := reference.ParseNamed("username/repo1:alias")
	if err != nil {
		t.Fatalf("could not parse reference: %v", err)
	}
	if err = store.AddTag(ref3, testImageID1, false); err != nil {
		t.Fatalf("error adding to store: %v", err)
	}

	ref4, err := reference.ParseNamed("username/repo2:latest")
	if err != nil {
		t.Fatalf("could not parse reference: %v", err)
	}
	if err = store.AddTag(ref4, testImageID2, false); err != nil {
		t.Fatalf("error adding to store: %v", err)
	}

	ref5, err := reference.ParseNamed("username/[email protected]:58153dfb11794fad694460162bf0cb0a4fa710cfa3f60979c177d920813e267c")
	if err != nil {
		t.Fatalf("could not parse reference: %v", err)
	}
	if err = store.AddDigest(ref5.(reference.Canonical), testImageID2, false); err != nil {
		t.Fatalf("error adding to store: %v", err)
	}

	// Attempt to overwrite with force == false
	if err = store.AddTag(ref4, testImageID3, false); err == nil || !strings.HasPrefix(err.Error(), "Conflict:") {
		t.Fatalf("did not get expected error on overwrite attempt - got %v", err)
	}
	// Repeat to overwrite with force == true
	if err = store.AddTag(ref4, testImageID3, true); err != nil {
		t.Fatalf("failed to force tag overwrite: %v", err)
	}

	// Check references so far
	id, err := store.Get(nameOnly)
	if err != nil {
		t.Fatalf("Get returned error: %v", err)
	}
	if id != testImageID1 {
		t.Fatalf("id mismatch: got %s instead of %s", id.String(), testImageID1.String())
	}

	id, err = store.Get(ref1)
	if err != nil {
		t.Fatalf("Get returned error: %v", err)
	}
	if id != testImageID1 {
		t.Fatalf("id mismatch: got %s instead of %s", id.String(), testImageID1.String())
	}

	id, err = store.Get(ref2)
	if err != nil {
		t.Fatalf("Get returned error: %v", err)
	}
	if id != testImageID2 {
		t.Fatalf("id mismatch: got %s instead of %s", id.String(), testImageID2.String())
//.........这里部分代码省略.........

func (r *mockRepository) Named() reference.Named {
	named, _ := reference.WithName("test")
	return named
}

func main() {
	logger := lager.NewLogger("http")

	var request CheckRequest
	err := json.NewDecoder(os.Stdin).Decode(&request)
	fatalIf("failed to read request", err)

	os.Setenv("AWS_ACCESS_KEY_ID", request.Source.AWSAccessKeyID)
	os.Setenv("AWS_SECRET_ACCESS_KEY", request.Source.AWSSecretAccessKey)

	// silence benign ecr-login errors/warnings
	seelog.UseLogger(seelog.Disabled)

	ecrUser, ecrPass, err := ecr.ECRHelper{
		ClientFactory: ecrapi.DefaultClientFactory{},
	}.Get(request.Source.Repository)
	if err == nil {
		request.Source.Username = ecrUser
		request.Source.Password = ecrPass
	}

	registryHost, repo := parseRepository(request.Source.Repository)

	if len(request.Source.RegistryMirror) > 0 {
		registryMirrorUrl, err := url.Parse(request.Source.RegistryMirror)
		fatalIf("failed to parse registry mirror URL", err)
		registryHost = registryMirrorUrl.Host
	}

	tag := request.Source.Tag
	if tag == "" {
		tag = "latest"
	}

	transport, registryURL := makeTransport(logger, request, registryHost, repo)

	client := &http.Client{
		Transport: retryRoundTripper(logger, transport),
	}

	ub, err := v2.NewURLBuilderFromString(registryURL, false)
	fatalIf("failed to construct registry URL builder", err)

	namedRef, err := reference.WithName(repo)
	fatalIf("failed to construct named reference", err)

	var response CheckResponse

	taggedRef, err := reference.WithTag(namedRef, tag)
	fatalIf("failed to construct tagged reference", err)

	latestManifestURL, err := ub.BuildManifestURL(taggedRef)
	fatalIf("failed to build latest manifest URL", err)

	latestDigest, foundLatest := fetchDigest(client, latestManifestURL)

	if request.Version.Digest != "" {
		digestRef, err := reference.WithDigest(namedRef, digest.Digest(request.Version.Digest))
		fatalIf("failed to build cursor manifest URL", err)

		cursorManifestURL, err := ub.BuildManifestURL(digestRef)
		fatalIf("failed to build manifest URL", err)

		cursorDigest, foundCursor := fetchDigest(client, cursorManifestURL)

		if foundCursor && cursorDigest != latestDigest {
			response = append(response, Version{cursorDigest})
		}
	}

	if foundLatest {
		response = append(response, Version{latestDigest})
	}

	json.NewEncoder(os.Stdout).Encode(response)
}

func TestParseRepositoryInfo(t *testing.T) {
	withName := func(name string) reference.Named {
		named, err := reference.WithName(name)
		if err != nil {
			t.Fatalf("could not parse reference %s", name)
		}
		return named
	}

	expectedRepoInfos := map[string]RepositoryInfo{
		"fooo/bar": {
			Index: &registrytypes.IndexInfo{
				Name:     IndexName,
				Official: true,
			},
			RemoteName:    withName("fooo/bar"),
			LocalName:     withName("fooo/bar"),
			CanonicalName: withName("docker.io/fooo/bar"),
			Official:      false,
		},
		"library/ubuntu": {
			Index: &registrytypes.IndexInfo{
				Name:     IndexName,
				Official: true,
			},
			RemoteName:    withName("library/ubuntu"),
			LocalName:     withName("ubuntu"),
			CanonicalName: withName("docker.io/library/ubuntu"),
			Official:      true,
		},
		"nonlibrary/ubuntu": {
			Index: &registrytypes.IndexInfo{
				Name:     IndexName,
				Official: true,
			},
			RemoteName:    withName("nonlibrary/ubuntu"),
			LocalName:     withName("nonlibrary/ubuntu"),
			CanonicalName: withName("docker.io/nonlibrary/ubuntu"),
			Official:      false,
		},
		"ubuntu": {
			Index: &registrytypes.IndexInfo{
				Name:     IndexName,
				Official: true,
			},
			RemoteName:    withName("library/ubuntu"),
			LocalName:     withName("ubuntu"),
			CanonicalName: withName("docker.io/library/ubuntu"),
			Official:      true,
		},
		"other/library": {
			Index: &registrytypes.IndexInfo{
				Name:     IndexName,
				Official: true,
			},
			RemoteName:    withName("other/library"),
			LocalName:     withName("other/library"),
			CanonicalName: withName("docker.io/other/library"),
			Official:      false,
		},
		"127.0.0.1:8000/private/moonbase": {
			Index: &registrytypes.IndexInfo{
				Name:     "127.0.0.1:8000",
				Official: false,
			},
			RemoteName:    withName("private/moonbase"),
			LocalName:     withName("127.0.0.1:8000/private/moonbase"),
			CanonicalName: withName("127.0.0.1:8000/private/moonbase"),
			Official:      false,
		},
		"127.0.0.1:8000/privatebase": {
			Index: &registrytypes.IndexInfo{
				Name:     "127.0.0.1:8000",
				Official: false,
			},
			RemoteName:    withName("privatebase"),
			LocalName:     withName("127.0.0.1:8000/privatebase"),
			CanonicalName: withName("127.0.0.1:8000/privatebase"),
			Official:      false,
		},
		"localhost:8000/private/moonbase": {
			Index: &registrytypes.IndexInfo{
				Name:     "localhost:8000",
				Official: false,
			},
			RemoteName:    withName("private/moonbase"),
			LocalName:     withName("localhost:8000/private/moonbase"),
			CanonicalName: withName("localhost:8000/private/moonbase"),
			Official:      false,
		},
		"localhost:8000/privatebase": {
			Index: &registrytypes.IndexInfo{
				Name:     "localhost:8000",
				Official: false,
			},
			RemoteName:    withName("privatebase"),
			LocalName:     withName("localhost:8000/privatebase"),
			CanonicalName: withName("localhost:8000/privatebase"),
			Official:      false,
		},
//.........这里部分代码省略.........