func newManifestStoreTestEnv(t *testing.T, name, tag string) *manifestStoreTestEnv {
	nameRef, err := reference.ParseNamed(name)
	if err != nil {
		t.Fatalf("unable to parse reference: %s", err)
	}

	ctx := context.Background()
	truthRegistry, err := storage.NewRegistry(ctx, inmemory.New(), storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()))
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	truthRepo, err := truthRegistry.Repository(ctx, nameRef)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	tr, err := truthRepo.Manifests(ctx)
	if err != nil {
		t.Fatal(err.Error())
	}
	truthManifests := statsManifest{
		manifests: tr,
		stats:     make(map[string]int),
	}

	manifestDigest, err := populateRepo(t, ctx, truthRepo, name, tag)
	if err != nil {
		t.Fatalf(err.Error())
	}

	localRegistry, err := storage.NewRegistry(ctx, inmemory.New(), storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), storage.EnableRedirect, storage.DisableDigestResumption)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	localRepo, err := localRegistry.Repository(ctx, nameRef)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	lr, err := localRepo.Manifests(ctx)
	if err != nil {
		t.Fatal(err.Error())
	}

	localManifests := statsManifest{
		manifests: lr,
		stats:     make(map[string]int),
	}

	s := scheduler.New(ctx, inmemory.New(), "/scheduler-state.json")
	return &manifestStoreTestEnv{
		manifestDigest: manifestDigest,
		manifests: proxyManifestStore{
			ctx:             ctx,
			localManifests:  localManifests,
			remoteManifests: truthManifests,
			scheduler:       s,
			repositoryName:  nameRef,
			authChallenger:  &mockChallenger{},
		},
	}
}

// Populate remote store and record the digests
func makeTestEnv(t *testing.T, name string) *testEnv {
	ctx := context.Background()

	truthDir, err := ioutil.TempDir("", "truth")
	if err != nil {
		t.Fatalf("unable to create tempdir: %s", err)
	}

	cacheDir, err := ioutil.TempDir("", "cache")
	if err != nil {
		t.Fatalf("unable to create tempdir: %s", err)
	}

	// todo: create a tempfile area here
	localRegistry, err := storage.NewRegistry(ctx, filesystem.New(truthDir), storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), storage.EnableRedirect, storage.DisableDigestResumption)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	localRepo, err := localRegistry.Repository(ctx, name)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	truthRegistry, err := storage.NewRegistry(ctx, filesystem.New(cacheDir), storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()))
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	truthRepo, err := truthRegistry.Repository(ctx, name)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	truthBlobs := statsBlobStore{
		stats: make(map[string]int),
		blobs: truthRepo.Blobs(ctx),
	}

	localBlobs := statsBlobStore{
		stats: make(map[string]int),
		blobs: localRepo.Blobs(ctx),
	}

	s := scheduler.New(ctx, inmemory.New(), "/scheduler-state.json")

	proxyBlobStore := proxyBlobStore{
		remoteStore: truthBlobs,
		localStore:  localBlobs,
		scheduler:   s,
	}

	te := &testEnv{
		store: proxyBlobStore,
		ctx:   ctx,
	}
	return te
}

func TestListener(t *testing.T) {
	ctx := context.Background()
	registry, err := storage.NewRegistry(ctx, inmemory.New(), storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), storage.EnableDelete, storage.EnableRedirect)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	tl := &testListener{
		ops: make(map[string]int),
	}

	repoRef, _ := reference.ParseNamed("foo/bar")
	repository, err := registry.Repository(ctx, repoRef)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	repository = Listen(repository, tl)

	// Now take the registry through a number of operations
	checkExerciseRepository(t, repository)

	expectedOps := map[string]int{
		"manifest:push": 1,
		"manifest:pull": 1,
		// "manifest:delete": 0, // deletes not supported for now
		"layer:push": 2,
		"layer:pull": 2,
		// "layer:delete":    0, // deletes not supported for now
	}

	if !reflect.DeepEqual(tl.ops, expectedOps) {
		t.Fatalf("counts do not match:\n%v\n !=\n%v", tl.ops, expectedOps)
	}

}

func createRegistry(t *testing.T, driver driver.StorageDriver) distribution.Namespace {
	ctx := context.Background()
	registry, err := storage.NewRegistry(ctx, driver, storage.EnableDelete)
	if err != nil {
		t.Fatalf("Failed to construct namespace")
	}
	return registry
}

// Populate remote store and record the digests
func makeTestEnv(t *testing.T, name string) testEnv {
	ctx := context.Background()

	localRegistry, err := storage.NewRegistry(ctx, inmemory.New(), storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), storage.EnableRedirect, storage.DisableDigestResumption)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	localRepo, err := localRegistry.Repository(ctx, name)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	truthRegistry, err := storage.NewRegistry(ctx, inmemory.New(), storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()))
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	truthRepo, err := truthRegistry.Repository(ctx, name)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	truthBlobs := statsBlobStore{
		stats: make(map[string]int),
		blobs: truthRepo.Blobs(ctx),
	}

	localBlobs := statsBlobStore{
		stats: make(map[string]int),
		blobs: localRepo.Blobs(ctx),
	}

	s := scheduler.New(ctx, inmemory.New(), "/scheduler-state.json")

	proxyBlobStore := proxyBlobStore{
		remoteStore: truthBlobs,
		localStore:  localBlobs,
		scheduler:   s,
	}

	te := testEnv{
		store: proxyBlobStore,
		ctx:   ctx,
	}
	return te
}

func populateTestStorage(
	t *testing.T,
	driver driver.StorageDriver,
	setManagedByOpenShift bool,
	schemaVersion int,
	repoImages map[string]int,
	testImages map[string][]*imageapi.Image,
) (map[string][]*imageapi.Image, error) {
	ctx := context.Background()
	reg, err := storage.NewRegistry(ctx, driver)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}

	result := make(map[string][]*imageapi.Image)
	for key, value := range testImages {
		images := make([]*imageapi.Image, len(value))
		copy(images, value)
		result[key] = images
	}

	for imageReference := range repoImages {
		parsed, err := reference.Parse(imageReference)
		if err != nil {
			t.Fatalf("failed to parse reference %q: %v", imageReference, err)
		}
		namedTagged, ok := parsed.(reference.NamedTagged)
		if !ok {
			t.Fatalf("expected NamedTagged reference, not %T", parsed)
		}

		imageCount := repoImages[imageReference]

		for i := 0; i < imageCount; i++ {
			img, err := storeTestImage(ctx, reg, namedTagged, schemaVersion, setManagedByOpenShift)
			if err != nil {
				t.Fatal(err)
			}
			arr := result[imageReference]
			t.Logf("created image %[email protected]%s image with layers:", namedTagged.Name(), img.Name)
			for _, l := range img.DockerImageLayers {
				t.Logf("  %s of size %d", l.Name, l.LayerSize)
			}
			result[imageReference] = append(arr, img)
		}
	}

	return result, nil
}

func newTestRegistry(
	ctx context.Context,
	osClient client.Interface,
	storageDriver driver.StorageDriver,
	blobrepositorycachettl time.Duration,
	pullthrough bool,
	useBlobDescriptorCacheProvider bool,
) (*testRegistry, error) {
	if storageDriver == nil {
		storageDriver = inmemory.New()
	}
	dockerStorageDriver = storageDriver

	opts := []storage.RegistryOption{
		storage.BlobDescriptorServiceFactory(&blobDescriptorServiceFactory{}),
		storage.EnableDelete,
		storage.EnableRedirect,
	}
	if useBlobDescriptorCacheProvider {
		cacheProvider := cache.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider())
		opts = append(opts, storage.BlobDescriptorCacheProvider(cacheProvider))
	}

	reg, err := storage.NewRegistry(ctx, dockerStorageDriver, opts...)
	if err != nil {
		return nil, err
	}
	dockerRegistry = reg

	return &testRegistry{
		Namespace:              dockerRegistry,
		osClient:               osClient,
		blobrepositorycachettl: blobrepositorycachettl,
		pullthrough:            pullthrough,
	}, nil
}

func main() {
	var configPath, reposPath string
	flag.StringVar(&configPath, "config", "", "path to a config file")
	flag.StringVar(&reposPath, "repos", "", "file with a list of repos")
	flag.Parse()

	if configPath == "" {
		fmt.Fprintln(os.Stderr, "must supply a config file with -config")
		flag.Usage()
		return
	}

	// Parse config file
	configFile, err := os.Open(configPath)
	if err != nil {
		panic(fmt.Sprintf("error opening config file: %v", err))
	}
	defer configFile.Close()

	config, err := configuration.Parse(configFile)
	if err != nil {
		panic(fmt.Sprintf("error parsing config file: %v", err))
	}

	ctx := context.Background()

	driver, err := factory.Create(config.Storage.Type(), config.Storage.Parameters())
	if err != nil {
		panic(fmt.Sprintf("error creating storage driver: %v", err))
	}

	registry, _ := storage.NewRegistry(ctx, driver, storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()))

	var repos []string

	if reposPath != "" {
		reposFile, err := os.Open(reposPath)
		if err != nil {
			panic(fmt.Sprintf("could not open repos file: %v", err))
		}

		scanner := bufio.NewScanner(reposFile)
		for scanner.Scan() {
			repoName := scanner.Text()
			if len(repoName) > 0 {
				if repoName[0] == '+' {
					repoName = repoName[1:]
				}
				repos = append(repos, repoName)
			}
		}
	} else {
		repos = make([]string, maxRepos)

		n, err := registry.Repositories(ctx, repos, "")
		if err != nil && err != io.EOF {
			panic(fmt.Sprintf("unexpected error getting repo: %v", err))
		}
		if n == maxRepos {
			panic("too many repositories")
		}

		repos = repos[:n]
	}

	var wg sync.WaitGroup
	repoChan := make(chan string)

	for i := 0; i < 30; i++ {
		wg.Add(1)
		go func() {
			for repoName := range repoChan {
				if err := checkRepo(registry, repoName); err != nil {
					fmt.Fprintln(os.Stderr, err)
				}
			}
			wg.Done()
		}()
	}

	for _, repoName := range repos {
		repoChan <- repoName
	}

	close(repoChan)

	wg.Wait()
}

// TestAppDispatcher builds an application with a test dispatcher and ensures
// that requests are properly dispatched and the handlers are constructed.
// This only tests the dispatch mechanism. The underlying dispatchers must be
// tested individually.
func TestAppDispatcher(t *testing.T) {
	driver := inmemory.New()
	ctx := context.Background()
	registry, err := storage.NewRegistry(ctx, driver, storage.BlobDescriptorCacheProvider(memorycache.NewInMemoryBlobDescriptorCacheProvider()), storage.EnableDelete, storage.EnableRedirect)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	app := &App{
		Config:   &configuration.Configuration{},
		Context:  ctx,
		router:   v2.Router(),
		driver:   driver,
		registry: registry,
	}
	server := httptest.NewServer(app)
	router := v2.Router()

	serverURL, err := url.Parse(server.URL)
	if err != nil {
		t.Fatalf("error parsing server url: %v", err)
	}

	varCheckingDispatcher := func(expectedVars map[string]string) dispatchFunc {
		return func(ctx *Context, r *http.Request) http.Handler {
			// Always checks the same name context
			if ctx.Repository.Named().Name() != getName(ctx) {
				t.Fatalf("unexpected name: %q != %q", ctx.Repository.Named().Name(), "foo/bar")
			}

			// Check that we have all that is expected
			for expectedK, expectedV := range expectedVars {
				if ctx.Value(expectedK) != expectedV {
					t.Fatalf("unexpected %s in context vars: %q != %q", expectedK, ctx.Value(expectedK), expectedV)
				}
			}

			// Check that we only have variables that are expected
			for k, v := range ctx.Value("vars").(map[string]string) {
				_, ok := expectedVars[k]

				if !ok { // name is checked on context
					// We have an unexpected key, fail
					t.Fatalf("unexpected key %q in vars with value %q", k, v)
				}
			}

			return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
				w.WriteHeader(http.StatusOK)
			})
		}
	}

	// unflatten a list of variables, suitable for gorilla/mux, to a map[string]string
	unflatten := func(vars []string) map[string]string {
		m := make(map[string]string)
		for i := 0; i < len(vars)-1; i = i + 2 {
			m[vars[i]] = vars[i+1]
		}

		return m
	}

	for _, testcase := range []struct {
		endpoint string
		vars     []string
	}{
		{
			endpoint: v2.RouteNameManifest,
			vars: []string{
				"name", "foo/bar",
				"reference", "sometag",
			},
		},
		{
			endpoint: v2.RouteNameTags,
			vars: []string{
				"name", "foo/bar",
			},
		},
		{
			endpoint: v2.RouteNameBlobUpload,
			vars: []string{
				"name", "foo/bar",
			},
		},
		{
			endpoint: v2.RouteNameBlobUploadChunk,
			vars: []string{
				"name", "foo/bar",
				"uuid", "theuuid",
			},
		},
	} {
		app.register(testcase.endpoint, varCheckingDispatcher(unflatten(testcase.vars)))
		route := router.GetRoute(testcase.endpoint).Host(serverURL.Host)
		u, err := route.URL(testcase.vars...)
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	}

	// configure deletion
	if d, ok := configuration.Storage["delete"]; ok {
		e, ok := d["enabled"]
		if ok {
			if deleteEnabled, ok := e.(bool); ok && deleteEnabled {
				options = append(options, storage.EnableDelete)
			}
		}
	}

	// configure redirects
	var redirectDisabled bool
	if redirectConfig, ok := configuration.Storage["redirect"]; ok {
		v := redirectConfig["disable"]
		switch v := v.(type) {
		case bool:
			redirectDisabled = v
		default:
			panic(fmt.Sprintf("invalid type for redirect config: %#v", redirectConfig))
		}
	}
	if redirectDisabled {
		ctxu.GetLogger(app).Infof("backend redirection disabled")
	} else {
		options = append(options, storage.EnableRedirect)
	}

	// configure storage caches
	if cc, ok := configuration.Storage["cache"]; ok {
		v, ok := cc["blobdescriptor"]
		if !ok {
			// Backwards compatible: "layerinfo" == "blobdescriptor"
			v = cc["layerinfo"]
		}

		switch v {
		case "redis":
			if app.redis == nil {
				panic("redis configuration required to use for layerinfo cache")
			}
			cacheProvider := rediscache.NewRedisBlobDescriptorCacheProvider(app.redis)
			localOptions := append(options, storage.BlobDescriptorCacheProvider(cacheProvider))
			app.registry, err = storage.NewRegistry(app, app.driver, localOptions...)
			if err != nil {
				panic("could not create registry: " + err.Error())
			}
			ctxu.GetLogger(app).Infof("using redis blob descriptor cache")
		case "inmemory":
			cacheProvider := memorycache.NewInMemoryBlobDescriptorCacheProvider()
			localOptions := append(options, storage.BlobDescriptorCacheProvider(cacheProvider))
			app.registry, err = storage.NewRegistry(app, app.driver, localOptions...)
			if err != nil {
				panic("could not create registry: " + err.Error())
			}
			ctxu.GetLogger(app).Infof("using inmemory blob descriptor cache")
		default:
			if v != "" {
				ctxu.GetLogger(app).Warnf("unknown cache type %q, caching disabled", configuration.Storage["cache"])
			}
		}
	}

	if app.registry == nil {
		// configure the registry if no cache section is available.
		app.registry, err = storage.NewRegistry(app.Context, app.driver, options...)
		if err != nil {
			panic("could not create registry: " + err.Error())
		}
	}

	app.registry, err = applyRegistryMiddleware(app.Context, app.registry, configuration.Middleware["registry"])
	if err != nil {
		panic(err)
	}

	authType := configuration.Auth.Type()

	if authType != "" {
		accessController, err := auth.GetAccessController(configuration.Auth.Type(), configuration.Auth.Parameters())
		if err != nil {
			panic(fmt.Sprintf("unable to configure authorization (%s): %v", authType, err))
		}
		app.accessController = accessController
		ctxu.GetLogger(app).Debugf("configured %q access controller", authType)
	}

	// configure as a pull through cache
	if configuration.Proxy.RemoteURL != "" {
		app.registry, err = proxy.NewRegistryPullThroughCache(ctx, app.registry, app.driver, configuration.Proxy)
		if err != nil {
			panic(err.Error())
		}
		app.isCache = true
		ctxu.GetLogger(app).Info("Registry configured as a proxy cache to ", configuration.Proxy.RemoteURL)
	}

	return app
}

func cmdPush(c *cli.Context) {
	url := fmt.Sprintf("http://%s/deploy/upload", c.GlobalString("api-endpoint"))

	var payload struct {
		DeployKey string `json:"deploy_key"`
	}

	payload.DeployKey = c.String("deploy-key")

	var response struct {
		AccessKey string `json:"access_key_id"`
		SecretKey string `json:"secret_access_key"`
		Bucket    string `json:"bucket"`
		Region    string `json:"region"`
		Name      string `json:"name"`
	}

	_, err := napping.Post(url, &payload, &response, nil)
	if err != nil {
		log.Panic("mikro-cli: push: upload-request: ", err)
	}

	options := s3.DriverParameters{
		AccessKey: response.AccessKey,
		SecretKey: response.SecretKey,
		Bucket:    response.Bucket,
		Region:    aws.GetRegion(fmt.Sprint(response.Region)),
		ChunkSize: 5 << 21,
		Secure:    true,
	}

	ctx := context.Background()

	driver, err := s3.New(options)
	registry, err := storage.NewRegistry(ctx, driver)

	imageName := c.Args()[0]
	repo, tag := parsers.ParseRepositoryTag(imageName)

	fmt.Printf("repo: %s tag: %s\n", repo, tag)

	bundle, err := NewImageBundle(repo, tag)
	if err != nil {
		log.Panic("mikro-cli: push: cannot export image: ", err)
	}
	defer bundle.Close()

	privateKey, err := libtrust.GenerateECP256PrivateKey()

	dgst, err := pushImageToRegistry(ctx, response.Name,
		c.String("commit-sha"),
		repo, tag,
		bundle,
		privateKey,
		registry)
	fmt.Printf("Pushed image %s as %[email protected]%s\n", imageName, response.Name, dgst)

	// FIXME: we want to use the dgst here, but we can't since ECS doesn't
	// support it yet.
	registerCommit(c, c.String("deploy-key"), c.String("commit-sha"),
		fmt.Sprintf("private:%s:%s", response.Name,
			c.String("commit-sha")))
}

// Populate remote store and record the digests
func makeTestEnv(t *testing.T, name string) *testEnv {
	nameRef, err := reference.ParseNamed(name)
	if err != nil {
		t.Fatalf("unable to parse reference: %s", err)
	}

	ctx := context.Background()

	truthDir, err := ioutil.TempDir("", "truth")
	if err != nil {
		t.Fatalf("unable to create tempdir: %s", err)
	}

	cacheDir, err := ioutil.TempDir("", "cache")
	if err != nil {
		t.Fatalf("unable to create tempdir: %s", err)
	}

	localDriver, err := filesystem.FromParameters(map[string]interface{}{
		"rootdirectory": truthDir,
	})
	if err != nil {
		t.Fatalf("unable to create filesystem driver: %s", err)
	}

	// todo: create a tempfile area here
	localRegistry, err := storage.NewRegistry(ctx, localDriver, storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), storage.EnableRedirect, storage.DisableDigestResumption)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	localRepo, err := localRegistry.Repository(ctx, nameRef)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	cacheDriver, err := filesystem.FromParameters(map[string]interface{}{
		"rootdirectory": cacheDir,
	})
	if err != nil {
		t.Fatalf("unable to create filesystem driver: %s", err)
	}

	truthRegistry, err := storage.NewRegistry(ctx, cacheDriver, storage.BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()))
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	truthRepo, err := truthRegistry.Repository(ctx, nameRef)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	truthBlobs := statsBlobStore{
		stats: make(map[string]int),
		blobs: truthRepo.Blobs(ctx),
	}

	localBlobs := statsBlobStore{
		stats: make(map[string]int),
		blobs: localRepo.Blobs(ctx),
	}

	s := scheduler.New(ctx, inmemory.New(), "/scheduler-state.json")

	proxyBlobStore := proxyBlobStore{
		repositoryName: nameRef,
		remoteStore:    truthBlobs,
		localStore:     localBlobs,
		scheduler:      s,
		authChallenger: &mockChallenger{},
	}

	te := &testEnv{
		store: proxyBlobStore,
		ctx:   ctx,
	}
	return te
}

//.........这里部分代码省略.........
		e, ok := d["enabled"]
		if ok {
			if deleteEnabled, ok := e.(bool); ok && deleteEnabled {
				options = append(options, storage.EnableDelete)
			}
		}
	}

	// configure redirects
	var redirectDisabled bool
	if redirectConfig, ok := configuration.Storage["redirect"]; ok {
		v := redirectConfig["disable"]
		switch v := v.(type) {
		case bool:
			redirectDisabled = v
		default:
			panic(fmt.Sprintf("invalid type for redirect config: %#v", redirectConfig))
		}
	}
	if redirectDisabled {
		ctxu.GetLogger(app).Infof("backend redirection disabled")
	} else {
		options = append(options, storage.EnableRedirect)
	}
	fmt.Printf("Configuring caches\n")
	// configure storage caches
	if cc, ok := configuration.Storage["cache"]; ok {
		v, ok := cc["blobdescriptor"]
		if !ok {
			// Backwards compatible: "layerinfo" == "blobdescriptor"
			v = cc["layerinfo"]
		}

		switch v {
		case "redis":
			if app.redis == nil {
				panic("redis configuration required to use for layerinfo cache")
			}
			cacheProvider := rediscache.NewRedisBlobDescriptorCacheProvider(app.redis)
			localOptions := append(options, storage.BlobDescriptorCacheProvider(cacheProvider))
			app.registry, err = storage.NewRegistry(app, app.driver, localOptions...)
			if err != nil {
				panic("could not create registry: " + err.Error())
			}
			ctxu.GetLogger(app).Infof("using redis blob descriptor cache")
		case "inmemory":
			cacheProvider := memorycache.NewInMemoryBlobDescriptorCacheProvider()
			localOptions := append(options, storage.BlobDescriptorCacheProvider(cacheProvider))
			app.registry, err = storage.NewRegistry(app, app.driver, localOptions...)
			if err != nil {
				panic("could not create registry: " + err.Error())
			}
			ctxu.GetLogger(app).Infof("using inmemory blob descriptor cache")
		default:
			if v != "" {
				ctxu.GetLogger(app).Warnf("unknown cache type %q, caching disabled", configuration.Storage["cache"])
			}
		}
	}

	if app.registry == nil {
		// configure the registry if no cache section is available.
		app.registry, err = storage.NewRegistry(app.Context, app.driver, options...)
		if err != nil {
			panic("could not create registry: " + err.Error())
		}
	}

	fmt.Printf("Starting applyRegistryMiddleware\n")

	app.registry, err = applyRegistryMiddleware(app.Context, app.registry, configuration.Middleware["registry"])
	if err != nil {
		panic(err)
	}

	authType := configuration.Auth.Type()

	if authType != "" {
		accessController, err := auth.GetAccessController(configuration.Auth.Type(), configuration.Auth.Parameters())
		if err != nil {
			panic(fmt.Sprintf("unable to configure authorization (%s): %v", authType, err))
		}
		app.accessController = accessController
		ctxu.GetLogger(app).Debugf("configured %q access controller", authType)
	}

	// configure as a pull through cache
	if configuration.Proxy.RemoteURL != "" {
		app.registry, err = proxy.NewRegistryPullThroughCache(ctx, app.registry, app.driver, configuration.Proxy)
		if err != nil {
			panic(err.Error())
		}
		app.isCache = true
		ctxu.GetLogger(app).Info("Registry configured as a proxy cache to ", configuration.Proxy.RemoteURL)
	}

	fmt.Printf("Created app\n")

	return app
}

			fmt.Fprintf(os.Stderr, "failed to construct %s driver: %v", config.Storage.Type(), err)
			os.Exit(1)
		}

		ctx := context.Background()
		ctx, err = configureLogging(ctx, config)
		if err != nil {
			fmt.Fprintf(os.Stderr, "unable to configure logging with config: %s", err)
			os.Exit(1)
		}

		k, err := libtrust.GenerateECP256PrivateKey()
		if err != nil {
			fmt.Fprint(os.Stderr, err)
			os.Exit(1)
		}

		registry, err := storage.NewRegistry(ctx, driver, storage.Schema1SigningKey(k))
		if err != nil {
			fmt.Fprintf(os.Stderr, "failed to construct registry: %v", err)
			os.Exit(1)
		}

		err = storage.MarkAndSweep(ctx, driver, registry, dryRun)
		if err != nil {
			fmt.Fprintf(os.Stderr, "failed to garbage collect: %v", err)
			os.Exit(1)
		}
	},
}

			fmt.Fprintf(os.Stderr, "failed to construct %s driver: %v", config.Storage.Type(), err)
			os.Exit(1)
		}

		ctx := context.Background()
		ctx, err = configureLogging(ctx, config)
		if err != nil {
			fmt.Fprintf(os.Stderr, "unable to configure logging with config: %s", err)
			os.Exit(1)
		}

		k, err := libtrust.GenerateECP256PrivateKey()
		if err != nil {
			fmt.Fprint(os.Stderr, err)
			os.Exit(1)
		}

		registry, err := storage.NewRegistry(ctx, driver, storage.DisableSchema1Signatures, storage.Schema1SigningKey(k))
		if err != nil {
			fmt.Fprintf(os.Stderr, "failed to construct registry: %v", err)
			os.Exit(1)
		}

		err = storage.MarkAndSweep(ctx, driver, registry, dryRun)
		if err != nil {
			fmt.Fprintf(os.Stderr, "failed to garbage collect: %v", err)
			os.Exit(1)
		}
	},
}

func markAndSweep(storageDriver driver.StorageDriver) error {
	ctx := context.Background()

	// Construct a registry
	registry, err := storage.NewRegistry(ctx, storageDriver)
	if err != nil {
		return fmt.Errorf("failed to construct registry: %v", err)
	}

	repositoryEnumerator, ok := registry.(distribution.RepositoryEnumerator)
	if !ok {
		return fmt.Errorf("coercion error: unable to convert Namespace to RepositoryEnumerator")
	}

	// mark
	markSet := make(map[digest.Digest]struct{})
	err = repositoryEnumerator.Enumerate(ctx, func(repoName string) error {
		var err error
		named, err := reference.ParseNamed(repoName)
		if err != nil {
			return fmt.Errorf("failed to parse repo name %s: %v", repoName, err)
		}
		repository, err := registry.Repository(ctx, named)
		if err != nil {
			return fmt.Errorf("failed to construct repository: %v", err)
		}

		manifestService, err := repository.Manifests(ctx)
		if err != nil {
			return fmt.Errorf("failed to construct manifest service: %v", err)
		}

		manifestEnumerator, ok := manifestService.(distribution.ManifestEnumerator)
		if !ok {
			return fmt.Errorf("coercion error: unable to convert ManifestService into ManifestEnumerator")
		}

		err = manifestEnumerator.Enumerate(ctx, func(dgst digest.Digest) error {
			// Mark the manifest's blob
			markSet[dgst] = struct{}{}

			manifest, err := manifestService.Get(ctx, dgst)
			if err != nil {
				return fmt.Errorf("failed to retrieve manifest for digest %v: %v", dgst, err)
			}

			descriptors := manifest.References()
			for _, descriptor := range descriptors {
				markSet[descriptor.Digest] = struct{}{}
			}

			switch manifest.(type) {
			case *schema1.SignedManifest:
				signaturesGetter, ok := manifestService.(distribution.SignaturesGetter)
				if !ok {
					return fmt.Errorf("coercion error: unable to convert ManifestSErvice into SignaturesGetter")
				}
				signatures, err := signaturesGetter.GetSignatures(ctx, dgst)
				if err != nil {
					return fmt.Errorf("failed to get signatures for signed manifest: %v", err)
				}
				for _, signatureDigest := range signatures {
					markSet[signatureDigest] = struct{}{}
				}
				break
			case *schema2.DeserializedManifest:
				config := manifest.(*schema2.DeserializedManifest).Config
				markSet[config.Digest] = struct{}{}
				break
			}

			return nil
		})

		return err
	})

	if err != nil {
		return fmt.Errorf("failed to mark: %v\n", err)
	}

	// sweep
	blobService := registry.Blobs()
	deleteSet := make(map[digest.Digest]struct{})
	err = blobService.Enumerate(ctx, func(dgst digest.Digest) error {
		// check if digest is in markSet. If not, delete it!
		if _, ok := markSet[dgst]; !ok {
			deleteSet[dgst] = struct{}{}
		}
		return nil
	})

	// Construct vacuum
	vacuum := storage.NewVacuum(ctx, storageDriver)
	for dgst := range deleteSet {
		err = vacuum.RemoveBlob(string(dgst))
		if err != nil {
			return fmt.Errorf("failed to delete blob %s: %v\n", dgst, err)
		}
	}
//.........这里部分代码省略.........