Golang memory.NewInMemoryBlobDescriptorCacheProvider函数代码示例

func setupFS(t *testing.T) *setupEnv {
	d := inmemory.New()
	ctx := context.Background()
	registry, err := NewRegistry(ctx, d, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableRedirect)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}

	repos := []string{
		"foo/a",
		"foo/b",
		"bar/c",
		"bar/d",
		"foo/d/in",
	}

	for _, repo := range repos {
		makeRepo(t, ctx, repo, registry)
	}

	expected := []string{
		"bar/c",
		"bar/d",
		"foo/a",
		"foo/b",
		"foo/d/in",
	}

	return &setupEnv{
		ctx:      ctx,
		driver:   d,
		expected: expected,
		registry: registry,
	}
}

func TestManifestStorageDisabledSignatures(t *testing.T) {
	k, err := libtrust.GenerateECP256PrivateKey()
	if err != nil {
		t.Fatal(err)
	}
	testManifestStorage(t, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect, DisableSchema1Signatures, Schema1SigningKey(k))
}

// TestWriteSeek tests that the current file size can be
// obtained using Seek
func TestWriteSeek(t *testing.T) {
	ctx := context.Background()
	imageName, _ := reference.ParseNamed("foo/bar")
	driver := testdriver.New()
	registry, err := NewRegistry(ctx, driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	repository, err := registry.Repository(ctx, imageName)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	bs := repository.Blobs(ctx)

	blobUpload, err := bs.Create(ctx)

	if err != nil {
		t.Fatalf("unexpected error starting layer upload: %s", err)
	}
	contents := []byte{1, 2, 3}
	blobUpload.Write(contents)
	blobUpload.Close()
	offset := blobUpload.Size()
	if offset != int64(len(contents)) {
		t.Fatalf("unexpected value for blobUpload offset:  %v != %v", offset, len(contents))
	}

}

func TestListener(t *testing.T) {
	ctx := context.Background()
	registry := storage.NewRegistryWithDriver(ctx, inmemory.New(), memory.NewInMemoryBlobDescriptorCacheProvider(), true, true)
	tl := &testListener{
		ops: make(map[string]int),
	}

	repository, err := registry.Repository(ctx, "foo/bar")
	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": 2,
		// "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 newManifestStoreTestEnv(t *testing.T, name, tag string) *manifestStoreTestEnv {
	ctx := context.Background()
	truthRegistry := storage.NewRegistryWithDriver(ctx, inmemory.New(), memory.NewInMemoryBlobDescriptorCacheProvider(), false, false, false)
	truthRepo, err := truthRegistry.Repository(ctx, name)
	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 := storage.NewRegistryWithDriver(ctx, inmemory.New(), memory.NewInMemoryBlobDescriptorCacheProvider(), false, true, true)
	localRepo, err := localRegistry.Repository(ctx, name)
	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,
		},
	}
}

// TestLayerUploadZeroLength uploads zero-length
func TestLayerUploadZeroLength(t *testing.T) {
	ctx := context.Background()
	imageName := "foo/bar"
	driver := inmemory.New()
	registry := NewRegistryWithDriver(ctx, driver, memory.NewInMemoryBlobDescriptorCacheProvider(), true, true)
	repository, err := registry.Repository(ctx, imageName)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	bs := repository.Blobs(ctx)

	simpleUpload(t, bs, []byte{}, digest.DigestSha256EmptyTar)
}

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

	localRegistry := storage.NewRegistryWithDriver(ctx, inmemory.New(), memory.NewInMemoryBlobDescriptorCacheProvider(), false, true, true)
	localRepo, err := localRegistry.Repository(ctx, name)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	truthRegistry := storage.NewRegistryWithDriver(ctx, inmemory.New(), memory.NewInMemoryBlobDescriptorCacheProvider(), false, false, false)
	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 (r *repository) Blobs(ctx context.Context) distribution.BlobStore {
	statter := &blobStatter{
		name:   r.Name(),
		ub:     r.ub,
		client: r.client,
	}
	return &blobs{
		name:    r.Name(),
		ub:      r.ub,
		client:  r.client,
		statter: cache.NewCachedBlobStatter(memory.NewInMemoryBlobDescriptorCacheProvider(), statter),
	}
}

func setupBadWalkEnv(t *testing.T) *setupEnv {
	d := newBadListDriver()
	ctx := context.Background()
	registry, err := NewRegistry(ctx, d, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableRedirect)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}

	return &setupEnv{
		ctx:      ctx,
		driver:   d,
		registry: registry,
	}
}

// TestLayerUploadZeroLength uploads zero-length
func TestLayerUploadZeroLength(t *testing.T) {
	ctx := context.Background()
	imageName, _ := reference.ParseNamed("foo/bar")
	driver := inmemory.New()
	registry, err := NewRegistry(ctx, driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	repository, err := registry.Repository(ctx, imageName)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	bs := repository.Blobs(ctx)

	simpleUpload(t, bs, []byte{}, digest.DigestSha256EmptyTar)
}

func newManifestStoreTestEnv(t *testing.T, name, tag string) *manifestStoreTestEnv {
	ctx := context.Background()
	driver := inmemory.New()
	registry := NewRegistryWithDriver(ctx, driver, memory.NewInMemoryBlobDescriptorCacheProvider(), true)
	repo, err := registry.Repository(ctx, name)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	return &manifestStoreTestEnv{
		ctx:        ctx,
		driver:     driver,
		registry:   registry,
		repository: repo,
		name:       name,
		tag:        tag,
	}
}

// TestLayerUploadZeroLength uploads zero-length
func TestLayerUploadZeroLength(t *testing.T) {
	ctx := context.Background()
	imageName := "foo/bar"
	driver := inmemory.New()
	registry := NewRegistryWithDriver(ctx, driver, memory.NewInMemoryBlobDescriptorCacheProvider())
	repository, err := registry.Repository(ctx, imageName)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	bs := repository.Blobs(ctx)

	wr, err := bs.Create(ctx)
	if err != nil {
		t.Fatalf("unexpected error starting upload: %v", err)
	}

	nn, err := io.Copy(wr, bytes.NewReader([]byte{}))
	if err != nil {
		t.Fatalf("error copying into blob writer: %v", err)
	}

	if nn != 0 {
		t.Fatalf("unexpected number of bytes copied: %v > 0", nn)
	}

	dgst, err := digest.FromReader(bytes.NewReader([]byte{}))
	if err != nil {
		t.Fatalf("error getting zero digest: %v", err)
	}

	if dgst != digest.DigestSha256EmptyTar {
		// sanity check on zero digest
		t.Fatalf("digest not as expected: %v != %v", dgst, digest.DigestTarSumV1EmptyTar)
	}

	desc, err := wr.Commit(ctx, distribution.Descriptor{Digest: dgst})
	if err != nil {
		t.Fatalf("unexpected error committing write: %v", err)
	}

	if desc.Digest != dgst {
		t.Fatalf("unexpected digest: %v != %v", desc.Digest, dgst)
	}
}

func setupFS(t *testing.T) *setupEnv {
	d := inmemory.New()
	c := []byte("")
	ctx := context.Background()
	registry, err := NewRegistry(ctx, d, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableRedirect)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	rootpath, _ := pathFor(repositoriesRootPathSpec{})

	repos := []string{
		"/foo/a/_layers/1",
		"/foo/b/_layers/2",
		"/bar/c/_layers/3",
		"/bar/d/_layers/4",
		"/foo/d/in/_layers/5",
		"/an/invalid/repo",
		"/bar/d/_layers/ignored/dir/6",
	}

	for _, repo := range repos {
		if err := d.PutContent(ctx, rootpath+repo, c); err != nil {
			t.Fatalf("Unable to put to inmemory fs")
		}
	}

	expected := []string{
		"bar/c",
		"bar/d",
		"foo/a",
		"foo/b",
		"foo/d/in",
	}

	return &setupEnv{
		ctx:      ctx,
		driver:   d,
		expected: expected,
		registry: registry,
	}
}

// TestRemoveParentsOnDelete verifies that blob store deletes a directory
// together with blob's data or link when RemoveParentsOnDelete option is
// applied.
func TestRemoveBlobParentsOnDelete(t *testing.T) {
	ctx := context.Background()
	imageName := "foo/bar"
	driver := inmemory.New()
	registry, err := NewRegistry(ctx, driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect, RemoveParentsOnDelete)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}
	repository, err := registry.Repository(ctx, imageName)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}
	bs := repository.Blobs(ctx)

	checkBlobParentPath(t, ctx, driver, "", digest.DigestSha256EmptyTar, false)
	checkBlobParentPath(t, ctx, driver, imageName, digest.DigestSha256EmptyTar, false)

	simpleUpload(t, bs, []byte{}, digest.DigestSha256EmptyTar)

	checkBlobParentPath(t, ctx, driver, "", digest.DigestSha256EmptyTar, true)
	checkBlobParentPath(t, ctx, driver, imageName, digest.DigestSha256EmptyTar, true)

	// Delete a layer link
	err = bs.Delete(ctx, digest.DigestSha256EmptyTar)
	if err != nil {
		t.Fatalf("Unexpected error deleting blob: %v", err)
	}

	checkBlobParentPath(t, ctx, driver, "", digest.DigestSha256EmptyTar, true)
	checkBlobParentPath(t, ctx, driver, imageName, digest.DigestSha256EmptyTar, false)

	bd, err := RegistryBlobDeleter(registry)
	if err != nil {
		t.Fatalf("failed to obtain blob deleter: %v", err)
	}
	bd.Delete(ctx, digest.DigestSha256EmptyTar)

	checkBlobParentPath(t, ctx, driver, "", digest.DigestSha256EmptyTar, false)
	checkBlobParentPath(t, ctx, driver, imageName, digest.DigestSha256EmptyTar, false)
}

func newManifestStoreTestEnv(t *testing.T, name reference.Named, tag string) *manifestStoreTestEnv {
	ctx := context.Background()
	driver := inmemory.New()
	registry, err := NewRegistry(ctx, driver, BlobDescriptorCacheProvider(
		memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect)
	if err != nil {
		t.Fatalf("error creating registry: %v", err)
	}

	repo, err := registry.Repository(ctx, name)
	if err != nil {
		t.Fatalf("unexpected error getting repo: %v", err)
	}

	return &manifestStoreTestEnv{
		ctx:        ctx,
		driver:     driver,
		registry:   registry,
		repository: repo,
		name:       name,
		tag:        tag,
	}
}