Пример #1
0
// mountBlob attempts to mount a blob from another repository by its digest. If
// successful, the blob is linked into the blob store and 201 Created is
// returned with the canonical url of the blob.
func (buh *blobUploadHandler) createBlobMountOption(fromRepo, mountDigest string) (distribution.BlobCreateOption, error) {
	dgst, err := digest.ParseDigest(mountDigest)
	if err != nil {
		return nil, err
	}

	ref, err := reference.ParseNamed(fromRepo)
	if err != nil {
		return nil, err
	}

	canonical, err := reference.WithDigest(ref, dgst)
	if err != nil {
		return nil, err
	}

	return storage.WithMountFrom(canonical), nil
}
Пример #2
0
func TestBlobMount(t *testing.T) {
	dgst, content := newRandomBlob(1024)
	var m testutil.RequestResponseMap
	repo := "test.example.com/uploadrepo"
	sourceRepo := "test.example.com/sourcerepo"

	namedRef, err := reference.ParseNamed(sourceRepo)
	if err != nil {
		t.Fatal(err)
	}
	canonicalRef, err := reference.WithDigest(namedRef, dgst)
	if err != nil {
		t.Fatal(err)
	}

	m = append(m, testutil.RequestResponseMapping{
		Request: testutil.Request{
			Method:      "POST",
			Route:       "/v2/" + repo + "/blobs/uploads/",
			QueryParams: map[string][]string{"from": {sourceRepo}, "mount": {dgst.String()}},
		},
		Response: testutil.Response{
			StatusCode: http.StatusCreated,
			Headers: http.Header(map[string][]string{
				"Content-Length":        {"0"},
				"Location":              {"/v2/" + repo + "/blobs/" + dgst.String()},
				"Docker-Content-Digest": {dgst.String()},
			}),
		},
	})
	m = append(m, testutil.RequestResponseMapping{
		Request: testutil.Request{
			Method: "HEAD",
			Route:  "/v2/" + repo + "/blobs/" + dgst.String(),
		},
		Response: testutil.Response{
			StatusCode: http.StatusOK,
			Headers: http.Header(map[string][]string{
				"Content-Length": {fmt.Sprint(len(content))},
				"Last-Modified":  {time.Now().Add(-1 * time.Second).Format(time.ANSIC)},
			}),
		},
	})

	e, c := testServer(m)
	defer c()

	ctx := context.Background()
	r, err := NewRepository(ctx, repo, e, nil)
	if err != nil {
		t.Fatal(err)
	}

	l := r.Blobs(ctx)

	bw, err := l.Create(ctx, storage.WithMountFrom(canonicalRef))
	if bw != nil {
		t.Fatalf("Expected blob writer to be nil, was %v", bw)
	}

	if ebm, ok := err.(distribution.ErrBlobMounted); ok {
		if ebm.From.Digest() != dgst {
			t.Fatalf("Unexpected digest: %s, expected %s", ebm.From.Digest(), dgst)
		}
		if ebm.From.Name() != sourceRepo {
			t.Fatalf("Unexpected from: %s, expected %s", ebm.From.Name(), sourceRepo)
		}
	} else {
		t.Fatalf("Unexpected error: %v, expected an ErrBlobMounted", err)
	}
}