Exemple #1
0
func simpleUpload(t *testing.T, bs distribution.BlobIngester, blob []byte, expectedDigest digest.Digest) {
	ctx := context.Background()
	wr, err := bs.Create(ctx)
	if err != nil {
		t.Fatalf("unexpected error starting upload: %v", err)
	}

	nn, err := io.Copy(wr, bytes.NewReader(blob))
	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(blob))
	if err != nil {
		t.Fatalf("error getting digest: %v", err)
	}

	if dgst != expectedDigest {
		// 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 TestSimpleRead(t *testing.T) {
	ctx := context.Background()
	content := make([]byte, 1<<20)
	n, err := rand.Read(content)
	if err != nil {
		t.Fatalf("unexpected error building random data: %v", err)
	}

	if n != len(content) {
		t.Fatalf("random read didn't fill buffer")
	}

	dgst, err := digest.FromReader(bytes.NewReader(content))
	if err != nil {
		t.Fatalf("unexpected error digesting random content: %v", err)
	}

	driver := inmemory.New()
	path := "/random"

	if err := driver.PutContent(ctx, path, content); err != nil {
		t.Fatalf("error putting patterned content: %v", err)
	}

	fr, err := newFileReader(ctx, driver, path, int64(len(content)))
	if err != nil {
		t.Fatalf("error allocating file reader: %v", err)
	}

	verifier, err := digest.NewDigestVerifier(dgst)
	if err != nil {
		t.Fatalf("error getting digest verifier: %s", err)
	}

	io.Copy(verifier, fr)

	if !verifier.Verified() {
		t.Fatalf("unable to verify read data")
	}
}
// TestSimpleWrite takes the fileWriter through common write operations
// ensuring data integrity.
func TestSimpleWrite(t *testing.T) {
	content := make([]byte, 1<<20)
	n, err := rand.Read(content)
	if err != nil {
		t.Fatalf("unexpected error building random data: %v", err)
	}

	if n != len(content) {
		t.Fatalf("random read did't fill buffer")
	}

	dgst, err := digest.FromReader(bytes.NewReader(content))
	if err != nil {
		t.Fatalf("unexpected error digesting random content: %v", err)
	}

	driver := inmemory.New()
	path := "/random"
	ctx := context.Background()

	fw, err := newFileWriter(ctx, driver, path)
	if err != nil {
		t.Fatalf("unexpected error creating fileWriter: %v", err)
	}
	defer fw.Close()

	n, err = fw.Write(content)
	if err != nil {
		t.Fatalf("unexpected error writing content: %v", err)
	}
	fw.Flush()

	if n != len(content) {
		t.Fatalf("unexpected write length: %d != %d", n, len(content))
	}

	fr, err := newFileReader(ctx, driver, path, int64(len(content)))
	if err != nil {
		t.Fatalf("unexpected error creating fileReader: %v", err)
	}
	defer fr.Close()

	verifier, err := digest.NewDigestVerifier(dgst)
	if err != nil {
		t.Fatalf("unexpected error getting digest verifier: %s", err)
	}

	io.Copy(verifier, fr)

	if !verifier.Verified() {
		t.Fatalf("unable to verify write data")
	}

	// Check the seek position is equal to the content length
	end, err := fw.Seek(0, os.SEEK_END)
	if err != nil {
		t.Fatalf("unexpected error seeking: %v", err)
	}

	if end != int64(len(content)) {
		t.Fatalf("write did not advance offset: %d != %d", end, len(content))
	}

	// Double the content
	doubled := append(content, content...)
	doubledgst, err := digest.FromReader(bytes.NewReader(doubled))
	if err != nil {
		t.Fatalf("unexpected error digesting doubled content: %v", err)
	}

	nn, err := fw.ReadFrom(bytes.NewReader(content))
	if err != nil {
		t.Fatalf("unexpected error doubling content: %v", err)
	}

	if nn != int64(len(content)) {
		t.Fatalf("writeat was short: %d != %d", n, len(content))
	}

	fr, err = newFileReader(ctx, driver, path, int64(len(doubled)))
	if err != nil {
		t.Fatalf("unexpected error creating fileReader: %v", err)
	}
	defer fr.Close()

	verifier, err = digest.NewDigestVerifier(doubledgst)
	if err != nil {
		t.Fatalf("unexpected error getting digest verifier: %s", err)
	}

	io.Copy(verifier, fr)

	if !verifier.Verified() {
		t.Fatalf("unable to verify write data")
	}

	// Check that Write updated the offset.
	end, err = fw.Seek(0, os.SEEK_END)
	if err != nil {
		t.Fatalf("unexpected error seeking: %v", err)
	}

	if end != int64(len(doubled)) {
		t.Fatalf("write did not advance offset: %d != %d", end, len(doubled))
	}

	// Now, we copy from one path to another, running the data through the
	// fileReader to fileWriter, rather than the driver.Move command to ensure
	// everything is working correctly.
	fr, err = newFileReader(ctx, driver, path, int64(len(doubled)))
	if err != nil {
		t.Fatalf("unexpected error creating fileReader: %v", err)
	}
	defer fr.Close()

	fw, err = newFileWriter(ctx, driver, "/copied")
	if err != nil {
		t.Fatalf("unexpected error creating fileWriter: %v", err)
	}
	defer fw.Close()

	nn, err = io.Copy(fw, fr)
	if err != nil {
		t.Fatalf("unexpected error copying data: %v", err)
	}

	if nn != int64(len(doubled)) {
		t.Fatalf("unexpected copy length: %d != %d", nn, len(doubled))
	}

	fr, err = newFileReader(ctx, driver, "/copied", int64(len(doubled)))
	if err != nil {
		t.Fatalf("unexpected error creating fileReader: %v", err)
	}
	defer fr.Close()

	verifier, err = digest.NewDigestVerifier(doubledgst)
	if err != nil {
		t.Fatalf("unexpected error getting digest verifier: %s", err)
	}

	io.Copy(verifier, fr)

	if !verifier.Verified() {
		t.Fatalf("unable to verify write data")
	}
}