4441333912
Most places in the registry were using string types to refer to repository names. This changes them to use reference.Named, so the type system can enforce validation of the naming rules. Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
568 lines
16 KiB
Go
568 lines
16 KiB
Go
package storage
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import (
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"bytes"
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"crypto/sha256"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"testing"
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"github.com/docker/distribution"
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"github.com/docker/distribution/context"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/reference"
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"github.com/docker/distribution/registry/storage/cache/memory"
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"github.com/docker/distribution/registry/storage/driver/inmemory"
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"github.com/docker/distribution/testutil"
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)
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// TestSimpleBlobUpload covers the blob upload process, exercising common
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// error paths that might be seen during an upload.
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func TestSimpleBlobUpload(t *testing.T) {
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randomDataReader, dgst, err := testutil.CreateRandomTarFile()
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if err != nil {
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t.Fatalf("error creating random reader: %v", err)
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}
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ctx := context.Background()
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imageName, _ := reference.ParseNamed("foo/bar")
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driver := inmemory.New()
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registry, err := NewRegistry(ctx, driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect)
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if err != nil {
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t.Fatalf("error creating registry: %v", err)
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}
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repository, err := registry.Repository(ctx, imageName)
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if err != nil {
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t.Fatalf("unexpected error getting repo: %v", err)
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}
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bs := repository.Blobs(ctx)
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h := sha256.New()
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rd := io.TeeReader(randomDataReader, h)
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blobUpload, err := bs.Create(ctx)
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if err != nil {
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t.Fatalf("unexpected error starting layer upload: %s", err)
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}
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// Cancel the upload then restart it
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if err := blobUpload.Cancel(ctx); err != nil {
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t.Fatalf("unexpected error during upload cancellation: %v", err)
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}
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// Do a resume, get unknown upload
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blobUpload, err = bs.Resume(ctx, blobUpload.ID())
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if err != distribution.ErrBlobUploadUnknown {
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t.Fatalf("unexpected error resuming upload, should be unknown: %v", err)
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}
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// Restart!
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blobUpload, err = bs.Create(ctx)
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if err != nil {
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t.Fatalf("unexpected error starting layer upload: %s", err)
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}
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// Get the size of our random tarfile
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randomDataSize, err := seekerSize(randomDataReader)
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if err != nil {
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t.Fatalf("error getting seeker size of random data: %v", err)
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}
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nn, err := io.Copy(blobUpload, rd)
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if err != nil {
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t.Fatalf("unexpected error uploading layer data: %v", err)
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}
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if nn != randomDataSize {
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t.Fatalf("layer data write incomplete")
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}
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offset, err := blobUpload.Seek(0, os.SEEK_CUR)
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if err != nil {
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t.Fatalf("unexpected error seeking layer upload: %v", err)
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}
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if offset != nn {
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t.Fatalf("blobUpload not updated with correct offset: %v != %v", offset, nn)
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}
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blobUpload.Close()
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// Do a resume, for good fun
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blobUpload, err = bs.Resume(ctx, blobUpload.ID())
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if err != nil {
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t.Fatalf("unexpected error resuming upload: %v", err)
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}
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sha256Digest := digest.NewDigest("sha256", h)
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desc, err := blobUpload.Commit(ctx, distribution.Descriptor{Digest: dgst})
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if err != nil {
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t.Fatalf("unexpected error finishing layer upload: %v", err)
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}
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// After finishing an upload, it should no longer exist.
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if _, err := bs.Resume(ctx, blobUpload.ID()); err != distribution.ErrBlobUploadUnknown {
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t.Fatalf("expected layer upload to be unknown, got %v", err)
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}
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// Test for existence.
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statDesc, err := bs.Stat(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("unexpected error checking for existence: %v, %#v", err, bs)
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}
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if statDesc != desc {
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t.Fatalf("descriptors not equal: %v != %v", statDesc, desc)
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}
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rc, err := bs.Open(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("unexpected error opening blob for read: %v", err)
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}
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defer rc.Close()
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h.Reset()
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nn, err = io.Copy(h, rc)
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if err != nil {
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t.Fatalf("error reading layer: %v", err)
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}
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if nn != randomDataSize {
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t.Fatalf("incorrect read length")
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}
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if digest.NewDigest("sha256", h) != sha256Digest {
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t.Fatalf("unexpected digest from uploaded layer: %q != %q", digest.NewDigest("sha256", h), sha256Digest)
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}
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// Delete a blob
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err = bs.Delete(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("Unexpected error deleting blob")
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}
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d, err := bs.Stat(ctx, desc.Digest)
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if err == nil {
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t.Fatalf("unexpected non-error stating deleted blob: %v", d)
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}
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switch err {
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case distribution.ErrBlobUnknown:
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break
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default:
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t.Errorf("Unexpected error type stat-ing deleted manifest: %#v", err)
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}
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_, err = bs.Open(ctx, desc.Digest)
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if err == nil {
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t.Fatalf("unexpected success opening deleted blob for read")
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}
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switch err {
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case distribution.ErrBlobUnknown:
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break
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default:
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t.Errorf("Unexpected error type getting deleted manifest: %#v", err)
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}
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// Re-upload the blob
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randomBlob, err := ioutil.ReadAll(randomDataReader)
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if err != nil {
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t.Fatalf("Error reading all of blob %s", err.Error())
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}
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expectedDigest := digest.FromBytes(randomBlob)
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simpleUpload(t, bs, randomBlob, expectedDigest)
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d, err = bs.Stat(ctx, expectedDigest)
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if err != nil {
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t.Errorf("unexpected error stat-ing blob")
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}
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if d.Digest != expectedDigest {
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t.Errorf("Mismatching digest with restored blob")
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}
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_, err = bs.Open(ctx, expectedDigest)
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if err != nil {
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t.Errorf("Unexpected error opening blob")
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}
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// Reuse state to test delete with a delete-disabled registry
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registry, err = NewRegistry(ctx, driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableRedirect)
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if err != nil {
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t.Fatalf("error creating registry: %v", err)
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}
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repository, err = registry.Repository(ctx, imageName)
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if err != nil {
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t.Fatalf("unexpected error getting repo: %v", err)
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}
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bs = repository.Blobs(ctx)
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err = bs.Delete(ctx, desc.Digest)
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if err == nil {
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t.Errorf("Unexpected success deleting while disabled")
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}
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}
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// TestSimpleBlobRead just creates a simple blob file and ensures that basic
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// open, read, seek, read works. More specific edge cases should be covered in
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// other tests.
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func TestSimpleBlobRead(t *testing.T) {
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ctx := context.Background()
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imageName, _ := reference.ParseNamed("foo/bar")
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driver := inmemory.New()
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registry, err := NewRegistry(ctx, driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect)
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if err != nil {
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t.Fatalf("error creating registry: %v", err)
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}
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repository, err := registry.Repository(ctx, imageName)
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if err != nil {
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t.Fatalf("unexpected error getting repo: %v", err)
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}
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bs := repository.Blobs(ctx)
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randomLayerReader, dgst, err := testutil.CreateRandomTarFile() // TODO(stevvooe): Consider using just a random string.
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if err != nil {
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t.Fatalf("error creating random data: %v", err)
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}
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// Test for existence.
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desc, err := bs.Stat(ctx, dgst)
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if err != distribution.ErrBlobUnknown {
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t.Fatalf("expected not found error when testing for existence: %v", err)
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}
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rc, err := bs.Open(ctx, dgst)
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if err != distribution.ErrBlobUnknown {
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t.Fatalf("expected not found error when opening non-existent blob: %v", err)
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}
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randomLayerSize, err := seekerSize(randomLayerReader)
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if err != nil {
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t.Fatalf("error getting seeker size for random layer: %v", err)
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}
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descBefore := distribution.Descriptor{Digest: dgst, MediaType: "application/octet-stream", Size: randomLayerSize}
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t.Logf("desc: %v", descBefore)
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desc, err = addBlob(ctx, bs, descBefore, randomLayerReader)
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if err != nil {
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t.Fatalf("error adding blob to blobservice: %v", err)
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}
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if desc.Size != randomLayerSize {
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t.Fatalf("committed blob has incorrect length: %v != %v", desc.Size, randomLayerSize)
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}
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rc, err = bs.Open(ctx, desc.Digest) // note that we are opening with original digest.
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if err != nil {
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t.Fatalf("error opening blob with %v: %v", dgst, err)
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}
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defer rc.Close()
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// Now check the sha digest and ensure its the same
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h := sha256.New()
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nn, err := io.Copy(h, rc)
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if err != nil {
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t.Fatalf("unexpected error copying to hash: %v", err)
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}
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if nn != randomLayerSize {
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t.Fatalf("stored incorrect number of bytes in blob: %d != %d", nn, randomLayerSize)
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}
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sha256Digest := digest.NewDigest("sha256", h)
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if sha256Digest != desc.Digest {
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t.Fatalf("fetched digest does not match: %q != %q", sha256Digest, desc.Digest)
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}
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// Now seek back the blob, read the whole thing and check against randomLayerData
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offset, err := rc.Seek(0, os.SEEK_SET)
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if err != nil {
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t.Fatalf("error seeking blob: %v", err)
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}
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if offset != 0 {
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t.Fatalf("seek failed: expected 0 offset, got %d", offset)
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}
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p, err := ioutil.ReadAll(rc)
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if err != nil {
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t.Fatalf("error reading all of blob: %v", err)
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}
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if len(p) != int(randomLayerSize) {
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t.Fatalf("blob data read has different length: %v != %v", len(p), randomLayerSize)
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}
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// Reset the randomLayerReader and read back the buffer
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_, err = randomLayerReader.Seek(0, os.SEEK_SET)
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if err != nil {
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t.Fatalf("error resetting layer reader: %v", err)
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}
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randomLayerData, err := ioutil.ReadAll(randomLayerReader)
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if err != nil {
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t.Fatalf("random layer read failed: %v", err)
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}
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if !bytes.Equal(p, randomLayerData) {
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t.Fatalf("layer data not equal")
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}
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}
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// TestBlobMount covers the blob mount process, exercising common
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// error paths that might be seen during a mount.
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func TestBlobMount(t *testing.T) {
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randomDataReader, dgst, err := testutil.CreateRandomTarFile()
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if err != nil {
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t.Fatalf("error creating random reader: %v", err)
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}
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ctx := context.Background()
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imageName, _ := reference.ParseNamed("foo/bar")
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sourceImageName, _ := reference.ParseNamed("foo/source")
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driver := inmemory.New()
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registry, err := NewRegistry(ctx, driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect)
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if err != nil {
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t.Fatalf("error creating registry: %v", err)
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}
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repository, err := registry.Repository(ctx, imageName)
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if err != nil {
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t.Fatalf("unexpected error getting repo: %v", err)
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}
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sourceRepository, err := registry.Repository(ctx, sourceImageName)
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if err != nil {
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t.Fatalf("unexpected error getting repo: %v", err)
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}
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sbs := sourceRepository.Blobs(ctx)
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blobUpload, err := sbs.Create(ctx)
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if err != nil {
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t.Fatalf("unexpected error starting layer upload: %s", err)
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}
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// Get the size of our random tarfile
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randomDataSize, err := seekerSize(randomDataReader)
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if err != nil {
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t.Fatalf("error getting seeker size of random data: %v", err)
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}
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nn, err := io.Copy(blobUpload, randomDataReader)
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if err != nil {
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t.Fatalf("unexpected error uploading layer data: %v", err)
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}
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desc, err := blobUpload.Commit(ctx, distribution.Descriptor{Digest: dgst})
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if err != nil {
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t.Fatalf("unexpected error finishing layer upload: %v", err)
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}
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// Test for existence.
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statDesc, err := sbs.Stat(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("unexpected error checking for existence: %v, %#v", err, sbs)
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}
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if statDesc != desc {
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t.Fatalf("descriptors not equal: %v != %v", statDesc, desc)
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}
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bs := repository.Blobs(ctx)
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// Test destination for existence.
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statDesc, err = bs.Stat(ctx, desc.Digest)
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if err == nil {
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t.Fatalf("unexpected non-error stating unmounted blob: %v", desc)
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}
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canonicalRef, err := reference.WithDigest(sourceRepository.Name(), desc.Digest)
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if err != nil {
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t.Fatal(err)
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}
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bw, err := bs.Create(ctx, WithMountFrom(canonicalRef))
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if bw != nil {
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t.Fatal("unexpected blobwriter returned from Create call, should mount instead")
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}
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ebm, ok := err.(distribution.ErrBlobMounted)
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if !ok {
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t.Fatalf("unexpected error mounting layer: %v", err)
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}
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if ebm.Descriptor != desc {
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t.Fatalf("descriptors not equal: %v != %v", ebm.Descriptor, desc)
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}
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// Test for existence.
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statDesc, err = bs.Stat(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("unexpected error checking for existence: %v, %#v", err, bs)
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}
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if statDesc != desc {
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t.Fatalf("descriptors not equal: %v != %v", statDesc, desc)
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}
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rc, err := bs.Open(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("unexpected error opening blob for read: %v", err)
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}
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defer rc.Close()
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h := sha256.New()
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nn, err = io.Copy(h, rc)
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if err != nil {
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t.Fatalf("error reading layer: %v", err)
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}
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if nn != randomDataSize {
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t.Fatalf("incorrect read length")
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}
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if digest.NewDigest("sha256", h) != dgst {
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t.Fatalf("unexpected digest from uploaded layer: %q != %q", digest.NewDigest("sha256", h), dgst)
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}
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// Delete the blob from the source repo
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err = sbs.Delete(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("Unexpected error deleting blob")
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}
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d, err := bs.Stat(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("unexpected error stating blob deleted from source repository: %v", err)
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}
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d, err = sbs.Stat(ctx, desc.Digest)
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if err == nil {
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t.Fatalf("unexpected non-error stating deleted blob: %v", d)
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}
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switch err {
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case distribution.ErrBlobUnknown:
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break
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default:
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t.Errorf("Unexpected error type stat-ing deleted manifest: %#v", err)
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}
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// Delete the blob from the dest repo
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err = bs.Delete(ctx, desc.Digest)
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if err != nil {
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t.Fatalf("Unexpected error deleting blob")
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}
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d, err = bs.Stat(ctx, desc.Digest)
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if err == nil {
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t.Fatalf("unexpected non-error stating deleted blob: %v", d)
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}
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switch err {
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case distribution.ErrBlobUnknown:
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break
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default:
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t.Errorf("Unexpected error type stat-ing deleted manifest: %#v", err)
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}
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}
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// TestLayerUploadZeroLength uploads zero-length
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func TestLayerUploadZeroLength(t *testing.T) {
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ctx := context.Background()
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imageName, _ := reference.ParseNamed("foo/bar")
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driver := inmemory.New()
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registry, err := NewRegistry(ctx, driver, BlobDescriptorCacheProvider(memory.NewInMemoryBlobDescriptorCacheProvider()), EnableDelete, EnableRedirect)
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if err != nil {
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t.Fatalf("error creating registry: %v", err)
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}
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repository, err := registry.Repository(ctx, imageName)
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if err != nil {
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t.Fatalf("unexpected error getting repo: %v", err)
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}
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bs := repository.Blobs(ctx)
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simpleUpload(t, bs, []byte{}, digest.DigestSha256EmptyTar)
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}
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func simpleUpload(t *testing.T, bs distribution.BlobIngester, blob []byte, expectedDigest digest.Digest) {
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ctx := context.Background()
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wr, err := bs.Create(ctx)
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if err != nil {
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t.Fatalf("unexpected error starting upload: %v", err)
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}
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nn, err := io.Copy(wr, bytes.NewReader(blob))
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if err != nil {
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t.Fatalf("error copying into blob writer: %v", err)
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}
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if nn != 0 {
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t.Fatalf("unexpected number of bytes copied: %v > 0", nn)
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}
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dgst, err := digest.FromReader(bytes.NewReader(blob))
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if err != nil {
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t.Fatalf("error getting digest: %v", err)
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}
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if dgst != expectedDigest {
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// sanity check on zero digest
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t.Fatalf("digest not as expected: %v != %v", dgst, expectedDigest)
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}
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desc, err := wr.Commit(ctx, distribution.Descriptor{Digest: dgst})
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if err != nil {
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t.Fatalf("unexpected error committing write: %v", err)
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}
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|
|
if desc.Digest != dgst {
|
|
t.Fatalf("unexpected digest: %v != %v", desc.Digest, dgst)
|
|
}
|
|
}
|
|
|
|
// seekerSize seeks to the end of seeker, checks the size and returns it to
|
|
// the original state, returning the size. The state of the seeker should be
|
|
// treated as unknown if an error is returned.
|
|
func seekerSize(seeker io.ReadSeeker) (int64, error) {
|
|
current, err := seeker.Seek(0, os.SEEK_CUR)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
end, err := seeker.Seek(0, os.SEEK_END)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
resumed, err := seeker.Seek(current, os.SEEK_SET)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
if resumed != current {
|
|
return 0, fmt.Errorf("error returning seeker to original state, could not seek back to original location")
|
|
}
|
|
|
|
return end, nil
|
|
}
|
|
|
|
// addBlob simply consumes the reader and inserts into the blob service,
|
|
// returning a descriptor on success.
|
|
func addBlob(ctx context.Context, bs distribution.BlobIngester, desc distribution.Descriptor, rd io.Reader) (distribution.Descriptor, error) {
|
|
wr, err := bs.Create(ctx)
|
|
if err != nil {
|
|
return distribution.Descriptor{}, err
|
|
}
|
|
defer wr.Cancel(ctx)
|
|
|
|
if nn, err := io.Copy(wr, rd); err != nil {
|
|
return distribution.Descriptor{}, err
|
|
} else if nn != desc.Size {
|
|
return distribution.Descriptor{}, fmt.Errorf("incorrect number of bytes copied: %v != %v", nn, desc.Size)
|
|
}
|
|
|
|
return wr.Commit(ctx, desc)
|
|
}
|