diff --git a/daemon/image.go b/daemon/image.go index 6faeea954a904..fb2b997264553 100644 --- a/daemon/image.go +++ b/daemon/image.go @@ -27,18 +27,18 @@ func (daemon *Daemon) GetImageID(refOrID string) (image.ID, error) { return "", err } if id != "" { - if _, err := daemon.imageStore.Get(image.ID(id)); err != nil { + if _, err := daemon.imageStore.Get(image.IDFromDigest(id)); err != nil { return "", ErrImageDoesNotExist{refOrID} } - return image.ID(id), nil + return image.IDFromDigest(id), nil } if id, err := daemon.referenceStore.Get(ref); err == nil { - return id, nil + return image.IDFromDigest(id), nil } if tagged, ok := ref.(reference.NamedTagged); ok { if id, err := daemon.imageStore.Search(tagged.Tag()); err == nil { - for _, namedRef := range daemon.referenceStore.References(id) { + for _, namedRef := range daemon.referenceStore.References(id.Digest()) { if namedRef.Name() == ref.Name() { return id, nil } diff --git a/daemon/image_delete.go b/daemon/image_delete.go index b071fca769212..fa3989f6a242b 100644 --- a/daemon/image_delete.go +++ b/daemon/image_delete.go @@ -68,7 +68,7 @@ func (daemon *Daemon) ImageDelete(imageRef string, force, prune bool) ([]types.I return nil, daemon.imageNotExistToErrcode(err) } - repoRefs := daemon.referenceStore.References(imgID) + repoRefs := daemon.referenceStore.References(imgID.Digest()) var removedRepositoryRef bool if !isImageIDPrefix(imgID.String(), imageRef) { @@ -102,7 +102,7 @@ func (daemon *Daemon) ImageDelete(imageRef string, force, prune bool) ([]types.I daemon.LogImageEvent(imgID.String(), imgID.String(), "untag") records = append(records, untaggedRecord) - repoRefs = daemon.referenceStore.References(imgID) + repoRefs = daemon.referenceStore.References(imgID.Digest()) // If a tag reference was removed and the only remaining // references to the same repository are digest references, @@ -239,7 +239,7 @@ func (daemon *Daemon) removeImageRef(ref reference.Named) (reference.Named, erro // daemon's event service. An "Untagged" types.ImageDelete is added to the // given list of records. func (daemon *Daemon) removeAllReferencesToImageID(imgID image.ID, records *[]types.ImageDelete) error { - imageRefs := daemon.referenceStore.References(imgID) + imageRefs := daemon.referenceStore.References(imgID.Digest()) for _, imageRef := range imageRefs { parsedRef, err := daemon.removeImageRef(imageRef) @@ -372,7 +372,7 @@ func (daemon *Daemon) checkImageDeleteConflict(imgID image.ID, mask conflictType } // Check if any repository tags/digest reference this image. - if mask&conflictActiveReference != 0 && len(daemon.referenceStore.References(imgID)) > 0 { + if mask&conflictActiveReference != 0 && len(daemon.referenceStore.References(imgID.Digest())) > 0 { return &imageDeleteConflict{ imgID: imgID, message: "image is referenced in multiple repositories", @@ -400,5 +400,5 @@ func (daemon *Daemon) checkImageDeleteConflict(imgID image.ID, mask conflictType // that there are no repository references to the given image and it has no // child images. func (daemon *Daemon) imageIsDangling(imgID image.ID) bool { - return !(len(daemon.referenceStore.References(imgID)) > 0 || len(daemon.imageStore.Children(imgID)) > 0) + return !(len(daemon.referenceStore.References(imgID.Digest())) > 0 || len(daemon.imageStore.Children(imgID)) > 0) } diff --git a/daemon/image_history.go b/daemon/image_history.go index 3696146ea0084..66b13fc2106cd 100644 --- a/daemon/image_history.go +++ b/daemon/image_history.go @@ -60,7 +60,7 @@ func (daemon *Daemon) ImageHistory(name string) ([]*types.ImageHistory, error) { h.ID = id.String() var tags []string - for _, r := range daemon.referenceStore.References(id) { + for _, r := range daemon.referenceStore.References(id.Digest()) { if _, ok := r.(reference.NamedTagged); ok { tags = append(tags, r.String()) } diff --git a/daemon/image_inspect.go b/daemon/image_inspect.go index 5831471d3c4a7..cff16423c9a65 100644 --- a/daemon/image_inspect.go +++ b/daemon/image_inspect.go @@ -17,7 +17,7 @@ func (daemon *Daemon) LookupImage(name string) (*types.ImageInspect, error) { return nil, fmt.Errorf("No such image: %s", name) } - refs := daemon.referenceStore.References(img.ID()) + refs := daemon.referenceStore.References(img.ID().Digest()) repoTags := []string{} repoDigests := []string{} for _, ref := range refs { diff --git a/daemon/image_tag.go b/daemon/image_tag.go index 01127d4707817..36fa3b462e389 100644 --- a/daemon/image_tag.go +++ b/daemon/image_tag.go @@ -28,7 +28,7 @@ func (daemon *Daemon) TagImage(imageName, repository, tag string) error { // TagImageWithReference adds the given reference to the image ID provided. func (daemon *Daemon) TagImageWithReference(imageID image.ID, newTag reference.Named) error { - if err := daemon.referenceStore.AddTag(newTag, imageID, true); err != nil { + if err := daemon.referenceStore.AddTag(newTag, imageID.Digest(), true); err != nil { return err } diff --git a/daemon/images.go b/daemon/images.go index 089b3997fd3ee..c9dd96cbe4594 100644 --- a/daemon/images.go +++ b/daemon/images.go @@ -135,7 +135,7 @@ func (daemon *Daemon) Images(filterArgs, filter string, all bool) ([]*types.Imag newImage := newImage(img, size) - for _, ref := range daemon.referenceStore.References(id) { + for _, ref := range daemon.referenceStore.References(id.Digest()) { if filter != "" { // filter by tag/repo name if filterTagged { // filter by tag, require full ref match if ref.String() != filter { diff --git a/distribution/pull.go b/distribution/pull.go index f1d362e5cc1ec..ea630f03bcb75 100644 --- a/distribution/pull.go +++ b/distribution/pull.go @@ -205,21 +205,21 @@ func ValidateRepoName(name string) error { return nil } -func addDigestReference(store reference.Store, ref reference.Named, dgst digest.Digest, imageID image.ID) error { +func addDigestReference(store reference.Store, ref reference.Named, dgst digest.Digest, id digest.Digest) error { dgstRef, err := reference.WithDigest(ref, dgst) if err != nil { return err } - if oldTagImageID, err := store.Get(dgstRef); err == nil { - if oldTagImageID != imageID { + if oldTagID, err := store.Get(dgstRef); err == nil { + if oldTagID != id { // Updating digests not supported by reference store - logrus.Errorf("Image ID for digest %s changed from %s to %s, cannot update", dgst.String(), oldTagImageID, imageID) + logrus.Errorf("Image ID for digest %s changed from %s to %s, cannot update", dgst.String(), oldTagID, id) } return nil } else if err != reference.ErrDoesNotExist { return err } - return store.AddDigest(dgstRef, imageID, true) + return store.AddDigest(dgstRef, id, true) } diff --git a/distribution/pull_v1.go b/distribution/pull_v1.go index 3b7175e91e973..f02e8fd75ebba 100644 --- a/distribution/pull_v1.go +++ b/distribution/pull_v1.go @@ -248,7 +248,7 @@ func (p *v1Puller) pullImage(ctx context.Context, v1ID, endpoint string, localNa return err } - if err := p.config.ReferenceStore.AddTag(localNameRef, imageID, true); err != nil { + if err := p.config.ReferenceStore.AddTag(localNameRef, imageID.Digest(), true); err != nil { return err } diff --git a/distribution/pull_v2.go b/distribution/pull_v2.go index 5ac971b6e2086..09768b76defad 100644 --- a/distribution/pull_v2.go +++ b/distribution/pull_v2.go @@ -374,23 +374,23 @@ func (p *v2Puller) pullV2Tag(ctx context.Context, ref reference.Named) (tagUpdat progress.Message(p.config.ProgressOutput, tagOrDigest, "Pulling from "+p.repo.Named().Name()) var ( - imageID image.ID + id digest.Digest manifestDigest digest.Digest ) switch v := manifest.(type) { case *schema1.SignedManifest: - imageID, manifestDigest, err = p.pullSchema1(ctx, ref, v) + id, manifestDigest, err = p.pullSchema1(ctx, ref, v) if err != nil { return false, err } case *schema2.DeserializedManifest: - imageID, manifestDigest, err = p.pullSchema2(ctx, ref, v) + id, manifestDigest, err = p.pullSchema2(ctx, ref, v) if err != nil { return false, err } case *manifestlist.DeserializedManifestList: - imageID, manifestDigest, err = p.pullManifestList(ctx, ref, v) + id, manifestDigest, err = p.pullManifestList(ctx, ref, v) if err != nil { return false, err } @@ -400,31 +400,31 @@ func (p *v2Puller) pullV2Tag(ctx context.Context, ref reference.Named) (tagUpdat progress.Message(p.config.ProgressOutput, "", "Digest: "+manifestDigest.String()) - oldTagImageID, err := p.config.ReferenceStore.Get(ref) + oldTagID, err := p.config.ReferenceStore.Get(ref) if err == nil { - if oldTagImageID == imageID { - return false, addDigestReference(p.config.ReferenceStore, ref, manifestDigest, imageID) + if oldTagID == id { + return false, addDigestReference(p.config.ReferenceStore, ref, manifestDigest, id) } } else if err != reference.ErrDoesNotExist { return false, err } if canonical, ok := ref.(reference.Canonical); ok { - if err = p.config.ReferenceStore.AddDigest(canonical, imageID, true); err != nil { + if err = p.config.ReferenceStore.AddDigest(canonical, id, true); err != nil { return false, err } } else { - if err = addDigestReference(p.config.ReferenceStore, ref, manifestDigest, imageID); err != nil { + if err = addDigestReference(p.config.ReferenceStore, ref, manifestDigest, id); err != nil { return false, err } - if err = p.config.ReferenceStore.AddTag(ref, imageID, true); err != nil { + if err = p.config.ReferenceStore.AddTag(ref, id, true); err != nil { return false, err } } return true, nil } -func (p *v2Puller) pullSchema1(ctx context.Context, ref reference.Named, unverifiedManifest *schema1.SignedManifest) (imageID image.ID, manifestDigest digest.Digest, err error) { +func (p *v2Puller) pullSchema1(ctx context.Context, ref reference.Named, unverifiedManifest *schema1.SignedManifest) (id digest.Digest, manifestDigest digest.Digest, err error) { var verifiedManifest *schema1.Manifest verifiedManifest, err = verifySchema1Manifest(unverifiedManifest, ref) if err != nil { @@ -487,28 +487,27 @@ func (p *v2Puller) pullSchema1(ctx context.Context, ref reference.Named, unverif return "", "", err } - imageID, err = p.config.ImageStore.Create(config) + imageID, err := p.config.ImageStore.Create(config) if err != nil { return "", "", err } manifestDigest = digest.FromBytes(unverifiedManifest.Canonical) - return imageID, manifestDigest, nil + return imageID.Digest(), manifestDigest, nil } -func (p *v2Puller) pullSchema2(ctx context.Context, ref reference.Named, mfst *schema2.DeserializedManifest) (imageID image.ID, manifestDigest digest.Digest, err error) { +func (p *v2Puller) pullSchema2(ctx context.Context, ref reference.Named, mfst *schema2.DeserializedManifest) (id digest.Digest, manifestDigest digest.Digest, err error) { manifestDigest, err = schema2ManifestDigest(ref, mfst) if err != nil { return "", "", err } target := mfst.Target() - imageID = image.ID(target.Digest) - if _, err := p.config.ImageStore.Get(imageID); err == nil { + if _, err := p.config.ImageStore.Get(image.IDFromDigest(target.Digest)); err == nil { // If the image already exists locally, no need to pull // anything. - return imageID, manifestDigest, nil + return target.Digest, manifestDigest, nil } var descriptors []xfer.DownloadDescriptor @@ -534,7 +533,7 @@ func (p *v2Puller) pullSchema2(ctx context.Context, ref reference.Named, mfst *s // Pull the image config go func() { - configJSON, err := p.pullSchema2ImageConfig(ctx, target.Digest) + configJSON, err := p.pullSchema2Config(ctx, target.Digest) if err != nil { errChan <- ImageConfigPullError{Err: err} cancel() @@ -618,12 +617,12 @@ func (p *v2Puller) pullSchema2(ctx context.Context, ref reference.Named, mfst *s } } - imageID, err = p.config.ImageStore.Create(configJSON) + imageID, err := p.config.ImageStore.Create(configJSON) if err != nil { return "", "", err } - return imageID, manifestDigest, nil + return imageID.Digest(), manifestDigest, nil } func receiveConfig(configChan <-chan []byte, errChan <-chan error) ([]byte, image.Image, error) { @@ -643,7 +642,7 @@ func receiveConfig(configChan <-chan []byte, errChan <-chan error) ([]byte, imag // pullManifestList handles "manifest lists" which point to various // platform-specifc manifests. -func (p *v2Puller) pullManifestList(ctx context.Context, ref reference.Named, mfstList *manifestlist.DeserializedManifestList) (imageID image.ID, manifestListDigest digest.Digest, err error) { +func (p *v2Puller) pullManifestList(ctx context.Context, ref reference.Named, mfstList *manifestlist.DeserializedManifestList) (id digest.Digest, manifestListDigest digest.Digest, err error) { manifestListDigest, err = schema2ManifestDigest(ref, mfstList) if err != nil { return "", "", err @@ -681,12 +680,12 @@ func (p *v2Puller) pullManifestList(ctx context.Context, ref reference.Named, mf switch v := manifest.(type) { case *schema1.SignedManifest: - imageID, _, err = p.pullSchema1(ctx, manifestRef, v) + id, _, err = p.pullSchema1(ctx, manifestRef, v) if err != nil { return "", "", err } case *schema2.DeserializedManifest: - imageID, _, err = p.pullSchema2(ctx, manifestRef, v) + id, _, err = p.pullSchema2(ctx, manifestRef, v) if err != nil { return "", "", err } @@ -694,10 +693,10 @@ func (p *v2Puller) pullManifestList(ctx context.Context, ref reference.Named, mf return "", "", errors.New("unsupported manifest format") } - return imageID, manifestListDigest, err + return id, manifestListDigest, err } -func (p *v2Puller) pullSchema2ImageConfig(ctx context.Context, dgst digest.Digest) (configJSON []byte, err error) { +func (p *v2Puller) pullSchema2Config(ctx context.Context, dgst digest.Digest) (configJSON []byte, err error) { blobs := p.repo.Blobs(ctx) configJSON, err = blobs.Get(ctx, dgst) if err != nil { diff --git a/distribution/push_v1.go b/distribution/push_v1.go index b6e4a13046645..b18958cdbd592 100644 --- a/distribution/push_v1.go +++ b/distribution/push_v1.go @@ -92,7 +92,7 @@ type v1TopImage struct { } func newV1TopImage(imageID image.ID, img *image.Image, l layer.Layer, parent *v1DependencyImage) (*v1TopImage, error) { - v1ID := digest.Digest(imageID).Hex() + v1ID := imageID.Digest().Hex() parentV1ID := "" if parent != nil { parentV1ID = parent.V1ID() @@ -149,10 +149,12 @@ func (p *v1Pusher) getImageList() (imageList []v1Image, tagsByImage map[image.ID if isTagged { // Push a specific tag var imgID image.ID - imgID, err = p.config.ReferenceStore.Get(p.ref) + var dgst digest.Digest + dgst, err = p.config.ReferenceStore.Get(p.ref) if err != nil { return } + imgID = image.IDFromDigest(dgst) imageList, err = p.imageListForTag(imgID, nil, &referencedLayers) if err != nil { @@ -164,7 +166,7 @@ func (p *v1Pusher) getImageList() (imageList []v1Image, tagsByImage map[image.ID return } - imagesSeen := make(map[image.ID]struct{}) + imagesSeen := make(map[digest.Digest]struct{}) dependenciesSeen := make(map[layer.ChainID]*v1DependencyImage) associations := p.config.ReferenceStore.ReferencesByName(p.ref) @@ -174,15 +176,16 @@ func (p *v1Pusher) getImageList() (imageList []v1Image, tagsByImage map[image.ID continue } - tagsByImage[association.ImageID] = append(tagsByImage[association.ImageID], tagged.Tag()) + imgID := image.IDFromDigest(association.ID) + tagsByImage[imgID] = append(tagsByImage[imgID], tagged.Tag()) - if _, present := imagesSeen[association.ImageID]; present { + if _, present := imagesSeen[association.ID]; present { // Skip generating image list for already-seen image continue } - imagesSeen[association.ImageID] = struct{}{} + imagesSeen[association.ID] = struct{}{} - imageListForThisTag, err := p.imageListForTag(association.ImageID, dependenciesSeen, &referencedLayers) + imageListForThisTag, err := p.imageListForTag(imgID, dependenciesSeen, &referencedLayers) if err != nil { return nil, nil, nil, err } diff --git a/distribution/push_v2.go b/distribution/push_v2.go index cd919e2f52537..f1ca554deef19 100644 --- a/distribution/push_v2.go +++ b/distribution/push_v2.go @@ -99,7 +99,7 @@ func (p *v2Pusher) pushV2Repository(ctx context.Context) (err error) { for _, association := range p.config.ReferenceStore.ReferencesByName(p.ref) { if namedTagged, isNamedTagged := association.Ref.(reference.NamedTagged); isNamedTagged { pushed++ - if err := p.pushV2Tag(ctx, namedTagged, association.ImageID); err != nil { + if err := p.pushV2Tag(ctx, namedTagged, association.ID); err != nil { return err } } @@ -112,10 +112,10 @@ func (p *v2Pusher) pushV2Repository(ctx context.Context) (err error) { return nil } -func (p *v2Pusher) pushV2Tag(ctx context.Context, ref reference.NamedTagged, imageID image.ID) error { +func (p *v2Pusher) pushV2Tag(ctx context.Context, ref reference.NamedTagged, id digest.Digest) error { logrus.Debugf("Pushing repository: %s", ref.String()) - img, err := p.config.ImageStore.Get(imageID) + img, err := p.config.ImageStore.Get(image.IDFromDigest(id)) if err != nil { return fmt.Errorf("could not find image from tag %s: %v", ref.String(), err) } @@ -207,7 +207,7 @@ func (p *v2Pusher) pushV2Tag(ctx context.Context, ref reference.NamedTagged, ima manifestDigest := digest.FromBytes(canonicalManifest) progress.Messagef(p.config.ProgressOutput, "", "%s: digest: %s size: %d", ref.Tag(), manifestDigest, len(canonicalManifest)) - if err := addDigestReference(p.config.ReferenceStore, ref, manifestDigest, imageID); err != nil { + if err := addDigestReference(p.config.ReferenceStore, ref, manifestDigest, id); err != nil { return err } diff --git a/image/fs.go b/image/fs.go index 955e1b8534751..39cfbf5d74d75 100644 --- a/image/fs.go +++ b/image/fs.go @@ -12,18 +12,18 @@ import ( "github.com/docker/docker/pkg/ioutils" ) -// IDWalkFunc is function called by StoreBackend.Walk -type IDWalkFunc func(id ID) error +// DigestWalkFunc is function called by StoreBackend.Walk +type DigestWalkFunc func(id digest.Digest) error // StoreBackend provides interface for image.Store persistence type StoreBackend interface { - Walk(f IDWalkFunc) error - Get(id ID) ([]byte, error) - Set(data []byte) (ID, error) - Delete(id ID) error - SetMetadata(id ID, key string, data []byte) error - GetMetadata(id ID, key string) ([]byte, error) - DeleteMetadata(id ID, key string) error + Walk(f DigestWalkFunc) error + Get(id digest.Digest) ([]byte, error) + Set(data []byte) (digest.Digest, error) + Delete(id digest.Digest) error + SetMetadata(id digest.Digest, key string, data []byte) error + GetMetadata(id digest.Digest, key string) ([]byte, error) + DeleteMetadata(id digest.Digest, key string) error } // fs implements StoreBackend using the filesystem. @@ -55,18 +55,16 @@ func newFSStore(root string) (*fs, error) { return s, nil } -func (s *fs) contentFile(id ID) string { - dgst := digest.Digest(id) +func (s *fs) contentFile(dgst digest.Digest) string { return filepath.Join(s.root, contentDirName, string(dgst.Algorithm()), dgst.Hex()) } -func (s *fs) metadataDir(id ID) string { - dgst := digest.Digest(id) +func (s *fs) metadataDir(dgst digest.Digest) string { return filepath.Join(s.root, metadataDirName, string(dgst.Algorithm()), dgst.Hex()) } // Walk calls the supplied callback for each image ID in the storage backend. -func (s *fs) Walk(f IDWalkFunc) error { +func (s *fs) Walk(f DigestWalkFunc) error { // Only Canonical digest (sha256) is currently supported s.RLock() dir, err := ioutil.ReadDir(filepath.Join(s.root, contentDirName, string(digest.Canonical))) @@ -80,37 +78,37 @@ func (s *fs) Walk(f IDWalkFunc) error { logrus.Debugf("Skipping invalid digest %s: %s", dgst, err) continue } - if err := f(ID(dgst)); err != nil { + if err := f(dgst); err != nil { return err } } return nil } -// Get returns the content stored under a given ID. -func (s *fs) Get(id ID) ([]byte, error) { +// Get returns the content stored under a given digest. +func (s *fs) Get(dgst digest.Digest) ([]byte, error) { s.RLock() defer s.RUnlock() - return s.get(id) + return s.get(dgst) } -func (s *fs) get(id ID) ([]byte, error) { - content, err := ioutil.ReadFile(s.contentFile(id)) +func (s *fs) get(dgst digest.Digest) ([]byte, error) { + content, err := ioutil.ReadFile(s.contentFile(dgst)) if err != nil { return nil, err } // todo: maybe optional - if ID(digest.FromBytes(content)) != id { - return nil, fmt.Errorf("failed to verify image: %v", id) + if digest.FromBytes(content) != dgst { + return nil, fmt.Errorf("failed to verify: %v", dgst) } return content, nil } -// Set stores content under a given ID. -func (s *fs) Set(data []byte) (ID, error) { +// Set stores content by checksum. +func (s *fs) Set(data []byte) (digest.Digest, error) { s.Lock() defer s.Unlock() @@ -118,58 +116,58 @@ func (s *fs) Set(data []byte) (ID, error) { return "", fmt.Errorf("Invalid empty data") } - id := ID(digest.FromBytes(data)) - if err := ioutils.AtomicWriteFile(s.contentFile(id), data, 0600); err != nil { + dgst := digest.FromBytes(data) + if err := ioutils.AtomicWriteFile(s.contentFile(dgst), data, 0600); err != nil { return "", err } - return id, nil + return dgst, nil } -// Delete removes content and metadata files associated with the ID. -func (s *fs) Delete(id ID) error { +// Delete removes content and metadata files associated with the digest. +func (s *fs) Delete(dgst digest.Digest) error { s.Lock() defer s.Unlock() - if err := os.RemoveAll(s.metadataDir(id)); err != nil { + if err := os.RemoveAll(s.metadataDir(dgst)); err != nil { return err } - if err := os.Remove(s.contentFile(id)); err != nil { + if err := os.Remove(s.contentFile(dgst)); err != nil { return err } return nil } // SetMetadata sets metadata for a given ID. It fails if there's no base file. -func (s *fs) SetMetadata(id ID, key string, data []byte) error { +func (s *fs) SetMetadata(dgst digest.Digest, key string, data []byte) error { s.Lock() defer s.Unlock() - if _, err := s.get(id); err != nil { + if _, err := s.get(dgst); err != nil { return err } - baseDir := filepath.Join(s.metadataDir(id)) + baseDir := filepath.Join(s.metadataDir(dgst)) if err := os.MkdirAll(baseDir, 0700); err != nil { return err } - return ioutils.AtomicWriteFile(filepath.Join(s.metadataDir(id), key), data, 0600) + return ioutils.AtomicWriteFile(filepath.Join(s.metadataDir(dgst), key), data, 0600) } -// GetMetadata returns metadata for a given ID. -func (s *fs) GetMetadata(id ID, key string) ([]byte, error) { +// GetMetadata returns metadata for a given digest. +func (s *fs) GetMetadata(dgst digest.Digest, key string) ([]byte, error) { s.RLock() defer s.RUnlock() - if _, err := s.get(id); err != nil { + if _, err := s.get(dgst); err != nil { return nil, err } - return ioutil.ReadFile(filepath.Join(s.metadataDir(id), key)) + return ioutil.ReadFile(filepath.Join(s.metadataDir(dgst), key)) } -// DeleteMetadata removes the metadata associated with an ID. -func (s *fs) DeleteMetadata(id ID, key string) error { +// DeleteMetadata removes the metadata associated with a digest. +func (s *fs) DeleteMetadata(dgst digest.Digest, key string) error { s.Lock() defer s.Unlock() - return os.RemoveAll(filepath.Join(s.metadataDir(id), key)) + return os.RemoveAll(filepath.Join(s.metadataDir(dgst), key)) } diff --git a/image/fs_test.go b/image/fs_test.go index 1a6f849f6b4f4..8d602d97ebdf6 100644 --- a/image/fs_test.go +++ b/image/fs_test.go @@ -128,7 +128,7 @@ func testMetadataGetSet(t *testing.T, store StoreBackend) { } tcases := []struct { - id ID + id digest.Digest key string value []byte }{ @@ -158,12 +158,12 @@ func testMetadataGetSet(t *testing.T, store StoreBackend) { } id3 := digest.FromBytes([]byte("baz")) - err = store.SetMetadata(ID(id3), "tkey", []byte("tval")) + err = store.SetMetadata(id3, "tkey", []byte("tval")) if err == nil { t.Fatal("Expected error for setting metadata for unknown ID.") } - _, err = store.GetMetadata(ID(id3), "tkey") + _, err = store.GetMetadata(id3, "tkey") if err == nil { t.Fatal("Expected error for getting metadata for unknown ID.") } @@ -232,7 +232,7 @@ func TestFSInvalidWalker(t *testing.T) { } n := 0 - err = fs.Walk(func(id ID) error { + err = fs.Walk(func(id digest.Digest) error { if id != fooID { t.Fatalf("Invalid walker ID %q, expected %q", id, fooID) } @@ -250,10 +250,10 @@ func TestFSInvalidWalker(t *testing.T) { func testGetSet(t *testing.T, store StoreBackend) { type tcase struct { input []byte - expected ID + expected digest.Digest } tcases := []tcase{ - {[]byte("foobar"), ID("sha256:c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2")}, + {[]byte("foobar"), digest.Digest("sha256:c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2")}, } randomInput := make([]byte, 8*1024) @@ -269,7 +269,7 @@ func testGetSet(t *testing.T, store StoreBackend) { } tcases = append(tcases, tcase{ input: randomInput, - expected: ID("sha256:" + hex.EncodeToString(h.Sum(nil))), + expected: digest.Digest("sha256:" + hex.EncodeToString(h.Sum(nil))), }) for _, tc := range tcases { @@ -299,7 +299,7 @@ func testGetSet(t *testing.T, store StoreBackend) { } } - for _, key := range []ID{"foobar:abc", "sha256:abc", "sha256:c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2a"} { + for _, key := range []digest.Digest{"foobar:abc", "sha256:abc", "sha256:c3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2a"} { _, err := store.Get(key) if err == nil { t.Fatalf("Expected error for ID %q.", key) @@ -352,11 +352,11 @@ func testWalker(t *testing.T, store StoreBackend) { t.Fatal(err) } - tcases := make(map[ID]struct{}) + tcases := make(map[digest.Digest]struct{}) tcases[id] = struct{}{} tcases[id2] = struct{}{} n := 0 - err = store.Walk(func(id ID) error { + err = store.Walk(func(id digest.Digest) error { delete(tcases, id) n++ return nil @@ -373,9 +373,9 @@ func testWalker(t *testing.T, store StoreBackend) { } // stop on error - tcases = make(map[ID]struct{}) + tcases = make(map[digest.Digest]struct{}) tcases[id] = struct{}{} - err = store.Walk(func(id ID) error { + err = store.Walk(func(id digest.Digest) error { return errors.New("") }) if err == nil { diff --git a/image/image.go b/image/image.go index d3034cc10d723..29a990a556603 100644 --- a/image/image.go +++ b/image/image.go @@ -14,7 +14,17 @@ import ( type ID digest.Digest func (id ID) String() string { - return digest.Digest(id).String() + return id.Digest().String() +} + +// Digest converts ID into a digest +func (id ID) Digest() digest.Digest { + return digest.Digest(id) +} + +// IDFromDigest creates an ID from a digest +func IDFromDigest(digest digest.Digest) ID { + return ID(digest) } // V1Image stores the V1 image configuration. @@ -72,9 +82,9 @@ func (img *Image) ID() ID { return img.computedID } -// ImageID stringizes ID. +// ImageID stringifies ID. func (img *Image) ImageID() string { - return string(img.ID()) + return img.ID().String() } // RunConfig returns the image's container config. diff --git a/image/store.go b/image/store.go index 92ac438db7d02..b61c456097ca7 100644 --- a/image/store.go +++ b/image/store.go @@ -61,10 +61,10 @@ func NewImageStore(fs StoreBackend, ls LayerGetReleaser) (Store, error) { } func (is *store) restore() error { - err := is.fs.Walk(func(id ID) error { - img, err := is.Get(id) + err := is.fs.Walk(func(dgst digest.Digest) error { + img, err := is.Get(IDFromDigest(dgst)) if err != nil { - logrus.Errorf("invalid image %v, %v", id, err) + logrus.Errorf("invalid image %v, %v", dgst, err) return nil } var l layer.Layer @@ -74,7 +74,7 @@ func (is *store) restore() error { return err } } - if err := is.digestSet.Add(digest.Digest(id)); err != nil { + if err := is.digestSet.Add(dgst); err != nil { return err } @@ -83,7 +83,7 @@ func (is *store) restore() error { children: make(map[ID]struct{}), } - is.images[ID(id)] = imageMeta + is.images[IDFromDigest(dgst)] = imageMeta return nil }) @@ -131,7 +131,7 @@ func (is *store) Create(config []byte) (ID, error) { if err != nil { return "", err } - imageID := ID(dgst) + imageID := IDFromDigest(dgst) is.Lock() defer is.Unlock() @@ -156,7 +156,7 @@ func (is *store) Create(config []byte) (ID, error) { } is.images[imageID] = imageMeta - if err := is.digestSet.Add(digest.Digest(imageID)); err != nil { + if err := is.digestSet.Add(imageID.Digest()); err != nil { delete(is.images, imageID) return "", err } @@ -175,13 +175,13 @@ func (is *store) Search(term string) (ID, error) { } return "", err } - return ID(dgst), nil + return IDFromDigest(dgst), nil } func (is *store) Get(id ID) (*Image, error) { // todo: Check if image is in images // todo: Detect manual insertions and start using them - config, err := is.fs.Get(id) + config, err := is.fs.Get(id.Digest()) if err != nil { return nil, err } @@ -209,17 +209,17 @@ func (is *store) Delete(id ID) ([]layer.Metadata, error) { return nil, fmt.Errorf("unrecognized image ID %s", id.String()) } for id := range imageMeta.children { - is.fs.DeleteMetadata(id, "parent") + is.fs.DeleteMetadata(id.Digest(), "parent") } if parent, err := is.GetParent(id); err == nil && is.images[parent] != nil { delete(is.images[parent].children, id) } - if err := is.digestSet.Remove(digest.Digest(id)); err != nil { + if err := is.digestSet.Remove(id.Digest()); err != nil { logrus.Errorf("error removing %s from digest set: %q", id, err) } delete(is.images, id) - is.fs.Delete(id) + is.fs.Delete(id.Digest()) if imageMeta.layer != nil { return is.ls.Release(imageMeta.layer) @@ -238,11 +238,11 @@ func (is *store) SetParent(id, parent ID) error { delete(is.images[parent].children, id) } parentMeta.children[id] = struct{}{} - return is.fs.SetMetadata(id, "parent", []byte(parent)) + return is.fs.SetMetadata(id.Digest(), "parent", []byte(parent)) } func (is *store) GetParent(id ID) (ID, error) { - d, err := is.fs.GetMetadata(id, "parent") + d, err := is.fs.GetMetadata(id.Digest(), "parent") if err != nil { return "", err } diff --git a/image/tarexport/load.go b/image/tarexport/load.go index 01f9a6de86e99..bae95bfd97c7a 100644 --- a/image/tarexport/load.go +++ b/image/tarexport/load.go @@ -11,6 +11,7 @@ import ( "github.com/Sirupsen/logrus" "github.com/docker/distribution" + "github.com/docker/distribution/digest" "github.com/docker/docker/image" "github.com/docker/docker/image/v1" "github.com/docker/docker/layer" @@ -123,7 +124,7 @@ func (l *tarexporter) Load(inTar io.ReadCloser, outStream io.Writer, quiet bool) if !ok { return fmt.Errorf("invalid tag %q", repoTag) } - l.setLoadedTag(ref, imgID, outStream) + l.setLoadedTag(ref, imgID.Digest(), outStream) outStream.Write([]byte(fmt.Sprintf("Loaded image: %s\n", ref))) imageRefCount++ } @@ -195,7 +196,7 @@ func (l *tarexporter) loadLayer(filename string, rootFS image.RootFS, id string, return l.ls.Register(inflatedLayerData, rootFS.ChainID()) } -func (l *tarexporter) setLoadedTag(ref reference.NamedTagged, imgID image.ID, outStream io.Writer) error { +func (l *tarexporter) setLoadedTag(ref reference.NamedTagged, imgID digest.Digest, outStream io.Writer) error { if prevID, err := l.rs.Get(ref); err == nil && prevID != imgID { fmt.Fprintf(outStream, "The image %s already exists, renaming the old one with ID %s to empty string\n", ref.String(), string(prevID)) // todo: this message is wrong in case of multiple tags } @@ -253,7 +254,7 @@ func (l *tarexporter) legacyLoad(tmpDir string, outStream io.Writer, progressOut if err != nil { return err } - l.setLoadedTag(ref, imgID, outStream) + l.setLoadedTag(ref, imgID.Digest(), outStream) } } diff --git a/image/tarexport/save.go b/image/tarexport/save.go index 5f1bd7f1ce9e4..828ac9a7e7e75 100644 --- a/image/tarexport/save.go +++ b/image/tarexport/save.go @@ -77,11 +77,11 @@ func (l *tarexporter) parseNames(names []string) (map[image.ID]*imageDescriptor, return nil, err } if id != "" { - _, err := l.is.Get(image.ID(id)) + _, err := l.is.Get(image.IDFromDigest(id)) if err != nil { return nil, err } - addAssoc(image.ID(id), nil) + addAssoc(image.IDFromDigest(id), nil) continue } if ref.Name() == string(digest.Canonical) { @@ -95,7 +95,7 @@ func (l *tarexporter) parseNames(names []string) (map[image.ID]*imageDescriptor, if reference.IsNameOnly(ref) { assocs := l.rs.ReferencesByName(ref) for _, assoc := range assocs { - addAssoc(assoc.ImageID, assoc.Ref) + addAssoc(image.IDFromDigest(assoc.ID), assoc.Ref) } if len(assocs) == 0 { imgID, err := l.is.Search(name) @@ -106,11 +106,11 @@ func (l *tarexporter) parseNames(names []string) (map[image.ID]*imageDescriptor, } continue } - var imgID image.ID - if imgID, err = l.rs.Get(ref); err != nil { + id, err = l.rs.Get(ref) + if err != nil { return nil, err } - addAssoc(imgID, ref) + addAssoc(image.IDFromDigest(id), ref) } return imgDescr, nil @@ -155,7 +155,7 @@ func (s *saveSession) save(outStream io.Writer) error { } manifest = append(manifest, manifestItem{ - Config: digest.Digest(id).Hex() + ".json", + Config: id.Digest().Hex() + ".json", RepoTags: repoTags, Layers: layers, LayerSources: foreignSrcs, @@ -264,7 +264,7 @@ func (s *saveSession) saveImage(id image.ID) (map[layer.DiffID]distribution.Desc } } - configFile := filepath.Join(s.outDir, digest.Digest(id).Hex()+".json") + configFile := filepath.Join(s.outDir, id.Digest().Hex()+".json") if err := ioutil.WriteFile(configFile, img.RawJSON(), 0644); err != nil { return nil, err } diff --git a/migrate/v1/migratev1.go b/migrate/v1/migratev1.go index 3c0e550d0a191..90bf627dfe6bc 100644 --- a/migrate/v1/migratev1.go +++ b/migrate/v1/migratev1.go @@ -294,8 +294,8 @@ func migrateContainers(root string, ls graphIDMounter, is image.Store, imageMapp } type refAdder interface { - AddTag(ref reference.Named, id image.ID, force bool) error - AddDigest(ref reference.Canonical, id image.ID, force bool) error + AddTag(ref reference.Named, id digest.Digest, force bool) error + AddDigest(ref reference.Canonical, id digest.Digest, force bool) error } func migrateRefs(root, driverName string, rs refAdder, mappings map[string]image.ID) error { @@ -336,7 +336,7 @@ func migrateRefs(root, driverName string, rs refAdder, mappings map[string]image logrus.Errorf("migrate tags: invalid digest %q, %q", dgst, err) continue } - if err := rs.AddDigest(canonical, strongID, false); err != nil { + if err := rs.AddDigest(canonical, strongID.Digest(), false); err != nil { logrus.Errorf("can't migrate digest %q for %q, err: %q", ref.String(), strongID, err) } } else { @@ -345,7 +345,7 @@ func migrateRefs(root, driverName string, rs refAdder, mappings map[string]image logrus.Errorf("migrate tags: invalid tag %q, %q", tag, err) continue } - if err := rs.AddTag(tagRef, strongID, false); err != nil { + if err := rs.AddTag(tagRef, strongID.Digest(), false); err != nil { logrus.Errorf("can't migrate tag %q for %q, err: %q", ref.String(), strongID, err) } } diff --git a/migrate/v1/migratev1_test.go b/migrate/v1/migratev1_test.go index 88f6bbdfad4ef..6c08472b90d2e 100644 --- a/migrate/v1/migratev1_test.go +++ b/migrate/v1/migratev1_test.go @@ -333,14 +333,14 @@ type mockTagAdder struct { refs map[string]string } -func (t *mockTagAdder) AddTag(ref reference.Named, id image.ID, force bool) error { +func (t *mockTagAdder) AddTag(ref reference.Named, id digest.Digest, force bool) error { if t.refs == nil { t.refs = make(map[string]string) } t.refs[ref.String()] = id.String() return nil } -func (t *mockTagAdder) AddDigest(ref reference.Canonical, id image.ID, force bool) error { +func (t *mockTagAdder) AddDigest(ref reference.Canonical, id digest.Digest, force bool) error { return t.AddTag(ref, id, force) } diff --git a/reference/store.go b/reference/store.go index fb72fff90aa26..71ca236c9c820 100644 --- a/reference/store.go +++ b/reference/store.go @@ -10,7 +10,6 @@ import ( "sync" "github.com/docker/distribution/digest" - "github.com/docker/docker/image" "github.com/docker/docker/pkg/ioutils" ) @@ -22,18 +21,18 @@ var ( // An Association is a tuple associating a reference with an image ID. type Association struct { - Ref Named - ImageID image.ID + Ref Named + ID digest.Digest } // Store provides the set of methods which can operate on a tag store. type Store interface { - References(id image.ID) []Named + References(id digest.Digest) []Named ReferencesByName(ref Named) []Association - AddTag(ref Named, id image.ID, force bool) error - AddDigest(ref Canonical, id image.ID, force bool) error + AddTag(ref Named, id digest.Digest, force bool) error + AddDigest(ref Canonical, id digest.Digest, force bool) error Delete(ref Named) (bool, error) - Get(ref Named) (image.ID, error) + Get(ref Named) (digest.Digest, error) } type store struct { @@ -45,12 +44,12 @@ type store struct { Repositories map[string]repository // referencesByIDCache is a cache of references indexed by ID, to speed // up References. - referencesByIDCache map[image.ID]map[string]Named + referencesByIDCache map[digest.Digest]map[string]Named } -// Repository maps tags to image IDs. The key is a stringified Reference, +// Repository maps tags to digests. The key is a stringified Reference, // including the repository name. -type repository map[string]image.ID +type repository map[string]digest.Digest type lexicalRefs []Named @@ -75,7 +74,7 @@ func NewReferenceStore(jsonPath string) (Store, error) { store := &store{ jsonPath: abspath, Repositories: make(map[string]repository), - referencesByIDCache: make(map[image.ID]map[string]Named), + referencesByIDCache: make(map[digest.Digest]map[string]Named), } // Load the json file if it exists, otherwise create it. if err := store.reload(); os.IsNotExist(err) { @@ -90,7 +89,7 @@ func NewReferenceStore(jsonPath string) (Store, error) { // AddTag adds a tag reference to the store. If force is set to true, existing // references can be overwritten. This only works for tags, not digests. -func (store *store) AddTag(ref Named, id image.ID, force bool) error { +func (store *store) AddTag(ref Named, id digest.Digest, force bool) error { if _, isCanonical := ref.(Canonical); isCanonical { return errors.New("refusing to create a tag with a digest reference") } @@ -98,11 +97,11 @@ func (store *store) AddTag(ref Named, id image.ID, force bool) error { } // AddDigest adds a digest reference to the store. -func (store *store) AddDigest(ref Canonical, id image.ID, force bool) error { +func (store *store) AddDigest(ref Canonical, id digest.Digest, force bool) error { return store.addReference(ref, id, force) } -func (store *store) addReference(ref Named, id image.ID, force bool) error { +func (store *store) addReference(ref Named, id digest.Digest, force bool) error { if ref.Name() == string(digest.Canonical) { return errors.New("refusing to create an ambiguous tag using digest algorithm as name") } @@ -112,7 +111,7 @@ func (store *store) addReference(ref Named, id image.ID, force bool) error { repository, exists := store.Repositories[ref.Name()] if !exists || repository == nil { - repository = make(map[string]image.ID) + repository = make(map[string]digest.Digest) store.Repositories[ref.Name()] = repository } @@ -179,8 +178,8 @@ func (store *store) Delete(ref Named) (bool, error) { return false, ErrDoesNotExist } -// Get retrieves an item from the store by -func (store *store) Get(ref Named) (image.ID, error) { +// Get retrieves an item from the store by reference +func (store *store) Get(ref Named) (digest.Digest, error) { ref = WithDefaultTag(ref) store.mu.RLock() @@ -199,9 +198,9 @@ func (store *store) Get(ref Named) (image.ID, error) { return id, nil } -// References returns a slice of references to the given image ID. The slice -// will be nil if there are no references to this image ID. -func (store *store) References(id image.ID) []Named { +// References returns a slice of references to the given ID. The slice +// will be nil if there are no references to this ID. +func (store *store) References(id digest.Digest) []Named { store.mu.RLock() defer store.mu.RUnlock() @@ -240,8 +239,8 @@ func (store *store) ReferencesByName(ref Named) []Association { } associations = append(associations, Association{ - Ref: ref, - ImageID: refID, + Ref: ref, + ID: refID, }) } diff --git a/reference/store_test.go b/reference/store_test.go index a877c55f5840c..dd1d253d8ea13 100644 --- a/reference/store_test.go +++ b/reference/store_test.go @@ -8,11 +8,11 @@ import ( "strings" "testing" - "github.com/docker/docker/image" + "github.com/docker/distribution/digest" ) var ( - saveLoadTestCases = map[string]image.ID{ + saveLoadTestCases = map[string]digest.Digest{ "registry:5000/foobar:HEAD": "sha256:470022b8af682154f57a2163d030eb369549549cba00edc69e1b99b46bb924d6", "registry:5000/foobar:alternate": "sha256:ae300ebc4a4f00693702cfb0a5e0b7bc527b353828dc86ad09fb95c8a681b793", "registry:5000/foobar:latest": "sha256:6153498b9ac00968d71b66cca4eac37e990b5f9eb50c26877eb8799c8847451b", @@ -115,9 +115,9 @@ func TestAddDeleteGet(t *testing.T) { t.Fatalf("error creating tag store: %v", err) } - testImageID1 := image.ID("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9c") - testImageID2 := image.ID("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9d") - testImageID3 := image.ID("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9e") + testImageID1 := digest.Digest("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9c") + testImageID2 := digest.Digest("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9d") + testImageID3 := digest.Digest("sha256:9655aef5fd742a1b4e1b7b163aa9f1c76c186304bf39102283d80927c916ca9e") // Try adding a reference with no tag or digest nameOnly, err := WithName("username/repo") @@ -276,19 +276,19 @@ func TestAddDeleteGet(t *testing.T) { if associations[0].Ref.String() != ref3.String() { t.Fatalf("unexpected reference: %v", associations[0].Ref.String()) } - if associations[0].ImageID != testImageID1 { + if associations[0].ID != testImageID1 { t.Fatalf("unexpected reference: %v", associations[0].Ref.String()) } if associations[1].Ref.String() != ref1.String() { t.Fatalf("unexpected reference: %v", associations[1].Ref.String()) } - if associations[1].ImageID != testImageID1 { + if associations[1].ID != testImageID1 { t.Fatalf("unexpected reference: %v", associations[1].Ref.String()) } if associations[2].Ref.String() != ref2.String() { t.Fatalf("unexpected reference: %v", associations[2].Ref.String()) } - if associations[2].ImageID != testImageID2 { + if associations[2].ID != testImageID2 { t.Fatalf("unexpected reference: %v", associations[2].Ref.String()) } @@ -331,7 +331,7 @@ func TestInvalidTags(t *testing.T) { if err != nil { t.Fatalf("error creating tag store: %v", err) } - id := image.ID("sha256:470022b8af682154f57a2163d030eb369549549cba00edc69e1b99b46bb924d6") + id := digest.Digest("sha256:470022b8af682154f57a2163d030eb369549549cba00edc69e1b99b46bb924d6") // sha256 as repo name ref, err := ParseNamed("sha256:abc")