removed storage changes

Signed-off-by: Xiaoxuan Wang <wangxiaoxuan119@gmail.com>

content/oci/oci.go

@@ -485,17 +485,22 @@ func (s *Store) GC(ctx context.Context) error {
 			return err
 		}
 		// skip the directories
-		if !info.IsDir() {
-			alg := filepath.Base(filepath.Dir(path))
-			blobDigest, err := digest.Parse(fmt.Sprintf("%s:%s", alg, info.Name()))
+		if info.IsDir() {
+			return nil
+		}
+		alg := filepath.Base(filepath.Dir(path))
+		blobDigest, err := digest.Parse(fmt.Sprintf("%s:%s", alg, info.Name()))
+		if err != nil {
+			return err
+		}
+		if exists := s.graph.Exists(blobDigest); !exists {
+			// remove the blob from storage if it does not exist in Store
+			err = os.Remove(path)
 			if err != nil {
-				return err
-			}
-			if exists := s.graph.Exists(blobDigest); !exists {
-				// remove the blob from storage if it does not exist in Store
-				if err := s.storage.deleteByDigest(ctx, blobDigest); err != nil {
-					return err
+				if errors.Is(err, fs.ErrNotExist) {
+					return fmt.Errorf("%s: %w", blobDigest, errdef.ErrNotFound)
 				}
+				return err
 			}
 		}
 		return nil

content/oci/storage.go

@@ -25,7 +25,6 @@ import (
 	"path/filepath"
 	"sync"
 
-	"github.com/opencontainers/go-digest"
 	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
 	"oras.land/oras-go/v2/errdef"
 	"oras.land/oras-go/v2/internal/ioutil"
@@ -110,19 +109,15 @@ func (s *Storage) Push(_ context.Context, expected ocispec.Descriptor, content i
 
 // Delete removes the target from the system.
 func (s *Storage) Delete(ctx context.Context, target ocispec.Descriptor) error {
-	return s.deleteByDigest(ctx, target.Digest)
-}
-
-func (s *Storage) deleteByDigest(ctx context.Context, digest digest.Digest) error {
-	path, err := blobPath(digest)
+	path, err := blobPath(target.Digest)
 	if err != nil {
-		return fmt.Errorf("%s: %w", digest, errdef.ErrInvalidDigest)
+		return fmt.Errorf("%s: %s: %w", target.Digest, target.MediaType, errdef.ErrInvalidDigest)
 	}
 	targetPath := filepath.Join(s.root, path)
 	err = os.Remove(targetPath)
 	if err != nil {
 		if errors.Is(err, fs.ErrNotExist) {
-			return fmt.Errorf("%s: %w", digest, errdef.ErrNotFound)
+			return fmt.Errorf("%s: %s: %w", target.Digest, target.MediaType, errdef.ErrNotFound)
 		}
 		return err
 	}