fix: add build tag and fix API compatibility for release/2.8

Signed-off-by: setoru <setoru127@gmail.com>

Author: setoru

cmd/registry/main.go

@@ -14,6 +14,7 @@ import (
 	_ "github.com/docker/distribution/registry/storage/driver/inmemory"
 	_ "github.com/docker/distribution/registry/storage/driver/middleware/cloudfront"
 	_ "github.com/docker/distribution/registry/storage/driver/middleware/redirect"
+	_ "github.com/docker/distribution/registry/storage/driver/obs"
 	_ "github.com/docker/distribution/registry/storage/driver/oss"
 	_ "github.com/docker/distribution/registry/storage/driver/s3-aws"
 	_ "github.com/docker/distribution/registry/storage/driver/swift"

registry/storage/driver/obs/doc.go

@@ -0,0 +1,4 @@
+// Package obs implements the Huawei OBS Storage driver backend. Support can be
+// enabled by including the "include_obs" build tag.
+package obs
+

registry/storage/driver/obs/obs.go

@@ -1,3 +1,6 @@
+//go:build include_obs
+// +build include_obs
+
 // Package obs provides a storagedriver.StorageDriver implementation to
 // store blobs in HuaweiCloud storage.
 //
@@ -702,9 +705,9 @@ func (d *driver) Delete(ctx context.Context, path string) error {
 				for _, err := range output.Errors {
 					errs = append(errs, errors.New(err.Message))
 				}
-				return storagedriver.Errors{
+				return storagedriver.Error{
 					DriverName: driverName,
-					Errs:       errs,
+					Enclosed:   errors.Join(errs...),
 				}
 			}
 		}
@@ -1007,7 +1010,7 @@ func (w *writer) Size() int64 {
 	return w.size
 }
 
-func (w *writer) Cancel(ctx context.Context) error {
+func (w *writer) Cancel() error {
 	if w.closed {
 		return fmt.Errorf("already closed")
 	} else if w.committed {

registry/storage/driver/obs/obs_test.go

@@ -1,3 +1,6 @@
+//go:build include_obs
+// +build include_obs
+
 package obs
 
 import (