feat(infra): HeadObject return object not found error if object not exist

backend/infra/contract/storage/storage.go

@@ -18,10 +18,15 @@ package storage
 
 import (
 	"context"
+	"errors"
 	"io"
 	"time"
 )
 
+var (
+	ErrObjectNotFound = errors.New("object not found")
+)
+
 //go:generate  mockgen -destination ../../../internal/mock/infra/contract/storage/storage_mock.go -package mock -source storage.go Factory
 type Storage interface {
 	// PutObject puts the object with the specified key.

backend/infra/impl/storage/minio/minio.go

@@ -310,7 +310,7 @@ func (m *minioClient) HeadObject(ctx context.Context, objectKey string, opts ...
 	stat, err := m.client.StatObject(ctx, m.bucketName, objectKey, minio.StatObjectOptions{})
 	if err != nil {
 		if minio.ToErrorResponse(err).Code == "NoSuchKey" {
-			return nil, nil
+			return nil, storage.ErrObjectNotFound
 		}
 
 		return nil, fmt.Errorf("HeadObject failed for key %s: %w", objectKey, err)

backend/infra/impl/storage/s3/s3.go

@@ -375,7 +375,7 @@ func (t *s3Client) HeadObject(ctx context.Context, objectKey string, opts ...sto
 	if err != nil {
 		var nsk *types.NotFound
 		if errors.As(err, &nsk) {
-			return nil, nil
+			return nil, storage.ErrObjectNotFound
 		}
 		return nil, err
 	}

backend/infra/impl/storage/tos/tos.go

@@ -383,7 +383,7 @@ func (t *tosClient) HeadObject(ctx context.Context, objectKey string, opts ...st
 	if err != nil {
 		if serverErr, ok := err.(*tos.TosServerError); ok {
 			if serverErr.StatusCode == http.StatusNotFound {
-				return nil, nil
+				return nil, storage.ErrObjectNotFound
 			}
 		}
 		return nil, err