update dal close

dal/dal.go

@@ -122,8 +122,12 @@ func New(ctx context.Context, cred string, minioClient *minio.Client) (*DAL, err
 	}, nil
 }
 
-func (d *DAL) Close() {
-	d.conn.Close()
+func (d *DAL) Close(ctx context.Context) error {
+	err := d.conn.Close()
+	if err != nil {
+		return err
+	}
+	return nil
 }
 
 type AmoDal struct {