diff --git a/csst_common/pipeline.py b/csst_common/pipeline.py
index 6d0a3273aef14e572dcf0ba819450d47b4e341c7..d1dd73e9d665c369a12214c3f70280e8e0f0669e 100644
--- a/csst_common/pipeline.py
+++ b/csst_common/pipeline.py
@@ -209,6 +209,7 @@ class Pipeline:
     @staticmethod
     def dump_oss_file(rpath: str, lpath: str) -> str:
         """Copy OSS file `file_src` to `file_dist`."""
+        print(f"rpath={rpath}, lpath={lpath}")
         s3_fs.get(rpath, lpath)
         assert os.path.exists(lpath), f"Failed to dump OSS file {rpath} to {lpath}!"
         return lpath
@@ -232,14 +233,14 @@ class Pipeline:
         """Create new file in output directory."""
         return os.path.join(self.dir_output, file_name)
 
-    @staticmethod
-    def dump_file(remote_file_path: str, local_file_path: str = None) -> str:
+    def dump_file(self, remote_file_path: str, local_file_path: str = None) -> str:
         """Copy file `remote_file_path` to `local_file_path`."""
         is_oss = remote_file_path.__contains__(":")
+        self.logger.info(f"Dumping file: {remote_file_path} -> {local_file_path}")
         if is_oss:
-            local_file_path = Pipeline.dump_oss_file(remote_file_path, local_file_path)
+            local_file_path = self.dump_oss_file(remote_file_path, local_file_path)
         else:
-            local_file_path = Pipeline.copy_nas_file(remote_file_path, local_file_path)
+            local_file_path = self.copy_nas_file(remote_file_path, local_file_path)
         return local_file_path
 
     # abspath