uranusjr commented on a change in pull request #16792:
URL: https://github.com/apache/airflow/pull/16792#discussion_r698291886



##########
File path: airflow/providers/sftp/operators/sftp.py
##########
@@ -134,29 +176,81 @@ def execute(self, context: Any) -> str:
 
             with self.ssh_hook.get_conn() as ssh_client:
                 sftp_client = ssh_client.open_sftp()
-                if self.operation.lower() == SFTPOperation.GET:
-                    local_folder = os.path.dirname(self.local_filepath)
-                    if self.create_intermediate_dirs:
-                        Path(local_folder).mkdir(parents=True, exist_ok=True)
-                    file_msg = f"from {self.remote_filepath} to 
{self.local_filepath}"
-                    self.log.info("Starting to transfer %s", file_msg)
-                    sftp_client.get(self.remote_filepath, self.local_filepath)
-                else:
-                    remote_folder = os.path.dirname(self.remote_filepath)
-                    if self.create_intermediate_dirs:
-                        _make_intermediate_dirs(
-                            sftp_client=sftp_client,
-                            remote_directory=remote_folder,
+                if self.local_filepath and self.remote_filepath:
+                    if isinstance(self.local_filepath, list) and 
isinstance(self.remote_filepath, str):
+                        for file_path in self.local_filepath:
+                            local_folder = os.path.dirname(file_path)
+                            local_file = os.path.basename(file_path)
+                            file_msg = file_path
+                            self._transfer(sftp_client, local_folder, 
local_file, self.remote_filepath)
+                    elif isinstance(self.remote_filepath, list) and 
isinstance(self.local_filepath, str):
+                        for file_path in self.remote_filepath:
+                            remote_folder = os.path.dirname(file_path)
+                            remote_file = os.path.basename(file_path)
+                            file_msg = file_path
+                            self._transfer(sftp_client, self.local_filepath, 
remote_file, remote_folder)
+                    elif isinstance(self.remote_filepath, str) and 
isinstance(self.local_filepath, str):
+                        local_folder = os.path.dirname(self.local_filepath)
+                        file_msg = self.local_filepath
+                        self._transfer(
+                            sftp_client,
+                            local_folder,
+                            self.local_filepath,
+                            self.remote_filepath,
+                            only_file=True,
                         )
-                    file_msg = f"from {self.local_filepath} to 
{self.remote_filepath}"
-                    self.log.info("Starting to transfer file %s", file_msg)
-                    sftp_client.put(self.local_filepath, self.remote_filepath, 
confirm=self.confirm)
+                elif self.local_folder and self.remote_folder:
+                    if self.operation.lower() == SFTPOperation.PUT:
+                        files_list = 
self._search_files(os.listdir(self.local_folder))
+                        for file in files_list:
+                            local_file = os.path.basename(file)
+                            file_msg = file
+                            self._transfer(sftp_client, self.local_folder, 
local_file, self.remote_folder)
+                    elif self.operation.lower() == SFTPOperation.GET:
+                        files_list = 
self._search_files(sftp_client.listdir(self.remote_folder))
+                        for file in files_list:
+                            remote_file = ntpath.basename(file)

Review comment:
       I think this should be `os.path.basename` like in the `PUT` block.

##########
File path: airflow/providers/sftp/operators/sftp.py
##########
@@ -88,6 +124,9 @@ def __init__(
         remote_host=None,
         local_filepath=None,
         remote_filepath=None,
+        local_folder=None,
+        remote_folder=None,
+        regexp_mask=None,

Review comment:
       I am really not fond of this argument list since it’s too easy to pass 
in nonsensical combinations e.g.
   
   ```python
   SFTPOperator(
       local_filepath="/my/file",
       local_folder="/my/dir",
   )
   ```
   
   But I understand this is not easy to change the arguments due to 
compatibility considerations.
   
   Perhapes what we should do is to introduce a separate operator (say 
`SFTPBatchOperator`) to handle the new feature, instead of bolting it onto the 
existing one.




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