change: update model path in local mode (aws#4296)

* Update model path in local mode

* Add test

src/sagemaker/local/image.py

@@ -430,6 +430,7 @@ def retrieve_artifacts(self, compose_data, output_data_config, job_name):
                 output_data_config["S3OutputPath"],
                 job_name,
                 self.sagemaker_session,
+                prefix="output",
             )
 
         _delete_tree(model_artifacts)

src/sagemaker/local/utils.py

@@ -53,7 +53,7 @@ def copy_directory_structure(destination_directory, relative_path):
     os.makedirs(destination_directory, relative_path)
 
 
-def move_to_destination(source, destination, job_name, sagemaker_session):
+def move_to_destination(source, destination, job_name, sagemaker_session, prefix=""):
     """Move source to destination.
 
     Can handle uploading to S3.
@@ -64,6 +64,8 @@ def move_to_destination(source, destination, job_name, sagemaker_session):
         job_name (str): SageMaker job name.
         sagemaker_session (sagemaker.Session): a sagemaker_session to interact
             with S3 if needed
+        prefix (str, optional): the directory on S3 used to save files, default
+            to the root of  ``destination``
 
     Returns:
         (str): destination URI
@@ -75,7 +77,7 @@ def move_to_destination(source, destination, job_name, sagemaker_session):
         final_uri = destination
     elif parsed_uri.scheme == "s3":
         bucket = parsed_uri.netloc
-        path = s3.s3_path_join(parsed_uri.path, job_name)
+        path = s3.s3_path_join(parsed_uri.path, job_name, prefix)
         final_uri = s3.s3_path_join("s3://", bucket, path)
         sagemaker_session.upload_data(source, bucket, path)
     else:

tests/unit/sagemaker/local/test_local_utils.py

@@ -66,6 +66,18 @@ def test_move_to_destination_s3(recursive_copy):
     sms.upload_data.assert_called_with("/tmp/data", "bucket", "job")
 
 
+@patch("shutil.rmtree", Mock())
+def test_move_to_destination_s3_with_prefix():
+    sms = Mock(
+        settings=SessionSettings(),
+    )
+    uri = sagemaker.local.utils.move_to_destination(
+        "/tmp/data", "s3://bucket/path", "job", sms, "foo_prefix"
+    )
+    sms.upload_data.assert_called_with("/tmp/data", "bucket", "path/job/foo_prefix")
+    assert uri == "s3://bucket/path/job/foo_prefix"
+
+
 def test_move_to_destination_illegal_destination():
     with pytest.raises(ValueError):
         sagemaker.local.utils.move_to_destination("/tmp/data", "ftp://ftp/in/2018", "job", None)