fix upload threads setting

b2/_internal/console_tool.py

@@ -737,6 +737,7 @@ def _set_threads_from_args(self, args):
         # FIXME: This is using deprecated API. It should be be replaced when moving to b2sdk apiver 3.
         #        There is `max_download_workers` param in B2Api constructor for this.
         self.api.services.download_manager.set_thread_pool_size(threads)
+        self.api.services.upload_manager.set_thread_pool_size(threads)
 
 
 class _TqdmCloser:

changelog.d/+upload_threads.fixed.md

@@ -0,0 +1 @@
+Fix `--threads` option being silently ignored in upload commands.

test/unit/console_tool/test_upload_file.py

@@ -125,3 +125,33 @@ def test_upload_file__stdin(b2_cli, bucket, tmpdir, mock_stdin):
         remove_version=True,
         expected_part_of_stdout=expected_stdout,
     )
+
+
+def test_upload_file__threads_setting(b2_cli, bucket, tmp_path):
+    """Test upload_file supports setting number of threads"""
+    filename = 'file1.txt'
+    content = 'hello world'
+    local_file1 = tmp_path / 'file1.txt'
+    local_file1.write_text(content)
+
+    expected_json = {
+        "action": "upload",
+        "contentSha1": "2aae6c35c94fcfb415dbe95f408b9ce91ee846ed",
+        "fileInfo": {
+            "src_last_modified_millis": f"{local_file1.stat().st_mtime_ns // 1000000}"
+        },
+        "fileName": filename,
+        "size": len(content),
+    }
+    b2_cli.run(
+        [
+            'upload-file', '--noProgress', 'my-bucket', '--threads', '66',
+            str(local_file1), 'file1.txt'
+        ],
+        expected_json_in_stdout=expected_json,
+        remove_version=True,
+    )
+
+    # b2sdk does not expose the thread pool size, so this test is very much expected to be changed when
+    # the internal implementation of the upload manager changes
+    assert b2_cli.b2_api.services.upload_manager._thread_pool._max_workers == 66