Unpack args a layer higher

src/python/grpcio_tests/tests_py3_only/interop/xds_interop_client.py

@@ -165,10 +165,10 @@ def _cancel_all_rpcs(futures: Mapping[int, grpc.Future]) -> None:
         future.cancel()
 
 
-def _run_single_channel(args: argparse.Namespace):
+def _run_single_channel(qps: int, server: str, rpc_timeout_sec: int, print_response: bool):
     global _global_rpc_id  # pylint: disable=global-statement
-    duration_per_query = 1.0 / float(args.qps)
+    duration_per_query = 1.0 / float(qps)
-    with grpc.insecure_channel(args.server) as channel:
+    with grpc.insecure_channel(server) as channel:
         stub = test_pb2_grpc.TestServiceStub(channel)
         futures: Dict[int, grpc.Future] = {}
         while not _stop_event.is_set():
@@ -178,8 +178,8 @@ def _run_single_channel(args: argparse.Namespace):
                 _global_rpc_id += 1
             start = time.time()
             end = start + duration_per_query
-            _start_rpc(request_id, stub, float(args.rpc_timeout_sec), futures)
+            _start_rpc(request_id, stub, float(rpc_timeout_sec), futures)
-            _remove_completed_rpcs(futures, args.print_response)
+            _remove_completed_rpcs(futures, print_response)
             logger.debug(f"Currently {len(futures)} in-flight RPCs")
             now = time.time()
             while now < end:
@@ -193,7 +193,7 @@ def _run(args: argparse.Namespace) -> None:
     global _global_server  # pylint: disable=global-statement
     channel_threads: List[threading.Thread] = []
     for i in range(args.num_channels):
-        thread = threading.Thread(target=_run_single_channel, args=(args,))
+        thread = threading.Thread(target=_run_single_channel, args=(args.qps, args.server, args.rpc_timeout_sec, args.print_response,))
         thread.start()
         channel_threads.append(thread)
     _global_server = grpc.server(futures.ThreadPoolExecutor())