Integrate "tempfile_service" into "ray.node.Node" (#3953)

python/ray/workers/default_worker.py

@@ -7,9 +7,10 @@ import traceback
 
 import ray
 import ray.actor
+import ray.node
 import ray.ray_constants as ray_constants
-import ray.tempfile_services as tempfile_services
 import ray.utils
+from ray.parameter import RayParams
 
 parser = argparse.ArgumentParser(
     description=("Parse addresses for the worker "
@@ -70,9 +71,19 @@ if __name__ == "__main__":
 
     ray.utils.setup_logger(args.logging_level, args.logging_format)
 
-    # Override the temporary directory.
-    tempfile_services.set_temp_root(args.temp_dir)
+    ray_params = RayParams(
+        node_ip_address=args.node_ip_address,
+        redis_address=args.redis_address,
+        redis_password=args.redis_password,
+        plasma_store_socket_name=args.object_store_name,
+        raylet_socket_name=args.raylet_name,
+        temp_dir=args.temp_dir)
 
+    node = ray.node.Node(
+        ray_params, head=False, shutdown_at_exit=False, connect_only=True)
+    ray.worker._global_node = node
+
+    # TODO(suquark): Use "node" as the input of "connect".
     ray.worker.connect(
         info, redis_password=args.redis_password, mode=ray.WORKER_MODE)