From bacd7d65bc2a0854397e8a78619725997e19349d Mon Sep 17 00:00:00 2001
From: Eugene Yurtsev <eyurtsev@gmail.com>
Date: Fri, 6 Sep 2024 11:26:01 -0400
Subject: [PATCH] x

---
 langserve/api_handler.py | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/langserve/api_handler.py b/langserve/api_handler.py
index 329e8a76..9f9d75cb 100644
--- a/langserve/api_handler.py
+++ b/langserve/api_handler.py
@@ -181,9 +181,6 @@ async def _unpack_request_config(
             credentials to a runnable. The RunnableConfig is presented in its
             dictionary form. Note that only keys in `config_keys` will be
             modifiable by this function.
-        config_keys: keys that are accepted by the server. This is used to
-            make sure that the server doesn't allow any keys that it doesn't want
-            to allow.
     """
     config_dicts = []
     for config in client_sent_configs:
@@ -195,7 +192,6 @@ async def _unpack_request_config(
             config_dicts.append(model(**config).dict())
         else:
             raise TypeError(f"Expected a string, dict or BaseModel got {type(config)}")
-
     config = merge_configs(*config_dicts)
     if "configurable" in config and config["configurable"]:
         if "configurable" not in config_keys:
@@ -232,7 +228,7 @@ def _update_config_with_defaults(
     """Set up some baseline configuration for the underlying runnable."""
 
     # Currently all defaults are non-overridable
-    overridable_default_config: RunnableConfig = {}
+    overridable_default_config = RunnableConfig()
 
     metadata = {
         "__useragent": request.headers.get("user-agent"),
@@ -260,10 +256,11 @@ def _update_config_with_defaults(
         }
         metadata.update(hosted_metadata)
 
-    non_overridable_default_config: RunnableConfig = {
-        "run_name": run_name,
-        "metadata": metadata,
-    }
+    non_overridable_default_config = RunnableConfig(
+        run_name=run_name,
+        metadata=metadata,
+    )
+
     # merge_configs is last-writer-wins, so we specifically pass in the
     # overridable configs first, then the user provided configs, then
     # finally the non-overridable configs
@@ -272,6 +269,7 @@ def _update_config_with_defaults(
         incoming_config,
         non_overridable_default_config,
     )
+
     # run_id may have been set by user (and accepted by server) or
     # it may have been by the user on the server request path.
     # If it's not set, we'll generate a new one.
@@ -805,8 +803,6 @@ async def invoke(
                 with any other configuration. It's the last to be written, so
                 it will override any other configuration.
         """
-        from langchain_core.runnables.config import var_child_runnable_config
-
         # We do not use the InvokeRequest model here since configurable runnables
         # have dynamic schema -- so the validation below is a bit more involved.
         config, input_ = await self._get_config_and_input(