imbajin commented on code in PR #351:
URL: https://github.com/apache/hugegraph-ai/pull/351#discussion_r3338177842


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hugegraph-llm/src/hugegraph_llm/api/graph_api.py:
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@@ -0,0 +1,68 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+import json
+
+from fastapi import APIRouter, HTTPException, status
+
+from hugegraph_llm.api.models.rag_requests import GraphConfigRequest, 
GraphExtractRequest
+from hugegraph_llm.config import huge_settings, prompt
+from hugegraph_llm.flows import FlowName
+from hugegraph_llm.flows.scheduler import SchedulerSingleton
+from hugegraph_llm.utils.log import log
+
+
+def _apply_graph_config(client_config: GraphConfigRequest | None) -> None:
+    if client_config:
+        huge_settings.graph_url = client_config.url

Review Comment:
   ‼️ **Keep graph config request-local**
   
   Evidence: `_apply_graph_config()` writes `client_config` into the 
module-level `huge_settings` before scheduling. Impact: one `/graph/extract` 
request can leave its HugeGraph URL/name/credentials active for later requests 
with no `client_config`, and concurrent requests can overwrite each other. 
Please pass these settings through request-local flow/client construction or 
restore them in a request-scoped context so this endpoint does not mutate 
shared process state.



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