Perf: Enhance timeout handling. (#8826)

### What problem does this PR solve?


### Type of change

- [x] Performance Improvement

graphrag/general/index.py

@@ -20,6 +20,7 @@ import trio
 
 from api import settings
 from api.utils import get_uuid
+from api.utils.api_utils import timeout
 from graphrag.light.graph_extractor import GraphExtractor as LightKGExt
 from graphrag.general.graph_extractor import GraphExtractor as GeneralKGExt
 from graphrag.general.community_reports_extractor import CommunityReportsExtractor
@@ -123,6 +124,7 @@ async def run_graphrag(
     return
 
 
+@timeout(60*60*2)
 async def generate_subgraph(
     extractor: Extractor,
     tenant_id: str,
@@ -194,6 +196,8 @@ async def generate_subgraph(
     callback(msg=f"generated subgraph for doc {doc_id} in {now - start:.2f} seconds.")
     return subgraph
 
+
+@timeout(60*3)
 async def merge_subgraph(
     tenant_id: str,
     kb_id: str,
@@ -225,6 +229,7 @@ async def merge_subgraph(
     return new_graph
 
 
+@timeout(60*60)
 async def resolve_entities(
     graph,
     subgraph_nodes: set[str],
@@ -250,6 +255,7 @@ async def resolve_entities(
     callback(msg=f"Graph resolution done in {now - start:.2f}s.")
 
 
+@timeout(60*30)
 async def extract_community(
     graph,
     tenant_id: str,