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[Bugfix][Router] Run KvawareRouter /tokenize fallback in executor to avoid blocking event loop #1069

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[Bugfix][Router] Run KvawareRouter /tokenize fallback in executor to avoid blocking event loop #1069

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8137dd8
fix: Run KvawareRouter /tokenize fallback in executor to avoid blocki…
Aug 29, 2026
2a62aa4
fix: Address review feedback — use shared aiohttp session for /tokeni…
Aug 29, 2026
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10 changes: 7 additions & 3 deletions src/vllm_router/routers/routing_logic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -402,10 +402,14 @@ async def route_request(
"model": endpoints[0].model_names[0],
"prompt": request_json.get("prompt", ""),
}
body = requests.post(
# Use the shared aiohttp session so connections are reused and
# the event loop is not blocked (mirrors route_general_request).
client = request.app.state.aiohttp_client_wrapper()
async with client.post(
remote_url, headers=headers, json=data, timeout=10
).json()
token_ids = body["tokens"]
) as response:
response_json = await response.json()
token_ids = response_json["tokens"]

event_id = "Lookup" + str(uuid.uuid4())
msg = LookupMsg(tokens=token_ids, event_id=event_id)
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