RuntimeError: Event loop is closed

[mikepal2]

Reproduced on 127.0.0.1:8000/?origin=SWB&destination=PVB

INFO: 127.0.0.1:59821 - "POST /api/routeplans HTTP/1.1" 500 Internal Server Error
ERROR: Exception in ASGI application
Traceback (most recent call last):
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\uvicorn\protocols\http\httptools_impl.py", line 419, in run_asgi
result = await app( # type: ignore[func-returns-value]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\uvicorn\middleware\proxy_headers.py", line 84, in call
return await self.app(scope, receive, send)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\fastapi\applications.py", line 1054, in call
await super().call(scope, receive, send)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\applications.py", line 123, in call
await self.middleware_stack(scope, receive, send)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\middleware\errors.py", line 186, in call
raise exc
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\middleware\errors.py", line 164, in call
await self.app(scope, receive, _send)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\middleware\exceptions.py", line 62, in call
await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette_exception_handler.py", line 64, in wrapped_app
raise exc
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette_exception_handler.py", line 53, in wrapped_app
await app(scope, receive, sender)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\routing.py", line 758, in call
await self.middleware_stack(scope, receive, send)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\routing.py", line 778, in app
await route.handle(scope, receive, send)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\routing.py", line 299, in handle
await self.app(scope, receive, send)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\routing.py", line 79, in app
await wrap_app_handling_exceptions(app, request)(scope, receive, send)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette_exception_handler.py", line 64, in wrapped_app
raise exc
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette_exception_handler.py", line 53, in wrapped_app
await app(scope, receive, sender)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\starlette\routing.py", line 74, in app
response = await func(request)
^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\fastapi\routing.py", line 278, in app
raw_response = await run_endpoint_function(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\fastapi\routing.py", line 191, in run_endpoint_function
return await dependant.call(**values)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Mike\Sources\ferry-planner\src\ferry_planner\server.py", line 102, in api_routeplans
await route_plan_builder.make_route_plans(
File "C:\Users\Mike\Sources\ferry-planner\src\ferry_planner\route.py", line 283, in make_route_plans
await self._pre_cache_schedules(routes=routes, options=options)
File "C:\Users\Mike\Sources\ferry-planner\src\ferry_planner\route.py", line 274, in _pre_cache_schedules
await asyncio.gather(*tasks)
File "C:\Users\Mike\Sources\ferry-planner\src\ferry_planner\schedule.py", line 168, in get
schedule = await self.download_schedule(origin_id, destination_id, date=date)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Mike\Sources\ferry-planner\src\ferry_planner\schedule.py", line 194, in download_schedule
return await self._download_schedule_async(origin_id, destination_id, date=date)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Mike\Sources\ferry-planner\src\ferry_planner\schedule.py", line 219, in _download_schedule_async
response = await self._client.get(url)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpx_client.py", line 1801, in get
return await self.request(
^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpx_client.py", line 1574, in request
return await self.send(request, auth=auth, follow_redirects=follow_redirects)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpx_client.py", line 1661, in send
response = await self._send_handling_auth(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpx_client.py", line 1689, in _send_handling_auth
response = await self._send_handling_redirects(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpx_client.py", line 1726, in _send_handling_redirects
response = await self._send_single_request(request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpx_client.py", line 1763, in _send_single_request
response = await transport.handle_async_request(request)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpx_transports\default.py", line 373, in handle_async_request
resp = await self._pool.handle_async_request(req)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpcore_async\connection_pool.py", line 216, in handle_async_request
raise exc from None
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpcore_async\connection_pool.py", line 189, in handle_async_request
await self._close_connections(closing)
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpcore_async\connection_pool.py", line 305, in _close_connections
await connection.aclose()
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpcore_async\connection.py", line 171, in aclose
await self._connection.aclose()
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpcore_async\http11.py", line 265, in aclose
await self._network_stream.aclose()
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\httpcore_backends\anyio.py", line 54, in aclose
await self._stream.aclose()
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\anyio\streams\tls.py", line 202, in aclose
await self.transport_stream.aclose()
File "c:\Users\Mike\Sources\ferry-planner.venv\Lib\site-packages\anyio_backends_asyncio.py", line 1191, in aclose
self._transport.close()
File "C:\Users\Mike\AppData\Local\Programs\Python\Python311\Lib\asyncio\selector_events.py", line 864, in close
self._loop.call_soon(self._call_connection_lost, None)
File "C:\Users\Mike\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 762, in call_soon
self._check_closed()
File "C:\Users\Mike\AppData\Local\Programs\Python\Python311\Lib\asyncio\base_events.py", line 520, in _check_closed
raise RuntimeError('Event loop is closed')
RuntimeError: Event loop is closed

[mikepal2]

could be related
https://stackoverflow.com/questions/61543406/asyncio-run-runtimeerror-event-loop-is-closed

[mikepal2]

more here
https://stackoverflow.com/questions/45600579/asyncio-event-loop-is-closed-when-getting-loop

[mikepal2]

Repro 100% with cache_ahead_days: int = 3
on 127.0.0.1:8000/?origin=SWB&destination=PVB

it has something to do with
[ScheduleDB:ERROR] failed to download schedule: TEX-CMX:2024-06-23
ScheduleDownloadError('error downloading https://www.bcferries.com/routes-fares/schedules/seasonal/TEX-CMX?&scheduleDate=06/23/2024: Date 2024-06-23 00:00:00 is out of seasonal schedules range')

once i added workaround for this schedule everything started to work fine

but we have to fix the underlying cause to prevent other download errors (timeouts?) to crash server