problems with creating/streaming result archives: FileNotFoundError: [Errno 2] No such file or directory: '/tmp/tmptw7ew4ln/results-*.tar.gz'

[TomasTomecek]

We have a ton of these tracebacks in the logs:

[2024-08-16 15:03:49 +0000] [7] [ERROR] Exception in ASGI application
Traceback (most recent call last):
  File "/usr/lib/python3.12/site-packages/uvicorn/protocols/http/httptools_impl.py", line 426, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/uvicorn/middleware/proxy_headers.py", line 84, in __call__
    return await self.app(scope, receive, send)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/fastapi/applications.py", line 1054, in __call__
    await super().__call__(scope, receive, send)
  File "/usr/lib/python3.12/site-packages/starlette/applications.py", line 123, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/usr/lib/python3.12/site-packages/starlette/middleware/errors.py", line 186, in __call__
    raise exc
  File "/usr/lib/python3.12/site-packages/starlette/middleware/errors.py", line 164, in __call__
    await self.app(scope, receive, _send)
  File "/usr/lib/python3.12/site-packages/starlette/middleware/exceptions.py", line 65, in __call__
    await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  File "/usr/lib/python3.12/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/usr/lib/python3.12/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/usr/lib/python3.12/site-packages/starlette/routing.py", line 754, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/usr/lib/python3.12/site-packages/starlette/routing.py", line 774, in app
    await route.handle(scope, receive, send)
  File "/usr/lib/python3.12/site-packages/starlette/routing.py", line 295, in handle
    await self.app(scope, receive, send)
  File "/usr/lib/python3.12/site-packages/starlette/routing.py", line 77, in app
    await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  File "/usr/lib/python3.12/site-packages/starlette/_exception_handler.py", line 64, in wrapped_app
    raise exc
  File "/usr/lib/python3.12/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
    await app(scope, receive, sender)
  File "/usr/lib/python3.12/site-packages/starlette/routing.py", line 75, in app
    await response(scope, receive, send)
  File "/usr/lib/python3.12/site-packages/starlette/responses.py", line 258, in __call__
    async with anyio.create_task_group() as task_group:
  File "/usr/lib/python3.12/site-packages/anyio/_backends/_asyncio.py", line 597, in __aexit__
    raise exceptions[0]
  File "/usr/lib/python3.12/site-packages/starlette/responses.py", line 261, in wrap
    await func()
  File "/usr/lib/python3.12/site-packages/starlette/responses.py", line 250, in stream_response
    async for chunk in self.body_iterator:
  File "/usr/lib/python3.12/site-packages/starlette/concurrency.py", line 65, in iterate_in_threadpool
    yield await anyio.to_thread.run_sync(_next, as_iterator)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/anyio/to_thread.py", line 33, in run_sync
    return await get_asynclib().run_sync_in_worker_thread(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/anyio/_backends/_asyncio.py", line 877, in run_sync_in_worker_thread
    return await future
           ^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/anyio/_backends/_asyncio.py", line 807, in run
    result = context.run(func, *args)
             ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/starlette/concurrency.py", line 54, in _next
    return next(iterator)
           ^^^^^^^^^^^^^^
  File "/src/backend/src/api.py", line 350, in iter_large_file
    with open(file_name, mode="rb") as file:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/tmptw7ew4ln/results-1723820620.tar.gz'

[TomasTomecek]

Unfortunately, the downloading is now broken :/