Django Channels redis backend more explicit errors

[Miguel Rosales]

Hi, I recently came across a situation my redis backend was improperly configured

and I got this log. I thought the problem was related to a blocked port or something related to the container/image I was using because of the OSError: [Errno 22] Invalid argument, I think it would be more obvious to throw an ImproperlyConfigured exception upon having a hosts blank or None. What do you think?

thanks

2022-02-03T21:07:13.513556300Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/channels_redis/core.py", line 380, in _brpop_with_clean
2022-02-03T21:07:13.513575300Z apis_message-service.1.svevr04rkdce@docker-desktop    |     async with self.connection(index) as connection:
2022-02-03T21:07:13.513605700Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/channels_redis/core.py", line 902, in __aenter__
2022-02-03T21:07:13.513626500Z apis_message-service.1.svevr04rkdce@docker-desktop    |     self.conn = await self.pool.pop()
2022-02-03T21:07:13.513645800Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/channels_redis/core.py", line 93, in pop
2022-02-03T21:07:13.513664700Z apis_message-service.1.svevr04rkdce@docker-desktop    |     conn = await self.create_conn(loop)
2022-02-03T21:07:13.513684800Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/channels_redis/core.py", line 79, in create_conn
2022-02-03T21:07:13.513704600Z apis_message-service.1.svevr04rkdce@docker-desktop    |     return await aioredis.create_redis_pool(**kwargs)
2022-02-03T21:07:13.513724000Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/aioredis/commands/__init__.py", line 188, in create_redis_pool
2022-02-03T21:07:13.513746300Z apis_message-service.1.svevr04rkdce@docker-desktop    |     pool = await create_pool(address, db=db,
2022-02-03T21:07:13.513768800Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/aioredis/pool.py", line 58, in create_pool
2022-02-03T21:07:13.513792800Z apis_message-service.1.svevr04rkdce@docker-desktop    |     await pool._fill_free(override_min=False)
2022-02-03T21:07:13.513815200Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/aioredis/pool.py", line 383, in _fill_free
2022-02-03T21:07:13.513839000Z apis_message-service.1.svevr04rkdce@docker-desktop    |     conn = await self._create_new_connection(self._address)
2022-02-03T21:07:13.513869600Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/aioredis/connection.py", line 121, in create_connection
2022-02-03T21:07:13.513893800Z apis_message-service.1.svevr04rkdce@docker-desktop    |     reader, writer = await asyncio.wait_for(open_unix_connection(
2022-02-03T21:07:13.513913600Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/asyncio/tasks.py", line 408, in wait_for
2022-02-03T21:07:13.513993100Z apis_message-service.1.svevr04rkdce@docker-desktop    |     return await fut
2022-02-03T21:07:13.514013700Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/site-packages/aioredis/stream.py", line 39, in open_unix_connection
2022-02-03T21:07:13.514032100Z apis_message-service.1.svevr04rkdce@docker-desktop    |     transport, _ = await get_event_loop().create_unix_connection(
2022-02-03T21:07:13.514051900Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/asyncio/unix_events.py", line 254, in create_unix_connection
2022-02-03T21:07:13.514070800Z apis_message-service.1.svevr04rkdce@docker-desktop    |     await self.sock_connect(sock, path)
2022-02-03T21:07:13.514091300Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/asyncio/selector_events.py", line 502, in sock_connect
2022-02-03T21:07:13.514112500Z apis_message-service.1.svevr04rkdce@docker-desktop    |     return await fut
2022-02-03T21:07:13.514133700Z apis_message-service.1.svevr04rkdce@docker-desktop    |   File "/usr/local/lib/python3.10/asyncio/selector_events.py", line 512, in _sock_connect
2022-02-03T21:07:13.514153800Z apis_message-service.1.svevr04rkdce@docker-desktop    |     sock.connect(address)
2022-02-03T21:07:13.514173200Z apis_message-service.1.svevr04rkdce@docker-desktop    | OSError: [Errno 22] Invalid argument

[Adam Johnson]

Hi!

I think you've found the wrong mailing list for this post. This mailing list is for discussing the development of Django itself, not for support using Django. This means the discussions of bugs and features in Django itself, rather than in your code using it. People on this list are unlikely to answer your support query with their limited time and energy.

For support, please follow the "Getting Help" page: https://docs.djangoproject.com/en/stable/faq/help/ . This will help you find people who are willing to support you, and to ask your question in a way that makes it easy for them to answer.

Thanks for your understanding and all the best,

Adam

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