File-based configuration

Hi there,

Has file-based configuration ever been considered for uvicorn? By that, I mean starting the server via a config file which we contain values for any made available by the uvicorn command.

gunicorn has this feature and I like how the config file is just a plain Python script, which allows to do any sorts of computation (e.g. deriving the number of workers from the number of CPUs). File-based configuration also allows the server config to be version-controlled and written once and for all for a given project.

As an illustration, I imagine that file-based configuration would allow to use:

# config.py
import os
import multiprocessing

host = "0.0.0.0"
port = 5050
workers = 2 * multiprocessing.cpu_count() + 1
log_level = "debug"
reload = not os.environ.get("PRODUCTION")

uvicorn -c config.py app:app

Instead of:

uvicorn --host="0.0.0.0" --port=5050 --workers=4 --log-level=debug --reload app:app

[maquino1985]

Would be great if this was reopened and worked on. I think it’s very helpful with my gunicorn apps, not sure how to configure uvicorn at all if its being run from a docker container pointing to an app (e.g. fastapi) and not run explicitly via the backend

[florimondmanca]

I’ll close this, since I’ve actually been able to do without this very well since I posted this issue. 😃