[feature request] Print all config items in server config command, instead of showing .env file contents about dispatch HOT 3 CLOSED

Interesting. We typically only use .env files for configuration show we haven't come across this issue. Under the hood we just use starlette config, which does read from the envvars but perhaps not in this context?

https://www.starlette.io/config/

from dispatch.

When dispatch is brought up via docker-compose, .env environment file is parsed by docker-compose
https://github.com/Netflix/dispatch-docker/blob/master/docker-compose.yml#L24
then those variables are given to each docker container as environment variables.

Those environment variables are stored in config.environ
https://github.com/encode/starlette/blob/master/starlette/config.py#L55
while .env file parsed by dispatch (or its underlying starlette) are stored in config.file_values.

You use only latter one, so show_config() is implemented to support that case only.

But that's not the main point. Regardless how .env contents are given to dispatch, my feature request is to show parsed config, not to show what are given.

One of typical use case is to detect typo in variable name. If I made a typo in variable name but it has default value (or, the variable is referenced by config(..., default=...)), I expect to see the default value on show_config(), so that I could find that there are some problems in config. Current code displays just the typo as-is, then I'll observe unexpected behavior, then I'm supposed to dig deeper to see if it's bug of program or misconfiguration of program.

from dispatch.

I've put together #264... I think it's kind of hacky but it's not terrible. Please let me know if that satisfies your use case.

from dispatch.