Use with Sentry

[filwaline]

I am very interested in this library and have read some related blogs, such as https://sobolevn.me/2019/02/python-exceptions-considered-an-antipattern. If I want to use returns with Sentry, do you have any ideas on how to do it? Should I wrap everything with Result (@safe everywhere) and handle them until they return to the entrypoint, using .alt report to Sentry?

For example:

def some_complex_compute(data:int) -> ResultE[int]:
    ...

def entrypoint():
    res = some_complex_compute(0)
    fin = res.alt(sentryable)
    return fin

Or should I just leave some exceptions raised so that Sentry can catch them and report?

[thepabloaguilar]

That's an interesting question! It depends on how your application is structured, for an Web API for example you could have an interceptor/middleware to check that and if there's an exception and then make what you want with that info. But in your case it's something that's expected by a third party code where you don't have the ability to extend/modify it so just throw the exception at the end of our program!

from returns.functions import raise_exception
from returns.result import ResultE

def some_complex_compute(data:int) -> ResultE[int]:
    ...

def entrypoint() -> int:
    return (
        some_complex_compute(0)
        .alt(raise_exception)
        .unwrap()
    )

[thepabloaguilar]

Closing issue @filwaline, feel free to open it again if you consider the question is not answered!