Reset attempt counter

[jc211]

Hi,
Thank you for the great library. I was wondering if there was a way to reset the attempt counter if a certain amount of time has passed with no error.

[hynek]

What exactly do you mean? Either there's a misunderstanding or you've found an incredible bug in stamina.

[jc211]

Sorry its probably a misunderstanding on my part. Lets say my function is decorated with attempts=3 and it raises an error once. After the error, it succeeds on a retry. Does that mean I'm down to only 2 more attempts? Or is it the case that as soon as f succeeds, the attempts go back to 3?

[hynek]

please report if it's otherwise :P

[jc211]

Sorry to open this up again - but the behaviour Im seeing is that if I call function foo() and it fails 3 times, the function will exit - which ofcourse is precisely what the retry behaviour says it will do. For example:

foo started
foo failed
foo restarted
foo failed
foo restarted
foo failed
Error

My question was, is there a way to reset the attempt counter if the time between failures is greater than some duration X. So if my function fails twice within an hour, then it doesnt fail for the next 10 hours, I want it retry 3 times again. If however in one hour, it fails 3 times, it should raise an error.

[hynek]

Ah, could it be that you're using the decorator on a long-running function like a job queue or something?

[jc211]

Yes its a long running function exactly. I want it to be resilient to errors but also die if there are too many in a row.

[hynek]

Hm yeah, so your use-case is not a good fit for a package like stamina. What you want is s a pattern that I would call supervision. That's a different kind of logic.

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Essentially, what you want is a while loop that restarts your function and keeps track of crashes per time unit. The tricky part is really to decide how many is too many.