HushError

If you use WebError, you may run into situations where a failure of one or more systems will result in flood of notifications (say to email) where one would do.

This package provides some knobs to staunch the flow of notifications.

Behavior Gating Middleware

husherror.middleware.Hush should wrap your wsgi app before WebError.

The following example shows how to employ 'Hush' with it's defaults:

>>> from husherror.middleware import Hush

>>> myapp = Hush(myapp, threshold=3, period=1, release=10)
>>> myapp = WebError(myapp, ...)

>>> serve(myapp)

By default, the middleware defines defaults for threshold, period, and release that will prevent errors from bubbling up beyond the middleware is more than 3 exceptions per second are thrown along a specific code path. By default, Hush will continue to gate notifications until the number of errors per second stays under 3 for 10 seconds.

How it works

An error is keyed and recorded for frequency by passing the key to the Limiter, which returns whether or not this key is "gated".