[Twisted-Python] Klein?

[Robert DiFalco]

Is this the right place to ask klein questions? I'm writing a metrics
plugin for Klein and I can't figure out how to inject a metrics handler so
that I can get route, path, duration, and status code. What I'm doing now
sucks because Klein and twisted interact in complex ways on Failure and
status codes.

# Replace the klein _call with the metrics generating call
_app._call = _callWithMetrics

Rather than replace _call with my version of _call I was hoping there was a
cleaner way to get the start and stop with the result code of a route
invocation. Thoughts?
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