"Finalizer" middleware

[Paul Nathan]

I am working through a relatively full featured backend api server, which includes in the middleware stack, among other things, things like:

• api keys
• logging

let's walk through the problem:

the api keys middleware will check validity of the api key- if good, it calls next_middleware(), if not good, it calls send(), without calling next_middleware.

But, I also have a logging middleware that should track both the incoming URL and the outgoing status code.
now, as per spect, next_middleware ends the middleware call tree, but, I need this finalizer code (logging) to execute.

thoughts?