Open Stack

Hi Guys,
 
Feeling a bit dull at the moment, I can't seem to figure this out.

I'm trying to write a very basic bit of middleware for keystone (no
logic, it just logs "here!" when hit or similar) to get to know the
system, and build up from there.

I'm trying to work back from the existing middleware and have looked
through the middleware and contrib folders in git but I can't seem to
crack it.

Is there an example bit of middleware somewhere I missed, or some
documentation on how to write middleware anywhere?

Or any tips in general?

Thanks

/Kieran