graph IDP activity with cacti / rrdtools

[procaccia]

Hello,

I want to produce graph usage stats from my IDPs
I found 
https://wiki.shibboleth.net/confluence/display/SHIB2/IdP+Audit+Log+Analysis+Tool
whitch does a very good job for text formatted stats
has anyone wrote something to parse from loganalysis.py the values to 
feed to a rrd archive ?
any cacti template ?
If not, have you an idea on how to get only the last 5mn part of the 
idp-audit.log !?

thanks