Collecting and Graphing Various Bro Statistics

I'm looking to update some log and event management front-end infrastructure and as many of you know properly sizing them requires getting a handle on event rates, uncompressed log sizes etc. I seem to recall someone was working on a plugin to instrument the sending of Bro stats to some combination of statsd(not sure which version), Graphite and Grafana. I don't think the presentation ever got posted, so I don't know if this was just conceptual or actually in use somewhere, but I'm curious how far this got and if it would be a good fit for doing things like measuring event logging rates for the various Bro log files, and possibly file sizes over time? Any other tidbits about architecture, event pipeline, interesting use cases etc would be a bonus. If folks have any other automated ways they are doing this I'd be curious as well.