What would be the best place to gather basic metrics?

We have multiple implementations spanning many namespaces and edges.  I would like to see if I could identify a single place, perhaps on HSREGISTRY or HSBUS, that I could capture certain events like searches (from all customers) and record transfers (with requester and provider).  

The goal is to have a dashboard that would show simple stats such as searches by participant, records shared by participant and records consumed by participant.  These are the 3 most important.

I appreciated the feedback on the other question of "how" but now I'm hoping to find the "Where".