prometheus/prometheus — pull request #179 by matttproud (2013-04-24 15:01:36+00:00)
Title: Include generated Protocol Buffer descriptor.

The Protocol Buffer compiler supports generating a machine-readable
descriptor file encoded as a provided Protocol Buffer message type,
which can be used to decode messages that have been encoded with it
after-the-fact. The generated descriptor also bundles in dependent
message types.

We can use this to perform forensics on old Prometheus clients, if
necessary.