juju/juju — pull request #990 by tasdomas (2014-10-29 13:50:34+00:00)
Title: Update charm interface implementation.

The Charm interface defined in the the charm package has been updated with a Metrics() method that returns the metrics the charm author has defined in a metrics.yaml file. This PR updates the Charm structure defined in core to conform with the updated interface, storing metrics definitions in mongo.