Write JOPR plugin to manage and monitor a JCR engine/cluster

Write a JOPR plugin that allows a user to manage and monitor a ModeShape engine or cluster. There are a number of things that can be monitored, but we'd want to come up with a good list of useful things. For example:

• nodes in cluster
• # of sessions for each repository
• sources and their activity
• events and journaling
• search engine and it's use/update activity
• sequencers and their activity
• analyzers and their activity
• executor services ?
• other??