Extract state notification listener from Logger

The concept of notifying replication status should be decoupled
from the actual implementation of writing it to a Slf4J logger.

In the future (not so far) we may want to implement different 
listeners and take action based on warning / errors, either 
scripted or pluggable.

Change-Id: Icfc3884bf4365a396e7de76b4c5a3a274b4c28ad
4 files changed
tree: 6aaad5531e3d5eb73086fa48df4191e62bd3ce92
  1. .settings/
  2. src/
  3. .gitignore
  4. BUCK
  5. LICENSE