[METRON-1241] Enable the REST API to use a cache for the zookeeper config similar to the Bolts

• Type: Improvement
• Status: Done
• Priority: Major
• Resolution: Done
• Fix Version/s: 0.4.2
• Assignee: Casey Stella
• Reporter: Casey Stella
• Created: 10/Oct/17 06:55
• Updated: 19/Dec/17 19:06
• Resolved: 19/Dec/17 19:06

Description

Currently, our bolts use a TreeCache to capture and update internal state. The REST API, on the other hand, polls zookeeper every time a request is made to retrieve a configuration, a poll model. Rather than do this, it would be better to share an abstraction between the two pieces of infrastructure to enable the REST API to be backed by a TreeCache, which will prevent zookeeper from being abused and migrate it to a push model.

Issue Links

• links to: GitHub Pull Request #795