[jbosscache-issues] [JBoss JIRA] Created: (JBCACHE-1470) Option to disable cache event generation for a cache operation.

[Galder Zamarreno (JIRA)]

Option to disable cache event generation for a cache operation.
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                 Key: JBCACHE-1470
                 URL: https://jira.jboss.org/jira/browse/JBCACHE-1470
             Project: JBoss Cache
          Issue Type: Feature Request
      Security Level: Public (Everyone can see)
            Reporter: Galder Zamarreno
            Assignee: Galder Zamarreno
             Fix For: 3.1.0.GA


For the prototype that I'm building for JBCACHE-816, I would like to implement a new Option that 
disables generation of cache listener events for a particular cache operation.

Why is that I want to implement this? First, bear in mind that currently, I'm trying to get a prototype
done just by accessing the Cache interface (no SPI)

Take this scenario:
- Cluster 1 with nodes A, B and C.
- Cluster 2 with nodes X, Y and Z.

The idea of JBCACHE-816 is to enable inter cluster or data centre asynchronous replication of data.
This service would be a singleton running in the coordinators of the the clusters that we're interconnecting.
For this case, assume coord for C1 is A and coord for C2 is X.

Both A and X start a new JGroups communication channel to pass each other node modification or 
removal messages. The service is based around cache listeners where they listen to cache 
modifications notifications and send it to the other node. For example:

User puts data in A. Listener in A catches that, takes the modification and sends it over the JGroups channel
to X which in turn needs to replicate it to the C2. To do that, it currently uses Cache API, so X calls put(...) on 
the cache.

I'd like to make communications be both way to give much greater flexibility to the solution, so when X calls 
put(...) on the cache, it'll also receive notifications so you basically end up in an endless ping pong effect.

The idea is for this put() call not to generate event notifications locally to avoid this ping pong effect.

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