[jbossws-dev] [Design of JBoss Web Services] - Re: ws-eventing clustering problem

[heiko.braun@jboss.com]

Thanks for the detailed explanation. Now i clearly see the problem.

The eventing specs allow for SubscriptionManager 	interposition. This means you can have multiple event sources being handled by just one subscription manager. In composition with WS-Addressing a subscription response contains the subscription manager EPR (endpoint reference). Which basically is the URL plus reference parameters. 

Applying this idea to your cluster topology means that you would have a single SubscriptionManager instance running on a particular node, addressed through WS-Addressing.

Still this lacks some features that would need to be implemented:

- SubscriptionManager runs HA-Singleton
- There would only be one EventDispatcher, available through HA-JNDI
- Event sources need to know the subscription manager EPR details. This could be propagated through HA-JNDI.

Does this make sense to you?

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