In our application we use guava eventbus along with activemq to implement event based requirements between two web applications. Events are being published and subscribed by different components of thw two web applications. For receiving a message published by a component of a different web application a javax.jms.MessageListener is registered on startup that calls guava's eventbus.post(). Guava's event bus is used to decouple different components and activemq mainly acts as a distributed message broker for inter web application communication.
We need to enhance this framework to support event auditing. This could include 1. Maintaining a history of which feature/component triggered the event 2. What event was triggered (there could be multiple events that a component could trigger) 3. When was the event triggered 4. Which components (consumers) subscribed to it 5. What action(s) was performed 6. When did the action(s) complete. Note that there could be a chain of events. An event triggered by component A being acted upon by an action in component B. Subsequently on completion of the action, component B creates an event that triggers an action in component C. We need to create a UI that displays the above event auditing details. I would like to get expert inputs on how could this be implemented by extending the current usage/configuration of guava event bus and activmq. I understand that activemq does support persistence but some open questions are 1. Can the above details be captured and persisted asynchronously in activemq? 2. Can the messages (events) be retrieved back from activemq to build up a UI that I mentioned above? 3. Would persisting the event in a RDBMS be better (more structured?) then persisting them through activemq? Would the performance be drastically different between database persistence and activemq? 4. Is activemq used for such event auditing use cases? Are there any constraints/limitations that we need to be aware off? Thanks. -- Sent from: http://activemq.2283324.n4.nabble.com/ActiveMQ-User-f2341805.html
