[jira] [Created] (KARAF-4685) Support session replication through OSGi 6 http whiteboard

["Roland Hauser (JIRA)" <ji...@apache.org>]

Roland Hauser created KARAF-4685:
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             Summary: Support session replication through OSGi 6 http whiteboard
                 Key: KARAF-4685
                 URL: https://issues.apache.org/jira/browse/KARAF-4685
             Project: Karaf
          Issue Type: Improvement
          Components: cellar-http
            Reporter: Roland Hauser


Currently, session replication can only be done through specifying the Hazelcast filter/listener in the web.xml file of a web-application. This can be a serious disadvantage if you also want to install a web-application to another web-container which does not need clustering, and, consequently, does not contain the Hazelcast libs. In this case, the application won't start.

I suggest an additional way how session replication could be realized without the need of modifying the web-app: it could be done through a Cellar component which implements a http whiteboard. I would realize this as follows:
- Register a Filter/Session listener to the OSGi service registry. Per default, every web-application installed is considered for session replication.
- It should be possible to configure Hazelcast filter properties either through a config file inside the OSGI-INF folder of the web-app, or, through the ConfigAdmin service.
- If the sessions of a specific web-application should not be replicated, then this could be flagged either through a config file inside the OSGI-INF folder of the web-app, or, through the ConfigAdmin service.

What's your opinion?



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