How to configure session handling for CXF JAX-RS with service.xml (karaf and jetty) ?

[Alex Heneveld]

I cannot for the life of me figure out how to configure session handling 
when setting up CXF from a service.xml blueprint.

Things I'd hope might work -- specify my preferred SessionHandler as a 
provider, or supply a jetty-web.xml in my bundle -- don't have any 
effect.  It's easy enough if you have access to the 
ServletContextHandler or WebAppContext, and for non-jersey webapps the 
snippet at [1] in jetty-web.xml works a treat.  But the link between CXF 
and Jetty seems murky when coming from an OSGi blueprint.  It might work 
to ditch the blueprint and use a web.xml descriptor instead, specifying 
CXFServlet, and expecting a jetty-web.xml to be read for that servlet 
... but that feels like a step backwards.

Isn't this a common use case, persisting sessions among servers or 
across restarts?  Jetty has a whole chapter on it at [1].  But I'm not 
finding anything on it in the CXF docs.

So I welcome help from the experts!

Thanks
Alex


[1] from 
https://www.eclipse.org/jetty/documentation/9.4.x/sessions-usecases.html

<Configure class="org.eclipse.jetty.webapp.WebAppContext">
  <Call id="sh" name="getSessionHandler">
    <Set name="sessionCache">
      <New class="org.eclipse.jetty.server.session.DefaultSessionCache">
        <Arg><Ref id="sh"/></Arg>
        <Set name="sessionDataStore">
           <New 
class="org.eclipse.jetty.server.session.FileSessionDataStore">
             <Set name="storeDir">/tmp/sessions</Set>
           </New>
        </Set>
      </New>
    </Set>
  </Call>
</Configure>