Re: Exception handling in receivers and listeners

JGroups has callbacks for system events, like views and merging. If you 
through an exception in such a callback, JGroups will catch it and log 
it, but not propagate it.

The other type of callbacks are methods which can be invoked as a result 
of a cluster wide method call. You can throw any type of exception, and 
JGroups will propagate them back to the caller

Tim Fox wrote:
> Hi again
>
> In RequestHandler, Receiver, MessageListener or MembershipListener 
> methods which are invoked by JGroups when some event has occurred, if an 
> exception is thrown in the handler code, is it proper practice to catch 
> the exceptions and deal with them locally (log them?).
>
> Or is it permissible to wrap them in a RuntimeException and propagate it 
> back into JGroups - if this happens - what does JGroups do with the 
> exception - log it, ignore it or pass it back to the caller? (I guess 
> passing back to the caller would only make sense for synchronous 
> invocations made using messsage dispatcher)
>
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>   

-- 
Bela Ban
Lead JGroups / Manager JBoss Clustering Group
JBoss - a division of Red Hat


-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642