[jboss-user] [JBossWS] - Re: NPE deploying web services in service archive in CR1 rel

adinn do-not-reply at jboss.com
Fri Oct 24 05:15:41 EDT 2008

I managed to debug this a little further and have identified why the startup code is hanging -- it is because of something my code is doing (I'll come to that in a second). I still don't know why the WebService port is being looked up before it is defined so there is still an issue there.

The hang is because I am trying to coordinate initialization of my war apps and the XTS service which deploys them. The problem I face is that the listeners are run in an arbitrary order but the war apps have initialization dependencies. So, I make the war listeners register callbacks in a fixed sequence. If any of them finds that the sequence is complete after regsitering then it runs all the callbacks.

This was ok until I added transaction recovery which requires initialization in the XTS service start() routine before the wars can be initialized. I had assumed  that the XTS service start() call happened in parallel with the war listener calls so I added a latch in the callback runner which was released by the XTS service start(). If the runner gets there first it does a wait() and the start() call wakes it with a notfiy(). It appears that the start() and listener call actually run in the same thread in arbitrary order and up until now the start() call has always run first. Now, the sar start() call occasionally gets run last, resulting in a deadlock. I guess I need to make my war apps depend on the XTS service bean.

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