Brian Stansberry [
http://community.jboss.org/people/bstansberry%40jboss.com] created the
discussion
"Re: Overall control of graceful shutdown"
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http://community.jboss.org/message/563085#563085
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The GracefulShutdownTerminator would be registered in start(StartContext). If the shutdown
isn't meant to be graceful, the MSC would trigger an overall stop (probably by
stopping a root service all the others depend on) and then would immediately invoke all
the GracefulShutdownTerminators. So waiting until stop() to register the terminator would
not work.
I smell a possible race there though even with registering in start().
Your question about the deployments/connector gets into the real heart of the issue, how
subsystems and services that are part of a deployment can be composed such that the
dependencies work out. I think it's worthwhile to think through how to do that, since
whether or not the GracefulShutdownTerminator idea makes sense, using the MSC dependency
mechanism is very likely going to be needed to get graceful shutdown to work.
For example, as *part* of a war deployment there could be a service that monitors the
existence of active sessions during shutdown. It depends on some other service in the
deployment (e.g. the session manager) and on the connector. The connector will not stop
until that service stops. That service registers the GracefulShutdownTerminator.
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