[jboss-as7-dev] Notification of shutdown commencing
David M. Lloyd
david.lloyd at redhat.com
Sat Apr 7 13:10:06 EDT 2012
On 04/06/2012 02:55 PM, Brian Stansberry wrote:
> I can't figure out a way to produce a notification of an impending
> server shutdown if a user does a soft kill of the server process.
>
> It's easy enough if shutdown is initiated by a management op; the op
> handler can trigger the notification. But a soft kill triggers a
> shutdown hook registered by the MSC ServiceContainer, and once that
> starts, services start stopping semi-randomly and its too late to notify
> anyone that that is going to start happening.
>
> The MSC shutdown stuff isn't exposed, so there's no way to tie into
> that. Adding another shutdown hook doesn't help as there's no
> predictable order of execution.
Originally I had assumed (wrongly) at some level that AS 7 would be
completely service-oriented as 5 and 6 were. The reality is that AS 7
is oriented around management, not services. I still think that a
service-oriented VM is a valid use case for MSC, however I think that
this is not the case in AS 7. So I think I should introduce an option
to disable the shutdown hook in MSC, and instead we should create one
for AS 7 which executes a shutdown management operation.
WDYT?
--
- DML
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