<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">The DUP approach you mention may be best anyway. If we add a mechanism to do an async read of the model held by an uncommitted op, the hook to let your initializer do that will very likely involve a DUP passing in some object anyway. To avoid that there would need to be some “read uncommitted” API added to ModelController that anyone could use.</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jul 14, 2016, at 9:41 AM, Brian Stansberry <<a href="mailto:brian.stansberry@redhat.com" class="">brian.stansberry@redhat.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">So you want to invoke a :read-attribute management op from a servlet initializer?<div class=""><br class=""></div><div class="">That shouldn’t deadlock, as it’s a read that won’t need the exclusive management lock that the thread controlling the deploy controls.</div><div class=""><br class=""></div><div class="">It won’t see the correct value at boot though, or in any composite op (e.g. CLI batch) where the attribute you are reading has been modified in the same overall op as the deploy step. That change is not visible to other threads until the op that made it commits. And it won’t commit until deploy completes.<br class=""><div class=""><br class=""><div class=""><blockquote type="cite" class=""><div class="">On May 28, 2015, at 5:37 AM, Tomaž Cerar <<a href="mailto:tomaz.cerar@gmail.com" class="">tomaz.cerar@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class=""><div class="gmail_extra"><br class=""><div class="gmail_quote">On Wed, May 27, 2015 at 12:17 AM, Stan Silvert <span dir="ltr" class=""><<a href="mailto:ssilvert@redhat.com" target="_blank" class="">ssilvert@redhat.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div id=":4vf" class="a3s" style="overflow:hidden">Thanks. I just need the servlet to read a flag that I put into the<br class="">
owner attribute of the deployment. So I should be OK.<br class="">
<br class="">
Incidentally, I find that this is something I run into once in awhile.<br class="">
I need a subsystem to communicate with a deployment's application code.<br class="">
The other way I've done this is to stuff things into the ServletContext<br class="">
using a DeploymentUnitProcessor and the JBossWebMetaData.<br class="">
<br class="">
If anyone knows a third option I'd love to hear it.</div></blockquote></div><br class=""><br class=""></div><div class="gmail_extra">The DPU with extra jbossmetadata sounds a reasonable way to do this.<br class=""><br class=""></div><div class="gmail_extra">you could even go further and provide this data only to your servlet instead whole ServletContext<br class=""><br class=""></div><div class="gmail_extra">but if all you need is to pass one attribute around, no need to complicate it more.<br class=""><br class="">--<br class=""></div><div class="gmail_extra">tomaz<br class=""></div><div class="gmail_extra"><br class=""></div><div class="gmail_extra"><br class=""></div></div>
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