[cdi-dev] [JBoss JIRA] (CDI-182) Cluster Lifecycle Events

[Pete Muir (JIRA)]

     [ https://issues.jboss.org/browse/CDI-182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Pete Muir updated CDI-182:
--------------------------

        Fix Version/s: TBD
                           (was: 1.1 (Proposed))
    Affects Version/s: 1.1.EDR1
                           (was: 1.1 (Proposed))


I'm deferring this for now, as CDI makes no mention of how it should work in a cluster at all, nor does Java EE really.

I would suggest raising this with your app server, and asking for them to add such events as part of their extension API.
                
> Cluster Lifecycle Events
> ------------------------
>
>                 Key: CDI-182
>                 URL: https://issues.jboss.org/browse/CDI-182
>             Project: CDI Specification Issues
>          Issue Type: Feature Request
>          Components: Events
>    Affects Versions: 1.1.EDR1
>         Environment: Any java environment.
>            Reporter: Kristoffer Sjögren
>            Priority: Minor
>             Fix For: TBD
>
>
> CDI 1.1 defines a set of lifecycle events related to different context
> within the application. We see a need to also define cluster lifecycle
> events for applications.
> These events could, for example, be used for subscribing/allocating
> and unsubscribing/deallocating external services/resources.
> More specifically, a @Cluster event that gets fired when an
> application gets @Initialized in the cluster, that is, post
> @Application @Initialized. And another @Cluster event that gets fired
> when the application get @Destroyed in the cluster, that is, pre
> @Application @Destroyed. These events only fires once per application
> and cluster, independent on how many cluster instances exists.
> Events are fault tolerant meaning that events are not affected by
> failing instances going out-of-service, as long as the cluster is
> still working. Notice that the @Destroyed event is of course only
> invoked if the cluster terminates gracefully.

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