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

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.