[jboss-jira] [JBoss JIRA] (WFLY-4661) Provide Support for Clustered Singleton MDBs

[Flavia Rainone (JIRA)]

     [ https://issues.jboss.org/browse/WFLY-4661?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Flavia Rainone updated WFLY-4661:
---------------------------------
    Description: 
Provide Support for Clustered Singleton MDBs.

Provide annotation and configuration support to mark such MDB deployments Clustered Singleton MDBs.

When "Clustered Singleton MDBs" are deployed in a cluster; only one node (server) is active to consume messages serially. When the node fails; another the active node's "Clustered Singleton MDBs" starts consuming the messages.

To mark an MDB as clustered singleton, one can either use the clustered-singleton xml element, like this:
<jboss:ejb-jar xmlns:jboss="http://www.jboss.com/xml/ns/javaee"
               xmlns="http://java.sun.com/xml/ns/javaee"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xmlns:c="urn:clustering:1.1"
               xmlns:d="urn:delivery-active:1.1"
               xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee http://www.jboss.org/j2ee/schema/jboss-ejb3-2_0.xsd http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_1.xsd"
               version="3.1"
               impl-version="2.0">
       <c:clustering>
            <ejb-name>HelloWorldQueueMDB</ejb-name>
            <c:clustered-singleton>true</c:clustered-singleton>
        </c:clustering>
</jboss:ejb-jar>

Or one can use the @org.jboss.ejb3.annotation.ClusteredSingleton in your MDB class.

This feature requires no extra configuration at the server, apart from running the service in a cluster.

  was:
Provide Support for Clustered Singleton MDBs.

Provide annotation and configuration support to mark such MDB deployments Clustered Singleton MDBs.

When "Clustered Singleton MDBs" are deployed in a cluster; only one node (server) is active to consume messages serially. When the node fails; another the active node's "Clustered Singleton MDBs" starts consuming the messages.



> Provide Support for Clustered Singleton MDBs
> --------------------------------------------
>
>                 Key: WFLY-4661
>                 URL: https://issues.jboss.org/browse/WFLY-4661
>             Project: WildFly
>          Issue Type: Feature Request
>          Components: Clustering, JMS
>    Affects Versions: 10.0.0.Alpha1
>            Reporter: Flavia Rainone
>            Assignee: Flavia Rainone
>            Priority: Minor
>
> Provide Support for Clustered Singleton MDBs.
> Provide annotation and configuration support to mark such MDB deployments Clustered Singleton MDBs.
> When "Clustered Singleton MDBs" are deployed in a cluster; only one node (server) is active to consume messages serially. When the node fails; another the active node's "Clustered Singleton MDBs" starts consuming the messages.
> To mark an MDB as clustered singleton, one can either use the clustered-singleton xml element, like this:
> <jboss:ejb-jar xmlns:jboss="http://www.jboss.com/xml/ns/javaee"
>                xmlns="http://java.sun.com/xml/ns/javaee"
>                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>                xmlns:c="urn:clustering:1.1"
>                xmlns:d="urn:delivery-active:1.1"
>                xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee http://www.jboss.org/j2ee/schema/jboss-ejb3-2_0.xsd http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_1.xsd"
>                version="3.1"
>                impl-version="2.0">
>        <c:clustering>
>             <ejb-name>HelloWorldQueueMDB</ejb-name>
>             <c:clustered-singleton>true</c:clustered-singleton>
>         </c:clustering>
> </jboss:ejb-jar>
> Or one can use the @org.jboss.ejb3.annotation.ClusteredSingleton in your MDB class.
> This feature requires no extra configuration at the server, apart from running the service in a cluster.



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