[overlord-issues] [JBoss JIRA] (RTGOV-289) Improve mechanism for obtainng core components where injection not possible

[Gary Brown (JIRA)]

     [ https://issues.jboss.org/browse/RTGOV-289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gary Brown updated RTGOV-289:
-----------------------------

    Fix Version/s: 2.1.0.Final
                       (was: 2.0.0.Final)

    
> Improve mechanism for obtainng core components where injection not possible
> ---------------------------------------------------------------------------
>
>                 Key: RTGOV-289
>                 URL: https://issues.jboss.org/browse/RTGOV-289
>             Project: RTGov (Run Time Governance)
>          Issue Type: Enhancement
>            Reporter: Gary Brown
>            Assignee: Gary Brown
>             Fix For: 2.1.0.Final
>
>
> Currently components within the overlord-rtgov.war can use CDI injection to resolve references.
> However there are other places where the core components need to be accessed, that are outside this war, and therefore cannot benefit from CDI.
> The current approach is to gets these components to register themselves with an 'accessor' class that manages a singleton reference. The problem is that due to startup initialisation order ambiguity, if the singleton has not been set, the caller must be blocked for a period of time.
> Rather than block the deployer, it would be better to find an asynchronous approach to resolve these references.
> Previously EJBs were being used to provide access to these components - and with the injection of those EJB resource, the dependencies were automatically managed by the container. However use of EJBs resulted in client proxies, which affected performance.
> Need to rethink how these references are resolved in a way that is generally applicable.

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