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

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.