Stopping Karaf

[Alex Soto]

Hello,

What would be the best way to shutdown Karaf as soon as possible from a 
Declarative Component that needs to run at startup. 
This component will check some authorization API and decide if the user is 
authorized to run the app.  So, I thought to have a component  with 
@Component(immediate = true) and: 

        @Reference
        private SystemService systemService;

        @Activate
        void init() {
                if (!authorized()) {
                        systemService.halt();
                }
        }


Is this a good approach?
Should I add the bundle containing this component as a boot feature? 
Any other advise?


Best regards,
Alex soto