Actually it is easier than that...
Just create an @Component class. Inside of the class, add the following:
@Reference(target = ModuleServiceLifecycle.PORTAL_INITIALIZED, unbind = "-")
protected void setModuleServiceLifecycle(ModuleServiceLifecycle moduleServiceLifecycle) { }
Then build out your logic in an @Activate method. This method will
only be invoked once the module has started, the module will only
start after all references have been satisfied, and the
PORTAL_INITIALIZED instance is only available to satisfy after the
portal startup is complete.
