как в Symfony 2 создать action onbefore?

namespace AcmeUserBundleEventListeners;
use AcmeUserBundleControllerDefaultController;
use SymfonyBundleFrameworkBundleControllerController;
use SymfonyComponentBrowserKitResponse;
use SymfonyComponentHttpFoundationRedirectResponse;
use SymfonyComponentHttpKernelEventFilterControllerEvent;
use SymfonyComponentSecurityAclExceptionException;


class BeforeActionListener {
public function onKernelController(FilterControllerEvent $event){

try{

$controller = $event->getController();



}
catch(Exception $e){}
}

}

imports:
- { resource: parameters.yml }
- { resource: security.yml }
services:

kernel.listener.beforeactionlistener:
class: AcmeUserBundleEventListenersBeforeActionListener
tags:
- { name: kernel.event_listener, event: kernel.controller, method: onKernelController }
....