Access doctrine from authentication failure handler in Symfony2 - authentication

Question

I'm trying to write some loggin failure info in database from a custom authentication handler.
My problem is to gain access to the database since I don't know where the Doctrine object might be stored
Here's my code for now :
namespace MyApp\FrontBundle\Controller;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\Request as Request;
use Symfony\Component\HttpFoundation\RedirectResponse as RedirectResponse;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Component\Security\Http\Authentication as Auth;
use Symfony\Component\Security\Core\Exception\AuthenticationException as AuthException;
class SecurityHandler implements Auth\AuthenticationFailureHandlerInterface
{
public function onAuthenticationFailure(Request $request, AuthException $token)
{
try
{
$lastLoginFailure = new DateTime();
// get database object here
}
catch(\Exception $ex)
{
}
}
}
Any ideas ?

Answer 1

Turn your SecurityHandler into a service and then inject the doctrine entity manager into it.
http://symfony.com/doc/current/book/service_container.html

Answer 2

Start command php app/console container:debug.
Copy doctrine.orm.entity_manager and paste to your hadler constructor arguments like
[...., #doctrine.orm.entity_manager].
In hadler use Doctrine\ORM\EntityManager;

Answer 3

I think you should extends your class "SecurityHandler" with ContainerAware if you want to use service since your Security Handler is not a controller.
class SecurityHandler extend ContainerAware implements Auth\AuthenticationFailureHandlerInterface{
public function onAuthenticationFailure(Request $request, AuthException $token)
{
try
{
$lastLoginFailure = new DateTime();
// get database object here
$doctrine = $this->container->get('doctrine');
$repository = $doctrine->getRepository('*NAME OF REPO*');
}
catch(\Exception $ex)
{
}
}
}