<?php 
 
/* 
 * This file is part of the Symfony package. 
 * 
 * (c) Fabien Potencier <fabien@symfony.com> 
 * 
 * For the full copyright and license information, please view the LICENSE 
 * file that was distributed with this source code. 
 */ 
 
namespace Symfony\Component\Messenger\EventListener; 
 
use Symfony\Component\EventDispatcher\EventSubscriberInterface; 
use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent; 
use Symfony\Component\Messenger\Event\WorkerRunningEvent; 
use Symfony\Component\Messenger\Exception\HandlerFailedException; 
use Symfony\Component\Messenger\Exception\StopWorkerExceptionInterface; 
 
/** 
 * @author GrĂ©goire Pineau <lyrixx@lyrixx.info> 
 */ 
class StopWorkerOnCustomStopExceptionListener implements EventSubscriberInterface 
{ 
    private bool $stop = false; 
 
    public function onMessageFailed(WorkerMessageFailedEvent $event): void 
    { 
        $th = $event->getThrowable(); 
        if ($th instanceof StopWorkerExceptionInterface) { 
            $this->stop = true; 
        } 
        if ($th instanceof HandlerFailedException) { 
            foreach ($th->getNestedExceptions() as $e) { 
                if ($e instanceof StopWorkerExceptionInterface) { 
                    $this->stop = true; 
                    break; 
                } 
            } 
        } 
    } 
 
    public function onWorkerRunning(WorkerRunningEvent $event): void 
    { 
        if ($this->stop) { 
            $event->getWorker()->stop(); 
        } 
    } 
 
    public static function getSubscribedEvents(): array 
    { 
        return [ 
            WorkerMessageFailedEvent::class => 'onMessageFailed', 
            WorkerRunningEvent::class => 'onWorkerRunning', 
        ]; 
    } 
}