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<?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 Psr\Log\LoggerInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
use Symfony\Component\Messenger\Event\WorkerRunningEvent;
use Symfony\Component\Messenger\Exception\InvalidArgumentException;
/**
* @author Michel Hunziker <info@michelhunziker.com>
*/
class StopWorkerOnFailureLimitListener implements EventSubscriberInterface
{
private int $maximumNumberOfFailures;
private ?LoggerInterface $logger;
private int $failedMessages = 0;
public function __construct(int $maximumNumberOfFailures, LoggerInterface $logger = null)
{
$this->maximumNumberOfFailures = $maximumNumberOfFailures;
$this->logger = $logger;
if ($maximumNumberOfFailures <= 0) {
throw new InvalidArgumentException('Failure limit must be greater than zero.');
}
}
public function onMessageFailed(WorkerMessageFailedEvent $event): void
{
++$this->failedMessages;
}
public function onWorkerRunning(WorkerRunningEvent $event): void
{
if (!$event->isWorkerIdle() && $this->failedMessages >= $this->maximumNumberOfFailures) {
$this->failedMessages = 0;
$event->getWorker()->stop();
$this->logger?->info('Worker stopped due to limit of {count} failed message(s) is reached', ['count' => $this->maximumNumberOfFailures]);
}
}
public static function getSubscribedEvents(): array
{
return [
WorkerMessageFailedEvent::class => 'onMessageFailed',
WorkerRunningEvent::class => 'onWorkerRunning',
];
}
}