Symfony Profiler

<?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\Container\ContainerInterface;
use Psr\Log\LoggerInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\Messenger\Envelope;
use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
use Symfony\Component\Messenger\Event\WorkerMessageRetriedEvent;
use Symfony\Component\Messenger\Exception\HandlerFailedException;
use Symfony\Component\Messenger\Exception\RecoverableExceptionInterface;
use Symfony\Component\Messenger\Exception\RuntimeException;
use Symfony\Component\Messenger\Exception\UnrecoverableExceptionInterface;
use Symfony\Component\Messenger\Retry\RetryStrategyInterface;
use Symfony\Component\Messenger\Stamp\DelayStamp;
use Symfony\Component\Messenger\Stamp\RedeliveryStamp;
use Symfony\Component\Messenger\Stamp\StampInterface;
use Symfony\Component\Messenger\Transport\Sender\SenderInterface;
use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
/**
* @author Tobias Schultze <http://tobion.de>
*/
class SendFailedMessageForRetryListener implements EventSubscriberInterface
{
private $sendersLocator;
private $retryStrategyLocator;
private $logger;
private $eventDispatcher;
private $historySize;
public function __construct(ContainerInterface $sendersLocator, ContainerInterface $retryStrategyLocator, LoggerInterface $logger = null, EventDispatcherInterface $eventDispatcher = null, int $historySize = 10)
{
$this->sendersLocator = $sendersLocator;
$this->retryStrategyLocator = $retryStrategyLocator;
$this->logger = $logger;
$this->eventDispatcher = $eventDispatcher;
$this->historySize = $historySize;
}
public function onMessageFailed(WorkerMessageFailedEvent $event)
{
$retryStrategy = $this->getRetryStrategyForTransport($event->getReceiverName());
$envelope = $event->getEnvelope();
$throwable = $event->getThrowable();
$message = $envelope->getMessage();
$context = [
'message' => $message,
'class' => \get_class($message),
];
$shouldRetry = $retryStrategy && $this->shouldRetry($throwable, $envelope, $retryStrategy);
$retryCount = RedeliveryStamp::getRetryCountFromEnvelope($envelope);
if ($shouldRetry) {
$event->setForRetry();
++$retryCount;
$delay = $retryStrategy->getWaitingTime($envelope, $throwable);
if (null !== $this->logger) {
$this->logger->error('Error thrown while handling message {class}. Sending for retry #{retryCount} using {delay} ms delay. Error: "{error}"', $context + ['retryCount' => $retryCount, 'delay' => $delay, 'error' => $throwable->getMessage(), 'exception' => $throwable]);
}
// add the delay and retry stamp info
$retryEnvelope = $this->withLimitedHistory($envelope, new DelayStamp($delay), new RedeliveryStamp($retryCount));
// re-send the message for retry
$this->getSenderForTransport($event->getReceiverName())->send($retryEnvelope);
if (null !== $this->eventDispatcher) {
$this->eventDispatcher->dispatch(new WorkerMessageRetriedEvent($retryEnvelope, $event->getReceiverName()));
}
} else {
if (null !== $this->logger) {
$this->logger->critical('Error thrown while handling message {class}. Removing from transport after {retryCount} retries. Error: "{error}"', $context + ['retryCount' => $retryCount, 'error' => $throwable->getMessage(), 'exception' => $throwable]);
}
}
}
/**
* Adds stamps to the envelope by keeping only the First + Last N stamps.
*/
private function withLimitedHistory(Envelope $envelope, StampInterface ...$stamps): Envelope
{
foreach ($stamps as $stamp) {
$history = $envelope->all(\get_class($stamp));
if (\count($history) < $this->historySize) {
$envelope = $envelope->with($stamp);
continue;
}
$history = array_merge(
[$history[0]],
\array_slice($history, -$this->historySize + 2),
[$stamp]
);
$envelope = $envelope->withoutAll(\get_class($stamp))->with(...$history);
}
return $envelope;
}
public static function getSubscribedEvents()
{
return [
// must have higher priority than SendFailedMessageToFailureTransportListener
WorkerMessageFailedEvent::class => ['onMessageFailed', 100],
];
}
private function shouldRetry(\Throwable $e, Envelope $envelope, RetryStrategyInterface $retryStrategy): bool
{
if ($e instanceof RecoverableExceptionInterface) {
return true;
}
// if one or more nested Exceptions is an instance of RecoverableExceptionInterface we should retry
// if ALL nested Exceptions are an instance of UnrecoverableExceptionInterface we should not retry
if ($e instanceof HandlerFailedException) {
$shouldNotRetry = true;
foreach ($e->getNestedExceptions() as $nestedException) {
if ($nestedException instanceof RecoverableExceptionInterface) {
return true;
}
if (!$nestedException instanceof UnrecoverableExceptionInterface) {
$shouldNotRetry = false;
break;
}
}
if ($shouldNotRetry) {
return false;
}
}
if ($e instanceof UnrecoverableExceptionInterface) {
return false;
}
return $retryStrategy->isRetryable($envelope, $e);
}
private function getRetryStrategyForTransport(string $alias): ?RetryStrategyInterface
{
if ($this->retryStrategyLocator->has($alias)) {
return $this->retryStrategyLocator->get($alias);
}
return null;
}
private function getSenderForTransport(string $alias): SenderInterface
{
if ($this->sendersLocator->has($alias)) {
return $this->sendersLocator->get($alias);
}
throw new RuntimeException(sprintf('Could not find sender "%s" based on the same receiver to send the failed message to for retry.', $alias));
}
}

vendor/symfony/messenger/EventListener/SendFailedMessageForRetryListener.php line 50