getRetryStrategyForTransport example

$this->retryStrategyLocator = $retryStrategyLocator;
        $this->logger = $logger;
        $this->eventDispatcher = $eventDispatcher;
        $this->historySize = $historySize;
    }

    /** * @return void */
    public function onMessageFailed(WorkerMessageFailedEvent $event)
    {
        $retryStrategy = $this->getRetryStrategyForTransport($event->getReceiverName());
        $envelope = $event->getEnvelope();
        $throwable = $event->getThrowable();

        $message = $envelope->getMessage();
        $context = [
            'class' => $message::class,
        ];

        $shouldRetry = $retryStrategy && $this->shouldRetry($throwable, $envelope, $retryStrategy);

        $retryCount = RedeliveryStamp::getRetryCountFromEnvelope($envelope);