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service-bundle/Messenger/Middleware/LockableMessageMiddleware.php

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2021-04-16 13:37:47 +03:00
<?php
namespace RetailCrm\ServiceBundle\Messenger\Middleware;
use Symfony\Component\Lock\LockFactory;
use Symfony\Component\Messenger\Envelope;
use Symfony\Component\Messenger\Middleware\MiddlewareInterface;
use Symfony\Component\Messenger\Middleware\StackInterface;
use Symfony\Component\Messenger\Stamp\ReceivedStamp;
use Throwable;
/**
* Class LockableMessageMiddleware
*
* @package RetailCrm\ServiceBundle\Messenger\Middleware
*/
class LockableMessageMiddleware implements MiddlewareInterface
{
/**
* @var LockFactory
*/
private $lockFactory;
public function __construct(LockFactory $lockFactory)
{
$this->lockFactory = $lockFactory;
}
/**
* @param Envelope $envelope
* @param StackInterface $stack
*
* @return Envelope
*
* @throws Throwable
*/
public function handle(Envelope $envelope, StackInterface $stack): Envelope
{
$message = $envelope->getMessage();
if ($envelope->all(ReceivedStamp::class) && $message instanceof LockableMessage) {
$lock = $this->lockFactory->createLock($this->objectHash($message), null);
if (!$lock->acquire()) {
return $envelope;
}
try {
return $stack->next()->handle($envelope, $stack);
} catch (Throwable $exception) {
throw $exception;
} finally {
$lock->release();
}
}
return $stack->next()->handle($envelope, $stack);
}
/**
* @param LockableMessage $message
*
* @return string
*/
private function objectHash(LockableMessage $message): string
{
return hash('crc32', serialize($message));
}
}