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<?php
declare(strict_types=1);
namespace TMV\Laminas\Messenger\Bridge\Doctrine\Middleware;
use Doctrine\DBAL\Connection;
use Doctrine\DBAL\Exception;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\Messenger\Envelope;
use Symfony\Component\Messenger\Middleware\StackInterface;
use Symfony\Component\Messenger\Stamp\ConsumedByWorkerStamp;
/**
* @final
*/
class DoctrinePingConnectionMiddleware extends AbstractDoctrineMiddleware
{
protected function handleForManager(
EntityManagerInterface $entityManager,
Envelope $envelope,
StackInterface $stack
): Envelope {
if (null !== $envelope->last(ConsumedByWorkerStamp::class)) {
$this->pingConnection($entityManager);
}
return $stack->next()->handle($envelope, $stack);
private function pingConnection(EntityManagerInterface $entityManager): void
$connection = $entityManager->getConnection();
try {
$this->executeDummySql($connection);
} catch (Exception) {
$connection->close();
// Attempt to reestablish the lazy connection by sending another query.
if (! $entityManager->isOpen()) {
$this->managerRegistry->resetManager($this->entityManagerName);
* @throws Exception
private function executeDummySql(Connection $connection): void
$connection->executeQuery($connection->getDatabasePlatform()->getDummySelectSQL());
thomasvargiu /
laminas-messenger
