src/Core/Framework/DataAbstractionLayer/Doctrine/RetryableTransaction.php line 19
<?php declare(strict_types=1);
namespace Shopware\Core\Framework\DataAbstractionLayer\Doctrine;
use Doctrine\DBAL\Connection;
use Doctrine\DBAL\Exception\RetryableException;
use Shopware\Core\Framework\Log\Package;
#[Package('core')]
class RetryableTransaction
{
/**
* Executes the given closure inside a DBAL transaction. In case of a deadlock (RetryableException) the transaction
* is rolled back and the closure will be retried. Because it may run multiple times the closure should not cause
* any side effects outside of its own scope.
*
* @return mixed
*/
public static function retryable(Connection $connection, \Closure $closure)
{
return self::retry($connection, $closure, 0);
}
/**
* @param \Closure(Connection):mixed $closure The function to execute transactionally.
*
* @return mixed
*/
private static function retry(Connection $connection, \Closure $closure, int $counter)
{
++$counter;
try {
return $connection->transactional($closure);
} catch (RetryableException $retryableException) {
if ($connection->getTransactionNestingLevel() > 0) {
// If this RetryableTransaction was executed inside another transaction, do not retry this nested
// transaction. Remember that the whole (outermost) transaction was already rolled back by the database
// when any RetryableException is thrown.
// Rethrow the exception here so only the outermost transaction is retried which in turn includes this
// nested transaction.
throw $retryableException;
}
if ($counter > 10) {
throw $retryableException;
}
// Randomize sleep to prevent same execution delay for multiple statements
usleep(random_int(10, 20));
return self::retry($connection, $closure, $counter);
}
}
}