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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\Indexer\Model;
use Magento\Framework\Indexer\ConfigInterface;
use Magento\Framework\Indexer\IndexMutexException;
use Magento\Framework\Indexer\IndexMutexInterface;
use Magento\Framework\Lock\LockManagerInterface;
/**
* Intended to prevent race conditions between indexers using the same index table.
*/
class IndexMutex implements IndexMutexInterface
{
private const LOCK_PREFIX = 'indexer_lock_';
private const LOCK_TIMEOUT = 60;
/**
* @var LockManagerInterface
*/
private $lockManager;
/**
* @var ConfigInterface
*/
private $config;
/**
* @var int
*/
private $lockWaitTimeout;
/**
* @param LockManagerInterface $lockManager
* @param ConfigInterface $config
* @param int $lockWaitTimeout
*/
public function __construct(
LockManagerInterface $lockManager,
ConfigInterface $config,
int $lockWaitTimeout = self::LOCK_TIMEOUT
) {
$this->lockManager = $lockManager;
$this->lockWaitTimeout = $lockWaitTimeout;
$this->config = $config;
}
/**
* @inheritdoc
*/
public function execute(string $indexerName, callable $callback): void
{
$lockName = $indexerName;
$indexerConfig = $this->config->getIndexer($indexerName);
if (isset($indexerConfig['shared_index'])) {
$lockName = $indexerConfig['shared_index'];
}
if ($this->lockManager->lock(self::LOCK_PREFIX . $lockName, $this->lockWaitTimeout)) {
try {
$callback();
} finally {
$this->lockManager->unlock(self::LOCK_PREFIX . $lockName);
}
} else {
throw new IndexMutexException($indexerName);
}
}
}