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<?php
/*************************************************************************
*
* Copyright 2023 Adobe
* All Rights Reserved.
*
* NOTICE: All information contained herein is, and remains
* the property of Adobe and its suppliers, if any. The intellectual
* and technical concepts contained herein are proprietary to Adobe
* and its suppliers and are protected by all applicable intellectual
* property laws, including trade secret and copyright laws.
* Dissemination of this information or reproduction of this material
* is strictly forbidden unless prior written permission is obtained
* from Adobe.
* ***********************************************************************
*/
declare(strict_types=1);
namespace Magento\DataExporter\Lock;
use Magento\DataExporter\Model\Logging\FeedState;
use Magento\Framework\Lock\LockManagerInterface;
/**
* Intended to prevent race conditions between different feed sync processes when the same feed using the same table.
*/
class FeedLockManager
{
private const LOCK_PREFIX = 'feed_sync_';
private const STATE_PROPERTY_NAME = 'lockedBy';
private const DEFAULT_LOCK_TIME = 0;
public function __construct(
private readonly LockManagerInterface $lockManager,
private readonly FeedState $feedState
) {
}
/**
* Set feed sync lock.
*
* @param string $feedName
* @param string $lockedBy
* @return bool
*/
public function lock(string $feedName, string $lockedBy): bool
{
$isLocked = $this->lockManager->lock($this->getLockName($feedName), self::DEFAULT_LOCK_TIME);
if ($isLocked) {
try {
$lockedBy = sprintf('%s(%s)', $lockedBy, getmypid());
$this->feedState->save($feedName, self::STATE_PROPERTY_NAME, $lockedBy);
} catch (\Throwable $ignore) {
// ignore
}
}
return $isLocked;
}
/**
* @param string $feedName
* @return string|null
*/
public function getLockedByName(string $feedName): ?string
{
return $this->feedState->get($feedName, self::STATE_PROPERTY_NAME);
}
/**
* Remove feed sync lock.
*
* @param string $feedName
* @return bool
*/
public function unlock(string $feedName): bool
{
return $this->lockManager->unlock($this->getLockName($feedName));
}
public function isLocked(string $feedName): bool
{
return $this->lockManager->isLocked($this->getLockName($feedName));
}
/**
* @param $feedName
* @return string
*/
private function getLockName($feedName): string
{
return self::LOCK_PREFIX . $feedName;
}
}