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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\MessageQueue\Model\ResourceModel;
use Magento\Framework\MessageQueue\PoisonPill\PoisonPillPutInterface;
use Magento\Framework\MessageQueue\PoisonPill\PoisonPillReadInterface;
use Magento\Framework\Model\ResourceModel\Db\AbstractDb;
/**
* PoisonPill class that enclose read and put interface.
*/
class PoisonPill extends AbstractDb implements PoisonPillPutInterface, PoisonPillReadInterface
{
/**
* Table name.
*/
const QUEUE_POISON_PILL_TABLE = 'queue_poison_pill';
/**
* @inheritdoc
*/
protected function _construct()
{
$this->_init(self::QUEUE_POISON_PILL_TABLE, 'version');
}
/**
* @inheritdoc
*/
public function put(): string
{
$connection = $this->getConnection();
$table = $this->getMainTable();
$uuid = uniqid('version-');
$version = $this->getVersionFromDb();
if ($version !== '') {
$connection->update($table, ['version' => $uuid]);
} else {
$connection->insert($table, ['version' => $uuid]);
}
return $uuid;
}
/**
* @inheritdoc
*/
public function getLatestVersion(): string
{
return $this->getVersionFromDb();
}
/**
* Returns version form DB or null.
*
* @return string
*/
private function getVersionFromDb(): string
{
$select = $this->getConnection()->select()->from(
$this->getTable(self::QUEUE_POISON_PILL_TABLE),
'version'
);
$result = $this->getConnection()->fetchOne($select);
return (string)$result;
}
}