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<?php |
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/** |
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* PHP version 5.4 and 7 |
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* |
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* @package Payever\Core |
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* @author Hennadii.Shymanskyi <[email protected]> |
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* @copyright 2017-2019 payever GmbH |
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* @license MIT <https://opensource.org/licenses/MIT> |
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*/ |
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namespace Payever\ExternalIntegration\Core\Lock; |
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/** |
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* PHP version 5.4 and 7 |
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* |
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* @package Payever\Core |
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* @author Hennadii.Shymanskyi <[email protected]> |
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* @copyright 2017-2019 payever GmbH |
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* @license MIT <https://opensource.org/licenses/MIT> |
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*/ |
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class MySQLLock implements LockInterface |
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{ |
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/** @var \PDO */ |
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private $pdo; |
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/** @var string|null */ |
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private $currentDatabase; |
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public function __construct(\PDO $pdo) |
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{ |
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$this->pdo = $pdo; |
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} |
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/** |
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* @inheritdoc |
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* |
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* @throws \RuntimeException |
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*/ |
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public function acquireLock($lockName, $timeout) |
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{ |
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$statement = $this->pdo->prepare("SELECT GET_LOCK(?,?)"); |
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$statement->execute(array( |
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$this->prepareLockName($lockName), |
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$timeout, |
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)); |
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$result = $statement->fetch(\PDO::FETCH_NUM); |
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if ($result[0] !== 1) { |
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throw new \RuntimeException(sprintf('Unable to acquire lock with name %s', $lockName)); |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function releaseLock($lockName) |
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{ |
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$statement = "SELECT RELEASE_LOCK({$this->prepareLockName($lockName)})"; |
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$this->pdo->exec($statement); |
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} |
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/** |
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* @param string $lockName |
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* @return string |
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*/ |
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private function prepareLockName($lockName) |
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{ |
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return $this->pdo->quote("{$this->getCurrentDatabase()}.{$lockName}"); |
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} |
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/** |
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* @return string|null |
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*/ |
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private function getCurrentDatabase() |
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{ |
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if (null === $this->currentDatabase) { |
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$this->currentDatabase = $this->pdo->query('SELECT DATABASE()')->fetchColumn(); |
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} |
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return $this->currentDatabase; |
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} |
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} |
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payeverworldwide /
sdk-php
