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57 lines
1.7 KiB
57 lines
1.7 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\mutex; |
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use Yii; |
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use yii\base\InvalidConfigException; |
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/** |
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* @author resurtm <resurtm@gmail.com> |
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* @since 2.0 |
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*/ |
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class MysqlMutex extends Mutex |
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{ |
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/** |
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* Initializes MySQL specific mutex component implementation. |
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* @throws InvalidConfigException if [[db]] is not MySQL connection. |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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if ($this->db->driverName !== 'mysql') { |
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throw new InvalidConfigException('In order to use MysqlMutex connection must be configured to use MySQL database.'); |
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} |
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} |
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/** |
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* This method should be extended by concrete mutex implementations. Acquires lock by given name. |
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* @param string $name of the lock to be acquired. |
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* @param integer $timeout to wait for lock to become released. |
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* @return boolean acquiring result. |
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* @see http://dev.mysql.com/doc/refman/5.0/en/miscellaneous-functions.html#function_get-lock |
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*/ |
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protected function acquireLock($name, $timeout = 0) |
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{ |
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return (boolean)$this->db |
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->createCommand('SELECT GET_LOCK(:name, :timeout)', array(':name' => $name, ':timeout' => $timeout)) |
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->queryScalar(); |
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} |
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/** |
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* This method should be extended by concrete mutex implementations. Releases lock by given name. |
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* @param string $name of the lock to be released. |
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* @return boolean release result. |
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* @see http://dev.mysql.com/doc/refman/5.0/en/miscellaneous-functions.html#function_release-lock |
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*/ |
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protected function releaseLock($name) |
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{ |
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return (boolean)$this->db |
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->createCommand('SELECT RELEASE_LOCK(:name)', array(':name' => $name)) |
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->queryScalar(); |
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} |
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}
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