This is achieved by using a "lock" mechanism. Each possibly concurrent thread cooperates by acquiring a lock before accessing the corresponding data. Usage example: if ($mutex->acquire($mutexName)) { business logic execution } else { execution is blocked! } This is a base class, which should be extended in order to implement the actual lock mechanism.
Since: 2.0
Author: resurtm (resurtm@gmail.com)
Inheritance: extends yii\base\Component
 /**
  * Initializes MySQL specific mutex component implementation.
  * @throws InvalidConfigException if [[db]] is not MySQL connection.
  */
 public function init()
 {
     parent::init();
     if ($this->db->driverName !== 'mysql') {
         throw new InvalidConfigException('In order to use MysqlMutex connection must be configured to use MySQL database.');
     }
 }
 /**
  * Initializes generic database table based mutex implementation.
  * @throws InvalidConfigException if [[db]] is invalid.
  */
 public function init()
 {
     parent::init();
     if (is_string($this->db)) {
         $this->db = Yii::$app->getComponent($this->db);
     }
     if (!$this->db instanceof Connection) {
         throw new InvalidConfigException('Mutex::db must be either a DB connection instance or the application component ID of a DB connection.');
     }
 }
Beispiel #3
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 /**
  * Initializes generic database table based mutex implementation.
  * @throws InvalidConfigException if [[db]] is invalid.
  */
 public function init()
 {
     parent::init();
     $this->db = Instance::ensure($this->db, Connection::className());
 }
 /**
  * Acquires current action lock.
  * @return boolean lock acquiring result.
  */
 protected function acquireMutex()
 {
     $this->mutex = Instance::ensure($this->mutex, Mutex::className());
     return $this->mutex->acquire($this->composeMutexName());
 }
 /**
  * @return \yii\mutex\Mutex
  * @throws \yii\base\InvalidConfigException
  */
 protected function getMutex()
 {
     return Instance::ensure($this->mutexID, Mutex::className());
 }
Beispiel #6
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 /**
  * @inheritdoc
  */
 public function init()
 {
     parent::init();
     $this->cache = is_string($this->cache) ? Yii::$app->get($this->cache, false) : $this->cache;
 }