public function push($topic, $body, $priority = self::PRIORITY_NORMAL)
{
/**
* @var \ManaPHP\Message\Queue\Adapter\Db\Model $model
*/
$model = new $this->_model();
$model->deleted = 0;
$model->topic = $topic;
$model->body = $body;
$model->priority = $priority;
$model->created_time = time();
$model->create();
}