Piwik\Updates\Updates_1_8_4_b1::doUpdate PHP Метод

    public function doUpdate(Updater $updater)
    {
        try {
            self::enableMaintenanceMode();
            $updater->executeMigrations(__FILE__, $this->getMigrations($updater));
            self::disableMaintenanceMode();
        } catch (\Exception $e) {
            self::disableMaintenanceMode();
            throw $e;
        }
    }