protected function registeLog()
    {
        $handler = new StreamHandler(
            $this->config->get('log.file'),
            $this->config->get('log.level', Logger::WARNING)
        );
        $handler->setFormatter(new LineFormatter("%datetime% > %level_name% > %message% %context% %extra%\n\n"));

        $logger = new Logger('yansongda.pay');
        $logger->pushHandler($handler);

        Log::setLogger($logger);
    }