Psr7Middlewares\Middleware\AccessLog::__invoke PHP Method

    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next)
    {
        if (!self::hasAttribute($request, ClientIp::KEY)) {
            throw new RuntimeException('AccessLog middleware needs ClientIp executed before');
        }
        $response = $next($request, $response);
        $message = $this->combined ? self::combinedFormat($request, $response) : self::commonFormat($request, $response);
        if ($response->getStatusCode() >= 400 && $response->getStatusCode() < 600) {
            $this->logger->error($message);
        } else {
            $this->logger->info($message);
        }
        return $response;
    }