php__silex__book/src/demo/Middleware/Finish.php

<?php

namespace demo\Middleware;

use Silex\Application;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

/**
 * Finish middleware is invoked after the response has been sent.
 *
 * @package demo\Middleware
 */
class Finish {

  /**
   * Arguments for finish() middleware are fixed, unlike those of controllers.
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   * @param \Symfony\Component\HttpFoundation\Response $response
   * @param \Silex\Application $app
   */
  public static function handle(Request $request, Response $response, Application $app) {
    /** @var \Psr\Log\LoggerInterface $logger */
    $logger = $app['logger'];
    $path = $request->getPathInfo();
    $type = get_class($response);
    $status = $response->getStatusCode();
    // Use a warning to avoid being filtered out by the default Monolog config.
    $logger->info("Returned a $status $type on $path");
  }
}