<?php

/**
 * @file
 * Definition of Drupal\legacy_redirect\EventSubscriber\LegacyRedirectSubscriber.
 */

namespace Drupal\legacy_redirect\EventSubscriber;

use Symfony\Component\HttpFoundation\Request;

/**
 * Base class for listeners that are manipulating the path.
 */
class LegacyRedirectSubscriber implements EventSubscriberInterface {
   /**
    * Detects a q=path/to/page style request and performs a redirect.
    *
    * @param Symfony\Component\HttpKernel\Event\GetResponseEvent $event
    *   The Event to process.
    */
  public function onKernelRequestLegacy(GetResponseEvent $event) {
    $request = $event->getRequest();
    $queryString = $request->getQueryString();

    print_r($queryString);
  }

}