Cross CacheController.php

CacheController.php

<?php

namespace AppBundle\Controller;

use Guzzle\Http\Client;
use Sulu\Bundle\WebsiteBundle\Controller\CacheController as SuluCacheController;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;

class CacheController extends SuluCacheController
{
    /**
     * {@inheritdoc}
     */
    public function clearAction(Request $request = null)
    {
        $response = parent::clearAction();

        $otherIp = $this->getOtherServer();

        if ($request && $otherIp && $request->getClientIp() != $otherIp) {
            $this->callOtherServer($request);
        }

        return $response;
    }

    /**
     * {@inheritdoc}
     */
    public function clearWebsiteAction(Request $request)
    {
        if (in_array(
            $request->getClientIp(),
            [
                $this->getOtherServer(),
                '127.0.0.1'
            ]
        )) {
            $response = parent::clearAction();

            return $response;
        } else {
            throw new AccessDeniedHttpException(sprintf('Cache clear is not allowed with IP: %s', $request->getClientIp()));
        }
    }

    /**
     * @param Request $request
     *
     * @return bool
     */
    protected function callOtherServer(Request $request)
    {
        $domain = $this->getOtherServer('domain');
        if (!$domain) {
            return null;
        }

        $url = $request->getScheme() . '://' . $domain . '/_cache/clear';

        $client = new Client($url);
        $request = $client->createRequest();
        $request->send();

        return true;
    }

    /**
     * @return mixed|null
     */
    protected function getOtherServer($key = 'ip')
    {
        if (!$this->container->hasParameter('other_server_' . $key)) {
            return null;
        }

        $otherServerIp = $this->container->getParameter('other_server_' . $key);

        if (!$otherServerIp) {
            return null;
        }

        return $otherServerIp;
    }
}