Graviton\CacheBundle\Listener\ProxyCacheListener

Complexity

Total Complexity

5

Size/Duplication

Total Lines	85
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Test Coverage

Coverage

0%

Importance

Changes	1
Bugs	0	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	setResponseTagger()	0	4	1
A	setCacheManager()	0	4	1
A	onKernelResponse()	0	20	3

<?php
/**
 * listener that invalidates a server cache in front of graviton, if so configured
 */
namespace Graviton\CacheBundle\Listener;

use FOS\HttpCacheBundle\CacheManager;
use FOS\HttpCacheBundle\Http\SymfonyResponseTagger;
use Symfony\Component\HttpKernel\Event\FilterResponseEvent;

/**
 * @author   List of contributors <https://github.com/libgraviton/graviton/graphs/contributors>
 * @license  http://opensource.org/licenses/gpl-license.php GNU Public License
 * @link     http://swisscom.ch
 */
class ProxyCacheListener
{

    /**
     * @var SymfonyResponseTagger
     */
    private $responseTagger;

    /**
     * @var CacheManager
     */
    private $cacheManager;

    /**
     * which methods should be tagged
     *
     * @var array
     */
    private $tagOnMethodes = [
        'GET',
        'OPTIONS',
        'HEAD'
    ];

    /**
     * tag that every item should receive
     *
     * @var array
     */
    private $baseTags = [
        'all'
    ];

    /**
     * set ResponseTagger
     *
     * @param SymfonyResponseTagger $responseTagger responseTagger
     *
     * @return void
     */
    public function setResponseTagger($responseTagger)
    {
        $this->responseTagger = $responseTagger;
    }

    /**
     * set CacheManager
     *
     * @param CacheManager $cacheManager cacheManager
     *
     * @return void
     */
    public function setCacheManager($cacheManager)
    {
        $this->cacheManager = $cacheManager;
    }

    /**
     * add a IfNoneMatch header to the response
     *
     * @param FilterResponseEvent $event response listener event
     *
     * @return void
     */
    public function onKernelResponse(FilterResponseEvent $event)
    {

        $routeName = $event->getRequest()->get('_route');
        $routeParts = explode('.', $routeName);
        $routeType = end($routeParts);
        array_pop($routeParts);
        $tags = [implode('.', $routeParts)];

        if (in_array($event->getRequest()->getMethod(), $this->tagOnMethodes)) {
            $this->responseTagger->addTags(array_merge($this->baseTags, $tags));
        } else {
            // if something is done within i18n, we delete everything
            if ($routeParts[1] == 'i18n') {
                $tags[] = 'all';
            }

            $this->cacheManager->invalidateTags($tags);
        }
    }
}