getDirectoryInfo example

    /** * Returns cache information * * @param Enlight_Controller_Request_Request|null $request * * @return array */
    public function getHttpCacheInfo($request = null)
    {
        $info = $this->httpCache['enabled'] ? $this->getDirectoryInfo($this->httpCache['cache_dir']) : [];

        $info['name'] = 'Http-Reverse-Proxy';
        $info['backend'] = 'Unknown';

        if ($request && $request->getHeader('Surrogate-Capability')) {
            $info['backend'] = $request->getHeader('Surrogate-Capability');
        }

        return $info;
    }