/**
* Handles a Request.
*
* @param Symfony\Components\HttpKernel\Request $request A Request instance
* @param integer $type The type of the request (one of HttpKernelInterface::MASTER_REQUEST, HttpKernelInterface::FORWARDED_REQUEST, or HttpKernelInterface::EMBEDDED_REQUEST)
* @param Boolean $raw Whether to catch exceptions or not (this is NOT used in this context)
*
* @return Symfony\Components\HttpKernel\Response A Response instance
*/
public function handle(Request $request = null, $type = HttpKernelInterface::MASTER_REQUEST, $raw = false)
{
// FIXME: catch exceptions and implement a 500 error page here? -> in Varnish, there is a built-it error page mechanism
if (null === $request) {
$request = new Request();
}
if (HttpKernelInterface::MASTER_REQUEST === $type) {
$this->traces = array();
$this->request = $request;
}
$this->traces[$request->getMethod() . ' ' . $request->getPathInfo()] = array();
if (!$request->isMethodSafe($request)) {
$response = $this->invalidate($request);
} elseif ($request->headers->has('expect')) {
$response = $this->pass($request);
} else {
$response = $this->lookup($request);
}
$response->isNotModified($request);
if ('head' === strtolower($request->getMethod())) {
$response->setContent('');
} else {
$this->restoreResponseBody($response);
}
if (HttpKernelInterface::MASTER_REQUEST === $type && $this->options['debug']) {
$response->headers->set('X-Symfony-Cache', $this->getLog());
}
return $response;
}
