/**
* This method defines the workflow from the HTTP Request and ends with a Response.
* HttpKernel allows us to use event listeners and does the work by dispatching those events.
* Basically we are creating an EventDispatcher and a controller resolver in this handle method.
*
* @param Request $request The Request instance
* @param int $type The default type request [MASTER_REQUEST = 1, SUB_REQUEST = 2]
* @param bool $catch The option to catch exceptions or not
*
* @throws \ResourceNotFoundException When a controller not found occurs during processing
* @throws \Exception When an Exception occurs during processing
*
* @return Response The current Response interface
*
* @api
*/
public function handle(Request $request, int $type = HttpKernelInterface::MASTER_REQUEST, bool $catch = true) : Response
{
$this->matcher->getContext()->fromRequest($request);
try {
$request->attributes->add($this->matcher->match($request->getPathInfo()));
$controller = $this->resolver->getController($request);
$arguments = 'boolean' === gettype($controller) ? $this->throwControllerResolverExceptionError() : $this->resolver->getArguments($request, $controller);
$response = call_user_func_array($controller, $arguments);
} catch (ResourceNotFoundException $e) {
$response = new Response('Not Found', 404);
} catch (\Exception $e) {
$response = new Response('An error occurred', 500);
}
/* Dispatch a response event */
$this->dispatcher->dispatch('response', new ResponseEvent($response, $request));
return $response;
}