ConcreteMicroKernel.php

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Bundle\FrameworkBundle\Tests\Kernel;

use Psr\Log\NullLogger;
use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
use Symfony\Component\Config\Loader\LoaderInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Event\ExceptionEvent;
use Symfony\Component\HttpKernel\Kernel;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;

class ConcreteMicroKernel extends Kernel implements EventSubscriberInterface
{
    use MicroKernelTrait;

    private string $cacheDir;

    public function onKernelException(ExceptionEvent $event)
    {
        if ($event->getThrowable() instanceof Danger) {
            $event->setResponse(new Response('It\'s dangerous to go alone. Take this ⚔'));
        }
    }

    public function halloweenAction()
    {
        return new Response('halloween');
    }

    public function dangerousAction()
    {
        throw new Danger();
    }

    public function registerBundles(): iterable
    {
        return [
            new FrameworkBundle(),
        ];
    }

    public function getCacheDir(): string
    {
        return $this->cacheDir = sys_get_temp_dir().'/sf_micro_kernel';
    }

    public function getLogDir(): string
    {
        return $this->cacheDir;
    }

    public function __sleep(): array
    {
        throw new \BadMethodCallException('Cannot serialize '.__CLASS__);
    }

    public function __wakeup(): void
    {
        throw new \BadMethodCallException('Cannot unserialize '.__CLASS__);
    }

    protected function configureRoutes(RoutingConfigurator $routes): void
    {
        $routes->add('halloween', '/')->controller('kernel::halloweenAction');
        $routes->add('danger', '/danger')->controller('kernel::dangerousAction');
    }

    protected function configureContainer(ContainerBuilder $c, LoaderInterface $loader): void
    {
        $c->register('logger', NullLogger::class);
        $c->loadFromExtension('framework', [
            'annotations' => false,
            'http_method_override' => false,
            'handle_all_throwables' => true,
            'php_errors' => ['log' => true],
            'secret' => '$ecret',
            'router' => ['utf8' => true],
        ]);

        $c->setParameter('halloween', 'Have a great day!');
        $c->register('halloween', 'stdClass')->setPublic(true);
    }

    public static function getSubscribedEvents(): array
    {
        return [
            KernelEvents::EXCEPTION => 'onKernelException',
        ];
    }
}

class Danger extends \RuntimeException
{
}