Psr7RequestValueResolver.php

<?php

namespace Drupal\Core\Controller\ArgumentResolver;

use Psr\Http\Message\ServerRequestInterface;
use Symfony\Bridge\PsrHttpMessage\HttpMessageFactoryInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Controller\ValueResolverInterface;
use Symfony\Component\HttpKernel\ControllerMetadata\ArgumentMetadata;

/**
 * Yields a PSR7 request object based on the request object passed along.
 */
final class Psr7RequestValueResolver implements ValueResolverInterface {
    
    /**
     * The PSR-7 converter.
     *
     * @var \Symfony\Bridge\PsrHttpMessage\HttpMessageFactoryInterface
     */
    protected $httpMessageFactory;
    
    /**
     * Constructs a new ControllerResolver.
     *
     * @param \Symfony\Bridge\PsrHttpMessage\HttpMessageFactoryInterface $http_message_factory
     *   The PSR-7 converter.
     */
    public function __construct(HttpMessageFactoryInterface $http_message_factory) {
        $this->httpMessageFactory = $http_message_factory;
    }
    
    /**
     * {@inheritdoc}
     */
    public function resolve(Request $request, ArgumentMetadata $argument) : array {
        return $argument->getType() === ServerRequestInterface::class ? [
            $this->httpMessageFactory
                ->createRequest($request),
        ] : [];
    }

}