Updated to expressive 3

module/Core/src/Middleware/QrCodeCacheMiddleware.php

@@ -4,10 +4,10 @@ declare(strict_types=1);
 namespace Shlinkio\Shlink\Core\Middleware;
 
 use Doctrine\Common\Cache\Cache;
-use Interop\Http\ServerMiddleware\DelegateInterface;
-use Interop\Http\ServerMiddleware\MiddlewareInterface;
 use Psr\Http\Message\ResponseInterface as Response;
 use Psr\Http\Message\ServerRequestInterface as Request;
+use Psr\Http\Server\MiddlewareInterface;
+use Psr\Http\Server\RequestHandlerInterface;
 use Zend\Diactoros\Response as DiactResp;
 
 class QrCodeCacheMiddleware implements MiddlewareInterface
@@ -27,11 +27,11 @@ class QrCodeCacheMiddleware implements MiddlewareInterface
      * to the next middleware component to create the response.
      *
      * @param Request $request
-     * @param DelegateInterface $delegate
+     * @param RequestHandlerInterface $handler
      *
      * @return Response
      */
-    public function process(Request $request, DelegateInterface $delegate)
+    public function process(Request $request, RequestHandlerInterface $handler): Response
     {
         $cacheKey = $request->getUri()->getPath();
 
@@ -45,7 +45,7 @@ class QrCodeCacheMiddleware implements MiddlewareInterface
 
         // If not, call the next middleware and cache it
         /** @var Response $resp */
-        $resp = $delegate->process($request);
+        $resp = $handler->handle($request);
         $this->cache->save($cacheKey, [
             'body' => $resp->getBody()->__toString(),
             'content-type' => $resp->getHeaderLine('Content-Type'),