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<?php |
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/** |
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* Class RecursiveDispatcher |
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* |
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* A simple middleware dispatcher based on Slim |
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* |
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* @see https://github.com/slimphp/Slim/blob/de07f779d229ec06080259a816b0740de830438c/Slim/MiddlewareDispatcher.php |
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* |
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* @filesource RecursiveDispatcher.php |
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* @created 15.04.2020 |
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* @package chillerlan\HTTP\Psr15; |
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* @author smiley <[email protected]> |
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* @copyright 2020 smiley |
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* @license MIT |
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*/ |
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namespace chillerlan\HTTP\Psr15;; |
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use Psr\Http\Message\{ResponseInterface, ServerRequestInterface}; |
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use Psr\Http\Server\{MiddlewareInterface, RequestHandlerInterface}; |
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class RecursiveDispatcher implements RequestHandlerInterface{ |
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/** |
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* Tip of the middleware call stack |
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*/ |
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protected RequestHandlerInterface $tip; |
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/** |
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* RecursiveDispatcher constructor. |
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*/ |
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public function __construct(RequestHandlerInterface $kernel){ |
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$this->tip = $kernel; |
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} |
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/** |
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* Add a new middleware to the stack |
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* |
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* Middleware are organized as a stack. That means middleware |
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* that have been added before will be executed after the newly |
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* added one (last in, first out). |
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*/ |
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public function add(MiddlewareInterface $middleware):RecursiveDispatcher{ |
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$this->tip = new class ($middleware, $this->tip) implements RequestHandlerInterface{ |
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private MiddlewareInterface $middleware; |
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private RequestHandlerInterface $next; |
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public function __construct(MiddlewareInterface $middleware, RequestHandlerInterface $next){ |
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$this->middleware = $middleware; |
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$this->next = $next; |
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} |
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public function handle(ServerRequestInterface $request):ResponseInterface{ |
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return $this->middleware->process($request, $this->next); |
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} |
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}; |
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return $this; |
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} |
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/** |
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* @param \Psr\Http\Server\MiddlewareInterface[] $middlewareStack |
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* |
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* @return \chillerlan\HTTP\Psr15\RecursiveDispatcher |
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* @throws \chillerlan\HTTP\Psr15\MiddlewareException |
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*/ |
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public function addStack(iterable $middlewareStack):RecursiveDispatcher{ |
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foreach($middlewareStack as $middleware){ |
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if(!$middleware instanceof MiddlewareInterface){ |
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throw new MiddlewareException('invalid middleware'); |
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} |
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$this->add($middleware); |
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} |
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return $this; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function handle(ServerRequestInterface $request):ResponseInterface{ |
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return $this->tip->handle($request); |
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} |
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} |
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chillerlan /
php-httpinterface
