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<?php |
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/* |
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MIT License |
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Copyright (c) 2010 - 2018 Peter Petermann |
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Permission is hereby granted, free of charge, to any person |
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obtaining a copy of this software and associated documentation |
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files (the "Software"), to deal in the Software without |
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restriction, including without limitation the rights to use, |
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copy, modify, merge, publish, distribute, sublicense, and/or sell |
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copies of the Software, and to permit persons to whom the |
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Software is furnished to do so, subject to the following |
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conditions: |
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The above copyright notice and this permission notice shall be |
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included in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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OTHER DEALINGS IN THE SOFTWARE. |
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*/ |
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namespace King23\Http; |
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use Psr\Container\ContainerInterface; |
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use Psr\Http\Message\ResponseFactoryInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Psr\Log\LoggerInterface; |
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class MiddlewareQueue implements MiddlewareQueueInterface, RequestHandlerInterface |
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{ |
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/** |
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* @var LoggerInterface |
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*/ |
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protected $log; |
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/** |
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* @var string[] |
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*/ |
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protected $queue = []; |
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/** |
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* @var ContainerInterface |
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*/ |
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protected $container; |
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/** |
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* @var ResponseFactoryInterface |
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*/ |
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private $responseFactory; |
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/** |
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* @param LoggerInterface $log |
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* @param ContainerInterface $container |
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* @param ResponseFactoryInterface $response |
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*/ |
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public function __construct(LoggerInterface $log, ContainerInterface $container, ResponseFactoryInterface $response) |
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{ |
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$this->log = $log; |
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$this->container = $container; |
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$this->responseFactory = $response; |
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} |
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/** |
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* register a classname as part of the middleware queue |
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* |
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* @param $className |
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* @return void |
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*/ |
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public function addMiddleware($className) |
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{ |
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$this->queue[] = $className; |
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} |
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/** |
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* execute the queue |
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* |
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* @param ServerRequestInterface $request |
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* @return ResponseInterface |
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* @throws MiddlewareDoesNotImplementInterfaceException |
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*/ |
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public function handle(ServerRequestInterface $request) : ResponseInterface { |
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return $this($request); |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @return ResponseInterface |
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* @throws MiddlewareDoesNotImplementInterfaceException |
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*/ |
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public function __invoke( |
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ServerRequestInterface $request |
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) { |
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// if the queue is empty, we have reached the lowest level |
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if(count($this->queue) == 0) { |
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return $this->responseFactory->createResponse(); |
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} |
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/** @var MiddlewareInterface $middleware */ |
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$middleware = $this->container->get(array_shift($this->queue)); |
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if (!($middleware instanceof MiddlewareInterface)) { |
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throw new MiddlewareDoesNotImplementInterfaceException(); |
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} |
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return $middleware->process($request, $this); |
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} |
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} |
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|
ppetermann /
king23
