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<?php |
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/** |
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* This file is part of slick/http package |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Slick\Http; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Slick\Http\PhpEnvironment; |
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use Slick\Http\PhpEnvironment\MiddlewareRunnerInterface; |
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use Slick\Http\Server\MiddlewareCollection; |
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use Slick\Http\Server\MiddlewareCollectionInterface; |
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use Slick\Http\Server\MiddlewareInterface; |
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/** |
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* HTTP Server handler and middleware runner |
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* |
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* @package Slick\Http |
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*/ |
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class Server implements MiddlewareRunnerInterface |
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{ |
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/** |
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* @var ServerRequestInterface |
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*/ |
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private $request; |
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/** |
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* @var ResponseInterface|PhpEnvironment\Response |
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*/ |
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private $response; |
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/** |
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* @var MiddlewareCollectionInterface |
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*/ |
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private $middlewareCollection; |
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/** |
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* Server request handler and middleware runner. |
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* |
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* @param ServerRequestInterface|null $req |
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* @param ResponseInterface|null $res |
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*/ |
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public function __construct( |
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ServerRequestInterface $req = null, ResponseInterface $res = null |
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) { |
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$this->request = $req; |
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$this->response = $res; |
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$this->middlewareCollection = new MiddlewareCollection(); |
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} |
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/** |
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* Set HTTP request message |
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* |
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* @param ServerRequestInterface $request |
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* |
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* @return Server |
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*/ |
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public function setRequest(ServerRequestInterface $request) |
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{ |
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$this->request = $request; |
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return $this; |
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} |
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/** |
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* Adds a middleware object to the stack |
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* |
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* @param MiddlewareInterface $middleware |
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* |
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* @return self|$this|\Slick\Http\Server\MiddlewareRunnerInterface |
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*/ |
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public function add(MiddlewareInterface $middleware) |
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{ |
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$this->middlewareCollection->append($middleware); |
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return $this; |
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} |
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/** |
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* Sets a full list of middleware objects tho this runner |
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* |
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* @param MiddlewareCollectionInterface $objects |
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* |
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* @return self|$this|\Slick\Http\Server\MiddlewareRunnerInterface |
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*/ |
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public function setMiddlewareCollection( |
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MiddlewareCollectionInterface $objects |
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) |
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{ |
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$this->middlewareCollection = $objects; |
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return $this; |
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} |
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/** |
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* Gets the middleware collection object |
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* |
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* @return MiddlewareCollection|MiddlewareCollectionInterface |
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*/ |
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public function getMiddlewareCollection() |
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{ |
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return $this->middlewareCollection; |
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} |
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/** |
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* Runs all the stack and return the response |
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* |
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* @return ResponseInterface|Response |
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*/ |
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public function run() |
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{ |
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$middleware = $this->setObjectDependency(); |
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return $middleware->handle($this->request, $this->getResponse()); |
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} |
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/** |
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* Initializes and reuses the server response |
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* |
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* @return ResponseInterface|PhpEnvironment\Response |
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*/ |
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protected function getResponse() |
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{ |
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if (null === $this->response) { |
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$this->response = new PhpEnvironment\Response(); |
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} |
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return $this->response; |
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} |
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/** |
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* Sets the middleware objects dependency |
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* |
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* This method returns the middleware that starts the chain |
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* |
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* @return null|MiddlewareInterface |
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*/ |
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protected function setObjectDependency() |
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{ |
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$reverse = array_reverse($this->middlewareCollection->asArray()); |
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$last = null; |
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/** @var MiddlewareInterface $object */ |
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foreach ($reverse as $object) { |
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$object->setNext($last); |
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$last = $object; |
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} |
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return $last; |
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} |
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} |
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slickframework /
http
