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<?php |
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namespace Chadicus\Psr\Http\ServerMiddleware; |
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use Chadicus\Psr\Middleware\MiddlewareInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* Middleware for limiting client requests. |
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*/ |
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final class RateLimitMiddleware implements MiddlewareInterface |
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{ |
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/** |
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* @var ClientExtractorInterface |
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*/ |
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private $clientExtractor; |
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/** |
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* @var LimitedResponseFactoryInterface |
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*/ |
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private $responseFactory; |
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/** |
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* Create a new instance of the middleware. |
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* |
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* @param ClientExtractorInterface $clientExtractor Obtains the client from the HTTP request. |
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* @param LimitedResponseFactoryInterface $responseFactory Factory object for creating 429 responses. |
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*/ |
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public function __construct( |
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ClientExtractorInterface $clientExtractor, |
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LimitedResponseFactoryInterface $responseFactory |
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) { |
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$this->clientExtractor = $clientExtractor; |
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$this->responseFactory = $responseFactory; |
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} |
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/** |
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* Execute this middleware. |
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* |
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* @param ServerRequestInterface $request The PSR7 request. |
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* @param ResponseInterface $response The PSR7 response. |
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* @param callable $next The Next middleware. |
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* |
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* @return ResponseInterface |
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*/ |
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public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next) |
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{ |
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$client = $this->clientExtractor->extract($request); |
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if (!$client->canMakeRequest($request)) { |
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return $this->responseFactory->createResponse($client); |
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} |
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return $next($request, $response); |
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} |
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} |
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chadicus /
psr-middleware-ratelimit
