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<?php |
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declare(strict_types=1); |
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namespace Yiisoft\Yii\Web\RateLimiter; |
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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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final class RateLimiter implements MiddlewareInterface |
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{ |
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private int $limit = 1000; |
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private CounterInterface $counter; |
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private ResponseFactoryInterface $responseFactory; |
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private bool $autoincrement = true; |
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public function __construct(CounterInterface $counter, ResponseFactoryInterface $responseFactory) |
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{ |
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$this->counter = $counter; |
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$this->responseFactory = $responseFactory; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$this->counter->init($request); |
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if (!$this->isAllowed()) { |
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return $this->createErrorResponse(); |
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} |
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if ($this->autoincrement) { |
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$this->counter->increment(); |
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} |
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return $handler->handle($request); |
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} |
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public function withLimit(int $limit): self |
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{ |
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$this->limit = $limit; |
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return $this; |
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} |
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public function setAutoIncrement(bool $increment): self |
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{ |
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$this->autoincrement = $increment; |
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return $this; |
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} |
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private function createErrorResponse(): ResponseInterface |
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{ |
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$response = $this->responseFactory->createResponse(429); |
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$response->getBody()->write('Too Many Requests'); |
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return $response; |
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} |
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private function isAllowed(): bool |
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{ |
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return $this->counter->getCounterValue() < $this->limit; |
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} |
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} |
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yiisoft /
yii-web
