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<?php |
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namespace hamburgscleanest\GuzzleAdvancedThrottle\Middleware; |
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use hamburgscleanest\GuzzleAdvancedThrottle\RequestLimitRuleset; |
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use Psr\Http\Message\RequestInterface; |
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use Symfony\Component\HttpKernel\Exception\TooManyRequestsHttpException; |
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/** |
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* Class ThrottleMiddleware |
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* @package hamburgscleanest\GuzzleAdvancedThrottle\Middleware |
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*/ |
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class ThrottleMiddleware |
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{ |
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/** @var RequestLimitRuleset */ |
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private $_requestLimitRuleset; |
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/** |
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* ThrottleMiddleware constructor. |
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* @param RequestLimitRuleset $requestLimitRuleset |
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*/ |
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public function __construct(RequestLimitRuleset $requestLimitRuleset) |
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{ |
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$this->_requestLimitRuleset = $requestLimitRuleset; |
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} |
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/** |
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* @return callable |
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*/ |
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public function __invoke() : callable |
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{ |
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return $this->handle(); |
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} |
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/** |
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* @return callable |
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* @throws \Symfony\Component\HttpKernel\Exception\TooManyRequestsHttpException |
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* @throws \Exception |
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*/ |
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public function handle() : callable |
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{ |
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return function(callable $handler) : callable |
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{ |
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return function(RequestInterface $request, array $options) use ($handler) |
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{ |
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return $this->_requestLimitRuleset->cache($request, $this->_requestHandler($handler, $request, $options)); |
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}; |
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}; |
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} |
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/** |
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* @param callable $handler |
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* @param RequestInterface $request |
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* @param array $options |
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* @return callable |
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* @throws \Exception |
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*/ |
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private function _requestHandler(callable $handler, RequestInterface $request, array $options) : callable |
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{ |
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return function() use ($handler, $request, $options) |
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{ |
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$requestLimitGroup = $this->_requestLimitRuleset->getRequestLimitGroup(); |
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if (!$requestLimitGroup->canRequest($request, $options)) |
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{ |
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throw new TooManyRequestsHttpException( |
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$requestLimitGroup->getRetryAfter(), |
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'The rate limit was exceeded. Please try again later.' |
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); |
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} |
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return $handler($request, $options); |
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}; |
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} |
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} |
hamburgscleanest /
guzzle-advanced-throttle
