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<?php |
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namespace hamburgscleanest\GuzzleAdvancedThrottle; |
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use hamburgscleanest\GuzzleAdvancedThrottle\Cache\Interfaces\StorageInterface; |
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use Psr\Http\Message\RequestInterface; |
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use SplObjectStorage; |
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/** |
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* Class RequestLimitGroup |
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* @package hamburgscleanest\GuzzleAdvancedThrottle |
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*/ |
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class RequestLimitGroup |
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{ |
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/** @var SplObjectStorage */ |
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private $_requestLimiters; |
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/** @var int */ |
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private $_retryAfter = 0; |
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/** |
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* RequestLimitGroup constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->_requestLimiters = new SplObjectStorage(); |
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} |
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/** |
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* @return RequestLimitGroup |
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*/ |
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public static function create() : self |
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{ |
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return new static(); |
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} |
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/** |
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* @return int |
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*/ |
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public function getRetryAfter() : int |
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{ |
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return $this->_retryAfter; |
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} |
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/** |
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* We have to cycle through all the limiters (no early return). |
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* The timers of each limiter have to be updated despite of another limiter already preventing the request. |
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* |
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* @param RequestInterface $request |
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* @param array $options |
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* @return bool |
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* @throws \Exception |
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*/ |
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public function canRequest(RequestInterface $request, array $options = []) : bool |
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{ |
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$groupCanRequest = true; |
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$this->_requestLimiters->rewind(); |
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while ($this->_requestLimiters->valid()) |
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{ |
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/** @var RequestLimiter $requestLimiter */ |
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$requestLimiter = $this->_requestLimiters->current(); |
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$canRequest = $requestLimiter->canRequest($request, $options); |
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if ($groupCanRequest && !$canRequest) |
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{ |
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$groupCanRequest = false; |
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$this->_retryAfter = $requestLimiter->getRemainingSeconds(); |
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} |
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$this->_requestLimiters->next(); |
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} |
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return $groupCanRequest; |
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} |
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/** |
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* @param RequestLimiter $requestLimiter |
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* @return RequestLimitGroup |
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*/ |
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public function addRequestLimiter(RequestLimiter $requestLimiter) : self |
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{ |
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$this->_requestLimiters->attach($requestLimiter); |
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return $this; |
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} |
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/** |
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* @param RequestLimiter $requestLimiter |
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* @return RequestLimitGroup |
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*/ |
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public function removeRequestLimiter(RequestLimiter $requestLimiter) : self |
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{ |
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$this->_requestLimiters->detach($requestLimiter); |
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return $this; |
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} |
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/** |
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* @return int |
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*/ |
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public function getRequestLimiterCount() : int |
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{ |
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return $this->_requestLimiters->count(); |
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} |
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/** |
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* @param string $host |
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* @param array $rules |
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* @param StorageInterface $storage |
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* @throws \Exception |
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*/ |
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public function addRules(string $host, array $rules, StorageInterface $storage) : void |
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{ |
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foreach ($rules as $rule) |
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{ |
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$this->addRequestLimiter( |
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RequestLimiter::createFromRule( |
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$host, |
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$rule, |
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$storage |
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) |
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); |
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} |
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} |
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} |
hamburgscleanest /
guzzle-advanced-throttle
