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<?php |
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/** |
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* Traffic monitor |
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* User: moyo |
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* Date: 2018/6/6 |
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* Time: 11:38 AM |
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*/ |
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namespace Carno\Web\Handlers; |
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use Carno\Chain\Layered; |
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use Carno\Coroutine\Context; |
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use Carno\HTTP\Standard\Response; |
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use Carno\Monitor\Metrics; |
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use Throwable; |
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class TrafficMonitor implements Layered |
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{ |
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/** |
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* @var Metrics\Counter |
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*/ |
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private $ttRequests = null; |
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/** |
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* @var Metrics\Histogram |
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*/ |
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private $ttResponses = null; |
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/** |
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* @var Metrics\Counter |
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*/ |
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private $ttExceptions = null; |
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/** |
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* @var Metrics\Gauge |
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*/ |
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private $ttProcessing = null; |
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/** |
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* @var array |
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*/ |
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private $ttStatusCodes = []; |
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/** |
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* TrafficMonitor constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->ttRequests = Metrics::counter()->named('http.requests.all'); |
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$this->ttResponses = Metrics::histogram()->named('http.responses.time')->fixed(5, 20, 50, 200, 500, 1000); |
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$this->ttExceptions = Metrics::counter()->named('http.exceptions.all'); |
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$this->ttProcessing = Metrics::gauge()->named('http.processing.now'); |
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} |
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/** |
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* @param int $status |
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* @return Metrics\Counter |
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*/ |
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private function cc(int $status) : Metrics\Counter |
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{ |
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return $this->ttStatusCodes[$status] ?? $this->ttStatusCodes[$status] = |
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Metrics::counter() |
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->named('http.responses.code') |
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->labels(['code' => $status]) |
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; |
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} |
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/** |
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* @param mixed $message |
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* @param Context $ctx |
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* @return mixed |
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*/ |
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public function inbound($message, Context $ctx) |
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{ |
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$this->requestBegin($ctx); |
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$this->ttRequests->inc(); |
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$this->ttProcessing->inc(); |
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return $message; |
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} |
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/** |
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* @param mixed $message |
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* @param Context $ctx |
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* @return mixed |
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*/ |
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public function outbound($message, Context $ctx) |
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{ |
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$this->ttProcessing->dec(); |
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$this->requestEnd($ctx); |
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return $message; |
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} |
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/** |
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* @param Throwable $e |
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* @param Context $ctx |
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* @throws Throwable |
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*/ |
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public function exception(Throwable $e, Context $ctx) |
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{ |
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$this->ttProcessing->dec(); |
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$this->ttExceptions->inc(); |
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$this->requestEnd($ctx); |
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throw $e; |
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} |
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/** |
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* @param Context $ctx |
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*/ |
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private function requestBegin(Context $ctx) : void |
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{ |
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$ctx->set('tm-r-begin', microtime(true)); |
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} |
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/** |
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* @param Context $ctx |
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*/ |
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private function requestEnd(Context $ctx) : void |
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{ |
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/** |
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* @var Response $response |
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*/ |
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if ($response = $ctx->get(IngressWrapper::RESPONDING)) { |
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$this->cc($response->getStatusCode())->inc(); |
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} |
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$this->ttResponses->observe((microtime(true) - $ctx->get('tm-r-begin') ?? 0) * 1000); |
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} |
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} |
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carno-php /
web
