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<?php |
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namespace Burrow\Event\Listener\Metric; |
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use Burrow\Clock; |
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use Burrow\Event\Listener\ListenerException; |
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use Burrow\Event\MessageConsumed; |
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use Burrow\Event\MessageReceived; |
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use Burrow\Metric\MetricService; |
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use Burrow\RealClock; |
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use League\Event\EventInterface; |
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use League\Event\ListenerInterface; |
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class SendMetricOnMessageConsumed implements ListenerInterface |
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{ |
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/** @var MetricService */ |
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private $metricService; |
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/** @var Clock */ |
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private $clock; |
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/** @var null|float */ |
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private $messageReceivedAt; |
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/** |
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* SendMetricOnMessageConsumed constructor. |
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* |
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* @param MetricService $metricService |
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* @param Clock|null $clock |
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*/ |
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public function __construct(MetricService $metricService, Clock $clock = null) |
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{ |
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$this->metricService = $metricService; |
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$this->clock = $clock ?: new RealClock(); |
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} |
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/** |
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* @param EventInterface | MessageConsumed $event |
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* |
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* @throws ListenerException |
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*/ |
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public function handle(EventInterface $event) |
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{ |
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if ($event instanceof MessageReceived) { |
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$this->messageReceivedAt = $this->clock->timestampInMs(); |
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return; |
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} |
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if (!($event instanceof MessageConsumed)) { |
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throw ListenerException::badEventGiven($event); |
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} |
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$this->metricService->timing( |
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'worker.message_consumed', |
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$this->clock->timestampInMs() - $this->messageReceivedAt |
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); |
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} |
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public function isListener($listener) |
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{ |
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return $listener === $this; |
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} |
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} |
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Evaneos /
Burrow
