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<?php |
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/** |
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* Copyright (c) 2017 Constantin Galbenu <[email protected]> |
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*/ |
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namespace Gica\Cqrs\Saga; |
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use Gica\Cqrs\Event\EventSubscriber; |
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use Gica\Cqrs\Event\EventWithMetaData; |
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use Gica\Cqrs\Saga\SagaEventTrackerRepository\ConcurentModificationException; |
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class SagasOnlyOnceEventDispatcher implements \Gica\Cqrs\Event\EventDispatcher |
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{ |
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/** @var EventSubscriber */ |
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private $eventSubscriber; |
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/** |
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* @var SagaEventTrackerRepository |
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*/ |
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private $trackerRepository; |
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public function __construct( |
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SagaEventTrackerRepository $trackerRepository, |
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EventSubscriber $eventSubscriber |
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) |
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{ |
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$this->eventSubscriber = $eventSubscriber; |
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$this->trackerRepository = $trackerRepository; |
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} |
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public function dispatchEvent(EventWithMetaData $eventWithMetaData) |
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{ |
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$listeners = $this->eventSubscriber->getListenersForEvent($eventWithMetaData->getEvent()); |
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foreach ($listeners as $listener) { |
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$metaData = $eventWithMetaData->getMetaData(); |
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if (is_array($listener)) { |
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$saga = $listener[0]; |
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if (!$this->trackerRepository->isEventAlreadyDispatched(get_class($saga), $metaData->getSequence(), $metaData->getIndex())) { |
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try { |
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$this->trackerRepository->beginProcessingEventBySaga(get_class($saga), $metaData->getSequence(), $metaData->getIndex()); |
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call_user_func($listener, $eventWithMetaData->getEvent(), $metaData); |
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$this->trackerRepository->endProcessingEventBySaga(get_class($saga), $metaData->getSequence(), $metaData->getIndex()); |
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} catch (ConcurentModificationException $exception) { |
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continue; |
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} |
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} |
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} |
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} |
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} |
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} |
xprt64 /
cqrs-es
