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<?php |
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declare(strict_types=1); |
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namespace Dsantang\DomainEventsDoctrine\Outbox; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Doctrine\ORM\Event\OnFlushEventArgs; |
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use Doctrine\ORM\UnitOfWork; |
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use Dsantang\DomainEvents\Counter; |
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use Dsantang\DomainEvents\DeletionAware; |
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use Dsantang\DomainEvents\DomainEvent; |
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use Dsantang\DomainEvents\EventAware; |
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use function array_filter; |
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use function array_merge; |
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use function array_push; |
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use function count; |
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use function ksort; |
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abstract class EventsHandler |
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{ |
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/** @var OutboxMappedSuperclass */ |
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protected $outboxMappedSuperclass; |
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public function __construct(OutboxMappedSuperclass $outboxMappedSuperclass) |
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{ |
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$this->outboxMappedSuperclass = $outboxMappedSuperclass; |
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} |
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/** |
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* @return OutboxEntry[] |
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* |
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* @var DomainEvent[] $domainEvents |
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*/ |
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abstract protected function convert(DomainEvent ...$domainEvents) : array; |
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public function onFlush(OnFlushEventArgs $eventArgs) : void |
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{ |
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$domainEvents = $this->getDomainEvents($eventArgs); |
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$outboxEvents = $this->convert(...$domainEvents); |
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$this->persist($eventArgs->getEntityManager(), ...$outboxEvents); |
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} |
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/** |
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* @return DomainEvent[] |
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*/ |
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protected function getDomainEvents(OnFlushEventArgs $eventArgs) : array |
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{ |
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$unitOfWork = $eventArgs->getEntityManager() |
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->getUnitOfWork(); |
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$events = []; |
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foreach (self::getEventAwareEntities($unitOfWork) as $entity) { |
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$events += $entity->expelRecordedEvents(); |
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} |
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foreach (self::getDeletionAwareEntities($unitOfWork) as $entity) { |
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array_push($events, $entity->expelDeletionEvents()); |
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} |
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ksort($events); |
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Counter::reset(); |
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return $events; |
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} |
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protected function persist(EntityManagerInterface $entityManager, OutboxEntry ...$outboxEntries) : void |
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{ |
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if (count($outboxEntries) <= 0) { |
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return; |
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} |
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$previousEntity = null; |
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foreach ($outboxEntries as $outboxEntry) { |
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$entity = $this->outboxMappedSuperclass->fromOutboxEntry($outboxEntry, $previousEntity); |
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$entityManager->persist($entity); |
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$previousEntity = $entity; |
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} |
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$entityManager->getUnitOfWork()->computeChangeSets(); |
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} |
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/** |
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* @return EventAware[] |
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*/ |
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private static function getEventAwareEntities(UnitOfWork $unitOfWork) : array |
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{ |
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$entities = array_merge( |
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$unitOfWork->getScheduledEntityInsertions(), |
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$unitOfWork->getScheduledEntityUpdates(), |
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$unitOfWork->getScheduledEntityDeletions() |
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); |
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return array_filter($entities, static function ($entity) { |
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return $entity instanceof EventAware; |
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}); |
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} |
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/** |
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* @return DeletionAware[] |
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*/ |
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private static function getDeletionAwareEntities(UnitOfWork $unitOfWork) : array |
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{ |
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return array_filter($unitOfWork->getScheduledEntityDeletions(), static function ($entity) { |
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return $entity instanceof DeletionAware; |
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}); |
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} |
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} |
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dsantang /
domain-events-doctrine
