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<?php |
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declare(strict_types=1); |
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namespace Th3Mouk\ReactiveEventDispatcher; |
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use Psr\Container\ContainerInterface; |
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use Psr\EventDispatcher\ListenerProviderInterface; |
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/** |
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* @psalm-immutable |
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*/ |
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final class ListenerProvider implements ListenerProviderInterface |
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{ |
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private ContainerInterface $serviceLocator; |
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/** @psalm-var array<class-string, list<class-string>> */ |
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private array $sortedCorrelations; |
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/** |
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* @param array<EventCorrelation> $eventCorrelations |
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*/ |
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public function __construct(ContainerInterface $serviceLocator, array $eventCorrelations) |
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{ |
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$this->serviceLocator = $serviceLocator; |
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$this->sortedCorrelations = $this->sortedEventCorrelation($eventCorrelations); |
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} |
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/** |
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* @param array<EventCorrelation> $eventCorrelations |
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* |
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* @psalm-return array<class-string, list<class-string>> |
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*/ |
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private function sortedEventCorrelation(array $eventCorrelations): array |
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{ |
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$sortedWithoutPriorities = array_reduce( |
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$eventCorrelations, |
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/** |
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* @psalm-param array<class-string, array<int, list<class-string>>> $carry |
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* @psalm-return array<class-string, array<int, list<class-string>>> |
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*/ |
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static function (array $carry, EventCorrelation $eventCorrelation): array { |
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$carry[$eventCorrelation->eventFqcn][$eventCorrelation->priority->value][] = $eventCorrelation->listenerFqcn; |
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return $carry; |
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}, |
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[] |
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); |
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/** @psalm-var array<class-string, list<class-string>> $fullySorted */ |
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$fullySorted = array_map( |
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/** |
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* @psalm-param array<int, list<class-string>> $eventListenersWithPriorities |
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* @psalm-return list<class-string> |
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*/ |
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static function (array $eventListenersWithPriorities) { |
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krsort($eventListenersWithPriorities); |
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return array_reduce( |
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$eventListenersWithPriorities, |
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/** |
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* @psalm-param list<class-string> $carry |
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* @psalm-param list<class-string> $listenersSortedByPriorities |
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* @psalm-return list<class-string> |
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*/ |
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static function (array $carry, array $listenersSortedByPriorities): array { |
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return array_merge($carry, $listenersSortedByPriorities); |
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}, |
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[] |
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); |
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}, |
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$sortedWithoutPriorities |
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); |
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return $fullySorted; |
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} |
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/** |
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* @return iterable<callable> |
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* |
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* @inheritDoc |
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*/ |
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public function getListenersForEvent(object $event): iterable |
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{ |
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foreach ($this->orderedListenerFqcnIterableForEvent($event) as $listenerFqcn) { |
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if (!$this->serviceLocator->has($listenerFqcn)) { |
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continue; |
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} |
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$listener = $this->serviceLocator->get($listenerFqcn); |
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if (!$listener instanceof Listener) { |
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continue; |
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} |
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yield [$listener, 'process']; |
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} |
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} |
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/** |
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* @psalm-return array<class-string> |
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*/ |
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private function orderedListenerFqcnIterableForEvent(object $event): array |
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{ |
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return $this->sortedCorrelations[get_class($event)] ?? []; |
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} |
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} |
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Th3Mouk /
reactive-event-dispatcher
