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<?php |
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namespace RemotelyLiving\PHPDNS\Observability\Traits; |
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use RemotelyLiving\PHPDNS\Observability\Events\ObservableEventAbstract; |
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use Symfony\Component\EventDispatcher\EventDispatcher; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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trait Dispatcher |
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{ |
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/** |
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* @var \Symfony\Component\EventDispatcher\EventDispatcherInterface|null |
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*/ |
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private $dispatcher = null; |
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public function setDispatcher(EventDispatcherInterface $dispatcher): void |
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{ |
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$this->dispatcher = $dispatcher; |
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} |
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public function addSubscriber(EventSubscriberInterface $subscriber): void |
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{ |
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$this->getDispatcher()->addSubscriber($subscriber); |
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} |
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public function addListener(string $eventName, callable $listener, int $priority = 0): void |
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{ |
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$this->getDispatcher()->addListener($eventName, $listener, $priority); |
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} |
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public function dispatch(ObservableEventAbstract $event): void |
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{ |
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call_user_func_array([$this->getDispatcher(), 'dispatch'], $this->getOrderedDispatcherArguments($event)); |
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} |
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private function getOrderedDispatcherArguments(ObservableEventAbstract $event) : array |
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{ |
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$reflection = new \ReflectionClass($this->getDispatcher()); |
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foreach ($reflection->getMethods(\ReflectionMethod::IS_PUBLIC) as $method) { |
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if ($method->getName() !== 'dispatch') { |
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continue; |
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} |
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// handle the reverse argument BC from symfony dispatcher 3.* to 4.* |
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foreach ($method->getParameters() as $parameter) { |
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return ($parameter->getName() === 'event') |
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? [$event, $event::getName()] |
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: [$event::getName(), $event]; |
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} |
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} |
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throw new \LogicException('Could not determine argument order for dispatcher'); |
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} |
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private function getDispatcher(): EventDispatcherInterface |
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{ |
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if ($this->dispatcher === null) { |
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$this->dispatcher = new EventDispatcher(); |
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} |
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return $this->dispatcher; |
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} |
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} |
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remotelyliving /
php-dns
