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<?php |
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declare(strict_types=1); |
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namespace Jellyfish\Event; |
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use ArrayObject; |
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use Jellyfish\Event\Exception\MappingException; |
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use Jellyfish\Queue\MessageFactoryInterface; |
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use Jellyfish\Queue\MessageInterface; |
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use Jellyfish\Serializer\SerializerInterface; |
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use function get_class; |
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class EventMapper implements EventMapperInterface |
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{ |
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/** |
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* @var \Jellyfish\Event\EventFactoryInterface |
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*/ |
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protected $eventFactory; |
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/** |
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* @var \Jellyfish\Queue\MessageFactoryInterface |
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*/ |
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protected $messageFactory; |
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/** |
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* @var \Jellyfish\Serializer\SerializerInterface |
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*/ |
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protected $serializer; |
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/** |
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* @param \Jellyfish\Event\EventFactoryInterface $eventFactory |
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* @param \Jellyfish\Queue\MessageFactoryInterface $messageFactory |
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* @param \Jellyfish\Serializer\SerializerInterface $serializer |
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*/ |
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public function __construct( |
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EventFactoryInterface $eventFactory, |
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MessageFactoryInterface $messageFactory, |
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SerializerInterface $serializer |
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) { |
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$this->messageFactory = $messageFactory; |
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$this->eventFactory = $eventFactory; |
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$this->serializer = $serializer; |
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} |
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/** |
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* @param \Jellyfish\Queue\MessageInterface $message |
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* |
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* @return \Jellyfish\Event\EventInterface |
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* |
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* @throws \Jellyfish\Event\Exception\MappingException |
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*/ |
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public function fromMessage(MessageInterface $message): EventInterface |
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{ |
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$type = $message->getHeader('body_type'); |
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$eventName = $message->getHeader('event_name'); |
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if ($type === null || $eventName === null) { |
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throw new MappingException('Could not map message to event.'); |
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} |
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$payload = $this->serializer->deserialize($message->getBody(), $type, 'json'); |
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$metaProperties = $this->mapHeadersToMetaProperties($message->getHeaders()); |
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return $this->eventFactory->create() |
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->setName($eventName) |
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->setPayload($payload) |
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->setMetaProperties($metaProperties); |
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} |
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/** |
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* @param \Jellyfish\Event\EventInterface $event |
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* @return \Jellyfish\Queue\MessageInterface |
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*/ |
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public function toMessage(EventInterface $event): MessageInterface |
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{ |
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$payload = $event->getPayload(); |
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$metaProperties = $event->getMetaProperties(); |
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$message = $this->messageFactory->create() |
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->setHeaders($metaProperties) |
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->setHeader('event_name', $event->getName()) |
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->setHeader('body_type', get_class($payload)) |
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->setBody($this->serializer->serialize($payload, 'json')); |
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if (!($payload instanceof ArrayObject)) { |
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return $message; |
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} |
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$type = 'stdClass[]'; |
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if ($payload->count() !== 0) { |
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$type = get_class($payload->offsetGet(0)) . '[]'; |
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} |
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$message->setHeader('body_type', $type); |
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return $message; |
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} |
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/** |
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* @param array $headers |
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* |
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* @return array |
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*/ |
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protected function mapHeadersToMetaProperties(array $headers): array |
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{ |
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$metaProperties = $headers; |
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unset($metaProperties['body_type'], $metaProperties['event_name']); |
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return $metaProperties; |
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} |
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} |
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jellyfishphp /
jellyfish
