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<?php |
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namespace Happyr\Mq2phpBundle\Service; |
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use Happyr\Mq2phpBundle\Event\PrePublishMessage; |
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use SimpleBus\Serialization\Envelope\Serializer\MessageInEnvelopSerializer; |
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use Symfony\Component\EventDispatcher\EventDispatcherInterface; |
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/** |
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* This service adds some extra headers on the message envelope. |
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* |
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* @author Tobias Nyholm <[email protected]> |
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*/ |
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class MessageSerializerDecorator implements MessageInEnvelopSerializer, HeaderAwareInterface |
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{ |
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/** |
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* @var MessageInEnvelopSerializer |
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*/ |
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private $serializer; |
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/** |
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* @var array |
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*/ |
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private $headers; |
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/** |
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* @var string |
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*/ |
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private $secretKey; |
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/** |
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* @var EventDispatcherInterface |
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*/ |
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private $eventDispatcher; |
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/** |
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* @param MessageInEnvelopSerializer $serializer |
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* @param array $headers |
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* @param string $secretKey |
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* @param EventDispatcherInterface $eventDispatcher |
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*/ |
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public function __construct( |
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MessageInEnvelopSerializer $serializer, |
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EventDispatcherInterface $eventDispatcher, |
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array $headers = [], |
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$secretKey = null |
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) { |
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$this->serializer = $serializer; |
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$this->eventDispatcher = $eventDispatcher; |
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$this->headers = $headers; |
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$this->secretKey = empty($secretKey) ? '' : $secretKey; |
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} |
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/** |
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* Serialize a Message by wrapping it in an Envelope and serializing the envelope. This decoration will |
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* take the SimpleBus envelope and add it in a json message. |
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* |
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* {@inheritdoc} |
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*/ |
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public function wrapAndSerialize($originalMessage) |
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{ |
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$serializedMessage = $this->serializer->wrapAndSerialize($originalMessage); |
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$message = []; |
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foreach ($this->headers as $name => $value) { |
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if (empty($value)) { |
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continue; |
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} |
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$message['headers'][] = ['key' => $name, 'value' => $value]; |
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} |
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$message['body'] = $serializedMessage; |
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// Add a hash where the secret key is baked in. |
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$message['headers'][] = ['key' => 'hash', 'value' => sha1($this->secretKey.$serializedMessage)]; |
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$event = new PrePublishMessage($message, is_object($originalMessage) ? get_class($originalMessage) : gettype($originalMessage)); |
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$this->eventDispatcher->dispatch(PrePublishMessage::NAME, $event); |
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return json_encode($event->getMessage()); |
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} |
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/** |
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* Deserialize a Message that was wrapped in an Envelope. |
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* |
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* {@inheritdoc} |
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*/ |
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public function unwrapAndDeserialize($serializedEnvelope) |
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{ |
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return $this->serializer->unwrapAndDeserialize($serializedEnvelope); |
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} |
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/** |
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* @param string $name |
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* @param mixed $value |
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* |
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* @return $this |
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*/ |
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public function setHeader($name, $value) |
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{ |
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$this->headers[$name] = $value; |
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return $this; |
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} |
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/** |
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* @param string $name |
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*/ |
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public function getHeader($name) |
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{ |
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if (isset($this->headers[$name])) { |
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return $this->headers[$name]; |
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} |
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return; |
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} |
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} |
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