pekko/akka-docs/rst/scala/code/docs/camel/PublishSubscribe.scala

package docs.camel

object PublishSubscribe {
  //#PubSub
  import akka.actor.{ Actor, ActorRef, ActorSystem, Props }
  import akka.camel.{ Producer, CamelMessage, Consumer }

  class Subscriber(name: String, uri: String) extends Actor with Consumer {
    def endpointUri = uri

    def receive = {
      case msg: CamelMessage ⇒ println("%s received: %s" format (name, msg.body))
    }
  }

  class Publisher(name: String, uri: String) extends Actor with Producer {

    def endpointUri = uri

    // one-way communication with JMS
    override def oneway = true
  }

  class PublisherBridge(uri: String, publisher: ActorRef) extends Actor with Consumer {
    def endpointUri = uri

    def receive = {
      case msg: CamelMessage ⇒ {
        publisher ! msg.bodyAs[String]
        sender ! ("message published")
      }
    }
  }

  // Add below to a Boot class
  // Setup publish/subscribe example
  val system = ActorSystem("some-system")
  val jmsUri = "jms:topic:test"
  val jmsSubscriber1 = system.actorOf(Props(classOf[Subscriber], "jms-subscriber-1", jmsUri))
  val jmsSubscriber2 = system.actorOf(Props(classOf[Subscriber], "jms-subscriber-2", jmsUri))
  val jmsPublisher = system.actorOf(Props(classOf[Publisher], "jms-publisher", jmsUri))
  val jmsPublisherBridge = system.actorOf(Props(classOf[PublisherBridge], "jetty:http://0.0.0.0:8877/camel/pub/jms", jmsPublisher))
  //#PubSub
}