标签: distributedpubsub

我有以下Subscriber抽象基类:

abstract class Subscriber(topics: Seq[String]) extends Actor with ActorLogging {
  import DistributedPubSubMediator.{ Subscribe, SubscribeAck }

  val mediator = DistributedPubSub(context.system).mediator

  // subscribe to each topic
  topics.foreach{mediator ! Subscribe(_, self)}

  def receive = {
    case SubscribeAck(Subscribe(name, None, `self`)) ?
      log.info(s"Subscribing to $name")
  }
}

我想测试它是否接收发布到子类订阅的主题的消息.一些简单的伪代码表明如下:

val topic = "foo"

class FooSubscriber extends Subscriber(Seq(topic))

val fooSubActor = system.actorOf(Props[FooSubscriber])    
val mediator = DistributedPubSub(system).mediator
val msg = "This is a string"

// Publish the msg to the "foo" topic.
mediator ! Publish(topic, msg) …