scala - 如何使用发布者（在响应式 kafka 中）生成消息？

Question

我必须使用来自 reactive-kafka 模块的代码：https ://github.com/akka/reactive-kafka/blob/master/README.md

我的代码以：

val kafka = new ReactiveKafka()

val kafkaIdpsMsgs: Publisher[StringKafkaMessage] = kafka.consume(
      ConsumerProperties(
        brokerList = kafkaHosts,
        zooKeeperHost = zkHosts,
        topic = "test",
        groupId = "idps-translator",
        decoder = new StringDecoder()
      ).readFromEndOfStream())

    val kafkaSamples: Subscriber[String] = kafka.publish(ProducerProperties(
      brokerList = kafkaHosts,
      topic = "test",
      encoder = new StringEncoder()
    ))

我想产生一条消息（由发布者）。我必须编写什么代码才能实现它？

Answer 1

val done = Source(1 to 100)
  .map(_.toString)
  .map { elem =>
    new ProducerRecord[Array[Byte], String]("topic1", elem)
  }
  .runWith(Producer.plainSink(producerSettings))

您可以浏览此文档：http ://doc.akka.io/docs/akka-stream-kafka/current/producer.html