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  • Kafka消息模拟器

    package clickstream
    import java.util.{Properties, Random, UUID}
    import kafka.producer.{KeyedMessage, Producer, ProducerConfig}
    import org.codehaus.jettison.json.JSONObject
    
    /**  * 
    Created by 郭飞 on 2016/5/31.  
    */
    object KafkaMessageGenerator {
      private val random = new Random()
      private var pointer = -1
      private val os_type = Array(
        "Android", "IPhone OS",
        "None", "Windows Phone")
    
      def click() : Double = {
        random.nextInt(10)
      }
    
      def getOsType() : String = {
        pointer = pointer + 1
        if(pointer >= os_type.length) {
          pointer = 0
          os_type(pointer)
        } else {
          os_type(pointer)
        }
      }
    
      def main(args: Array[String]): Unit = {
        val topic = "user_events"
        //本地虚拟机ZK地址
        val brokers = "hadoop1:9092,hadoop2:9092,hadoop3:9092"
        val props = new Properties()
        props.put("metadata.broker.list", brokers)
        props.put("serializer.class", "kafka.serializer.StringEncoder")
    
        val kafkaConfig = new ProducerConfig(props)
        val producer = new Producer[String, String](kafkaConfig)
    
        while(true) {
          // prepare event data
          val event = new JSONObject()
          event
            .put("uid", UUID.randomUUID())//随机生成用户id
            .put("event_time", System.currentTimeMillis.toString) //记录时间发生时间
            .put("os_type", getOsType) //设备类型
            .put("click_count", click) //点击次数
    
          // produce event message
          producer.send(new KeyedMessage[String, String](topic, event.toString))
          println("Message sent: " + event)
    
          Thread.sleep(200)
        }
      }
    }
    
    作者:MichaelFly
    链接:http://www.jianshu.com/p/ccba410462ba
    來源:简书
    著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。
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  • 原文地址:https://www.cnblogs.com/rocky-AGE-24/p/7404754.html
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