content: package com.alibaba.fastjson.rocketmq;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Random;
  
  public class BrokerData {
      public static final long MASTER_ID = 0L;
  
      private String cluster;
      private String brokerName;
      private HashMap<Long/* brokerId */, String/* broker address */> brokerAddrs;
  
      private final Random random = new Random();
  
      public String selectBrokerAddr() {
          String addr = this.brokerAddrs.get(MASTER_ID);
  
          if (addr == null) {
              List<String> addrs = new ArrayList<String>(brokerAddrs.values());
              return addrs.get(random.nextInt(addrs.size()));
          }
  
          return addr;
      }
  
      public HashMap<Long, String> getBrokerAddrs() {
          return brokerAddrs;
      }
  
      public void setBrokerAddrs(HashMap<Long, String> brokerAddrs) {
          this.brokerAddrs = brokerAddrs;
      }
  
      public String getCluster() {
          return cluster;
      }
  
      public void setCluster(String cluster) {
          this.cluster = cluster;
      }
  }
  