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package com.github.ibole.infrastructure.cache.redis.pubsub;

import com.github.ibole.infrastructure.cache.redis.JedisUtil;

import java.util.Set;

import redis.clients.jedis.Jedis;

/*********************************************************************************************.
 * 
 * 
 * Copyright 2016, iBole Inc. All rights reserved.
 * 
 * 
.
 *********************************************************************************************/


public class PPubClient {

  private Jedis jedis;//
  
  public PPubClient(String host,int port, String password){
    jedis = JedisUtil.getInstance().getJedis(host, port, password);
}
  
  /**
   * 发布的每条消息，都需要在“订阅者消息队列”中持久
   * @param message String
   */
  private void put(String message){
      //期望这个集合不要太大
      Set subClients = jedis.smembers(Constants.SUBSCRIBE_CENTER);
      for(String clientKey : subClients){
          jedis.rpush(clientKey, message);
      }
  }
  
  public void pub(String channel,String message){
      //每个消息，都有具有一个全局唯一的id
      //txid为了防止订阅端在数据处理时“乱序”，这就要求订阅者需要解析message
      Long txid = jedis.incr(Constants.MESSAGE_TXID);
      String content = txid + "/" + message;
      //非事务
      this.put(content);
      jedis.publish(channel, content);//为每个消息设定id，最终消息格式1000/messageContent
      
  }
  
  public void close(String channel){
      jedis.publish(channel, "quit");
      jedis.del(channel);//删除
  }
  
  public void test(){
      jedis.set("pub-block", "15");
      String tmp = jedis.get("pub-block");
      System.out.println("TEST:" + tmp);
  }


}