需求:坐席排队 五秒之内没请求接口认为用户不在排队 从内存移除
redis用作消息队列
1)实现过程: 用户请求接口 查询坐席有没有空闲,坐席没有空闲 继续排队 如果有 查询redis中有没有预先排队的用户 如果有 判断是否是队列中第一请求的用户,如果是分配坐席,如果不是 更新队列中的时间
2)添加一个定时任务类 每三百毫秒刷新一次 查询队列中有没有超时的用户 超时之后将其移除
检测坐席是否为空闲状态
如果有空闲坐席 通过websocket 发送给客户端消息 将坐席状态修改为2,请查看 ocatedseat 方法
比较麻烦的几点:
1)添加用户到队列中返回添加队列的值(这个是lpush返回的)然后吧当前的值 和用户请求过来的唯一id存到redis 中 以备 刷新时间用
long userindex = redisTemplate.opsForList().leftPush("GROUP_SEQUEUE_" + agent_group,JSONObject.toJSONString(map));
redisTemplate.opsForValue().set(uniqueid, String.valueOf(userindex));
2)刷新用户时间:取出队列的size 减去 第一步 存到redis中的值 然后修改队列中用户的时间
long size = redisTemplate.opsForList().size("GROUP_SEQUEUE_" + agent_group);
String index = redisTemplate.opsForValue().get(uniqueid);
long sub = size - Integer.parseInt(index);
redisTemplate.opsForList().set("GROUP_SEQUEUE_" + agent_group,sub, JSONObject.toJSONString(map));
3)坐席状态同步问题
weibsocket 心跳 必须与 状态分开来发送否则会出现, 服务端发送给客户端状态为分配中时 而 客户端在接受到的时候会有时间间隔,在这个间隔的时候 客户端会发送之前的状态给服务端 造成状态不一致问题
public void handleMessage(WebSocketSession session,WebSocketMessage<?>message){ //解析message 修改坐席状态 try{ User user = (User)session.getAttributes().get("user"); String state = message.getPayload().toString(); JSONObject json = JSONObject.parseObject(state); String type = (String) json.get("type"); Object state1 = json.get("status"); String name = (String) json.get("name"); if("0".equals(type)){ //修改状态 if(Integer.parseInt(state1.toString())==0){ redisTemplate.opsForSet().remove("OCATED", user.getUserid().toString()); } redisTemplate.opsForList().remove("GROUP_"+user.getGroupid(), 0, JSONObject.toJSONString(user)); user.setState(Integer.parseInt(state1.toString())); user.setNext_hop("123.57.144.26:9060/udp"); user.setTo("<sip:"+name+"@123.57.144.26:9060>"); redisTemplate.opsForList().leftPush("GROUP_"+user.getGroupid(), JSONObject.toJSONString(user)); logger.info("收到坐席{}发来得消息!当前状态为:{} ",user.getUserid(),state1,DateUtil.formateDate(new Date(), "yyyy-MM-dd HH:mm:ss")); }else if("1".equals(type)){ //只检测坐席是否掉线 this.hart.put(user, new Date()); // session.sendMessage(new TextMessage(JSONObject.toJSONString(user)+" "+new Date())); }else if("2".equals(type)){ //会话接通 保存到redis中 定时插入数据库 boolean flag = false; Conversation con = new Conversation(); String reportnum = (String) json.get("reportnum"); String carnum = (String) json.get("carnum"); List<String> str = redisTemplate.opsForList().range("conversation", 0, -1); for(String s : str){ JSONObject j = JSONObject.parseObject(s); con = JSONObject.toJavaObject(j,Conversation.class); if(con.getCarnum().equals(carnum) && con.getReportnum().equals(reportnum)){ flag = true; } } if(flag){ //已经保存过一次 Long endtime = (Long) json.get("endtime"); con.setEndtime(DateUtil.timestampToDate(endtime.toString()));; }else{ Long starttime = (Long) json.get("starttime"); con.setUserid(user.getUserid()); con.setCarnum(carnum); con.setStarttime(DateUtil.timestampToDate(starttime.toString())); con.setReportnum(reportnum); } redisTemplate.opsForList().leftPush("conversation", JSONObject.toJSONString(con)); }else{ session.sendMessage(new TextMessage("参数错误!")); } }catch(Exception e){ logger.error(e.getMessage(),e); } }
下面奉上代码
1、controller
package com.cloudunicomm.controller; import java.io.IOException; import java.io.OutputStream; import java.text.ParseException; import java.util.Date; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.socket.WebSocketSession; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.cloudunicomm.interceptor.MySocketHandler; import com.cloudunicomm.utils.DateUtil; import com.cloudunicomm.vo.User; @Controller public class FreeController { private static final Logger logger = LoggerFactory.getLogger(FreeController.class); @Autowired private RedisTemplate<String, String> redisTemplate; @Bean public MySocketHandler mySorketHandle() { return new MySocketHandler(); } @RequestMapping(value = "agent_service", method = RequestMethod.GET) @ResponseBody public void agentservice(HttpServletRequest request, HttpServletResponse response, @RequestParam(name = "customer_id", required = false) String customer_id, @RequestParam(name = "agent_group", required = false) String agent_group, @RequestParam(name = "uniqueid", required = false) String uniqueid) throws IOException, ParseException { //logger.info("组:{}---用户:{}----唯一id:{}过来请求接口!",agent_group,customer_id,uniqueid); StringBuffer sb = new StringBuffer(); OutputStream out = response.getOutputStream(); response.setHeader("Content-Disposition", "attachment; filename=" + DateUtil.getDate() + ".ini"); sb.append("reply_code=200 ").append("reply_reason='OK' "); //查询有没有空闲坐席 List<String> users = redisTemplate.opsForList().range("GROUP_" + agent_group, 0, -1); for (String s : users) { User user = (User) JSONObject.toJavaObject(JSONObject.parseObject(s), User.class); Boolean aa = redisTemplate.opsForSet().isMember("OCATED", user.getUserid().toString()); if (user.getState() == 0 && aa==false) { //查询有没有排队用户 List<String> lists = redisTemplate.opsForList().range("GROUP_SEQUEUE_" + agent_group, 0, -1); if (lists.size() > 0) { String str = lists.get(lists.size() - 1); Set<Entry<String, Object>> obj = JSON.parseObject(str).entrySet(); for (Entry<String, Object> s1 : obj) { if (s1.getKey().split("_")[1].equals(uniqueid)) { redisTemplate.opsForList().remove("GROUP_SEQUEUE_"+agent_group, 0, JSONObject.toJSONString(s1)); this.ocatedseat(agent_group, user, customer_id, uniqueid); sb.append("next_hop="+user.getNext_hop()+" "); sb.append("To="+user.getTo()); out.write(sb.toString().getBytes()); out.flush(); out.close(); return ; //return ResultMessage.getSuccess().setMessage("已分配作息!"); } } }else{ this.ocatedseat(agent_group, user, customer_id, uniqueid); sb.append("next_hop="+user.getNext_hop()+" "); sb.append("To="+user.getTo()); out.write(sb.toString().getBytes()); out.flush(); out.close(); return ; } } } String exit = redisTemplate.opsForValue().get(agent_group+"_"+uniqueid); if(null == exit){ //没有 this.adduserqueue(agent_group, uniqueid); //return ResultMessage.getSuccess().setMessage("请等待!"); sb.append("retry_wait=5s"); out.write(sb.toString().getBytes()); out.flush(); out.close(); return; }else{ //return ResultMessage.getSuccess().setMessage("继续等待"); this.resettime(agent_group, uniqueid); sb.append("retry_wait=5s"); out.write(sb.toString().getBytes()); out.flush(); out.close(); return; } } /** * 重置时间 * @param agent_group * @param uniqueid */ public void resettime(String agent_group,String uniqueid){ Map<String, Date> map = new HashMap<>(); map.put(agent_group + "_" + uniqueid, new Date()); long size = redisTemplate.opsForList().size("GROUP_SEQUEUE_" + agent_group); String index = redisTemplate.opsForValue().get(agent_group+"_"+uniqueid); long sub = size - Integer.parseInt(index); redisTemplate.opsForList().set("GROUP_SEQUEUE_" + agent_group,sub, JSONObject.toJSONString(map)); } /** * 添加用户到队列中 * @param map * @param agent_group * @param uniqueid */ public void adduserqueue(String agent_group,String uniqueid){ logger.info("组{}唯一{} 加入队列",agent_group,uniqueid); Map<String, Date> map = new HashMap<>(); map.put(agent_group + "_" + uniqueid, new Date()); long userindex = redisTemplate.opsForList().leftPush("GROUP_SEQUEUE_" + agent_group,JSONObject.toJSONString(map)); redisTemplate.opsForValue().set(agent_group+"_"+uniqueid, String.valueOf(userindex)); } public void ocatedseat(String agent_group,User user ,String customer_id,String uniqueid) throws ParseException{ redisTemplate.opsForSet().add("OCATED", user.getUserid().toString()); user.setState(2); WebSocketSession session = MySocketHandler.sessionid.get(user.getUserid().toString()); mySorketHandle().pushMsg(session.getId(), "2"); updateIndex(agent_group,uniqueid); //sb.append(user.getNext_hop() + " ").append(user.getTo()); logger.info("坐席{}正在被分配给{} ! {}", user.getUserid(),uniqueid,DateUtil.formateDate(new Date(), "yyyy-MM-dd HH:mm:ss")); } /** * 更新索引值 * @param agent_group * @param uniqueid */ private void updateIndex(String agent_group, String uniqueid) { Set<String> index = redisTemplate.keys(agent_group+"_*"); //比较的value String comvalue = redisTemplate.opsForValue().get(agent_group+"_"+uniqueid); for(String s : index ){ int l = Integer.parseInt(redisTemplate.opsForValue().get(s)); if(l>Integer.parseInt(comvalue)){ int reslu = l-1; redisTemplate.opsForValue().set(s,String.valueOf(reslu)); } } redisTemplate.delete(agent_group+"_"+uniqueid); } }
2、定时任务
package com.cloudunicomm.task; import java.text.ParseException; import java.util.Date; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.scheduling.annotation.Scheduled; import org.springframework.stereotype.Component; import com.alibaba.fastjson.JSON; /** * 检测redis中过期的key * @Title: CheckRedisKeyExpireTask.java * @date: 2018年6月29日 * @author: zhangdong * @version: v1.0 * @Description */ @Component public class CheckRedisKeyExpireTask { private static final Logger logger = LoggerFactory.getLogger(CheckRedisKeyExpireTask.class); @Autowired private RedisTemplate<String, ?> redisTemplate; @Scheduled(cron="0/2 * * * * ? ") //每秒执行一次 //@Scheduled(fixedRate=3000) public void job() throws ParseException { //logger.info("开始检测有没有过期的key "+DateUtil.formateDate(new Date(), "yyyy-MM-dd HH:mm:ss")); Set<String> set = redisTemplate.keys("GROUP_SEQUEUE_*"); for(String s:set){ List<String> sss = (List<String>) redisTemplate.opsForList().range(s, 0, -1); for(String m : sss){ Map<String, Long> maps = (Map<String, Long>)JSON.parse(m); for(Entry<String, Long> entry : maps.entrySet()){ long start = entry.getValue(); long end = new Date().getTime(); if(end-entry.getValue()>500000){ //超时 从redis中移除 String[] keys = entry.getKey().toString().split("_"); redisTemplate.opsForList().remove("GROUP_SEQUEUE_"+keys[0], 0, maps.toString()); redisTemplate.delete(entry.getKey()); logger.info("组{}中的值{}已超过{}秒,将其移除!","GROUP_SEQUEUE_"+keys[0],maps.toString(),50); } } } } } }