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);
}
}
}
}
}
}