XXL-Job动态添加任务

我会带着你远行 2022-10-08 13:27 473阅读 0赞

# 前言 #

最近项目中涉及到了定时任务相关需求，最终选择了分布式任务调度框架xxl-job，由于我们在使用xxl-job。这里对xxl-job 一些使用做一下简单介绍。

# 手动定时任务 #

xxl-job 主要分为一个展示web的独立服务，另外一个是我们项目引入xxl-job依赖，对定时任务做监听。这里不对xxl-job 部署独立服务做介绍，主要介绍如何引入xxl-job依赖进行创建定时任务。

一、配置yml

# 定时任务中心配置信息
    job:
      server:
        enabled: true
        # 校验令牌，和服务器保持一致
        accessToken: accessToken
        userName: admin
        password: xxx
        jobGroup: 1
        admin:
          # 定时任务中心地址，通过环境变量取值，（预发布环境需填写预发布的域名，不然会调到开发环境的服务）
          addresses: https://job-centerxx.com
        executor:
          # 执行器名称
          appname: middle-executor
          # 执行器的注册地址
          address:

二、xxl-job 依赖

<dependency>
                <groupId>com.xuxueli</groupId>
                <artifactId>xxl-job-core</artifactId>
                <version>2.3.0</version>
            </dependency>

三、xxl-job 启动

@Slf4j
    @Configuration
    @Getter
    public class JobServerConfig { 
    
        @Value("${job.server.admin.addresses}")
        private String adminAddresses;
    
        @Value("${job.server.accessToken}")
        private String accessToken;
    
        @Value("${job.server.executor.appname}")
        private String appname;
    
        @Value("${job.server.executor.address}")
        private String address;
    
        @Value("${job.server.userName}")
        private String userName;
    
        @Value("${job.server.password}")
        private String password;
    
        @Value("${job.server.jobGroup}")
        private String jobGroup;
    
        @Bean
        public XxlJobSpringExecutor xxlJobExecutor() { 
            log.info(">>>>>>>>>>> job-server config init.");
            XxlJobSpringExecutor xxlJobSpringExecutor = new XxlJobSpringExecutor();
            xxlJobSpringExecutor.setAdminAddresses(adminAddresses);
            xxlJobSpringExecutor.setAppname(appname);
            xxlJobSpringExecutor.setAddress(address);
            xxlJobSpringExecutor.setAccessToken(accessToken);
    
            return xxlJobSpringExecutor;
        }
    }

四、xxl-job 定时任务处理

/** * 工单生成 */
        @XxlJob("patrolGenerateHandler")
        public void maintenanceBeginNoticeHandler() { 
            long taskId = 0;
            try { 
                String param = XxlJobHelper.getJobParam();
                taskId = Long.parseLong(param);
                System.out.println("工单生成");
            } catch (Exception e) { 
                log.error("patrolGenerateHandler fail taskId is {}", taskId, e);
            }
    
        }

五、web端配置对应的定时任务  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhamluZ19mZWl5dWU_size_16_color_FFFFFF_t_70]

此时一个xxl-job 的定时任务就建立起来。

# 动态添加任务 #

动态添加定时任务主要模拟web页面的具体操作步骤，这里先给出一个思路。**不同web配置端的版本版本可能不一致，如果参数和本实例那么我们将页面上面接口和参数拷贝到代码中，进行对应http操作**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZhamluZ19mZWl5dWU_size_16_color_FFFFFF_t_70 1]  
这里的代码都是对这个页面上模拟，如果按照下面案例有什么不一致，可以在将web页面的参数考入代码中。

这里主要提供三个接口（一个是创建定时任务，一个是启动定时任务，另外一个删除定时任务）这里的代码通过一个数据库来管理启动定时任务情况，这里所有定时任务都是通过patrolGenerateHandler 来处理，如果标识该处理是那个定时任务这里主要通过param来分辨。

@Service
    public class DynamicXxlJobService { 
    
        @Resource
        private JobServerConfig jobServerConfig;
    
        @Resource
        private PatrolJobManageService patrolJobManageService;
    
    
        public boolean createTaskJob(String desc, String corn, Long taskId, LocalDateTime expireLocalDateTime, LocalDateTime startLocalDate ){ 
            Date startDate = Date.from(startLocalDate.atZone(ZoneId.systemDefault()).toInstant());
            Date expireDate = Date.from(expireLocalDateTime.atZone(ZoneId.systemDefault()).toInstant());
            String cookie = getCookie();
            PatrolJobManage curPatrolJobManage = patrolJobManageService.getByTaskId(taskId,corn);
            if(Objects.isNull(curPatrolJobManage)){ 
                Pair<Integer, Integer> pair = generateStatus(desc, corn, taskId, startLocalDate, cookie);
                int status = pair.getLeft();
                int job = pair.getRight();
                Date date = new Date();
                PatrolJobManage patrolJobManage = PatrolJobManage.builder().cron(corn).jobId(job).status(status).type("patrol_task_generate")
                        .taskId(taskId).startTime(startDate).expireTime(expireDate).createTime(date).updateTime(date).build();
                patrolJobManageService.save(patrolJobManage);
            }else{ 
                int status = curPatrolJobManage.getStatus();
                StatusEnum statusEnum = StatusEnum.of(status);
                if(statusEnum==StatusEnum.START_JOB || statusEnum==StatusEnum.EXPIRE_JOB){ 
                    return true;
                }
                if (statusEnum==StatusEnum.INIT) { 
                    Pair<Integer, Integer> pair = generateStatus(desc, corn, taskId, startLocalDate, cookie);
                    curPatrolJobManage.setStatus(pair.getLeft());
                    curPatrolJobManage.setJobId(pair.getRight());
                    curPatrolJobManage.setUpdateTime(new Date());
                    patrolJobManageService.updateById(curPatrolJobManage);
                }
    
                if (statusEnum==StatusEnum.START_JOB && startLocalDate.compareTo(LocalDateTime.now()) <= 0) { 
                    Integer jobId = curPatrolJobManage.getJobId();
                    if (start(cookie, jobId)) { 
                        curPatrolJobManage.setStatus(StatusEnum.START_JOB.getCode());
                        curPatrolJobManage.setUpdateTime(new Date());
                        patrolJobManageService.updateById(curPatrolJobManage);
                    }
                }
            }
    
            return true;
        }
    
        private Pair<Integer, Integer>  generateStatus(String desc, String corn, Long taskId,
                                    LocalDateTime startLocalDate,String cookie){ 
            int job = createJob(cookie, desc, corn, String.valueOf(taskId));
            int status = StatusEnum.INIT.getCode();
            if (job == -1) { 
                status = StatusEnum.INIT.getCode();
            } else { 
                status = StatusEnum.CREATE_JOB.getCode();
                if (startLocalDate.compareTo(LocalDateTime.now()) <= 0) { 
                    if (start(cookie, job)) { 
                        status = StatusEnum.START_JOB.getCode();
                    }
                }
            }
    
            return Pair.of(status, job);
        }
        /** * 创建固定任务 * * @param desc 任务描述 * @param corn cron 表达式 * @param param param * @return jobId */
        private int createJob(String cookie, String desc, String corn, String param) { 
    
            int jobId = -1;
            Map<String, String> paramMap = new HashMap<>(8);
            paramMap.put("jobGroup", jobServerConfig.getJobGroup());
            paramMap.put("jobDesc", desc);
            paramMap.put("author", "system_patrol");
            paramMap.put("scheduleType", "CRON");
            paramMap.put("scheduleConf", corn);
            paramMap.put("cronGen_display", corn);
            paramMap.put("glueType", "BEAN");
            paramMap.put("executorHandler", "patrolGenerateHandler");
            // 此处hander需提前在项目中定义
            paramMap.put("executorParam", param);
            paramMap.put("executorRouteStrategy", "FIRST");
            paramMap.put("misfireStrategy", "DO_NOTHING");
            paramMap.put("executorBlockStrategy", "SERIAL_EXECUTION");
            paramMap.put("executorTimeout", "0");
            paramMap.put("executorFailRetryCount", "0");
            paramMap.put("glueRemark", "GLUE代码初始化");
            if(StringUtils.isNoneBlank(cookie)){ 
                cookie = getCookie();
            }
            HashMap<String, String> headMap = new HashMap<>();
            headMap.put("cookie", cookie);
            String s = OkHttpClientUtil.doPost(jobServerConfig.getAdminAddresses() + "/jobinfo/add", paramMap, headMap);
            JSONObject jsonObject = JSON.parseObject(s);
            int code = jsonObject.getIntValue("code");
            if (code == 200) { 
                jobId = jsonObject.getIntValue("content");
            }
    
            return jobId;
        }
    
    
        /** * 启动固定任务 * @param cookie cookie * @param jobId jobId * @return 启动固定任务 */
        private  boolean start(String cookie,int jobId){ 
            Map<String, String> paramMap = new HashMap<>(4);
            paramMap.put("id", String.valueOf(jobId));
            HashMap<String, String> headMap = new HashMap<>(4);
            if(StringUtils.isEmpty(cookie)){ 
                cookie = getCookie();
            }
            headMap.put("cookie", cookie);
            String s = OkHttpClientUtil.doPost(jobServerConfig.getAdminAddresses() + "/jobinfo/start", paramMap, headMap);
            JSONObject jsonObject = JSON.parseObject(s);
            int code = jsonObject.getIntValue("code");
            if (code == 200) { 
                return true;
            }
            return false;
        }
    
    
    
        /** * 删除固定任务 * @param cookie cookie * @param jobId jobId * @return 启动固定任务 */
        public  boolean remove(String cookie,int jobId){ 
            Map<String, String> paramMap = new HashMap<>(4);
            paramMap.put("id", String.valueOf(jobId));
            HashMap<String, String> headMap = new HashMap<>(4);
            if(StringUtils.isEmpty(cookie)){ 
                cookie = getCookie();
            }
            headMap.put("cookie", cookie);
            String s = OkHttpClientUtil.doPost(jobServerConfig.getAdminAddresses() + "/jobinfo/remove", paramMap, headMap);
            JSONObject jsonObject = JSON.parseObject(s);
            int code = jsonObject.getInteger("code");
            if (code == 200) { 
                return true;
            }
            return false;
        }
    
        /** * 获取cookie * @return 返回cookie值 */
        public String getCookie() { 
            String path = jobServerConfig.getAdminAddresses() + "/login";
            Map<String, Object> hashMap = new HashMap();
            hashMap.put("userName", jobServerConfig.getUserName());
            hashMap.put("password", jobServerConfig.getPassword());
            HttpResponse response = HttpRequest.post(path).form(hashMap).execute();
            List<HttpCookie> cookies = response.getCookies();
            StringBuilder sb = new StringBuilder();
            for (HttpCookie cookie : cookies) { 
                sb.append(cookie.toString());
            }
            return sb.toString();
        }
    
    }

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