最近的需求有一个自动发布的功能, 需要做到每次提交都要动态的添加一个定时任务
代码结构
1. 配置类
package com.orion.ops.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
@EnableScheduling
@Configuration
public class SchedulerConfig {
@Bean
public TaskScheduler taskScheduler() {
ThreadPoolTaskScheduler scheduler = new ThreadPoolTaskScheduler();
scheduler.setPoolSize(4);
scheduler.setRemoveOnCancelPolicy(true);
scheduler.setThreadNamePrefix("scheduling-task-");
return scheduler;
}
}2. 定时任务类型枚举
package com.orion.ops.handler.scheduler;
import com.orion.ops.consts.Const;
import com.orion.ops.handler.scheduler.impl.ReleaseTaskImpl;
import com.orion.ops.handler.scheduler.impl.SchedulerTaskImpl;
import lombok.AllArgsConstructor;
import java.util.function.Function;
@AllArgsConstructor
public enum TaskType {
RELEASE(id -> new ReleaseTaskImpl((Long) id)) {
@Override
public String getKey(Object params) {
return Const.RELEASE + "-" + params;
}
},
* 调度任务
SCHEDULER_TASK(id -> new SchedulerTaskImpl((Long) id)) {
return Const.TASK + "-" + params;
;
private final Function<Object, Runnable> factory;
* 创建任务
*
* @param params params
* @return task
public Runnable create(Object params) {
return factory.apply(params);
}
* 获取 key
* @return key
public abstract String getKey(Object params);
}这个枚举的作用是生成定时任务的 runnable 和 定时任务的唯一值, 方便后续维护
3. 实际执行任务实现类
package com.orion.ops.handler.scheduler.impl;
import com.orion.ops.service.api.ApplicationReleaseService;
import com.orion.spring.SpringHolder;
import lombok.extern.slf4j.Slf4j;
@Slf4j
public class ReleaseTaskImpl implements Runnable {
protected static ApplicationReleaseService applicationReleaseService = SpringHolder.getBean(ApplicationReleaseService.class);
private Long releaseId;
public ReleaseTaskImpl(Long releaseId) {
this.releaseId = releaseId;
}
@Override
public void run() {
log.info("定时执行发布任务-触发 releaseId: {}", releaseId);
applicationReleaseService.runnableAppRelease(releaseId, true);
}4. 定时任务包装器
package com.orion.ops.handler.scheduler;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.Trigger;
import java.util.Date;
import java.util.concurrent.ScheduledFuture;
public class TimedTask {
private Runnable runnable;
* 异步执行
private volatile ScheduledFuture<?> future;
public TimedTask(Runnable runnable) {
this.runnable = runnable;
}
* 提交任务 一次性
*
* @param scheduler scheduler
* @param time time
public void submit(TaskScheduler scheduler, Date time) {
this.future = scheduler.schedule(runnable, time);
* 提交任务 cron表达式
* @param trigger trigger
public void submit(TaskScheduler scheduler, Trigger trigger) {
this.future = scheduler.schedule(runnable, trigger);
* 取消定时任务
public void cancel() {
if (future != null) {
future.cancel(true);
}
}这个类的作用是包装实际执行任务, 以及提供调度器的执行方法
5. 任务注册器 (核心)
package com.orion.ops.handler.scheduler;
import com.orion.ops.consts.MessageConst;
import com.orion.utils.Exceptions;
import com.orion.utils.collect.Maps;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.stereotype.Component;
import javax.annotation.Resource;
import java.util.Date;
import java.util.Map;
@Component
public class TaskRegister implements DisposableBean {
private final Map<String, TimedTask> taskMap = Maps.newCurrentHashMap();
@Resource
@Qualifier("taskScheduler")
private TaskScheduler scheduler;
public void submit(TaskType type, Date time, Object params) {
// 获取任务
TimedTask timedTask = this.getTask(type, params);
// 执行任务
timedTask.submit(scheduler, time);
}
* @param cron cron
public void submit(TaskType type, String cron, Object params) {
timedTask.submit(scheduler, new CronTrigger(cron));
* 获取任务
private TimedTask getTask(TaskType type, Object params) {
// 生成任务
Runnable runnable = type.create(params);
String key = type.getKey(params);
// 判断是否存在任务
if (taskMap.containsKey(key)) {
throw Exceptions.init(MessageConst.TASK_PRESENT);
}
TimedTask timedTask = new TimedTask(runnable);
taskMap.put(key, timedTask);
return timedTask;
* 取消任务
public void cancel(TaskType type, Object params) {
TimedTask task = taskMap.get(key);
if (task != null) {
taskMap.remove(key);
task.cancel();
* 是否存在
public boolean has(TaskType type, Object params) {
return taskMap.containsKey(type.getKey(params));
@Override
public void destroy() {
taskMap.values().forEach(TimedTask::cancel);
taskMap.clear();
}这个类提供了执行, 提交任务的api, 实现 DisposableBean 接口, 便于在bean销毁时将任务一起销毁
6. 使用
@Resource
private TaskRegister taskRegister;
@RequestMapping("/submit")
@EventLog(EventType.SUBMIT_RELEASE)
public Long submitAppRelease(@RequestBody ApplicationReleaseRequest request) {
Valid.notBlank(request.getTitle());
Valid.notNull(request.getAppId());
Valid.notNull(request.getProfileId());
Valid.notNull(request.getBuildId());
Valid.notEmpty(request.getMachineIdList());
TimedReleaseType timedReleaseType = Valid.notNull(TimedReleaseType.of(request.getTimedRelease()));
if (TimedReleaseType.TIMED.equals(timedReleaseType)) {
Date timedReleaseTime = Valid.notNull(request.getTimedReleaseTime());
Valid.isTrue(timedReleaseTime.compareTo(new Date()) > 0, MessageConst.TIMED_GREATER_THAN_NOW);
}
// 提交
Long id = applicationReleaseService.submitAppRelease(request);
// 提交任务
taskRegister.submit(TaskType.RELEASE, request.getTimedReleaseTime(), id);
return id;
}最后
这是一个简单的动态添加定时任务的工具, 有很多的改造空间, 比如想持久化可以插入到库中, 定义一个 CommandLineRunner 在启动时将定时任务全部加载, 还可以给任务加钩子自动提交,自动删除等, 代码直接cv一定会报错, 就是一些工具, 常量类会报错, 改改就好了, 本人已亲测可用, 有什么问题可以在评论区沟通
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