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SpringBoot 实现动态添加定时任务功能

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

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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;

/**

  * 调度器配置

  *

  * @author Jiahang Li

  * @version 1.0.0

  * @since 2022/2/14 9:51

  */

@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

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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;

/**

  * 任务类型

  *

  * @author Jiahang Li

  * @version 1.0.0

  * @since 2022/2/14 10:16

  */

@AllArgsConstructor

public enum TaskType {

     /**

      * 发布任务

      */

     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

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package com.orion.ops.handler.scheduler.impl;

 

import com.orion.ops.service.api.ApplicationReleaseService;

import com.orion.spring.SpringHolder;

import lombok.extern.slf4j.Slf4j;

/**

  * 发布任务实现

  *

  * @author Jiahang Li

  * @version 1.0.0

  * @since 2022/2/14 10:25

  */

@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

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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;

/**

  * 定时 任务包装器

  *

  * @author Jiahang Li

  * @version 1.0.0

  * @since 2022/2/14 10:34

  */

public class TimedTask {

     /**

      * 任务

      */

     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)

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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;

/**

  * 任务注册器

  *

  * @author Jiahang Li

  * @version 1.0.0

  * @since 2022/2/14 10:46

  */

@Component

public class TaskRegister implements DisposableBean {

     private final Map<String, TimedTask> taskMap = Maps.newCurrentHashMap();

     @Resource

     @Qualifier ( "taskScheduler" )

     private TaskScheduler scheduler;

     /**

      * 提交任务

      *

      * @param type   type

      * @param time   time

      * @param params params

      */

     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

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@Resource

private TaskRegister taskRegister;

 

/**

  * 提交发布

  */

@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测试数据pareTo( 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

到此这篇关于SpringBoot 实现动态添加定时任务功能的文章就介绍到这了,更多相关SpringBoot 定时任务内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持!

原文链接:https://blog.csdn.net/qq_41011894/article/details/123116277

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