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@Configurationpublic 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 */@AllArgsConstructorpublic 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 */@Slf4jpublic 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 */@Componentpublic 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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@Resourceprivate 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.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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原文链接：https://blog.csdn.net/qq_41011894/article/details/123116277
