SpringBoot動的管理タイミングタスク

SpringBoot動的管理タイミングタスク
まず@EnableSchedulingを使用してタイミングタスクを開始します

package com.fighting;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;

@SpringBootApplication
@EnableScheduling
public class ScheduledApplication {

    public static void main(String[] args) {
        SpringApplication.run(ScheduledApplication.class, args);
    }
}

ログ・レベルの構成

logging.level.com= debug
logging.file=springboot-scheduled.log

 
 
固定サイクルタイミングタスク
 

package com.fighting;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

/**
 * Spring        
 *
 * @author fighting
 * @date 2018-09-11
 */
@Component
public class SpringStaticCronTask {

    public static final Logger logger = LoggerFactory.getLogger(SpringStaticCronTask.class);


    @Scheduled(cron = "0/5 * * * * ?")
    public void staticCornTask() {
        logger.debug("staticCronTask is running...");
    }


}

 
タイミングサイクルの動的変更
SchedulingConfigurerインタフェースを実現し、configureTasksメソッドを書き換える
 

package com.fighting;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.stereotype.Component;

/**
 *       
 *
 * @author fighting
 * @date 2018-09-11
 */
@Component
public class SpringDynamicCronTask implements SchedulingConfigurer {

    private static final Logger logger = LoggerFactory.getLogger(SpringDynamicCronTask.class);

    private static String cron = "0/5 * * * * ?";


    @Override
    public void configureTasks(ScheduledTaskRegistrar scheduledTaskRegistrar) {
        scheduledTaskRegistrar.addTriggerTask(() -> {
            //     
            logger.error("dynamicCronTask is running...");
        }, triggerContext -> {
            //     ，             ,            
            CronTrigger cronTrigger = new CronTrigger(cron);
            return cronTrigger.nextExecutionTime(triggerContext);
        });

    }


    public SpringDynamicCronTask() {
        //        ,            cron
        new Thread(() -> {
            try {
                Thread.sleep(15000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            cron = "0/2 * * * * ?";
        }).start();
    }

}

印刷結果を見ると、サイクルは変わりましたが、プロジェクトは再起動されませんでした.

2018-09-11 13:36:50.009 DEBUG 16708 --- [pool-1-thread-1] com.fighting.SpringStaticCronTask        : staticCronTask is running...
2018-09-11 13:36:50.010 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:36:55.001 DEBUG 16708 --- [pool-1-thread-1] com.fighting.SpringStaticCronTask        : staticCronTask is running...
2018-09-11 13:36:55.002 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:00.009 DEBUG 16708 --- [pool-1-thread-1] com.fighting.SpringStaticCronTask        : staticCronTask is running...
2018-09-11 13:37:00.016 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:05.016 DEBUG 16708 --- [pool-1-thread-1] com.fighting.SpringStaticCronTask        : staticCronTask is running...
2018-09-11 13:37:05.016 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:06.013 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:08.008 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:10.002 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:10.003 DEBUG 16708 --- [pool-1-thread-1] com.fighting.SpringStaticCronTask        : staticCronTask is running...
2018-09-11 13:37:12.002 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:14.006 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:15.015 DEBUG 16708 --- [pool-1-thread-1] com.fighting.SpringStaticCronTask        : staticCronTask is running...
2018-09-11 13:37:16.012 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...
2018-09-11 13:37:18.002 ERROR 16708 --- [pool-1-thread-1] com.fighting.SpringDynamicCronTask       : dynamicCronTask is running...