Spring Boot and RESTful API(10)Schedule and Dynamic Job

Spring Boot and RESTful API(10)Schedule and Dynamic Job

The major class we use is ThreadPoolTaskScheduler and we keep the reference in ScheduledFuture

package
com.sillycat.jobsmonitorapi.service;

import java.util.concurrent.ScheduledFuture;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.concurrent.ThreadPoolTaskScheduler;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.stereotype.Service;

import com.sillycat.jobsmonitorapi.service.jobs.MyRunnable;

@Service
public class JobDynamicCronService {
    @Autowired
    private ThreadPoolTaskScheduler threadPoolTaskScheduler;

    @Autowired
    private MyRunnable myRunnable;
    private ScheduledFuture<?> future;

    @Bean
    public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
        return new ThreadPoolTaskScheduler();
    }

    public void startCron() {
        this.stopCron();
        future = threadPoolTaskScheduler.schedule(myRunnable, new CronTrigger("*/10 * * * * *"));
    }

    public void stopCron() {
        if (future != null) {
            future.cancel(true);
        }
    }

}

Here is the Task Runnable Interface Class, we can call Spring Beans inside here.

package com.sillycat.jobsmonitorapi.service.jobs;

import java.io.Serializable;
import java.util.Date;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Service;
import com.sillycat.jobsmonitorapi.service.JobService;

@Service
public class MyRunnable implements Runnable, ApplicationContextAware, Serializable {

    private static final long serialVersionUID = 394663593893594867L;
    private ApplicationContext   applicationContext;

    public void run() {
        applicationContext.getBean(JobService.class).echo();
        System.out.println("DynamicTask.MyRunnable.run()，" + new Date());
    }

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }
}

How we test that, I just start the Cron when the application start.

package com.sillycat.jobsmonitorapi;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.scheduling.annotation.EnableScheduling;

import com.sillycat.jobsmonitorapi.service.JobDynamicCronService;

@SpringBootApplication
@EnableScheduling
public class JobsMonitorAPIApplication extends SpringBootServletInitializer{

    public static void main(String[] args) throws Exception {
        ConfigurableApplicationContext context = SpringApplication.run(JobsMonitorAPIApplication.class);
        context.getBean(JobDynamicCronService.class).startCron();
    }

}

We can provide RESTful Interface to Start that.

References:
http://dev.dafan.info/detail/364139?p=14-39
http://412887952-qq-com.iteye.com/blog/2367538
http://blog.leanote.com/post/elegant/spring-%E5%AE%9A%E6%97%B6%E4%BB%BB%E5%8A%A1-taskScheduler
http://www.jianshu.com/p/780235132d81

scalable
http://www.jianshu.com/p/780235132d81
http://www.jianshu.com/p/4a7eb40f6852
http://www.jianshu.com/p/c6dbd6f17850