Spring @Scheduled task in multiple timezones

Question

I have a client that operates across the US (in all time zones). I need to run a task at 2AM in each time zone. This task needs time zone as input to fetch records only related that zone.

@Scheduled annotation has timezone value, that works of one timezone at a time.

I do not want to duplicate the code by having 4 separate tasks for each zone.

can you try using repeatable annotations in java 8, hit this link for docs https://docs.oracle.com/javase/tutorial/java/annotations/repeating.html — Akhil S Kamath, Oct 04 '18 at 06:09

score 3 · Answer 1 · answered Oct 04 '18 at 02:00

3

Use zone property with annotation @Scheduled, (version 4.0 addition) See Example below

@Scheduled(cron = "0 10 19 * * FRI", zone = "CET")

answered Oct 04 '18 at 02:00

heyitsvajid

1,023
1
10
19

Using this, I can run a task at 2AM in CET. But I want to run at 2AM in all timezones. Like 2AM EST, 2AM CST, 2AM MST and 2AM PST. – rrc Oct 04 '18 at 02:04

score 2 · Answer 2 · answered Oct 04 '18 at 09:57

This should do it for you.

@Slf4j
@Configuration
public class TestBean implements SmartInitializingSingleton {

  @Inject
  TaskScheduler scheduler;

  @Bean
  public TaskScheduler taskScheduler() {
    ThreadPoolTaskScheduler te = new ThreadPoolTaskScheduler();
    te.setPoolSize(4);
    return te;
  }

  @Override
  public void afterSingletonsInstantiated() {

    Arrays.stream(new String[] {"PST", "MST", "CST", "EST"})
        .forEach(zone -> {
          scheduler.schedule(() -> {
            log.info("Zone trigged: {}", zone);
          }, new CronTrigger("0 0 2 * * *", TimeZone.getTimeZone(zone)));
        });
  }
}

You may want to separate out the different concerns of creating the scheduler bean and the task execution. Also, take care to choose a suitable scheduler that has the parallelism you need in the event that a job runs over into the trigger time of the next job.

Akhil S Kamath · Answer 3 · 2018-10-04T06:35:34.157

Can you try this approach ? As per java 8 repeatable annotations docs it should work,@Repeatable is already included in @Scheduled, so no need to declare @scheduled again with @Repeatable annotation

org.springframework.scheduling.annotation.Scheduled

@Repeatable(value=Schedules.class) @Target(value={ANNOTATION_TYPE, METHOD}) @Retention(value=RUNTIME) @Documented

   @Scheduled(cron = "0 1 1,13 * * ?", zone = "CST")
    @Scheduled(cron = "0 1 1,15 * * ?", zone = "SGT")
    public void doScheduledWork() {
        //complete scheduled work
    }
.
.
.

related docs/links : java-8 repeatable custom annotations https://www.javatpoint.com/java-8-type-annotations-and-repeating-annotations

score 0 · Answer 4 · answered Oct 05 '21 at 02:42

a stupid but work solution would be put the content of the logic in another function and call the schedule in 2 different function with different schedule setting

@Scheduled(cron = "0 10 19 * * FRI", zone = "CET") 
public void scheduleCetTask() {
    // code to get parameters
    commonTask(parameters);
}

@Scheduled(cron = "0 10 19 * * FRI", zone = "ABC") 
public void scheduleAbcTask() {
    // code to get parameters
    commonTask(parameters);
}

public void commonTask(parameters) {
}

Spring @Scheduled task in multiple timezones

4 Answers4