How to conditionally enable or disable scheduled jobs in Spring?

Question

I am defining scheduled jobs with cron style patterns in Spring, using the @Scheduled annotation.

The cron pattern is stored in a config properties file

Answer 1

You can also create a Bean based on condition and that Bean can have a Scheduled method.

@Component
@Configuration
@EnableScheduling
public class CustomCronComponent {
    @Bean
    @ConditionalOnProperty(value = "my.cron.enabled", matchIfMissing = true, havingValue = "true")
    public MyCronTask runMyCronTask() {
        return new MyCronTask();
    }
}

and

@Component
public class MyCronTask {
    @Scheduled(cron = "${my.cron.expression}")
    public void run() {
        String a = "";
    }
}