Configuring Quartz Scheduler in Spring Boot

QuartzConfig.java

@Configuration
public class QuartzConfig {

    @Bean
    public JobDetailFactoryBean jobDetail() {
        JobDetailFactoryBean jobDetailFactory = new JobDetailFactoryBean();
        jobDetailFactory.setJobClass(GarbageCollectorJob.class);
        jobDetailFactory.setDescription("Invoke Sample Job service...");
        jobDetailFactory.setDurability(true);
        return jobDetailFactory;
    }

    @Bean
    public SimpleTriggerFactoryBean trigger(JobDetail job) {
        SimpleTriggerFactoryBean trigger = new SimpleTriggerFactoryBean();
        trigger.setJobDetail(job);
        // every one hour
        trigger.setRepeatInterval(60 * 60 * 1000);
        trigger.setRepeatCount(SimpleTrigger.REPEAT_INDEFINITELY);
        return trigger;
    }

    @Bean
    public SchedulerFactoryBean scheduler(Trigger trigger, JobDetail job, JobFactory springBeanJobFactory) {
        SchedulerFactoryBean schedulerFactory = new SchedulerFactoryBean();
        schedulerFactory.setConfigLocation(new ClassPathResource("quartz.properties"));

        schedulerFactory.setJobFactory(springBeanJobFactory);
        schedulerFactory.setJobDetails(job);
        schedulerFactory.setTriggers(trigger);
        return schedulerFactory;
    }

    @Bean
    public SpringBeanJobFactory springBeanJobFactory(ApplicationContext applicationContext) {
        AutoWiringSpringBeanJobFactory jobFactory = new AutoWiringSpringBeanJobFactory();
        jobFactory.setApplicationContext(applicationContext);
        return jobFactory;
    }
}

AutoWiringSpringBeanJobFactory.java

public final class AutoWiringSpringBeanJobFactory
        extends SpringBeanJobFactory
        implements ApplicationContextAware {

    private transient AutowireCapableBeanFactory beanFactory;

    public void setApplicationContext(
            final ApplicationContext context) {
        beanFactory = context.getAutowireCapableBeanFactory();
    }

    @Override
    protected Object createJobInstance(
            final TriggerFiredBundle bundle)
            throws Exception {
        final Object job = super.createJobInstance(bundle);
        beanFactory.autowireBean(job);
        return job;
    }
}

quartz.properties

org.quartz.threadPool.class=org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount=10
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread=true

org.quartz.jobStore.class=org.quartz.simpl.RAMJobStore

References
https://www.baeldung.com/spring-quartz-schedule
http://www.btmatthews.com/blog/2011/inject-application-context+dependencies-in-quartz-job-beans.html
https://www.candidjava.com/spring-boot/quartz-example/

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