Example usage for org.springframework.scheduling.annotation SchedulingConfigurer configureTasks

Introduction

In this page you can find the example usage for org.springframework.scheduling.annotation SchedulingConfigurer configureTasks.

Prototype

void configureTasks(ScheduledTaskRegistrar taskRegistrar);

Source Link

Document

Callback allowing a org.springframework.scheduling.TaskScheduler TaskScheduler and specific org.springframework.scheduling.config.Task Task instances to be registered against the given the ScheduledTaskRegistrar .

Usage

From source file:org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.java

private void finishRegistration() {
    if (this.scheduler != null) {
        this.registrar.setScheduler(this.scheduler);
    }/*ww  w  .  j  a v a 2 s  . c o  m*/

    if (this.beanFactory instanceof ListableBeanFactory) {
        Map<String, SchedulingConfigurer> beans = ((ListableBeanFactory) this.beanFactory)
                .getBeansOfType(SchedulingConfigurer.class);
        List<SchedulingConfigurer> configurers = new ArrayList<>(beans.values());
        AnnotationAwareOrderComparator.sort(configurers);
        for (SchedulingConfigurer configurer : configurers) {
            configurer.configureTasks(this.registrar);
        }
    }

    if (this.registrar.hasTasks() && this.registrar.getScheduler() == null) {
        Assert.state(this.beanFactory != null, "BeanFactory must be set to find scheduler by type");
        try {
            // Search for TaskScheduler bean...
            this.registrar.setTaskScheduler(resolveSchedulerBean(beanFactory, TaskScheduler.class, false));
        } catch (NoUniqueBeanDefinitionException ex) {
            logger.debug("Could not find unique TaskScheduler bean", ex);
            try {
                this.registrar.setTaskScheduler(resolveSchedulerBean(beanFactory, TaskScheduler.class, true));
            } catch (NoSuchBeanDefinitionException ex2) {
                if (logger.isInfoEnabled()) {
                    logger.info("More than one TaskScheduler bean exists within the context, and "
                            + "none is named 'taskScheduler'. Mark one of them as primary or name it 'taskScheduler' "
                            + "(possibly as an alias); or implement the SchedulingConfigurer interface and call "
                            + "ScheduledTaskRegistrar#setScheduler explicitly within the configureTasks() callback: "
                            + ex.getBeanNamesFound());
                }
            }
        } catch (NoSuchBeanDefinitionException ex) {
            logger.debug("Could not find default TaskScheduler bean", ex);
            // Search for ScheduledExecutorService bean next...
            try {
                this.registrar
                        .setScheduler(resolveSchedulerBean(beanFactory, ScheduledExecutorService.class, false));
            } catch (NoUniqueBeanDefinitionException ex2) {
                logger.debug("Could not find unique ScheduledExecutorService bean", ex2);
                try {
                    this.registrar.setScheduler(
                            resolveSchedulerBean(beanFactory, ScheduledExecutorService.class, true));
                } catch (NoSuchBeanDefinitionException ex3) {
                    if (logger.isInfoEnabled()) {
                        logger.info(
                                "More than one ScheduledExecutorService bean exists within the context, and "
                                        + "none is named 'taskScheduler'. Mark one of them as primary or name it 'taskScheduler' "
                                        + "(possibly as an alias); or implement the SchedulingConfigurer interface and call "
                                        + "ScheduledTaskRegistrar#setScheduler explicitly within the configureTasks() callback: "
                                        + ex2.getBeanNamesFound());
                    }
                }
            } catch (NoSuchBeanDefinitionException ex2) {
                logger.debug("Could not find default ScheduledExecutorService bean", ex2);
                // Giving up -> falling back to default scheduler within the registrar...
                logger.info("No TaskScheduler/ScheduledExecutorService bean found for scheduled processing");
            }
        }
    }

    this.registrar.afterPropertiesSet();
}

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