Examples of org.quartz.Scheduler

org.quartz.Scheduler

This is the main interface of a Quartz Scheduler.

A Scheduler maintains a registry of {@link org.quartz.JobDetail} s and {@link Trigger}s. Once registered, the Scheduler is responsible for executing Job s when their associated Trigger s fire (when their scheduled time arrives).

Scheduler instances are produced by a {@link SchedulerFactory}. A scheduler that has already been created/initialized can be found and used through the same factory that produced it. After a Scheduler has been created, it is in "stand-by" mode, and must have its start() method called before it will fire any Jobs.

Job s are to be created by the 'client program', by defining a class that implements the {@link org.quartz.Job} interface. {@link JobDetail} objects are then created (also by the client) to define a individual instances of the Job. JobDetail instances can then be registered with the Scheduler via the scheduleJob(JobDetail, Trigger) or addJob(JobDetail, boolean) method.

Trigger s can then be defined to fire individual Job instances based on given schedules. SimpleTrigger s are most useful for one-time firings, or firing at an exact moment in time, with N repeats with a given delay between them. CronTrigger s allow scheduling based on time of day, day of week, day of month, and month of year.

Job s and Trigger s have a name and group associated with them, which should uniquely identify them within a single {@link Scheduler}. The 'group' feature may be useful for creating logical groupings or categorizations of Jobs s and Triggerss. If you don't have need for assigning a group to a given Jobs of Triggers, then you can use the DEFAULT_GROUP constant defined on this interface.

Stored Job s can also be 'manually' triggered through the use of the triggerJob(String jobName, String jobGroup) function.

Client programs may also be interested in the 'listener' interfaces that are available from Quartz. The {@link JobListener} interface provides notifications of Job executions. The {@link TriggerListener} interface provides notifications of Trigger firings. The {@link SchedulerListener} interface provides notifications of Scheduler events and errors.

The setup/configuration of a Scheduler instance is very customizable. Please consult the documentation distributed with Quartz.
@see Job @see JobDetail @see Trigger @see JobListener @see TriggerListener @see SchedulerListener @author James House @author Sharada Jambula

        if (jobPaused.get()) {
            return;
        }
        jobPaused.set(true);


        Scheduler scheduler = getComponent().getScheduler();
        if (scheduler != null && !scheduler.isShutdown()) {
            LOG.info("Pausing trigger {}", triggerKey);
            scheduler.pauseTrigger(triggerKey);
        }
    }

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        if (!jobPaused.get()) {
            return;
        }
        jobPaused.set(false);


        Scheduler scheduler = getComponent().getScheduler();
        if (scheduler != null) {
            LOG.info("Resuming trigger {}", triggerKey);
            scheduler.resumeTrigger(triggerKey);
        }
    }

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        }
        return instName;
    }


    protected Scheduler createScheduler() throws SchedulerException {
        Scheduler scheduler = getFactory().getScheduler();


        if (LOG.isDebugEnabled()) {
            LOG.debug("Using SchedulerFactory {} to get/create Scheduler {}({})",
                    new Object[]{getFactory(), scheduler, ObjectHelper.getIdentityHashCode(scheduler)});
        }


        // register current camel context to scheduler so we can look it up when jobs is being triggered
        // must use management name as it should be unique in the same JVM
        String uid = QuartzHelper.getQuartzContextName(getCamelContext());
        scheduler.getContext().put(QuartzConstants.QUARTZ_CAMEL_CONTEXT + "-" + uid, getCamelContext());


        // store Camel job counter
        AtomicInteger number = (AtomicInteger) scheduler.getContext().get("CamelJobs");
        if (number == null) {
            number = new AtomicInteger(0);
            scheduler.getContext().put("CamelJobs", number);
        }


        return scheduler;
    }

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    protected void doStop() throws Exception {
        removeJobInScheduler();
    }


    private void removeJobInScheduler() throws Exception {
        Scheduler scheduler = getComponent().getScheduler();
        if (scheduler == null) {
            return;
        }


        if (deleteJob) {
            boolean isClustered = scheduler.getMetaData().isJobStoreClustered();
            if (!scheduler.isShutdown() && !isClustered) {
                LOG.info("Deleting job {}", triggerKey);
                scheduler.unscheduleJob(triggerKey);


                jobAdded.set(false);
            }
        } else if (pauseJob) {
            boolean isClustered = scheduler.getMetaData().isJobStoreClustered();
            if (!scheduler.isShutdown() && !isClustered) {
                LOG.info("Pausing job {}", triggerKey);
                scheduler.pauseTrigger(triggerKey);


                jobAdded.set(false);
            }
        }


        // Decrement camel job count for this endpoint
        AtomicInteger number = (AtomicInteger) scheduler.getContext().get(QuartzConstants.QUARTZ_CAMEL_JOBS_COUNT);
        if (number != null) {
            number.decrementAndGet();
        }
    }

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        }
    }


    private void addJobInScheduler() throws Exception {
        // Add or use existing trigger to/from scheduler
        Scheduler scheduler = getComponent().getScheduler();
        JobDetail jobDetail;
        Trigger trigger = scheduler.getTrigger(triggerKey);
        if (trigger == null) {
            jobDetail = createJobDetail();
            trigger = createTrigger(jobDetail);


            updateJobDataMap(jobDetail);


            // Schedule it now. Remember that scheduler might not be started it, but we can schedule now.
            Date nextFireDate = scheduler.scheduleJob(jobDetail, trigger);
            if (LOG.isInfoEnabled()) {
                LOG.info("Job {} (triggerType={}, jobClass={}) is scheduled. Next fire date is {}",
                         new Object[] {trigger.getKey(), trigger.getClass().getSimpleName(),
                                       jobDetail.getJobClass().getSimpleName(), nextFireDate});
            }
        } else {
            ensureNoDupTriggerKey();
        }


        // Increase camel job count for this endpoint
        AtomicInteger number = (AtomicInteger) scheduler.getContext().get(QuartzConstants.QUARTZ_CAMEL_JOBS_COUNT);
        if (number != null) {
            number.incrementAndGet();
        }


        jobAdded.set(true);

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        if (jobPaused.get()) {
            return;
        }
        jobPaused.set(true);


        Scheduler scheduler = getComponent().getScheduler();
        if (scheduler != null && !scheduler.isShutdown()) {
            LOG.info("Pausing trigger {}", triggerKey);
            scheduler.pauseTrigger(triggerKey);
        }
    }

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        if (!jobPaused.get()) {
            return;
        }
        jobPaused.set(false);


        Scheduler scheduler = getComponent().getScheduler();
        if (scheduler != null) {
            LOG.info("Resuming trigger {}", triggerKey);
            scheduler.resumeTrigger(triggerKey);
        }
    }

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    protected void doStop() throws Exception {
        removeJobInScheduler();
    }


    private void removeJobInScheduler() throws Exception {
        Scheduler scheduler = getComponent().getScheduler();
        if (scheduler == null) {
            return;
        }


        if (deleteJob) {
            boolean isClustered = scheduler.getMetaData().isJobStoreClustered();
            if (!scheduler.isShutdown() && !isClustered) {
                LOG.info("Deleting job {}", triggerKey);
                scheduler.unscheduleJob(triggerKey);


                jobAdded.set(false);
            }
        } else if (pauseJob) {
            pauseTrigger();
        }


        // Decrement camel job count for this endpoint
        AtomicInteger number = (AtomicInteger) scheduler.getContext().get(QuartzConstants.QUARTZ_CAMEL_JOBS_COUNT);
        if (number != null) {
            number.decrementAndGet();
        }
    }

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        }
    }


    private void addJobInScheduler() throws Exception {
        // Add or use existing trigger to/from scheduler
        Scheduler scheduler = getComponent().getScheduler();
        JobDetail jobDetail;
        Trigger trigger = scheduler.getTrigger(triggerKey);
        if (trigger == null) {
            jobDetail = createJobDetail();
            trigger = createTrigger(jobDetail);


            updateJobDataMap(jobDetail);


            // Schedule it now. Remember that scheduler might not be started it, but we can schedule now.
            Date nextFireDate = scheduler.scheduleJob(jobDetail, trigger);
            if (LOG.isInfoEnabled()) {
                LOG.info("Job {} (triggerType={}, jobClass={}) is scheduled. Next fire date is {}",
                         new Object[] {trigger.getKey(), trigger.getClass().getSimpleName(),
                                       jobDetail.getJobClass().getSimpleName(), nextFireDate});
            }
        } else {
            ensureNoDupTriggerKey();
        }


        // Increase camel job count for this endpoint
        AtomicInteger number = (AtomicInteger) scheduler.getContext().get(QuartzConstants.QUARTZ_CAMEL_JOBS_COUNT);
        if (number != null) {
            number.incrementAndGet();
        }


        jobAdded.set(true);

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    public QuartzComponent getComponent() {
        return (QuartzComponent)super.getComponent();
    }


    public void pauseTrigger() throws Exception {
        Scheduler scheduler = getComponent().getScheduler();
        boolean isClustered = scheduler.getMetaData().isJobStoreClustered();


        if (jobPaused.get() || isClustered) {
            return;
        }
        
        jobPaused.set(true);
        if (!scheduler.isShutdown()) {
            LOG.info("Pausing trigger {}", triggerKey);
            scheduler.pauseTrigger(triggerKey);
        }
    }

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