Lesson 8: SchedulerListeners

SchedulerListeners are much like ITriggerListeners and IJobListeners, except they receive notification of events within the scheduler itself - not necessarily events related to a specific trigger or job.

Scheduler-related events include: the addition of a job/trigger, the removal of a job/trigger, a serious error within the scheduler, notification of the scheduler being shutdown, and others.

The ISchedulerListener Interface

public interface ISchedulerListener
{
    void JobScheduled(Trigger trigger);

    void JobUnscheduled(string triggerName, string triggerGroup);

    void TriggerFinalized(Trigger trigger);

    void TriggersPaused(string triggerName, string triggerGroup);

    void TriggersResumed(string triggerName, string triggerGroup);

    void JobsPaused(string jobName, string jobGroup);

    void JobsResumed(string jobName, string jobGroup);

    void SchedulerError(string msg, SchedulerException cause);

    void SchedulerShutdown();
} 

ISchedulerListener instances are created and registered in much the same way as the other listener types, except there is no distinction between global and non-global listeners. Scheduler listeners can be virtually any object that implements the ISchedulerListener interface.

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