func (s *Scheduler) feedNextEvent() {
for {
nextTime, err := s.GetNextTime()
if err != nil {
msg.Logln(" feeder) Didn't find an event. Sleeping.")
time.Sleep(time.Second)
continue
}
msg.Logf(" feeder) Next event on %v\n", nextTime.Format(s.Stamp))
timer := time.AfterFunc(nextTime.Sub(time.Now()), func() {
e, err := s.Pop()
if err == nil {
s.nextEvent <- e
s.stopWaiting <- true
}
})
<-s.stopWaiting
if timer.Stop() {
msg.Logln(" feeder) Interrupted while waiting for current event.")
} else {
msg.Logln(" feeder) Current event completed.")
}
}
}
func (s *Scheduler) ManageEventQueue() {
go s.feedNextEvent()
var err error
// main loop
for {
// wait for the next event
msg.Logln("\nmanager) Waiting for an event...")
event := <-s.nextEvent
msg.Logln("manager) Got one an event.")
// Run the scheduled event
if event.Action != nil {
err = event.Action()
if err != nil {
fmt.Println(err)
break
}
} else {
msg.Logln("Event had no action")
}
// Update the next time for this event
err = event.UpdateNextTime()
if err != nil {
fmt.Println(err)
break
}
// Put this event back on the queue
_, err = s.InsertInOrder(event)
if err != nil {
fmt.Println(err)
break
}
}
}
