call akka scheduler.scheduleOnce in actor did not work - akka

Question

I want to use akka system's scheduler to do some thing interval
system.scheduler.scheduleOnce(interval.milliseconds, dayActor, DaySwitch)
I works fine, dayActor will receive DaySwitch message.
in dayActor
def receive = {
case DaySwitch =>
log.info("begin day switch")
context.system.scheduler.scheduleOnce(1.day, self, DaySwitch)
after one day, the dayActor didn't receive DaySwitch message.
How to fix it. Thanks!

Answer 1

I suppose that you have troubles with starting of scheduler or in place which serve interaction with receive event (please provide the whole code).
case object PullCounter
case class PullResult(counter: Int)
case object PullFailed
class PullActor extends Actor {
val period = 2.seconds
var timerCancellable: Option[Cancellable] = None
def scheduleTimer() = {
timerCancellable = Some(
context.system.scheduler.scheduleOnce(
period, context.self, PullCounter
)
)
}
override def preStart() = scheduleTimer()
// so we don't call preStart and schedule a new message
// see http://doc.akka.io/docs/akka/2.2.4/scala/howto.html
override def postRestart(reason: Throwable) = {}
def receive = LoggingReceive {
case PullCounter =>
val fReq = Database.fakeRequest()
fReq.map(counter => PullResult(counter)) pipeTo self
fReq.onFailure{ case _ => self ! PullFailed }
case PullFailed =>
scheduleTimer()
case r: PullResult =>
if(r.counter >= 5) {
context.system.shutdown()
} else {
scheduleTimer()
}
}
}
I suppose, that example like above can help you (at least, it helped me with the similar situation). I took it from this