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Merge pull request #136 from pawelkaczor/akka-timers-without-trigger
Add calev-akka (Akka Typed Support) - without using Trigger directly
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38 changes: 38 additions & 0 deletions
38
modules/akka/src/main/scala/com/github/eikek/calev/akka/CalevActorScheduling.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| package com.github.eikek.calev.akka | ||
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| import java.time.{Clock, ZonedDateTime} | ||
| import java.util.concurrent.TimeUnit | ||
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| import scala.concurrent.duration.{Duration, FiniteDuration} | ||
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| import akka.actor.typed.ActorRef | ||
| import akka.actor.typed.scaladsl.ActorContext | ||
| import com.github.eikek.calev.CalEvent | ||
| import com.typesafe.config.Config | ||
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| object CalevActorScheduling { | ||
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| implicit class CalevActorScheduling(ctx: ActorContext[_]) { | ||
| def scheduleUpcoming[T]( | ||
| calEvent: CalEvent, | ||
| target: ActorRef[T], | ||
| triggerFactory: ZonedDateTime => T, | ||
| clock: Clock = Clock.systemDefaultZone() | ||
| ): Unit = new UpcomingEventProvider(clock)(calEvent).foreach { | ||
| case (instant, delay) => | ||
| ctx.scheduleOnce(delay, target, triggerFactory(instant)) | ||
| } | ||
| } | ||
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| implicit final private[akka] class ConfigOps(val config: Config) extends AnyVal { | ||
| def getDurationMillis(path: String): FiniteDuration = | ||
| getDuration(path, TimeUnit.MILLISECONDS) | ||
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| def getDurationNanos(path: String): FiniteDuration = | ||
| getDuration(path, TimeUnit.NANOSECONDS) | ||
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| private def getDuration(path: String, unit: TimeUnit): FiniteDuration = | ||
| Duration(config.getDuration(path, unit), unit) | ||
| } | ||
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| } |
42 changes: 42 additions & 0 deletions
42
modules/akka/src/main/scala/com/github/eikek/calev/akka/CalevInterceptor.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package com.github.eikek.calev.akka | ||
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| import java.time.{Clock, ZonedDateTime} | ||
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| import scala.reflect.ClassTag | ||
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| import akka.actor.typed.scaladsl.Behaviors | ||
| import akka.actor.typed.{Behavior, BehaviorInterceptor, TypedActorContext} | ||
| import com.github.eikek.calev.CalEvent | ||
| import com.github.eikek.calev.akka.CalevActorScheduling.ConfigOps | ||
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| private[akka] class CalevInterceptor[B, T <: B: ClassTag]( | ||
| clock: Clock, | ||
| calEvent: CalEvent, | ||
| triggerFactory: ZonedDateTime => T | ||
| ) extends BehaviorInterceptor[T, B] { | ||
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| override def aroundStart( | ||
| ctx: TypedActorContext[T], | ||
| target: BehaviorInterceptor.PreStartTarget[B] | ||
| ): Behavior[B] = | ||
| scheduleUpcoming(target.start(ctx)) | ||
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| override def aroundReceive( | ||
| ctx: TypedActorContext[T], | ||
| msg: T, | ||
| target: BehaviorInterceptor.ReceiveTarget[B] | ||
| ): Behavior[B] = | ||
| scheduleUpcoming(target(ctx, msg)) | ||
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| private def scheduleUpcoming(target: Behavior[B]): Behavior[B] = Behaviors.setup { | ||
| ctx => | ||
| val config = ctx.system.settings.config | ||
| val minInterval = config.getDurationMillis("akka.scheduler.tick-duration") * 4 | ||
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| CalevTimerScheduler.withCalevTimers(Some(minInterval), clock) { scheduler => | ||
| scheduler.scheduleUpcoming(calEvent, triggerFactory) | ||
| target | ||
| } | ||
| } | ||
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| } |
19 changes: 19 additions & 0 deletions
19
modules/akka/src/main/scala/com/github/eikek/calev/akka/CalevScheduler.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| package com.github.eikek.calev.akka | ||
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| import java.time.Clock | ||
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| import scala.concurrent.ExecutionContext | ||
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| import akka.actor.typed.Scheduler | ||
| import com.github.eikek.calev.CalEvent | ||
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| class CalevScheduler(scheduler: Scheduler, clock: Clock = Clock.systemDefaultZone()) { | ||
| private val upcomingEventProvider = new UpcomingEventProvider(clock) | ||
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| def scheduleUpcoming(calEvent: CalEvent, runnable: Runnable)(implicit | ||
| executor: ExecutionContext | ||
| ): Unit = | ||
| upcomingEventProvider(calEvent).foreach { case (_, delay) => | ||
| scheduler.scheduleOnce(delay, runnable) | ||
| } | ||
| } |
52 changes: 52 additions & 0 deletions
52
modules/akka/src/main/scala/com/github/eikek/calev/akka/CalevTimerScheduler.scala
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| package com.github.eikek.calev.akka | ||
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| import java.time.{Clock, ZonedDateTime} | ||
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| import scala.concurrent.duration._ | ||
| import scala.reflect.ClassTag | ||
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| import akka.actor.typed.Behavior | ||
| import akka.actor.typed.scaladsl.{Behaviors, TimerScheduler} | ||
| import com.github.eikek.calev.CalEvent | ||
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| object CalevTimerScheduler { | ||
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| def withCalevTimers[T]( | ||
| minInterval: Option[FiniteDuration] = None, | ||
| clock: Clock = Clock.systemDefaultZone() | ||
| )(factory: CalevTimerScheduler[T] => Behavior[T]): Behavior[T] = | ||
| Behaviors.withTimers { scheduler => | ||
| factory(new CalevTimerSchedulerImpl[T](scheduler, clock, minInterval)) | ||
| } | ||
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| def withCalendarEvent[B, T <: B: ClassTag]( | ||
| calEvent: CalEvent, | ||
| triggerFactory: ZonedDateTime => T, | ||
| clock: Clock = Clock.systemDefaultZone() | ||
| )(inner: Behavior[B]): Behavior[T] = | ||
| Behaviors.intercept(() => | ||
| new CalevInterceptor[B, T](clock, calEvent, triggerFactory) | ||
| )(inner) | ||
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| } | ||
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| trait CalevTimerScheduler[T] { | ||
| def scheduleUpcoming(calEvent: CalEvent, triggerFactory: ZonedDateTime => T): Unit | ||
| } | ||
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| private[akka] class CalevTimerSchedulerImpl[T]( | ||
| scheduler: TimerScheduler[T], | ||
| clock: Clock, | ||
| minInterval: Option[FiniteDuration] | ||
| ) extends CalevTimerScheduler[T] { | ||
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| private val upcomingEventProvider = | ||
| new UpcomingEventProvider(clock, minInterval) | ||
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| def scheduleUpcoming(calEvent: CalEvent, triggerFactory: ZonedDateTime => T): Unit = | ||
| upcomingEventProvider(calEvent) | ||
| .foreach { case (instant, delay) => | ||
| scheduler.startSingleTimer(triggerFactory.apply(instant), delay) | ||
| } | ||
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| } |
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