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November 11, 2015 00:34
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case object Hello | |
case object Howdy | |
case object GetCount | |
case class HelloCount(count: Int) | |
class HelloActor extends Actor { | |
var count = 0 | |
def receive = { | |
case Hello => | |
count += 1 | |
sender() ! Howdy | |
case GetCount => | |
sender() ! HelloCount(count) | |
} | |
val helloActor = system.actorOf(Props[HelloActor]) | |
helloActor ! Hello | |
for { | |
HelloCount(count) <- (helloActor ? GetCount).mapTo[HelloCount] | |
} yield { | |
println(count) | |
} | |
class ImpressionCounter extends Actor { | |
import akka.cluster.ddata.Replicator._ | |
val replicator = DistributedData(context.system).replicator | |
implicit val cluster = Cluster(context.system) | |
val ImpressionsKey = PNCounterMapKey("impressions") | |
def receive = { | |
case AdViewed(adId) ⇒ | |
val update = Update(ImpressionsKey, PNCounterMap(), WriteLocal) { | |
_.increment(adId, 1) | |
} | |
replicator ! update | |
case GetImpressions(adId) ⇒ | |
replicator ! Get(ImpressionsKey, ReadAll(3.seconds), Some(GetImpressionsReq(adId, sender())) | |
case g @ GetSuccess(ImpressionsKey, Some(GetImpressionsReq(adId, replyTo))) ⇒ | |
val data = g.get(ImpressionsKey) | |
replyTo ! AdImpressions(data.entries(adId)) | |
} | |
} | |
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