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我尝试了“你好,世界”的例子与MongoDB的支持阿卡的持久性,使用这个开源,https://github.com/scullxbones/akka-persistence-mongo/tree/master/rxmongo/src。以下是我的代码。然而,当我运行应用程序,我问超时:演员问超时在阿卡持久性
akka.pattern.AskTimeoutException:2000毫秒]后://例子/用户/ sampleActor#1876558089]演员[阿卡]请教关于超时。 Sender [null]发送类型为“actors.Command”的消息。
import akka.actor.{ActorSystem, Props}
import akka.pattern.ask
import akka.persistence.{PersistentActor, RecoveryCompleted}
import akka.util.Timeout
import scala.concurrent.Await
import scala.concurrent.duration._
import scala.language.postfixOps
object Main extends App {
implicit val timeout = Timeout(2 seconds)
val system = ActorSystem("example")
var actor = system.actorOf(SampleActor.props(), "sampleActor")
Await.result(actor ? Command("first"), Duration.Inf)
Await.result(actor ? Command("second"), Duration.Inf)
system.stop(actor)
system.terminate()
}
case class Command(value: String)
case class Event(value: String)
case class SampleState(counter: Int, lastValue: Option[String])
class SampleActor extends PersistentActor {
override def persistenceId = "id-1"
var state = SampleState(0, None)
def updateState(event: Event): Unit = {
state = state.copy(counter = state.counter + 1, lastValue = Some(event.value))
}
override val receiveCommand: Receive = {
case Command(value) =>
persist(Event(value))(updateState)
}
override def receiveRecover: Receive = {
case event: Event =>
updateState(event)
case RecoveryCompleted =>
println("Recovery completed")
}
}
object SampleActor {
def props(): Props = Props(new SampleActor())
}
这里是我的application.conf:(!)(?)
contrib {
persistence {
mongodb {
mongo {
mongouri = "mongodb://localhost:27017/akka-persistence"
driver = "akka.contrib.persistence.mongodb.RxMongoPersistenceExtension"
}
rxmongo {
failover {
initialDelay = 750ms
retries = 10
growth = con
factor = 1.5
}
}
}
}
}
如果我使用tell,而不是问,什么也没有发生,数据库没有建立,也没有命令持续存在。
谢谢!