akka 流的全功能 Cron 调度

Full featured Cron scheduling of akka streams

在 akka 流中可以执行以下操作:

Source.tick(0.seconds, 15.seconds, "Hello")

并且您的流将每 15 秒接收一次滴答元素 "Hello"。我正在寻找的是做同样的事情的可能性,但在类似 cron 的时间表上,例如"every monday at 5 pm".

我明白了。有一个 akka 插件 akka-quartz-scheduler 允许像这样配置一些 quartz 计划配置:将此部分添加到 akka.conf

akka {
  quartz.schedules {
    SomeSchedule {
      expression = "0 0 1 * * ?"
      timezone = "GMT-7"
      description = "Do something every day at 1 a.m. SF time."
    }
  }
}

然后安排它

    case class Signal(someData: String)

    implicit val system: ActorSystem = ActorSystem("lebulbeaux-system")
    implicit val materializer: ActorMaterializer = ActorMaterializer()
    // needed for the future flatMap/onComplete in the end
    implicit val executionContext: ExecutionContextExecutor = system.dispatcher

    val source: Source[Signal, ActorRef] = Source.actorRef[Signal](100, OverflowStrategy.fail)

    val ref: ActorRef = Flow[Signal].to(Sink.foreach(signal => println(signal.someData))).runWith(source)

    import com.typesafe.akka.extension.quartz.QuartzSchedulerExtension

    QuartzSchedulerExtension(system).schedule("SomeSchedule", ref, Signal("Hello!"))

    // scroll

现在您每天 1 点 a.m 都会收到一条信号消息。顺丰时间.

此外,请查看此 以获得更多使用 Source.actorRef

的选项