游戏框架2.1 - 调度异步任务(play framework 2.1 - scheduling

在剧中的2.0.x的文档，你可以看到如何安排异步任务：

http://www.playframework.org/documentation/2.0.4/ScalaAkka

Akka.system.scheduler.schedule(0 seconds, 30 minutes, testActor, "tick")

你怎么能做到同样的事情的任意不等阶最近releades播放2.1 ???

整个阿卡API似乎有所改变......

我检查：

https://github.com/playframework/Play20/wiki/Highlights https://github.com/playframework/Play20/wiki/Migration也http://doc.akka.io/docs/akka/2.1.0- RC1 /项目/迁移指南-2.0.x版本，2.1.x.html

还问在这里： https://groups.google.com/d/topic/play-framework/7VcwNea6QlM/discussion

Answer 1:

使用示例代码和阿卡API我做快速测试，对我的作品。

2.0.4和2.1RC1之间进行比较的代码我可以看到有是只有两个调度的情况下的变化：

1. 进口替代

    // import akka.util.duration._ import scala.concurrent.duration._ 

2. 增加进口：

    import play.api.libs.concurrent.Execution.Implicits._ 

app/controllers/Application.scala

package controllers

import play.api._
import play.api.mvc._
import play.libs.Akka

import akka.actor._
import scala.concurrent.duration._
import play.api.libs.concurrent.Execution.Implicits._

object Application extends Controller {

  def index = Action {

    // say hello
    Logger.info("hello, index action started")

    val Tick = "tick"
    val Tack = "tack"

    val tickActor = Akka.system.actorOf(Props(new Actor {
      def receive = {
        case Tick => Logger.info("that still ticks!")
        case Tack => Logger.warn("... 7 seconds after start, only once")
      }
    }))

    // Repeat every 5 seconds, start 5 seconds after start
    Akka.system.scheduler.schedule(
      5 seconds,
      5 seconds,
      tickActor,
      Tick
    )

    // do only once, 7 seconds after start
    Akka.system.scheduler.scheduleOnce(7 seconds, tickActor, Tack)

    Ok(views.html.index("Your new application is ready."))
  }

}

编辑

诺塔好处，因为我可以从朱利安在组后看到，这足以导入defaultContext只：

import play.api.libs.concurrent.Execution.Implicits.defaultContext

Answer 2:

biesior的答案是伟大的

不过，你不必去通过一个演员，如果你不想。 下面是使用好老了相同的答案java.lang.Runnable ：

Akka.system.scheduler.schedule(5 minutes, 5 minutes, new Runnable {
  def run() {
    Logger.info("that still ticks!")
  }
})
Akka.system.scheduler.scheduleOnce(7 minutes, new Runnable {
  def run() {
    Logger.warn("... 7 seconds after start, only once")
  }
})

Answer 3:

例如Java中的15 AM运行每星期六任务：

DateTime now = new DateTime();

DateTime plannedStart = new DateTime()
    .withDayOfWeek(DateTimeConstants.SATURDAY)
    .withHourOfDay(15)
    .withMinuteOfHour(0)
    .withSecondOfMinute(0)
    .withMillisOfSecond(0);

DateTime nextRun = (now.isAfter(plannedStart))
    ? plannedStart.plusDays(7)
    : plannedStart;

Long nextRunInSeconds = (long) secondsBetween(now, nextRun).getSeconds();

Akka.system().scheduler().schedule(
    Duration.create(nextRunInSeconds, TimeUnit.SECONDS),
    Duration.create(7, TimeUnit.DAYS) ,
    new Runnable() {
        public void run() {
            Logger.info("-------------------------scheduler start : " + new DateTime());
        }
    },
    Akka.system().dispatcher()
);

文章来源: play framework 2.1 - scheduling async tasks