play framework 2.1 - scheduling async tasks

Question

In play\'s 2.0.x doc you can see how to schedule asynchronous tasks:

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

Akka.system.scheduler         


        

Answer 1

For example run a task every Saturday at 15 AM in java:

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()
);