akka.actor

Class AbstractScheduler

java.lang.Object

akka.actor.AbstractSchedulerBase

akka.actor.AbstractScheduler

All Implemented Interfaces:

Scheduler

public abstract class AbstractScheduler
extends AbstractSchedulerBase

An Akka scheduler service. This one needs one special behavior: if Closeable, it MUST execute all outstanding tasks upon .close() in order to properly shutdown all dispatchers. Furthermore, this timer service MUST throw IllegalStateException if it cannot schedule a task. Once scheduled, the task MUST be executed. If executed upon close(), the task may execute before its timeout. Scheduler implementation are loaded reflectively at ActorSystem start-up with the following constructor arguments: 1) the system’s com.typesafe.config.Config (from system.settings.config) 2) a akka.event.LoggingAdapter 3) a java.util.concurrent.ThreadFactory

Constructor Summary

Constructors

Constructor and Description
AbstractScheduler()

Method Summary

Methods

Modifier and Type	Method and Description
abstract double	maxFrequency() The maximum supported task frequency of this scheduler, i.e.
abstract Cancellable	schedule(scala.concurrent.duration.FiniteDuration initialDelay, scala.concurrent.duration.FiniteDuration interval, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor) Schedules a function to be run repeatedly with an initial delay and a frequency.
abstract Cancellable	scheduleOnce(scala.concurrent.duration.FiniteDuration delay, java.lang.Runnable runnable, scala.concurrent.ExecutionContext executor) Schedules a Runnable to be run once with a delay, i.e.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface akka.actor.Scheduler

schedule, schedule, scheduleOnce, scheduleOnce

Constructor Detail

AbstractScheduler

public AbstractScheduler()

Method Detail

schedule

public abstract Cancellable schedule(scala.concurrent.duration.FiniteDuration initialDelay,
                   scala.concurrent.duration.FiniteDuration interval,
                   java.lang.Runnable runnable,
                   scala.concurrent.ExecutionContext executor)

Schedules a function to be run repeatedly with an initial delay and a frequency. E.g. if you would like the function to be run after 2 seconds and thereafter every 100ms you would set delay = Duration(2, TimeUnit.SECONDS) and interval = Duration(100, TimeUnit.MILLISECONDS)

scheduleOnce

public abstract Cancellable scheduleOnce(scala.concurrent.duration.FiniteDuration delay,
                       java.lang.Runnable runnable,
                       scala.concurrent.ExecutionContext executor)

Schedules a Runnable to be run once with a delay, i.e. a time period that has to pass before the runnable is executed.

maxFrequency

public abstract double maxFrequency()

The maximum supported task frequency of this scheduler, i.e. the inverse of the minimum time interval between executions of a recurring task, in Hz.