org.apache.flink.streaming.runtime.tasks

Class DefaultTimeServiceProvider

java.lang.Object

org.apache.flink.streaming.runtime.tasks.TimeServiceProvider

org.apache.flink.streaming.runtime.tasks.DefaultTimeServiceProvider

public class DefaultTimeServiceProvider
extends TimeServiceProvider

A TimeServiceProvider which assigns as current processing time the result of calling System.currentTimeMillis() and registers timers using a ScheduledThreadPoolExecutor.

Method Summary

Modifier and Type	Method and Description
static DefaultTimeServiceProvider	create(ScheduledExecutorService executor)
long	getCurrentProcessingTime() Returns the current processing time.
ScheduledFuture<?>	registerTimer(long timestamp, Runnable target) Registers a task to be executed when (processing) time is timestamp.
void	shutdownService() Shuts down and clean up the timer service provider.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static DefaultTimeServiceProvider create(ScheduledExecutorService executor)

getCurrentProcessingTime

public long getCurrentProcessingTime()

Description copied from class: TimeServiceProvider

Returns the current processing time.

Specified by:

getCurrentProcessingTime in class TimeServiceProvider

registerTimer

public ScheduledFuture<?> registerTimer(long timestamp,
                                        Runnable target)

Description copied from class: TimeServiceProvider

Registers a task to be executed when (processing) time is timestamp.

Specified by:

registerTimer in class TimeServiceProvider

Parameters:

timestamp - when the task is to be executed (in processing time)

target - the task to be executed

Returns:

the result to be returned.

shutdownService

public void shutdownService()
                     throws Exception

Description copied from class: TimeServiceProvider

Shuts down and clean up the timer service provider.

Specified by:

shutdownService in class TimeServiceProvider

Throws:

Exception