com.here.account.util

Class SettableSystemClock

java.lang.Object

com.here.account.util.SettableSystemClock

All Implemented Interfaces:

Clock, SettableClock

public class SettableSystemClock
extends Object
implements SettableClock

A SettableSystemClock starts off using the Clock.SYSTEM, but any time you set a "corrected" value via setCurrentTimeMillis(long), will record a correction and work off that value instead. This Clock assumes that once a currentTimeMilliseconds is passed in as the "correct" value, the Clock.SYSTEM Clock will continue to process at the correct or near-correct pace. If it doesn't, the currentTimeMilliseconds may need to be set again periodically to the correct value.

Field Summary

Fields inherited from interface com.here.account.util.Clock

SYSTEM

Constructor Summary

Constructors

Constructor and Description
SettableSystemClock()

Method Summary

Modifier and Type	Method and Description
long	currentTimeMillis() Returns the milliseconds UTC since the epoch.
void	schedule(ScheduledExecutorService scheduledExecutorService, Runnable runnable, long millisecondsInTheFutureToSchedule) Schedules runnable the specified millisecondsInTheFutureToSchedule using scheduledExecutorService.
void	setCurrentTimeMillis(long correctCurrentTimeMillis) Sets the milliseconds UTC since the epoch to the specified value.

Methods inherited from class java.lang.Object

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

Constructor Detail

SettableSystemClock

public SettableSystemClock()

Method Detail

currentTimeMillis

public long currentTimeMillis()

Returns the milliseconds UTC since the epoch.

Specified by:

currentTimeMillis in interface Clock

Returns:

this clock's currentTimeMillis in UTC since the epoch.

schedule

public void schedule(ScheduledExecutorService scheduledExecutorService,
                     Runnable runnable,
                     long millisecondsInTheFutureToSchedule)

Schedules runnable the specified millisecondsInTheFutureToSchedule using scheduledExecutorService.

Specified by:

schedule in interface Clock

Parameters:

scheduledExecutorService - the ScheduledExecutorService to submit the runnable to

runnable - the runnable to execute on a schedule

millisecondsInTheFutureToSchedule - the schedule of milliseconds in the future, approximating when the runnable should run.

setCurrentTimeMillis

public void setCurrentTimeMillis(long correctCurrentTimeMillis)

Sets the milliseconds UTC since the epoch to the specified value.

Specified by:

setCurrentTimeMillis in interface SettableClock

Parameters:

correctCurrentTimeMillis - this clock's currentTimeMillis in UTC since the epoch.