org.apache.brooklyn.util.collections

Class TimeWindowedList<T>

java.lang.Object

org.apache.brooklyn.util.collections.TimeWindowedList<T>

public class TimeWindowedList<T>
extends java.lang.Object

Keeps a list of timestamped values that are in the given time-period (millis). It also guarantees to keep the given minimum number of values in the list (even if old), and to keep the given number of out-of-date values. For example, this is useful if we want to determine if a metric has been consistently high.

Constructor Summary

Constructors

Constructor and Description
TimeWindowedList(Duration timePeriod)
TimeWindowedList(java.util.Map<java.lang.String,?> flags)

Method Summary

Modifier and Type	Method and Description
void	add(T val)
void	add(T val, long timestamp)
T	getLatestValue()
java.util.List<TimestampedValue<T>>	getValues()
java.util.List<TimestampedValue<T>>	getValues(long now)
java.util.List<TimestampedValue<T>>	getValuesInWindow(long now, Duration subTimePeriod)
void	pruneValues(long now)
void	setTimePeriod(Duration newTimePeriod)
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

TimeWindowedList

public TimeWindowedList(Duration timePeriod)

TimeWindowedList

public TimeWindowedList(java.util.Map<java.lang.String,?> flags)

Method Detail

setTimePeriod

public void setTimePeriod(Duration newTimePeriod)

getLatestValue

public T getLatestValue()

getValues

public java.util.List<TimestampedValue<T>> getValues()

getValues

public java.util.List<TimestampedValue<T>> getValues(long now)

getValuesInWindow

public java.util.List<TimestampedValue<T>> getValuesInWindow(long now,
                                                             Duration subTimePeriod)

add

public void add(T val)

add

public void add(T val,
                long timestamp)

pruneValues

public void pruneValues(long now)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object