io.dropwizard.metrics

Class UniformSnapshot

java.lang.Object

io.dropwizard.metrics.Snapshot

io.dropwizard.metrics.UniformSnapshot

public class UniformSnapshot
extends Snapshot

A statistical snapshot of a UniformSnapshot.

Constructor Summary

Constructors

Modifier	Constructor and Description
	UniformSnapshot(Collection<Long> values) Create a new Snapshot with the given values.
	UniformSnapshot(long[] values) Create a new Snapshot with the given values.
protected	UniformSnapshot(long[] values, boolean copy) Create a new Snapshot with the given values.

Method Summary

Modifier and Type	Method and Description
void	dump(OutputStream output) Writes the values of the snapshot to the given stream.
long	getMax() Returns the highest value in the snapshot.
double	getMean() Returns the arithmetic mean of the values in the snapshot.
long	getMin() Returns the lowest value in the snapshot.
double	getStdDev() Returns the standard deviation of the values in the snapshot.
double	getValue(double quantile) Returns the value at the given quantile.
long[]	getValues() Returns the entire set of values in the snapshot.
int	size() Returns the number of values in the snapshot.

Methods inherited from class io.dropwizard.metrics.Snapshot

get75thPercentile, get95thPercentile, get98thPercentile, get999thPercentile, get99thPercentile, getMedian

Methods inherited from class java.lang.Object

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

Constructor Detail

UniformSnapshot

public UniformSnapshot(Collection<Long> values)

Create a new Snapshot with the given values.

Parameters:

values - an unordered set of values in the reservoir

UniformSnapshot

public UniformSnapshot(long[] values)

Create a new Snapshot with the given values.

Parameters:

values - an unordered set of values in the reservoir

UniformSnapshot

protected UniformSnapshot(long[] values,
                          boolean copy)

Create a new Snapshot with the given values. Allows for trusted code to provide an array that won't be copied, for performance reasons.

Parameters:

values - an unordered set of values in the reservoir

copy - whether the array should be copied by the constructor

Method Detail

getValue

public double getValue(double quantile)

Returns the value at the given quantile.

Specified by:

getValue in class Snapshot

Parameters:

quantile - a given quantile, in [0..1]

Returns:

the value in the distribution at quantile

size

public int size()

Returns the number of values in the snapshot.

Specified by:

size in class Snapshot

Returns:

the number of values

getValues

public long[] getValues()

Returns the entire set of values in the snapshot.

Specified by:

getValues in class Snapshot

Returns:

the entire set of values

getMax

public long getMax()

Returns the highest value in the snapshot.

Specified by:

getMax in class Snapshot

Returns:

the highest value

getMin

public long getMin()

Returns the lowest value in the snapshot.

Specified by:

getMin in class Snapshot

Returns:

the lowest value

getMean

public double getMean()

Returns the arithmetic mean of the values in the snapshot.

Specified by:

getMean in class Snapshot

Returns:

the arithmetic mean

getStdDev

public double getStdDev()

Returns the standard deviation of the values in the snapshot.

Specified by:

getStdDev in class Snapshot

Returns:

the standard deviation value

dump

public void dump(OutputStream output)

Writes the values of the snapshot to the given stream.

Specified by:

dump in class Snapshot

Parameters:

output - an output stream