Class NativeHistogramBuckets

java.lang.Object

io.prometheus.metrics.model.snapshots.NativeHistogramBuckets

All Implemented Interfaces:

Iterable<NativeHistogramBucket>

public class NativeHistogramBuckets
extends Object
implements Iterable<NativeHistogramBucket>

Immutable representation of native histogram buckets.

The bucket index defines the boundaries of the bucket, depending on the histogram's schema.

    base = 2^(2^-schema)
    lower bound = base^(index - 1)
    upper bound = base^index

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	NativeHistogramBuckets.Builder

Field Summary

Fields

Modifier and Type	Field	Description
private final int[]	bucketIndexes
private final long[]	counts
static final NativeHistogramBuckets	EMPTY

Constructor Summary

Constructors

Modifier	Constructor	Description
private	NativeHistogramBuckets(int[] bucketIndexes, long[] counts)

Method Summary

Modifier and Type	Method	Description
private List<NativeHistogramBucket>	asList()
static NativeHistogramBuckets.Builder	builder()
int	getBucketIndex(int i)
long	getCount(int i)
Iterator<NativeHistogramBucket>	iterator()
static NativeHistogramBuckets	of(int[] bucketIndexes, long[] counts)	To create a new NativeHistogramBuckets instance, you can either use one of the static of(...) methods, or use builder().
static NativeHistogramBuckets	of(List<Integer> bucketIndexes, List<Long> counts)	To create a new NativeHistogramBuckets instance, you can either use one of the static of(...) methods, or use builder().
int	size()
private static void	sort(int[] bucketIndexes, long[] counts)
private static void	sortAndValidate(int[] bucketIndexes, long[] counts)
Stream<NativeHistogramBucket>	stream()
private static void	swap(int i, int j, int[] bucketIndexes, long[] counts)
private static void	validate(int[] bucketIndexes, long[] counts)

Methods inherited from class Object

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

Methods inherited from interface Iterable

forEach, spliterator

Field Details

EMPTY

public static final NativeHistogramBuckets EMPTY

bucketIndexes

private final int[] bucketIndexes

counts

private final long[] counts

Constructor Details

NativeHistogramBuckets

private NativeHistogramBuckets(int[] bucketIndexes,
 long[] counts)

Method Details

of

public static NativeHistogramBuckets of(int[] bucketIndexes,
 long[] counts)

To create a new NativeHistogramBuckets instance, you can either use one of the static of(...) methods, or use builder().

Parameters:

bucketIndexes - see class javadoc of NativeHistogramBuckets. May be empty.

counts - must have the same length as bucketIndexes

of

public static NativeHistogramBuckets of(List<Integer> bucketIndexes,
 List<Long> counts)

To create a new NativeHistogramBuckets instance, you can either use one of the static of(...) methods, or use builder().

Parameters:

bucketIndexes - see class javadoc of NativeHistogramBuckets. May be empty.

counts - must have the same size as bucketIndexes

size

public int size()

asList

private List<NativeHistogramBucket> asList()

iterator

public Iterator<NativeHistogramBucket> iterator()

Specified by:

iterator in interface Iterable<NativeHistogramBucket>

stream

public Stream<NativeHistogramBucket> stream()

getBucketIndex

public int getBucketIndex(int i)

getCount

public long getCount(int i)

sortAndValidate

private static void sortAndValidate(int[] bucketIndexes,
 long[] counts)

sort

private static void sort(int[] bucketIndexes,
 long[] counts)

swap

private static void swap(int i,
 int j,
 int[] bucketIndexes,
 long[] counts)

validate

private static void validate(int[] bucketIndexes,
 long[] counts)

builder

public static NativeHistogramBuckets.Builder builder()