expvar

package
Version: v0.12.0 Latest Latest
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Published: Sep 18, 2021 License: MIT Imports: 4 Imported by: 43

Documentation

Overview

Package expvar provides expvar backends for metrics. Label values are not supported.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type Counter added in v0.3.0

type Counter struct {
	// contains filtered or unexported fields
}

Counter implements the counter metric with an expvar float. Label values are not supported.

func NewCounter

func NewCounter(name string) *Counter

NewCounter creates an expvar Float with the given name, and returns an object that implements the Counter interface.

func (*Counter) Add added in v0.3.0

func (c *Counter) Add(delta float64)

Add implements Counter.

func (*Counter) With added in v0.3.0

func (c *Counter) With(labelValues ...string) metrics.Counter

With is a no-op.

type Gauge added in v0.3.0

type Gauge struct {
	// contains filtered or unexported fields
}

Gauge implements the gauge metric with an expvar float. Label values are not supported.

func NewGauge

func NewGauge(name string) *Gauge

NewGauge creates an expvar Float with the given name, and returns an object that implements the Gauge interface.

func (*Gauge) Add added in v0.4.0

func (g *Gauge) Add(delta float64)

Add implements metrics.Gauge.

func (*Gauge) Set added in v0.3.0

func (g *Gauge) Set(value float64)

Set implements Gauge.

func (*Gauge) With added in v0.3.0

func (g *Gauge) With(labelValues ...string) metrics.Gauge

With is a no-op.

type Histogram added in v0.3.0

type Histogram struct {
	// contains filtered or unexported fields
}

Histogram implements the histogram metric with a combination of the generic Histogram object and several expvar Floats, one for each of the 50th, 90th, 95th, and 99th quantiles of observed values, with the quantile attached to the name as a suffix. Label values are not supported.

func NewHistogram

func NewHistogram(name string, buckets int) *Histogram

NewHistogram returns a Histogram object with the given name and number of buckets in the underlying histogram object. 50 is a good default number of buckets.

func (*Histogram) Observe added in v0.3.0

func (h *Histogram) Observe(value float64)

Observe implements Histogram.

func (*Histogram) With added in v0.3.0

func (h *Histogram) With(labelValues ...string) metrics.Histogram

With is a no-op.

Source Files

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