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Package prometheus

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Published: Jun 3, 2020 | License: Apache-2.0 | Module:


Package prometheus contains a Prometheus exporter that supports exporting OpenCensus views as Prometheus metrics.



package main

import (

func main() {
	exporter, err := prometheus.NewExporter(prometheus.Options{})
	if err != nil {

	// Serve the scrape endpoint on port 9999.
	http.Handle("/metrics", exporter)
	log.Fatal(http.ListenAndServe(":9999", nil))



type Exporter

type Exporter struct {
	// contains filtered or unexported fields

Exporter exports stats to Prometheus, users need to register the exporter as an http.Handler to be able to export.

func NewExporter

func NewExporter(o Options) (*Exporter, error)

NewExporter returns an exporter that exports stats to Prometheus.

func (*Exporter) ExportView

func (e *Exporter) ExportView(vd *view.Data)

ExportView exports to the Prometheus if view data has one or more rows. Each OpenCensus AggregationData will be converted to corresponding Prometheus Metric: SumData will be converted to Untyped Metric, CountData will be a Counter Metric, DistributionData will be a Histogram Metric. Deprecated in lieu of metricexport.Reader interface.

func (*Exporter) ServeHTTP

func (e *Exporter) ServeHTTP(w http.ResponseWriter, r *http.Request)

ServeHTTP serves the Prometheus endpoint.

type Options

type Options struct {
	Namespace   string
	Registry    *prometheus.Registry
	Registerer  prometheus.Registerer
	Gatherer    prometheus.Gatherer
	OnError     func(err error)
	ConstLabels prometheus.Labels // ConstLabels will be set as labels on all views.

Options contains options for configuring the exporter.

Package Files

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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