metrics

Documentation

Overview

Package metrics provides what in prometheus terms is called a metrics exporter.

Index

• type Exporter
  • func (exp *Exporter) IncSelectedSource(labels map[string]string)
  • func (exp *Exporter) SendDataFlow(labels map[string]string, data *source.DataFlow)
  • func (exp *Exporter) ServeHTTP(w http.ResponseWriter, r *http.Request)

Types

type Exporter

type Exporter struct {
}

Exporter can be used to both capture and serve metrics.

func (*Exporter) IncSelectedSource

func (exp *Exporter) IncSelectedSource(labels map[string]string)

INcSelectedSource is used to update the number of times a source was chosen.

func (*Exporter) SendDataFlow

func (exp *Exporter) SendDataFlow(labels map[string]string, data *source.DataFlow)

SendDataFlow can be used to update the metrics exported by the broker about network usage, in particular upload and download bandwidth. `data` Type should either be "read" or "write", referring respectively to download and upload operations.

func (*Exporter) ServeHTTP

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

ServeHTTP is just a wrapper around the ServeHTTP function of the prohttp default Handler.