forked from mirror/client_golang
Update basic example to use custom registry
Signed-off-by: Jéssica Lins <jessicaalins@gmail.com>
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@ -35,39 +35,51 @@
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// "github.com/prometheus/client_golang/prometheus/promhttp"
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// )
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//
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// var (
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// cpuTemp = prometheus.NewGauge(prometheus.GaugeOpts{
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// Name: "cpu_temperature_celsius",
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// Help: "Current temperature of the CPU.",
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// })
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// hdFailures = prometheus.NewCounterVec(
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// prometheus.CounterOpts{
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// Name: "hd_errors_total",
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// Help: "Number of hard-disk errors.",
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// },
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// []string{"device"},
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// )
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// )
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// type metrics struct {
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// cpuTemp prometheus.Gauge
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// hdFailures *prometheus.CounterVec
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// }
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//
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// func init() {
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// // Metrics have to be registered to be exposed:
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// prometheus.MustRegister(cpuTemp)
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// prometheus.MustRegister(hdFailures)
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// func NewMetrics(reg prometheus.Registerer) *metrics {
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// m := &metrics{
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// cpuTemp: prometheus.NewGauge(prometheus.GaugeOpts{
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// Name: "cpu_temperature_celsius",
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// Help: "Current temperature of the CPU.",
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// }),
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// hdFailures: prometheus.NewCounterVec(
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// prometheus.CounterOpts{
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// Name: "hd_errors_total",
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// Help: "Number of hard-disk errors.",
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// },
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// []string{"device"},
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// ),
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// }
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// reg.MustRegister(m.cpuTemp)
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// reg.MustRegister(m.hdFailures)
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// return m
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// }
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//
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// func main() {
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// cpuTemp.Set(65.3)
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// hdFailures.With(prometheus.Labels{"device":"/dev/sda"}).Inc()
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// // Create a non-global registry.
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// reg := prometheus.NewRegistry()
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//
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// // The Handler function provides a default handler to expose metrics
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// // via an HTTP server. "/metrics" is the usual endpoint for that.
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// http.Handle("/metrics", promhttp.Handler())
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// // Create new metrics and register them using the custom registry.
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// m := NewMetrics(reg)
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// // Set values for the new created metrics.
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// m.cpuTemp.Set(65.3)
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// m.hdFailures.With(prometheus.Labels{"device":"/dev/sda"}).Inc()
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//
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// // Expose metrics and custom registry via an HTTP server
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// // using the HandleFor function. "/metrics" is the usual endpoint for that.
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// http.Handle("/metrics", promhttp.HandlerFor(reg, promhttp.HandlerOpts{Registry: reg}))
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// log.Fatal(http.ListenAndServe(":8080", nil))
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// }
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//
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//
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// This is a complete program that exports two metrics, a Gauge and a Counter,
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// the latter with a label attached to turn it into a (one-dimensional) vector.
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// It register the metrics using a custom registry and exposes them via an HTTP server
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// on the /metrics endpoint.
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//
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// Metrics
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//
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