Exemple #1
0
package rafthttp

import (
	"time"

	"github.com/coreos/mantle/Godeps/_workspace/src/github.com/coreos/etcd/pkg/types"
	"github.com/coreos/mantle/Godeps/_workspace/src/github.com/coreos/etcd/raft/raftpb"
	"github.com/coreos/mantle/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus"
)

var (
	msgSentDuration = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Namespace: "etcd",
			Subsystem: "rafthttp",
			Name:      "message_sent_latency_microseconds",
			Help:      "message sent latency distributions.",
		},
		[]string{"sendingType", "remoteID", "msgType"},
	)

	msgSentFailed = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: "etcd",
		Subsystem: "rafthttp",
		Name:      "message_sent_failed_total",
		Help:      "The total number of failed messages sent.",
	},
		[]string{"sendingType", "remoteID", "msgType"},
	)
)
Exemple #2
0
func ExampleSummaryVec() {
	temps := prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Name: "pond_temperature_celsius",
			Help: "The temperature of the frog pond.", // Sorry, we can't measure how badly it smells.
		},
		[]string{"species"},
	)

	// Simulate some observations.
	for i := 0; i < 1000; i++ {
		temps.WithLabelValues("litoria-caerulea").Observe(30 + math.Floor(120*math.Sin(float64(i)*0.1))/10)
		temps.WithLabelValues("lithobates-catesbeianus").Observe(32 + math.Floor(100*math.Cos(float64(i)*0.11))/10)
	}

	// Create a Summary without any observations.
	temps.WithLabelValues("leiopelma-hochstetteri")

	// Just for demonstration, let's check the state of the summary vector
	// by (ab)using its Collect method and the Write method of its elements
	// (which is usually only used by Prometheus internally - code like the
	// following will never appear in your own code).
	metricChan := make(chan prometheus.Metric)
	go func() {
		defer close(metricChan)
		temps.Collect(metricChan)
	}()

	metricStrings := []string{}
	for metric := range metricChan {
		dtoMetric := &dto.Metric{}
		metric.Write(dtoMetric)
		metricStrings = append(metricStrings, proto.MarshalTextString(dtoMetric))
	}
	sort.Strings(metricStrings) // For reproducible print order.
	fmt.Println(metricStrings)

	// Output:
	// [label: <
	//   name: "species"
	//   value: "leiopelma-hochstetteri"
	// >
	// summary: <
	//   sample_count: 0
	//   sample_sum: 0
	//   quantile: <
	//     quantile: 0.5
	//     value: nan
	//   >
	//   quantile: <
	//     quantile: 0.9
	//     value: nan
	//   >
	//   quantile: <
	//     quantile: 0.99
	//     value: nan
	//   >
	// >
	//  label: <
	//   name: "species"
	//   value: "lithobates-catesbeianus"
	// >
	// summary: <
	//   sample_count: 1000
	//   sample_sum: 31956.100000000017
	//   quantile: <
	//     quantile: 0.5
	//     value: 32.4
	//   >
	//   quantile: <
	//     quantile: 0.9
	//     value: 41.4
	//   >
	//   quantile: <
	//     quantile: 0.99
	//     value: 41.9
	//   >
	// >
	//  label: <
	//   name: "species"
	//   value: "litoria-caerulea"
	// >
	// summary: <
	//   sample_count: 1000
	//   sample_sum: 29969.50000000001
	//   quantile: <
	//     quantile: 0.5
	//     value: 31.1
	//   >
	//   quantile: <
	//     quantile: 0.9
	//     value: 41.3
	//   >
	//   quantile: <
	//     quantile: 0.99
	//     value: 41.9
	//   >
	// >
	// ]
}