etcd-io__etcd/etcdserver/api/rafthttp/metrics.go

// Copyright 2015 The etcd Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package rafthttp

import "github.com/prometheus/client_golang/prometheus"

var (
	activePeers = prometheus.NewGaugeVec(prometheus.GaugeOpts{
		Namespace: "etcd",
		Subsystem: "network",
		Name:      "active_peers",
		Help:      "The current number of active peer connections.",
	},
		[]string{"Local", "Remote"},
	)

	disconnectedPeers = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: "etcd",
		Subsystem: "network",
		Name:      "disconnected_peers_total",
		Help:      "The total number of disconnected peers.",
	},
		[]string{"Local", "Remote"},
	)

	sentBytes = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: "etcd",
		Subsystem: "network",
		Name:      "peer_sent_bytes_total",
		Help:      "The total number of bytes sent to peers.",
	},
		[]string{"To"},
	)

	receivedBytes = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: "etcd",
		Subsystem: "network",
		Name:      "peer_received_bytes_total",
		Help:      "The total number of bytes received from peers.",
	},
		[]string{"From"},
	)

	sentFailures = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: "etcd",
		Subsystem: "network",
		Name:      "peer_sent_failures_total",
		Help:      "The total number of send failures from peers.",
	},
		[]string{"To"},
	)

	recvFailures = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: "etcd",
		Subsystem: "network",
		Name:      "peer_received_failures_total",
		Help:      "The total number of receive failures from peers.",
	},
		[]string{"From"},
	)

	rttSec = prometheus.NewHistogramVec(prometheus.HistogramOpts{
		Namespace: "etcd",
		Subsystem: "network",
		Name:      "peer_round_trip_time_seconds",
		Help:      "Round-Trip-Time histogram between peers.",

		// lowest bucket start of upper bound 0.0001 sec (0.1 ms) with factor 2
		// highest bucket start of 0.0001 sec * 2^15 == 3.2768 sec
		Buckets: prometheus.ExponentialBuckets(0.0001, 2, 16),
	},
		[]string{"To"},
	)
)

func init() {
	prometheus.MustRegister(activePeers)
	prometheus.MustRegister(disconnectedPeers)
	prometheus.MustRegister(sentBytes)
	prometheus.MustRegister(receivedBytes)
	prometheus.MustRegister(sentFailures)
	prometheus.MustRegister(recvFailures)
	prometheus.MustRegister(rttSec)
}