/
listener_metrics.go
89 lines (79 loc) · 2.23 KB
/
listener_metrics.go
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// Copyright 2021 FerretDB Inc.
//
// 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 connmetrics
import (
"time"
"github.com/prometheus/client_golang/prometheus"
)
// Parts of Prometheus metric names.
const (
namespace = "ferretdb"
subsystem = "client"
)
// ListenerMetrics represents listener metrics.
type ListenerMetrics struct {
Accepts *prometheus.CounterVec
Durations *prometheus.HistogramVec
ConnMetrics *ConnMetrics
}
// NewListenerMetrics creates new listener metrics.
func NewListenerMetrics() *ListenerMetrics {
return &ListenerMetrics{
Accepts: prometheus.NewCounterVec(
prometheus.CounterOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "accepts_total",
Help: "Total number of accepted client connections.",
},
[]string{"error"},
),
Durations: prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Namespace: namespace,
Subsystem: subsystem,
Name: "duration_seconds",
Help: "Client connection lifetime in seconds.",
Buckets: []float64{
1,
5,
10,
30,
(1 * time.Minute).Seconds(),
(5 * time.Minute).Seconds(),
(10 * time.Minute).Seconds(),
(30 * time.Minute).Seconds(),
},
},
[]string{"error"},
),
ConnMetrics: newConnMetrics(),
}
}
// Describe implements prometheus.Collector.
func (lm *ListenerMetrics) Describe(ch chan<- *prometheus.Desc) {
lm.Accepts.Describe(ch)
lm.Durations.Describe(ch)
lm.ConnMetrics.Describe(ch)
}
// Collect implements prometheus.Collector.
func (lm *ListenerMetrics) Collect(ch chan<- prometheus.Metric) {
lm.Accepts.Collect(ch)
lm.Durations.Collect(ch)
lm.ConnMetrics.Collect(ch)
}
// check interfaces
var (
_ prometheus.Collector = (*ListenerMetrics)(nil)
)