k3s/vendor/go.etcd.io/etcd/auth/metrics.go

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2020-05-07 05:09:19 +00:00
// 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 auth
import (
"github.com/prometheus/client_golang/prometheus"
"sync"
)
var (
currentAuthRevision = prometheus.NewGaugeFunc(prometheus.GaugeOpts{
Namespace: "etcd_debugging",
Subsystem: "auth",
Name: "revision",
Help: "The current revision of auth store.",
},
func() float64 {
reportCurrentAuthRevMu.RLock()
defer reportCurrentAuthRevMu.RUnlock()
return reportCurrentAuthRev()
},
)
// overridden by auth store initialization
reportCurrentAuthRevMu sync.RWMutex
reportCurrentAuthRev = func() float64 { return 0 }
)
func init() {
prometheus.MustRegister(currentAuthRevision)
}