| // 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) |
| } |