kubernetes metrics 源码
kubernetes metrics 代码
文件路径：/pkg/controller/volume/ephemeral/metrics/metrics.go
/*
Copyright 2021 The Kubernetes 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 metrics
import (
"sync"
"k8s.io/component-base/metrics"
"k8s.io/component-base/metrics/legacyregistry"
)
// EphemeralVolumeSubsystem - subsystem name used for Endpoint Slices.
const EphemeralVolumeSubsystem = "ephemeral_volume_controller"
var (
// EphemeralVolumeCreateAttempts tracks the number of
// PersistentVolumeClaims().Create calls (both successful and unsuccessful)
EphemeralVolumeCreateAttempts = metrics.NewCounter(
&metrics.CounterOpts{
Subsystem: EphemeralVolumeSubsystem,
Name: "create_total",
Help: "Number of PersistenVolumeClaims creation requests",
StabilityLevel: metrics.ALPHA,
})
// EphemeralVolumeCreateFailures tracks the number of unsuccessful
// PersistentVolumeClaims().Create calls
EphemeralVolumeCreateFailures = metrics.NewCounter(
&metrics.CounterOpts{
Subsystem: EphemeralVolumeSubsystem,
Name: "create_failures_total",
Help: "Number of PersistenVolumeClaims creation requests",
StabilityLevel: metrics.ALPHA,
})
)
var registerMetrics sync.Once
// RegisterMetrics registers EphemeralVolume metrics.
func RegisterMetrics() {
registerMetrics.Do(func() {
legacyregistry.MustRegister(EphemeralVolumeCreateAttempts)
legacyregistry.MustRegister(EphemeralVolumeCreateFailures)
})
}
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