mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-31 13:50:01 +00:00
114 lines
3.2 KiB
Go
114 lines
3.2 KiB
Go
/*
|
|
Copyright 2018 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"
|
|
"k8s.io/kubernetes/pkg/kubelet/volumemanager/cache"
|
|
"k8s.io/kubernetes/pkg/volume"
|
|
volumeutil "k8s.io/kubernetes/pkg/volume/util"
|
|
)
|
|
|
|
const (
|
|
pluginNameNotAvailable = "N/A"
|
|
|
|
// Metric keys for Volume Manager.
|
|
volumeManagerTotalVolumes = "volume_manager_total_volumes"
|
|
)
|
|
|
|
var (
|
|
registerMetrics sync.Once
|
|
|
|
totalVolumesDesc = metrics.NewDesc(
|
|
volumeManagerTotalVolumes,
|
|
"Number of volumes in Volume Manager",
|
|
[]string{"plugin_name", "state"},
|
|
nil,
|
|
metrics.ALPHA, "",
|
|
)
|
|
)
|
|
|
|
// volumeCount is a map of maps used as a counter.
|
|
type volumeCount map[string]map[string]int64
|
|
|
|
func (v volumeCount) add(state, plugin string) {
|
|
count, ok := v[state]
|
|
if !ok {
|
|
count = map[string]int64{}
|
|
}
|
|
count[plugin]++
|
|
v[state] = count
|
|
}
|
|
|
|
// Register registers Volume Manager metrics.
|
|
func Register(asw cache.ActualStateOfWorld, dsw cache.DesiredStateOfWorld, pluginMgr *volume.VolumePluginMgr) {
|
|
registerMetrics.Do(func() {
|
|
legacyregistry.CustomMustRegister(&totalVolumesCollector{asw: asw, dsw: dsw, pluginMgr: pluginMgr})
|
|
})
|
|
}
|
|
|
|
type totalVolumesCollector struct {
|
|
metrics.BaseStableCollector
|
|
|
|
asw cache.ActualStateOfWorld
|
|
dsw cache.DesiredStateOfWorld
|
|
pluginMgr *volume.VolumePluginMgr
|
|
}
|
|
|
|
var _ metrics.StableCollector = &totalVolumesCollector{}
|
|
|
|
// DescribeWithStability implements the metrics.StableCollector interface.
|
|
func (c *totalVolumesCollector) DescribeWithStability(ch chan<- *metrics.Desc) {
|
|
ch <- totalVolumesDesc
|
|
}
|
|
|
|
// CollectWithStability implements the metrics.StableCollector interface.
|
|
func (c *totalVolumesCollector) CollectWithStability(ch chan<- metrics.Metric) {
|
|
for stateName, pluginCount := range c.getVolumeCount() {
|
|
for pluginName, count := range pluginCount {
|
|
ch <- metrics.NewLazyConstMetric(totalVolumesDesc,
|
|
metrics.GaugeValue,
|
|
float64(count),
|
|
pluginName,
|
|
stateName)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (c *totalVolumesCollector) getVolumeCount() volumeCount {
|
|
counter := make(volumeCount)
|
|
for _, mountedVolume := range c.asw.GetMountedVolumes() {
|
|
pluginName := volumeutil.GetFullQualifiedPluginNameForVolume(mountedVolume.PluginName, mountedVolume.VolumeSpec)
|
|
if pluginName == "" {
|
|
pluginName = pluginNameNotAvailable
|
|
}
|
|
counter.add("actual_state_of_world", pluginName)
|
|
}
|
|
|
|
for _, volumeToMount := range c.dsw.GetVolumesToMount() {
|
|
pluginName := pluginNameNotAvailable
|
|
if plugin, err := c.pluginMgr.FindPluginBySpec(volumeToMount.VolumeSpec); err == nil {
|
|
pluginName = volumeutil.GetFullQualifiedPluginNameForVolume(plugin.GetPluginName(), volumeToMount.VolumeSpec)
|
|
}
|
|
counter.add("desired_state_of_world", pluginName)
|
|
}
|
|
return counter
|
|
}
|