954996e231
- Move from the old github.com/golang/glog to k8s.io/klog - klog as explicit InitFlags() so we add them as necessary - we update the other repositories that we vendor that made a similar change from glog to klog * github.com/kubernetes/repo-infra * k8s.io/gengo/ * k8s.io/kube-openapi/ * github.com/google/cadvisor - Entirely remove all references to glog - Fix some tests by explicit InitFlags in their init() methods Change-Id: I92db545ff36fcec83afe98f550c9e630098b3135
121 lines
4.3 KiB
Go
121 lines
4.3 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package collectors
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import (
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"github.com/prometheus/client_golang/prometheus"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/klog"
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stats "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
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"k8s.io/kubernetes/pkg/kubelet/metrics"
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serverstats "k8s.io/kubernetes/pkg/kubelet/server/stats"
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)
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var (
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volumeStatsCapacityBytesDesc = prometheus.NewDesc(
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prometheus.BuildFQName("", metrics.KubeletSubsystem, metrics.VolumeStatsCapacityBytesKey),
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"Capacity in bytes of the volume",
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[]string{"namespace", "persistentvolumeclaim"}, nil,
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)
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volumeStatsAvailableBytesDesc = prometheus.NewDesc(
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prometheus.BuildFQName("", metrics.KubeletSubsystem, metrics.VolumeStatsAvailableBytesKey),
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"Number of available bytes in the volume",
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[]string{"namespace", "persistentvolumeclaim"}, nil,
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)
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volumeStatsUsedBytesDesc = prometheus.NewDesc(
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prometheus.BuildFQName("", metrics.KubeletSubsystem, metrics.VolumeStatsUsedBytesKey),
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"Number of used bytes in the volume",
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[]string{"namespace", "persistentvolumeclaim"}, nil,
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)
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volumeStatsInodesDesc = prometheus.NewDesc(
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prometheus.BuildFQName("", metrics.KubeletSubsystem, metrics.VolumeStatsInodesKey),
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"Maximum number of inodes in the volume",
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[]string{"namespace", "persistentvolumeclaim"}, nil,
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)
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volumeStatsInodesFreeDesc = prometheus.NewDesc(
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prometheus.BuildFQName("", metrics.KubeletSubsystem, metrics.VolumeStatsInodesFreeKey),
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"Number of free inodes in the volume",
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[]string{"namespace", "persistentvolumeclaim"}, nil,
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)
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volumeStatsInodesUsedDesc = prometheus.NewDesc(
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prometheus.BuildFQName("", metrics.KubeletSubsystem, metrics.VolumeStatsInodesUsedKey),
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"Number of used inodes in the volume",
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[]string{"namespace", "persistentvolumeclaim"}, nil,
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)
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)
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type volumeStatsCollector struct {
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statsProvider serverstats.StatsProvider
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}
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// NewVolumeStatsCollector creates a volume stats prometheus collector.
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func NewVolumeStatsCollector(statsProvider serverstats.StatsProvider) prometheus.Collector {
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return &volumeStatsCollector{statsProvider: statsProvider}
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}
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// Describe implements the prometheus.Collector interface.
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func (collector *volumeStatsCollector) Describe(ch chan<- *prometheus.Desc) {
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ch <- volumeStatsCapacityBytesDesc
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ch <- volumeStatsAvailableBytesDesc
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ch <- volumeStatsUsedBytesDesc
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ch <- volumeStatsInodesDesc
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ch <- volumeStatsInodesFreeDesc
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ch <- volumeStatsInodesUsedDesc
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}
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// Collect implements the prometheus.Collector interface.
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func (collector *volumeStatsCollector) Collect(ch chan<- prometheus.Metric) {
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podStats, err := collector.statsProvider.ListPodStats()
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if err != nil {
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return
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}
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addGauge := func(desc *prometheus.Desc, pvcRef *stats.PVCReference, v float64, lv ...string) {
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lv = append([]string{pvcRef.Namespace, pvcRef.Name}, lv...)
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metric, err := prometheus.NewConstMetric(desc, prometheus.GaugeValue, v, lv...)
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if err != nil {
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klog.Warningf("Failed to generate metric: %v", err)
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return
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}
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ch <- metric
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}
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allPVCs := sets.String{}
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for _, podStat := range podStats {
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if podStat.VolumeStats == nil {
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continue
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}
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for _, volumeStat := range podStat.VolumeStats {
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pvcRef := volumeStat.PVCRef
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if pvcRef == nil {
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// ignore if no PVC reference
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continue
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}
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pvcUniqStr := pvcRef.Namespace + "/" + pvcRef.Name
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if allPVCs.Has(pvcUniqStr) {
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// ignore if already collected
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continue
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}
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addGauge(volumeStatsCapacityBytesDesc, pvcRef, float64(*volumeStat.CapacityBytes))
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addGauge(volumeStatsAvailableBytesDesc, pvcRef, float64(*volumeStat.AvailableBytes))
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addGauge(volumeStatsUsedBytesDesc, pvcRef, float64(*volumeStat.UsedBytes))
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addGauge(volumeStatsInodesDesc, pvcRef, float64(*volumeStat.Inodes))
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addGauge(volumeStatsInodesFreeDesc, pvcRef, float64(*volumeStat.InodesFree))
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addGauge(volumeStatsInodesUsedDesc, pvcRef, float64(*volumeStat.InodesUsed))
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allPVCs.Insert(pvcUniqStr)
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}
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}
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}
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