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cri_stats_provider_linux.go
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cri_stats_provider_linux.go
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//go:build linux
// +build linux
/*
Copyright 2023 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 stats
import (
"time"
cadvisorapiv2 "github.com/google/cadvisor/info/v2"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
statsapi "k8s.io/kubelet/pkg/apis/stats/v1alpha1"
)
func (p *criStatsProvider) addCRIPodContainerStats(criSandboxStat *runtimeapi.PodSandboxStats,
ps *statsapi.PodStats, fsIDtoInfo map[runtimeapi.FilesystemIdentifier]*cadvisorapiv2.FsInfo,
containerMap map[string]*runtimeapi.Container,
podSandbox *runtimeapi.PodSandbox,
rootFsInfo *cadvisorapiv2.FsInfo, updateCPUNanoCoreUsage bool) {
for _, criContainerStat := range criSandboxStat.Linux.Containers {
container, found := containerMap[criContainerStat.Attributes.Id]
if !found {
continue
}
// Fill available stats for full set of required pod stats
cs := p.makeContainerStats(criContainerStat, container, rootFsInfo, fsIDtoInfo, podSandbox.GetMetadata(),
updateCPUNanoCoreUsage)
ps.Containers = append(ps.Containers, *cs)
}
}
func addCRIPodNetworkStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) {
if criPodStat == nil || criPodStat.Linux == nil || criPodStat.Linux.Network == nil {
return
}
criNetwork := criPodStat.Linux.Network
iStats := statsapi.NetworkStats{
Time: metav1.NewTime(time.Unix(0, criNetwork.Timestamp)),
InterfaceStats: criInterfaceToSummary(criNetwork.DefaultInterface),
Interfaces: make([]statsapi.InterfaceStats, 0, len(criNetwork.Interfaces)),
}
for _, iface := range criNetwork.Interfaces {
iStats.Interfaces = append(iStats.Interfaces, criInterfaceToSummary(iface))
}
ps.Network = &iStats
}
func addCRIPodMemoryStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) {
if criPodStat == nil || criPodStat.Linux == nil || criPodStat.Linux.Memory == nil {
return
}
criMemory := criPodStat.Linux.Memory
ps.Memory = &statsapi.MemoryStats{
Time: metav1.NewTime(time.Unix(0, criMemory.Timestamp)),
AvailableBytes: valueOfUInt64Value(criMemory.AvailableBytes),
UsageBytes: valueOfUInt64Value(criMemory.UsageBytes),
WorkingSetBytes: valueOfUInt64Value(criMemory.WorkingSetBytes),
RSSBytes: valueOfUInt64Value(criMemory.RssBytes),
PageFaults: valueOfUInt64Value(criMemory.PageFaults),
MajorPageFaults: valueOfUInt64Value(criMemory.MajorPageFaults),
}
}
func addCRIPodCPUStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) {
if criPodStat == nil || criPodStat.Linux == nil || criPodStat.Linux.Cpu == nil {
return
}
criCPU := criPodStat.Linux.Cpu
ps.CPU = &statsapi.CPUStats{
Time: metav1.NewTime(time.Unix(0, criCPU.Timestamp)),
UsageNanoCores: valueOfUInt64Value(criCPU.UsageNanoCores),
UsageCoreNanoSeconds: valueOfUInt64Value(criCPU.UsageCoreNanoSeconds),
}
}
func addCRIPodProcessStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) {
if criPodStat == nil || criPodStat.Linux == nil || criPodStat.Linux.Process == nil {
return
}
ps.ProcessStats = &statsapi.ProcessStats{
ProcessCount: valueOfUInt64Value(criPodStat.Linux.Process.ProcessCount),
}
}
// listContainerNetworkStats returns the network stats of all the running containers.
// It should return (nil, nil) for platforms other than Windows.
func (p *criStatsProvider) listContainerNetworkStats() (map[string]*statsapi.NetworkStats, error) {
return nil, nil
}