k8s.io/kubernetes@v1.29.3/pkg/kubelet/stats/cri_stats_provider_linux.go (about) 1 //go:build linux 2 // +build linux 3 4 /* 5 Copyright 2023 The Kubernetes Authors. 6 7 Licensed under the Apache License, Version 2.0 (the "License"); 8 you may not use this file except in compliance with the License. 9 You may obtain a copy of the License at 10 11 http://www.apache.org/licenses/LICENSE-2.0 12 13 Unless required by applicable law or agreed to in writing, software 14 distributed under the License is distributed on an "AS IS" BASIS, 15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 See the License for the specific language governing permissions and 17 limitations under the License. 18 */ 19 20 package stats 21 22 import ( 23 "fmt" 24 "time" 25 26 cadvisorapiv2 "github.com/google/cadvisor/info/v2" 27 metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" 28 runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1" 29 statsapi "k8s.io/kubelet/pkg/apis/stats/v1alpha1" 30 ) 31 32 func (p *criStatsProvider) addCRIPodContainerStats(criSandboxStat *runtimeapi.PodSandboxStats, 33 ps *statsapi.PodStats, fsIDtoInfo map[runtimeapi.FilesystemIdentifier]*cadvisorapiv2.FsInfo, 34 containerMap map[string]*runtimeapi.Container, 35 podSandbox *runtimeapi.PodSandbox, 36 rootFsInfo *cadvisorapiv2.FsInfo, updateCPUNanoCoreUsage bool) error { 37 for _, criContainerStat := range criSandboxStat.Linux.Containers { 38 container, found := containerMap[criContainerStat.Attributes.Id] 39 if !found { 40 continue 41 } 42 // Fill available stats for full set of required pod stats 43 cs, err := p.makeContainerStats(criContainerStat, container, rootFsInfo, fsIDtoInfo, podSandbox.GetMetadata(), 44 updateCPUNanoCoreUsage) 45 if err != nil { 46 return fmt.Errorf("make container stats: %w", err) 47 } 48 ps.Containers = append(ps.Containers, *cs) 49 } 50 return nil 51 } 52 53 func addCRIPodNetworkStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) { 54 if criPodStat == nil || criPodStat.Linux == nil || criPodStat.Linux.Network == nil { 55 return 56 } 57 criNetwork := criPodStat.Linux.Network 58 iStats := statsapi.NetworkStats{ 59 Time: metav1.NewTime(time.Unix(0, criNetwork.Timestamp)), 60 InterfaceStats: criInterfaceToSummary(criNetwork.DefaultInterface), 61 Interfaces: make([]statsapi.InterfaceStats, 0, len(criNetwork.Interfaces)), 62 } 63 for _, iface := range criNetwork.Interfaces { 64 iStats.Interfaces = append(iStats.Interfaces, criInterfaceToSummary(iface)) 65 } 66 ps.Network = &iStats 67 } 68 69 func addCRIPodMemoryStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) { 70 if criPodStat == nil || criPodStat.Linux == nil || criPodStat.Linux.Memory == nil { 71 return 72 } 73 criMemory := criPodStat.Linux.Memory 74 ps.Memory = &statsapi.MemoryStats{ 75 Time: metav1.NewTime(time.Unix(0, criMemory.Timestamp)), 76 AvailableBytes: valueOfUInt64Value(criMemory.AvailableBytes), 77 UsageBytes: valueOfUInt64Value(criMemory.UsageBytes), 78 WorkingSetBytes: valueOfUInt64Value(criMemory.WorkingSetBytes), 79 RSSBytes: valueOfUInt64Value(criMemory.RssBytes), 80 PageFaults: valueOfUInt64Value(criMemory.PageFaults), 81 MajorPageFaults: valueOfUInt64Value(criMemory.MajorPageFaults), 82 } 83 } 84 85 func addCRIPodCPUStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) { 86 if criPodStat == nil || criPodStat.Linux == nil || criPodStat.Linux.Cpu == nil { 87 return 88 } 89 criCPU := criPodStat.Linux.Cpu 90 ps.CPU = &statsapi.CPUStats{ 91 Time: metav1.NewTime(time.Unix(0, criCPU.Timestamp)), 92 UsageNanoCores: valueOfUInt64Value(criCPU.UsageNanoCores), 93 UsageCoreNanoSeconds: valueOfUInt64Value(criCPU.UsageCoreNanoSeconds), 94 } 95 } 96 97 func addCRIPodProcessStats(ps *statsapi.PodStats, criPodStat *runtimeapi.PodSandboxStats) { 98 if criPodStat == nil || criPodStat.Linux == nil || criPodStat.Linux.Process == nil { 99 return 100 } 101 ps.ProcessStats = &statsapi.ProcessStats{ 102 ProcessCount: valueOfUInt64Value(criPodStat.Linux.Process.ProcessCount), 103 } 104 } 105 106 // listContainerNetworkStats returns the network stats of all the running containers. 107 // It should return (nil, nil) for platforms other than Windows. 108 func (p *criStatsProvider) listContainerNetworkStats() (map[string]*statsapi.NetworkStats, error) { 109 return nil, nil 110 }