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cri_provider, unit tests: ensure container-level metrics are collected

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Signed-off-by: Itamar Holder <iholder@redhat.com>
This commit is contained in:
Itamar Holder 2025-01-06 10:42:40 +02:00
parent 748b52a130
commit e6c19f315f
2 changed files with 41 additions and 0 deletions
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6
pkg/kubelet/stats/cri_stats_provider_test.go
View File

@ -279,6 +279,8 @@ func TestCRIListPodStats(t *testing.T) {
checkCRIPodCPUAndMemoryStats(assert, p0, infos[sandbox0Cgroup].Stats[0])
checkCRIPodSwapStats(assert, p0, infos[sandbox0Cgroup].Stats[0])
checkContainersSwapStats(t, p0, infos[container0.Id], infos[container1.Id])
p1 := podStatsMap[statsapi.PodReference{Name: "sandbox1-name", UID: "sandbox1-uid", Namespace: "sandbox1-ns"}]
assert.Equal(sandbox1.CreatedAt, p1.StartTime.UnixNano())
assert.Len(p1.Containers, 1)
@ -296,6 +298,8 @@ func TestCRIListPodStats(t *testing.T) {
checkCRIPodCPUAndMemoryStats(assert, p1, infos[sandbox1Cgroup].Stats[0])
checkCRIPodSwapStats(assert, p1, infos[sandbox1Cgroup].Stats[0])
checkContainersSwapStats(t, p1, infos[container2.Id])
p2 := podStatsMap[statsapi.PodReference{Name: "sandbox2-name", UID: "sandbox2-uid", Namespace: "sandbox2-ns"}]
assert.Equal(sandbox2.CreatedAt, p2.StartTime.UnixNano())
assert.Len(p2.Containers, 1)
@ -315,6 +319,8 @@ func TestCRIListPodStats(t *testing.T) {
checkCRIPodCPUAndMemoryStats(assert, p2, infos[sandbox2Cgroup].Stats[0])
checkCRIPodSwapStats(assert, p2, infos[sandbox2Cgroup].Stats[0])
checkContainersSwapStats(t, p2, infos[container4.Id])
p3 := podStatsMap[statsapi.PodReference{Name: "sandbox3-name", UID: "sandbox3-uid", Namespace: "sandbox3-ns"}]
assert.Equal(sandbox3.CreatedAt, p3.StartTime.UnixNano())
assert.Len(p3.Containers, 1)

35
pkg/kubelet/stats/provider_test.go
View File

@ -19,6 +19,8 @@ package stats
import (
"context"
"fmt"
"runtime"
"strings"
"testing"
"time"
@ -505,6 +507,39 @@ func checkFsStats(t *testing.T, label string, seed int, stats *statsapi.FsStats)
assert.EqualValues(t, seed+offsetFsInodesFree, *stats.InodesFree, label+".InodesFree")
}
func checkContainersSwapStats(t *testing.T, podStats statsapi.PodStats, containerStats ...cadvisorapiv2.ContainerInfo) {
if runtime.GOOS != "linux" {
return
}
podContainers := make(map[string]struct{}, len(podStats.Containers))
for _, container := range podStats.Containers {
podContainers[container.Name] = struct{}{}
}
for _, container := range containerStats {
found := false
containerName := container.Spec.Labels["io.kubernetes.container.name"]
for _, containerPodStats := range podStats.Containers {
if containerPodStats.Name == containerName {
assert.Equal(t, container.Stats[0].Memory.Swap, *containerPodStats.Swap.SwapUsageBytes)
found = true
}
}
assert.True(t, found, "container %s not found in pod stats", container.Spec.Labels["io.kubernetes.container.name"])
delete(podContainers, containerName)
}
var missingContainerNames []string
for containerName := range podContainers {
missingContainerNames = append(missingContainerNames, containerName)
}
assert.Emptyf(t, podContainers, "containers not found in pod stats: %v", strings.Join(missingContainerNames, " "))
if len(missingContainerNames) > 0 {
assert.FailNow(t, "containers not found in pod stats")
}
}
func checkEphemeralStats(t *testing.T, label string, containerSeeds []int, volumeSeeds []int, containerLogStats []*volume.Metrics, stats *statsapi.FsStats) {
var usedBytes, inodeUsage int
for _, cseed := range containerSeeds {