mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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295 lines
8.9 KiB
Go
295 lines
8.9 KiB
Go
//go:build linux
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// +build linux
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/*
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Copyright 2016 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 cm
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import (
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"github.com/stretchr/testify/assert"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"strings"
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"testing"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/types"
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)
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func TestIsCgroupPod(t *testing.T) {
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qosContainersInfo := QOSContainersInfo{
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Guaranteed: RootCgroupName,
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Burstable: NewCgroupName(RootCgroupName, strings.ToLower(string(v1.PodQOSBurstable))),
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BestEffort: NewCgroupName(RootCgroupName, strings.ToLower(string(v1.PodQOSBestEffort))),
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}
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podUID := types.UID("123")
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testCases := []struct {
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input CgroupName
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expectedResult bool
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expectedUID types.UID
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}{
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{
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input: RootCgroupName,
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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input: NewCgroupName(qosContainersInfo.Guaranteed),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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input: NewCgroupName(qosContainersInfo.Guaranteed, GetPodCgroupNameSuffix(podUID)),
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expectedResult: true,
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expectedUID: podUID,
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},
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{
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input: NewCgroupName(qosContainersInfo.Guaranteed, GetPodCgroupNameSuffix(podUID), "container.scope"),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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input: NewCgroupName(qosContainersInfo.Burstable),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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input: NewCgroupName(qosContainersInfo.Burstable, GetPodCgroupNameSuffix(podUID)),
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expectedResult: true,
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expectedUID: podUID,
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},
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{
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input: NewCgroupName(qosContainersInfo.Burstable, GetPodCgroupNameSuffix(podUID), "container.scope"),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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input: NewCgroupName(qosContainersInfo.BestEffort),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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input: NewCgroupName(qosContainersInfo.BestEffort, GetPodCgroupNameSuffix(podUID)),
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expectedResult: true,
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expectedUID: podUID,
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},
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{
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input: NewCgroupName(qosContainersInfo.BestEffort, GetPodCgroupNameSuffix(podUID), "container.scope"),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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input: NewCgroupName(RootCgroupName, "system"),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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input: NewCgroupName(RootCgroupName, "system", "kubelet"),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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{
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// contains reserved word "pod" in cgroup name
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input: NewCgroupName(RootCgroupName, GetPodCgroupNameSuffix("this-uid-contains-reserved-word-pod")),
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expectedResult: false,
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expectedUID: types.UID(""),
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},
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}
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for _, cgroupDriver := range []string{"cgroupfs", "systemd"} {
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pcm := &podContainerManagerImpl{
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cgroupManager: NewCgroupManager(nil, cgroupDriver),
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enforceCPULimits: true,
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qosContainersInfo: qosContainersInfo,
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}
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for _, testCase := range testCases {
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// Give the right cgroup structure based on whether systemd is enabled.
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var name string
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if cgroupDriver == "systemd" {
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name = testCase.input.ToSystemd()
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} else {
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name = testCase.input.ToCgroupfs()
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}
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// check if this is a pod or not with the literal cgroupfs input
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result, resultUID := pcm.IsPodCgroup(name)
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if result != testCase.expectedResult {
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t.Errorf("Unexpected result for driver: %v, input: %v, expected: %v, actual: %v", cgroupDriver, testCase.input, testCase.expectedResult, result)
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}
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if resultUID != testCase.expectedUID {
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t.Errorf("Unexpected result for driver: %v, input: %v, expected: %v, actual: %v", cgroupDriver, testCase.input, testCase.expectedUID, resultUID)
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}
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}
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}
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}
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func TestGetPodContainerName(t *testing.T) {
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newGuaranteedPodWithUID := func(uid types.UID) *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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UID: uid,
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container",
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1000m"),
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v1.ResourceMemory: resource.MustParse("1G"),
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},
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Limits: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1000m"),
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v1.ResourceMemory: resource.MustParse("1G"),
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},
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},
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},
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},
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},
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}
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}
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newBurstablePodWithUID := func(uid types.UID) *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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UID: uid,
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container",
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Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("1000m"),
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v1.ResourceMemory: resource.MustParse("1G"),
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},
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},
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},
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},
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},
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}
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}
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newBestEffortPodWithUID := func(uid types.UID) *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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UID: uid,
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "container",
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},
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},
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},
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}
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}
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qosContainersInfo := QOSContainersInfo{
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Guaranteed: RootCgroupName,
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Burstable: NewCgroupName(RootCgroupName, strings.ToLower(string(v1.PodQOSBurstable))),
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BestEffort: NewCgroupName(RootCgroupName, strings.ToLower(string(v1.PodQOSBestEffort))),
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}
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type fields struct {
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cgroupManager CgroupManager
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}
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type args struct {
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pod *v1.Pod
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}
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tests := []struct {
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name string
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fields fields
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args args
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wantCgroupName CgroupName
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wantLiteralCgroupfs string
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}{
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{
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name: "pod with qos guaranteed and cgroupfs",
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fields: fields{
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cgroupManager: NewCgroupManager(nil, "cgroupfs"),
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},
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args: args{
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pod: newGuaranteedPodWithUID("fake-uid-1"),
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},
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wantCgroupName: NewCgroupName(qosContainersInfo.Guaranteed, "podfake-uid-1"),
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wantLiteralCgroupfs: NewCgroupName(qosContainersInfo.Guaranteed, "podfake-uid-1").ToCgroupfs(),
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}, {
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name: "pod with qos guaranteed and systemd",
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fields: fields{
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cgroupManager: NewCgroupManager(nil, "systemd"),
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},
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args: args{
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pod: newGuaranteedPodWithUID("fake-uid-2"),
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},
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wantCgroupName: NewCgroupName(qosContainersInfo.Guaranteed, "podfake-uid-2"),
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wantLiteralCgroupfs: NewCgroupName(qosContainersInfo.Guaranteed, "podfake-uid-2").ToSystemd(),
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}, {
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name: "pod with qos burstable and cgroupfs",
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fields: fields{
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cgroupManager: NewCgroupManager(nil, "cgroupfs"),
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},
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args: args{
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pod: newBurstablePodWithUID("fake-uid-3"),
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},
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wantCgroupName: NewCgroupName(qosContainersInfo.Burstable, "podfake-uid-3"),
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wantLiteralCgroupfs: NewCgroupName(qosContainersInfo.Burstable, "podfake-uid-3").ToCgroupfs(),
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}, {
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name: "pod with qos burstable and systemd",
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fields: fields{
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cgroupManager: NewCgroupManager(nil, "systemd"),
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},
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args: args{
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pod: newBurstablePodWithUID("fake-uid-4"),
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},
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wantCgroupName: NewCgroupName(qosContainersInfo.Burstable, "podfake-uid-4"),
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wantLiteralCgroupfs: NewCgroupName(qosContainersInfo.Burstable, "podfake-uid-4").ToSystemd(),
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}, {
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name: "pod with qos best-effort and cgroupfs",
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fields: fields{
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cgroupManager: NewCgroupManager(nil, "cgroupfs"),
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},
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args: args{
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pod: newBestEffortPodWithUID("fake-uid-5"),
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},
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wantCgroupName: NewCgroupName(qosContainersInfo.BestEffort, "podfake-uid-5"),
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wantLiteralCgroupfs: NewCgroupName(qosContainersInfo.BestEffort, "podfake-uid-5").ToCgroupfs(),
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}, {
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name: "pod with qos best-effort and systemd",
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fields: fields{
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cgroupManager: NewCgroupManager(nil, "systemd"),
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},
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args: args{
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pod: newBestEffortPodWithUID("fake-uid-6"),
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},
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wantCgroupName: NewCgroupName(qosContainersInfo.BestEffort, "podfake-uid-6"),
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wantLiteralCgroupfs: NewCgroupName(qosContainersInfo.BestEffort, "podfake-uid-6").ToSystemd(),
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},
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}
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for _, tt := range tests {
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pcm := &podContainerManagerImpl{
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cgroupManager: tt.fields.cgroupManager,
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qosContainersInfo: qosContainersInfo,
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}
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t.Run(tt.name, func(t *testing.T) {
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actualCgroupName, actualLiteralCgroupfs := pcm.GetPodContainerName(tt.args.pod)
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assert.Equalf(t, tt.wantCgroupName, actualCgroupName, "Unexpected cgroup name for pod with UID %s, container resources: %v", tt.args.pod.UID, tt.args.pod.Spec.Containers[0].Resources)
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assert.Equalf(t, tt.wantLiteralCgroupfs, actualLiteralCgroupfs, "Unexpected literal cgroupfs for pod with UID %s, container resources: %v", tt.args.pod.UID, tt.args.pod.Spec.Containers[0].Resources)
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})
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}
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}
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