mirror of https://github.com/k3s-io/k3s
455 lines
14 KiB
Go
455 lines
14 KiB
Go
/*
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Copyright 2015 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 resourcequota
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import (
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"fmt"
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"strings"
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"testing"
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"k8s.io/api/core/v1"
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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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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/client-go/informers"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/kubernetes/fake"
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core "k8s.io/client-go/testing"
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"k8s.io/client-go/tools/cache"
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"k8s.io/kubernetes/pkg/controller"
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"k8s.io/kubernetes/pkg/quota"
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"k8s.io/kubernetes/pkg/quota/generic"
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"k8s.io/kubernetes/pkg/quota/install"
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)
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func getResourceList(cpu, memory string) v1.ResourceList {
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res := v1.ResourceList{}
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if cpu != "" {
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res[v1.ResourceCPU] = resource.MustParse(cpu)
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}
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if memory != "" {
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res[v1.ResourceMemory] = resource.MustParse(memory)
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}
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return res
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}
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func getResourceRequirements(requests, limits v1.ResourceList) v1.ResourceRequirements {
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res := v1.ResourceRequirements{}
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res.Requests = requests
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res.Limits = limits
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return res
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}
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func mockDiscoveryFunc() ([]*metav1.APIResourceList, error) {
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return []*metav1.APIResourceList{}, nil
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}
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func mockListerForResourceFunc(listersForResource map[schema.GroupVersionResource]cache.GenericLister) quota.ListerForResourceFunc {
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return func(gvr schema.GroupVersionResource) (cache.GenericLister, error) {
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lister, found := listersForResource[gvr]
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if !found {
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return nil, fmt.Errorf("no lister found for resource")
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}
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return lister, nil
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}
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}
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func newGenericLister(groupResource schema.GroupResource, items []runtime.Object) cache.GenericLister {
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store := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{"namespace": cache.MetaNamespaceIndexFunc})
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for _, item := range items {
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store.Add(item)
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}
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return cache.NewGenericLister(store, groupResource)
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}
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type quotaController struct {
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*ResourceQuotaController
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stop chan struct{}
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}
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func setupQuotaController(t *testing.T, kubeClient kubernetes.Interface, lister quota.ListerForResourceFunc) quotaController {
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informerFactory := informers.NewSharedInformerFactory(kubeClient, controller.NoResyncPeriodFunc())
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quotaConfiguration := install.NewQuotaConfigurationForControllers(lister)
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alwaysStarted := make(chan struct{})
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close(alwaysStarted)
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resourceQuotaControllerOptions := &ResourceQuotaControllerOptions{
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QuotaClient: kubeClient.CoreV1(),
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ResourceQuotaInformer: informerFactory.Core().V1().ResourceQuotas(),
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ResyncPeriod: controller.NoResyncPeriodFunc,
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ReplenishmentResyncPeriod: controller.NoResyncPeriodFunc,
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IgnoredResourcesFunc: quotaConfiguration.IgnoredResources,
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DiscoveryFunc: mockDiscoveryFunc,
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Registry: generic.NewRegistry(quotaConfiguration.Evaluators()),
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InformersStarted: alwaysStarted,
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}
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qc, err := NewResourceQuotaController(resourceQuotaControllerOptions)
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if err != nil {
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t.Fatal(err)
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}
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stop := make(chan struct{})
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go informerFactory.Start(stop)
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return quotaController{qc, stop}
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}
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func newTestPods() []runtime.Object {
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return []runtime.Object{
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&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "pod-running", Namespace: "testing"},
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Status: v1.PodStatus{Phase: v1.PodRunning},
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Spec: v1.PodSpec{
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Volumes: []v1.Volume{{Name: "vol"}},
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Containers: []v1.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements(getResourceList("100m", "1Gi"), getResourceList("", ""))}},
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},
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},
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&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "pod-running-2", Namespace: "testing"},
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Status: v1.PodStatus{Phase: v1.PodRunning},
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Spec: v1.PodSpec{
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Volumes: []v1.Volume{{Name: "vol"}},
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Containers: []v1.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements(getResourceList("100m", "1Gi"), getResourceList("", ""))}},
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},
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},
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&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "pod-failed", Namespace: "testing"},
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Status: v1.PodStatus{Phase: v1.PodFailed},
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Spec: v1.PodSpec{
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Volumes: []v1.Volume{{Name: "vol"}},
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Containers: []v1.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements(getResourceList("100m", "1Gi"), getResourceList("", ""))}},
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},
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},
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}
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}
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func TestSyncResourceQuota(t *testing.T) {
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testCases := map[string]struct {
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gvr schema.GroupVersionResource
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items []runtime.Object
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quota v1.ResourceQuota
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status v1.ResourceQuotaStatus
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expectedActionSet sets.String
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}{
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"pods": {
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gvr: v1.SchemeGroupVersion.WithResource("pods"),
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quota: v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{Name: "quota", Namespace: "testing"},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("3"),
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v1.ResourceMemory: resource.MustParse("100Gi"),
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v1.ResourcePods: resource.MustParse("5"),
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},
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},
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},
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status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("3"),
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v1.ResourceMemory: resource.MustParse("100Gi"),
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v1.ResourcePods: resource.MustParse("5"),
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},
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Used: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("200m"),
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v1.ResourceMemory: resource.MustParse("2Gi"),
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v1.ResourcePods: resource.MustParse("2"),
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},
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},
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expectedActionSet: sets.NewString(
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strings.Join([]string{"update", "resourcequotas", "status"}, "-"),
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),
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items: newTestPods(),
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},
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"quota-spec-hard-updated": {
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gvr: v1.SchemeGroupVersion.WithResource("pods"),
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quota: v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: "default",
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Name: "rq",
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},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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},
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Status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("3"),
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},
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Used: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("0"),
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},
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},
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},
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status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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Used: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("0"),
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},
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},
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expectedActionSet: sets.NewString(
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strings.Join([]string{"update", "resourcequotas", "status"}, "-"),
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),
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items: []runtime.Object{},
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},
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"quota-unchanged": {
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gvr: v1.SchemeGroupVersion.WithResource("pods"),
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quota: v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: "default",
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Name: "rq",
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},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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},
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Status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("0"),
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},
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},
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},
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status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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Used: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("0"),
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},
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},
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expectedActionSet: sets.NewString(),
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items: []runtime.Object{},
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},
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}
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for testName, testCase := range testCases {
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kubeClient := fake.NewSimpleClientset(&testCase.quota)
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listersForResourceConfig := map[schema.GroupVersionResource]cache.GenericLister{
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testCase.gvr: newGenericLister(testCase.gvr.GroupResource(), testCase.items),
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}
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qc := setupQuotaController(t, kubeClient, mockListerForResourceFunc(listersForResourceConfig))
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defer close(qc.stop)
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if err := qc.syncResourceQuota(&testCase.quota); err != nil {
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t.Fatalf("test: %s, unexpected error: %v", testName, err)
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}
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actionSet := sets.NewString()
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for _, action := range kubeClient.Actions() {
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actionSet.Insert(strings.Join([]string{action.GetVerb(), action.GetResource().Resource, action.GetSubresource()}, "-"))
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}
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if !actionSet.HasAll(testCase.expectedActionSet.List()...) {
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t.Errorf("test: %s,\nExpected actions:\n%v\n but got:\n%v\nDifference:\n%v", testName, testCase.expectedActionSet, actionSet, testCase.expectedActionSet.Difference(actionSet))
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}
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lastActionIndex := len(kubeClient.Actions()) - 1
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usage := kubeClient.Actions()[lastActionIndex].(core.UpdateAction).GetObject().(*v1.ResourceQuota)
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// ensure usage is as expected
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if len(usage.Status.Hard) != len(testCase.status.Hard) {
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t.Errorf("test: %s, status hard lengths do not match", testName)
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}
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if len(usage.Status.Used) != len(testCase.status.Used) {
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t.Errorf("test: %s, status used lengths do not match", testName)
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}
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for k, v := range testCase.status.Hard {
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actual := usage.Status.Hard[k]
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actualValue := actual.String()
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expectedValue := v.String()
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if expectedValue != actualValue {
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t.Errorf("test: %s, Usage Hard: Key: %v, Expected: %v, Actual: %v", testName, k, expectedValue, actualValue)
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}
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}
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for k, v := range testCase.status.Used {
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actual := usage.Status.Used[k]
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actualValue := actual.String()
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expectedValue := v.String()
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if expectedValue != actualValue {
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t.Errorf("test: %s, Usage Used: Key: %v, Expected: %v, Actual: %v", testName, k, expectedValue, actualValue)
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}
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}
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}
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}
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func TestAddQuota(t *testing.T) {
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kubeClient := fake.NewSimpleClientset()
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gvr := v1.SchemeGroupVersion.WithResource("pods")
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listersForResourceConfig := map[schema.GroupVersionResource]cache.GenericLister{
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gvr: newGenericLister(gvr.GroupResource(), newTestPods()),
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}
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qc := setupQuotaController(t, kubeClient, mockListerForResourceFunc(listersForResourceConfig))
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defer close(qc.stop)
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testCases := []struct {
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name string
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quota *v1.ResourceQuota
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expectedPriority bool
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}{
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{
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name: "no status",
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expectedPriority: true,
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quota: &v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: "default",
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Name: "rq",
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},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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},
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},
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},
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{
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name: "status, no usage",
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expectedPriority: true,
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quota: &v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: "default",
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Name: "rq",
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},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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},
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Status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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},
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},
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},
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{
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name: "status, no usage(to validate it works for extended resources)",
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expectedPriority: true,
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quota: &v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: "default",
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Name: "rq",
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},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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"requests.example/foobars.example.com": resource.MustParse("4"),
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},
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},
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Status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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"requests.example/foobars.example.com": resource.MustParse("4"),
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},
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},
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},
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},
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{
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name: "status, mismatch",
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expectedPriority: true,
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quota: &v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: "default",
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Name: "rq",
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},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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},
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Status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("6"),
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},
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Used: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("0"),
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},
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},
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},
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},
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{
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name: "status, missing usage, but don't care (no informer)",
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expectedPriority: false,
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quota: &v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: "default",
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Name: "rq",
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},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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"foobars.example.com": resource.MustParse("4"),
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},
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},
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Status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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"foobars.example.com": resource.MustParse("4"),
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},
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},
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},
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},
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{
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name: "ready",
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expectedPriority: false,
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quota: &v1.ResourceQuota{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: "default",
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Name: "rq",
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},
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Spec: v1.ResourceQuotaSpec{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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},
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Status: v1.ResourceQuotaStatus{
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Hard: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("4"),
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},
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Used: v1.ResourceList{
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v1.ResourceCPU: resource.MustParse("0"),
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},
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},
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},
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},
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}
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for _, tc := range testCases {
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qc.addQuota(tc.quota)
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if tc.expectedPriority {
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if e, a := 1, qc.missingUsageQueue.Len(); e != a {
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t.Errorf("%s: expected %v, got %v", tc.name, e, a)
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}
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if e, a := 0, qc.queue.Len(); e != a {
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t.Errorf("%s: expected %v, got %v", tc.name, e, a)
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}
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} else {
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if e, a := 0, qc.missingUsageQueue.Len(); e != a {
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t.Errorf("%s: expected %v, got %v", tc.name, e, a)
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}
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if e, a := 1, qc.queue.Len(); e != a {
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t.Errorf("%s: expected %v, got %v", tc.name, e, a)
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}
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}
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for qc.missingUsageQueue.Len() > 0 {
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key, _ := qc.missingUsageQueue.Get()
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qc.missingUsageQueue.Done(key)
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}
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for qc.queue.Len() > 0 {
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key, _ := qc.queue.Get()
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qc.queue.Done(key)
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}
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}
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}
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