394 lines
11 KiB
Go
394 lines
11 KiB
Go
/*
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Copyright 2023 The Karmada 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 applicationfailover
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import (
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"context"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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batchv1 "k8s.io/api/batch/v1"
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corev1 "k8s.io/api/core/v1"
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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/types"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/client-go/tools/record"
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controllerruntime "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client/fake"
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policyv1alpha1 "github.com/karmada-io/karmada/pkg/apis/policy/v1alpha1"
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workv1alpha2 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2"
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"github.com/karmada-io/karmada/pkg/util/gclient"
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"github.com/karmada-io/karmada/pkg/util/helper"
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)
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func generateCRBApplicationFailoverController() *CRBApplicationFailoverController {
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m := newWorkloadUnhealthyMap()
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c := &CRBApplicationFailoverController{
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Client: fake.NewClientBuilder().WithScheme(gclient.NewSchema()).Build(),
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EventRecorder: &record.FakeRecorder{},
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workloadUnhealthyMap: m,
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}
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return c
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}
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func TestCRBApplicationFailoverController_Reconcile(t *testing.T) {
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t.Run("failed in clusterResourceBindingFilter", func(t *testing.T) {
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binding := &workv1alpha2.ClusterResourceBinding{
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ObjectMeta: metav1.ObjectMeta{
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Name: "binding",
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Namespace: "default",
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},
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Spec: workv1alpha2.ResourceBindingSpec{
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Resource: workv1alpha2.ObjectReference{
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APIVersion: "v1",
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Kind: "Pod",
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Namespace: "default",
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Name: "pod",
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},
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},
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}
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c := generateCRBApplicationFailoverController()
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// Prepare req
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req := controllerruntime.Request{
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NamespacedName: types.NamespacedName{
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Name: "binding",
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Namespace: "default",
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},
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}
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if err := c.Client.Create(context.Background(), binding); err != nil {
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t.Fatalf("Failed to create binding: %v", err)
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}
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res, err := c.Reconcile(context.Background(), req)
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assert.Equal(t, controllerruntime.Result{}, res)
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assert.Equal(t, nil, err)
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})
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t.Run("failed in c.Client.Get", func(t *testing.T) {
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c := generateCRBApplicationFailoverController()
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// Prepare req
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req := controllerruntime.Request{
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NamespacedName: types.NamespacedName{
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Name: "binding",
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Namespace: "default",
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},
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}
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res, err := c.Reconcile(context.Background(), req)
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assert.Equal(t, controllerruntime.Result{}, res)
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assert.Equal(t, nil, err)
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})
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}
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func TestCRBApplicationFailoverController_detectFailure(t *testing.T) {
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cluster1 := "cluster1"
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cluster2 := "cluster2"
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key := types.NamespacedName{
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Namespace: "default",
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Name: "test",
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}
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t.Run("hasWorkloadBeenUnhealthy return false", func(t *testing.T) {
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clusters := []string{cluster1, cluster2}
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tolerationSeconds := int32(1)
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c := generateCRBApplicationFailoverController()
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duration, needEvictClusters := c.detectFailure(clusters, &tolerationSeconds, key)
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assert.Equal(t, tolerationSeconds, duration)
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assert.Equal(t, []string(nil), needEvictClusters)
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})
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t.Run("more than the tolerance time", func(t *testing.T) {
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clusters := []string{cluster1, cluster2}
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tolerationSeconds := int32(1)
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c := generateCRBApplicationFailoverController()
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c.workloadUnhealthyMap.setTimeStamp(key, cluster1)
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time.Sleep(2 * time.Second)
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duration, needEvictClusters := c.detectFailure(clusters, &tolerationSeconds, key)
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assert.Equal(t, tolerationSeconds, duration)
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assert.Equal(t, []string{"cluster1"}, needEvictClusters)
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})
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t.Run("less than the tolerance time", func(t *testing.T) {
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clusters := []string{cluster1, cluster2}
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tolerationSeconds := int32(100)
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c := generateCRBApplicationFailoverController()
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c.workloadUnhealthyMap.setTimeStamp(key, cluster1)
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duration, needEvictClusters := c.detectFailure(clusters, &tolerationSeconds, key)
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assert.Equal(t, tolerationSeconds, duration)
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assert.Equal(t, []string(nil), needEvictClusters)
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})
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t.Run("final duration is 0", func(t *testing.T) {
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clusters := []string{}
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tolerationSeconds := int32(100)
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c := generateCRBApplicationFailoverController()
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duration, needEvictClusters := c.detectFailure(clusters, &tolerationSeconds, key)
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assert.Equal(t, int32(0), duration)
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assert.Equal(t, []string(nil), needEvictClusters)
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})
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}
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func TestCRBApplicationFailoverController_syncBinding(t *testing.T) {
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tolerationSeconds := int32(5)
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c := generateCRBApplicationFailoverController()
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binding := &workv1alpha2.ClusterResourceBinding{
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ObjectMeta: metav1.ObjectMeta{
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Name: "binding",
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Namespace: "default",
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},
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Spec: workv1alpha2.ResourceBindingSpec{
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Resource: workv1alpha2.ObjectReference{
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APIVersion: "v1",
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Kind: "Pod",
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Namespace: "default",
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Name: "pod",
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},
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Failover: &policyv1alpha1.FailoverBehavior{
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Application: &policyv1alpha1.ApplicationFailoverBehavior{
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DecisionConditions: policyv1alpha1.DecisionConditions{
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TolerationSeconds: &tolerationSeconds,
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},
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},
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},
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Clusters: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 1,
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},
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{
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Name: "member1",
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Replicas: 2,
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},
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},
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},
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Status: workv1alpha2.ResourceBindingStatus{
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AggregatedStatus: []workv1alpha2.AggregatedStatusItem{
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{
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ClusterName: "member1",
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Health: workv1alpha2.ResourceHealthy,
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},
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{
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ClusterName: "member2",
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Health: workv1alpha2.ResourceUnhealthy,
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},
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},
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},
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}
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dur, err := c.syncBinding(binding)
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assert.Equal(t, 5*time.Second, dur)
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assert.NoError(t, err)
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}
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func TestCRBApplicationFailoverController_evictBinding(t *testing.T) {
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tests := []struct {
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name string
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purgeMode policyv1alpha1.PurgeMode
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expectError bool
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}{
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{
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name: "PurgeMode is Graciously",
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purgeMode: policyv1alpha1.Graciously,
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expectError: false,
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},
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{
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name: "PurgeMode is Never",
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purgeMode: policyv1alpha1.Never,
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expectError: false,
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},
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{
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name: "PurgeMode is Immediately",
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purgeMode: policyv1alpha1.Immediately,
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expectError: false,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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c := generateCRBApplicationFailoverController()
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binding := &workv1alpha2.ClusterResourceBinding{
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ObjectMeta: metav1.ObjectMeta{
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Name: "binding",
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Namespace: "default",
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},
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Spec: workv1alpha2.ResourceBindingSpec{
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Resource: workv1alpha2.ObjectReference{
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APIVersion: "v1",
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Kind: "Pod",
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Namespace: "default",
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Name: "pod",
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},
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Failover: &policyv1alpha1.FailoverBehavior{
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Application: &policyv1alpha1.ApplicationFailoverBehavior{
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PurgeMode: tt.purgeMode,
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},
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},
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},
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}
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clusters := []string{"member1", "member2"}
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err := c.evictBinding(binding, clusters)
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if tt.expectError {
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assert.Error(t, err)
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} else {
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assert.NoError(t, err)
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}
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})
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}
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}
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func TestCRBApplicationFailoverController_updateBinding(t *testing.T) {
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binding := &workv1alpha2.ClusterResourceBinding{
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ObjectMeta: metav1.ObjectMeta{
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Name: "binding",
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Namespace: "default",
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},
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Spec: workv1alpha2.ResourceBindingSpec{
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Resource: workv1alpha2.ObjectReference{
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APIVersion: "v1",
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Kind: "Pod",
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Namespace: "default",
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Name: "pod",
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},
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},
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}
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allClusters := sets.New("member1", "member2", "member3")
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needEvictClusters := []string{"member1", "member2"}
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c := generateCRBApplicationFailoverController()
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t.Run("failed when c.Update", func(t *testing.T) {
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err := c.updateBinding(binding, allClusters, needEvictClusters)
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assert.Error(t, err)
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})
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t.Run("normal case", func(t *testing.T) {
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if err := c.Client.Create(context.Background(), binding); err != nil {
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t.Fatalf("Failed to create binding: %v", err)
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}
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err := c.updateBinding(binding, allClusters, needEvictClusters)
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assert.NoError(t, err)
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})
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}
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func generateRaw() *runtime.RawExtension {
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testTime := time.Now()
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testV1time := metav1.NewTime(testTime)
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statusMap := map[string]interface{}{
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"active": 0,
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"succeeded": 1,
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"startTime": testV1time,
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"completionTime": testV1time,
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"failed": 0,
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"conditions": []batchv1.JobCondition{{Type: batchv1.JobComplete, Status: corev1.ConditionTrue}},
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}
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raw, _ := helper.BuildStatusRawExtension(statusMap)
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return raw
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}
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func TestCRBApplicationFailoverController_clusterResourceBindingFilter(t *testing.T) {
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tests := []struct {
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name string
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binding *workv1alpha2.ClusterResourceBinding
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expectRes bool
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}{
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{
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name: "crb.Spec.Failover and crb.Spec.Failover.Application is nil",
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binding: &workv1alpha2.ClusterResourceBinding{
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ObjectMeta: metav1.ObjectMeta{
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Name: "binding",
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Namespace: "default",
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},
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Spec: workv1alpha2.ResourceBindingSpec{
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Resource: workv1alpha2.ObjectReference{
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APIVersion: "v1",
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Kind: "Pod",
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Namespace: "default",
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Name: "pod",
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},
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},
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},
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expectRes: false,
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},
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{
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name: "crb.Status.AggregatedStatus is 0",
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binding: &workv1alpha2.ClusterResourceBinding{
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ObjectMeta: metav1.ObjectMeta{
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Name: "binding",
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Namespace: "default",
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},
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Spec: workv1alpha2.ResourceBindingSpec{
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Resource: workv1alpha2.ObjectReference{
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APIVersion: "v1",
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Kind: "Pod",
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Namespace: "default",
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Name: "pod",
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},
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Failover: &policyv1alpha1.FailoverBehavior{
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Application: &policyv1alpha1.ApplicationFailoverBehavior{},
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},
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},
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},
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expectRes: false,
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},
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{
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name: "error occurs in ConstructClusterWideKey",
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binding: &workv1alpha2.ClusterResourceBinding{
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ObjectMeta: metav1.ObjectMeta{
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Name: "binding",
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Namespace: "default",
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},
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Spec: workv1alpha2.ResourceBindingSpec{
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Resource: workv1alpha2.ObjectReference{
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APIVersion: "a/b/c",
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Kind: "Pod",
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Namespace: "default",
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Name: "pod",
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},
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Failover: &policyv1alpha1.FailoverBehavior{
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Application: &policyv1alpha1.ApplicationFailoverBehavior{},
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},
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},
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Status: workv1alpha2.ResourceBindingStatus{
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AggregatedStatus: []workv1alpha2.AggregatedStatusItem{
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{ClusterName: "memberA", Status: generateRaw()},
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{ClusterName: "memberB", Status: generateRaw()},
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},
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},
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},
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expectRes: false,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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c := generateCRBApplicationFailoverController()
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res := c.clusterResourceBindingFilter(tt.binding)
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assert.Equal(t, tt.expectRes, res)
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})
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}
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}
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