537 lines
12 KiB
Go
537 lines
12 KiB
Go
/*
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Copyright 2022 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 descheduler
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import (
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"context"
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"reflect"
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"testing"
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"time"
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"github.com/stretchr/testify/mock"
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"google.golang.org/grpc"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/tools/cache"
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"k8s.io/client-go/tools/record"
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workv1alpha2 "github.com/karmada-io/karmada/pkg/apis/work/v1alpha2"
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estimatorclient "github.com/karmada-io/karmada/pkg/estimator/client"
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"github.com/karmada-io/karmada/pkg/estimator/pb"
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estimatorservice "github.com/karmada-io/karmada/pkg/estimator/service"
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fakekarmadaclient "github.com/karmada-io/karmada/pkg/generated/clientset/versioned/fake"
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informerfactory "github.com/karmada-io/karmada/pkg/generated/informers/externalversions"
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"github.com/karmada-io/karmada/pkg/util"
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"github.com/karmada-io/karmada/pkg/util/helper"
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)
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func buildBinding(name, ns string, target, status []workv1alpha2.TargetCluster) (*workv1alpha2.ResourceBinding, error) {
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bindingStatus := workv1alpha2.ResourceBindingStatus{}
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for _, cluster := range status {
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statusMap := map[string]interface{}{
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util.ReadyReplicasField: cluster.Replicas,
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}
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raw, err := helper.BuildStatusRawExtension(statusMap)
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if err != nil {
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return nil, err
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}
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bindingStatus.AggregatedStatus = append(bindingStatus.AggregatedStatus, workv1alpha2.AggregatedStatusItem{
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ClusterName: cluster.Name,
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Status: raw,
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Applied: true,
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})
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}
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return &workv1alpha2.ResourceBinding{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Namespace: ns,
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},
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Spec: workv1alpha2.ResourceBindingSpec{
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Clusters: target,
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},
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Status: bindingStatus,
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}, nil
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}
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func TestDescheduler_worker(t *testing.T) {
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type args struct {
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target []workv1alpha2.TargetCluster
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status []workv1alpha2.TargetCluster
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unschedulable []workv1alpha2.TargetCluster
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name string
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namespace string
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}
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tests := []struct {
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name string
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args args
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wantResponse []workv1alpha2.TargetCluster
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wantErr bool
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}{
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{
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name: "1 cluster without unschedulable replicas",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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status: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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unschedulable: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 0,
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},
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},
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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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wantErr: false,
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},
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{
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name: "1 cluster with 1 unschedulable replicas",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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status: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 4,
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},
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},
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unschedulable: []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: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 4,
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},
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},
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wantErr: false,
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},
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{
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name: "1 cluster with all unschedulable replicas",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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status: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 0,
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},
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},
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unschedulable: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 0,
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},
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},
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wantErr: false,
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},
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{
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name: "1 cluster with 4 ready replicas and 2 unschedulable replicas",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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status: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 4,
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},
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},
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unschedulable: []workv1alpha2.TargetCluster{
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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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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 4,
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},
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},
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wantErr: false,
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},
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{
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name: "1 cluster with 0 ready replicas and 2 unschedulable replicas",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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status: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 0,
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},
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},
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unschedulable: []workv1alpha2.TargetCluster{
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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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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 3,
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},
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},
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wantErr: false,
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},
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{
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name: "1 cluster with 6 ready replicas and 2 unschedulable replicas",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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status: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 6,
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},
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},
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unschedulable: []workv1alpha2.TargetCluster{
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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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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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},
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wantErr: false,
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},
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{
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name: "2 cluster without unschedulable replicas",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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{
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Name: "member2",
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Replicas: 10,
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},
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},
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status: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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{
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Name: "member2",
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Replicas: 10,
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},
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},
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unschedulable: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 0,
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},
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{
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Name: "member2",
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Replicas: 0,
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},
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},
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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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{
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Name: "member2",
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Replicas: 10,
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},
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},
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wantErr: false,
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},
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{
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name: "2 cluster with 1 unschedulable replica",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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{
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Name: "member2",
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Replicas: 10,
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},
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},
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status: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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{
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Name: "member2",
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Replicas: 9,
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},
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},
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unschedulable: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 0,
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},
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{
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Name: "member2",
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Replicas: 1,
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},
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},
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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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{
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Name: "member2",
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Replicas: 9,
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},
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},
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wantErr: false,
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},
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{
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name: "2 cluster with unscheable replicas of every cluster",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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{
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Name: "member2",
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Replicas: 10,
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},
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},
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status: []workv1alpha2.TargetCluster{
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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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Name: "member2",
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Replicas: 3,
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},
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},
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unschedulable: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 3,
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},
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{
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Name: "member2",
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Replicas: 7,
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},
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},
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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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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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Name: "member2",
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Replicas: 3,
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},
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},
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wantErr: false,
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},
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{
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name: "2 cluster with 1 cluster status loss",
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args: args{
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target: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 5,
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},
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{
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Name: "member2",
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Replicas: 10,
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},
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},
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status: []workv1alpha2.TargetCluster{
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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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unschedulable: []workv1alpha2.TargetCluster{
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{
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Name: "member1",
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Replicas: 3,
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},
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{
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Name: "member2",
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Replicas: 7,
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},
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},
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name: "foo",
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namespace: "default",
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},
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wantResponse: []workv1alpha2.TargetCluster{
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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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Name: "member2",
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Replicas: 3,
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},
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},
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wantErr: 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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ctx, cancel := context.WithCancel(context.TODO())
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defer cancel()
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binding, err := buildBinding(tt.args.name, tt.args.namespace, tt.args.target, tt.args.status)
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if err != nil {
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t.Fatalf("build binding error: %v", err)
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}
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karmadaClient := fakekarmadaclient.NewSimpleClientset(binding)
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factory := informerfactory.NewSharedInformerFactory(karmadaClient, 0)
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desched := &Descheduler{
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KarmadaClient: karmadaClient,
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informerFactory: factory,
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bindingInformer: factory.Work().V1alpha2().ResourceBindings().Informer(),
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bindingLister: factory.Work().V1alpha2().ResourceBindings().Lister(),
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clusterInformer: factory.Cluster().V1alpha1().Clusters().Informer(),
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clusterLister: factory.Cluster().V1alpha1().Clusters().Lister(),
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schedulerEstimatorCache: estimatorclient.NewSchedulerEstimatorCache(),
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unschedulableThreshold: 5 * time.Minute,
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eventRecorder: record.NewFakeRecorder(1024),
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}
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schedulerEstimator := estimatorclient.NewSchedulerEstimator(desched.schedulerEstimatorCache, 5*time.Second)
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estimatorclient.RegisterSchedulerEstimator(schedulerEstimator)
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for _, c := range tt.args.unschedulable {
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cluster := c
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mockClient := &estimatorservice.MockEstimatorClient{}
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mockResultFn := func(
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_ context.Context,
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_ *pb.UnschedulableReplicasRequest,
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_ ...grpc.CallOption,
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) *pb.UnschedulableReplicasResponse {
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return &pb.UnschedulableReplicasResponse{
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UnschedulableReplicas: cluster.Replicas,
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}
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}
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mockClient.On(
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"GetUnschedulableReplicas",
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mock.MatchedBy(func(context.Context) bool { return true }),
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mock.MatchedBy(func(in *pb.UnschedulableReplicasRequest) bool { return in.Cluster == cluster.Name }),
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).Return(mockResultFn, nil)
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desched.schedulerEstimatorCache.AddCluster(cluster.Name, nil, mockClient)
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}
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desched.informerFactory.Start(ctx.Done())
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if !cache.WaitForCacheSync(ctx.Done(), desched.bindingInformer.HasSynced) {
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t.Fatalf("Failed to wait for cache sync")
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}
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key, err := cache.MetaNamespaceKeyFunc(binding)
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if err != nil {
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t.Fatalf("Failed to get key of binding: %v", err)
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}
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if err := desched.worker(key); (err != nil) != tt.wantErr {
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t.Errorf("worker() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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binding, err = desched.KarmadaClient.WorkV1alpha2().ResourceBindings(tt.args.namespace).Get(ctx, tt.args.name, metav1.GetOptions{})
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if err != nil {
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t.Errorf("Failed to get binding: %v", err)
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return
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}
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gotResponse := binding.Spec.Clusters
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if !reflect.DeepEqual(gotResponse, tt.wantResponse) {
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t.Errorf("descheduler worker() gotResponse = %v, want %v", gotResponse, tt.wantResponse)
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}
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})
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}
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}
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