mirror of
https://github.com/k3s-io/kubernetes.git
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444 lines
12 KiB
Go
444 lines
12 KiB
Go
/*
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Copyright 2018 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 cache
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import (
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"fmt"
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"reflect"
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"testing"
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"github.com/google/go-cmp/cmp"
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v1 "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/labels"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/kubernetes/pkg/scheduler/framework"
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st "k8s.io/kubernetes/pkg/scheduler/testing"
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)
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const mb int64 = 1024 * 1024
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func TestGetNodeImageStates(t *testing.T) {
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tests := []struct {
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node *v1.Node
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imageExistenceMap map[string]sets.String
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expected map[string]*framework.ImageStateSummary
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}{
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{
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{Name: "node-0"},
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Status: v1.NodeStatus{
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Images: []v1.ContainerImage{
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{
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Names: []string{
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"gcr.io/10:v1",
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},
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SizeBytes: int64(10 * mb),
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},
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{
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Names: []string{
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"gcr.io/200:v1",
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},
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SizeBytes: int64(200 * mb),
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},
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},
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},
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},
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imageExistenceMap: map[string]sets.String{
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"gcr.io/10:v1": sets.NewString("node-0", "node-1"),
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"gcr.io/200:v1": sets.NewString("node-0"),
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},
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expected: map[string]*framework.ImageStateSummary{
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"gcr.io/10:v1": {
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Size: int64(10 * mb),
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NumNodes: 2,
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},
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"gcr.io/200:v1": {
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Size: int64(200 * mb),
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NumNodes: 1,
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},
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},
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},
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{
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{Name: "node-0"},
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Status: v1.NodeStatus{},
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},
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imageExistenceMap: map[string]sets.String{
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"gcr.io/10:v1": sets.NewString("node-1"),
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"gcr.io/200:v1": sets.NewString(),
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},
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expected: map[string]*framework.ImageStateSummary{},
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},
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}
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for i, test := range tests {
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t.Run(fmt.Sprintf("case_%d", i), func(t *testing.T) {
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imageStates := getNodeImageStates(test.node, test.imageExistenceMap)
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if !reflect.DeepEqual(test.expected, imageStates) {
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t.Errorf("expected: %#v, got: %#v", test.expected, imageStates)
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}
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})
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}
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}
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func TestCreateImageExistenceMap(t *testing.T) {
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tests := []struct {
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nodes []*v1.Node
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expected map[string]sets.String
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}{
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{
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nodes: []*v1.Node{
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{
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ObjectMeta: metav1.ObjectMeta{Name: "node-0"},
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Status: v1.NodeStatus{
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Images: []v1.ContainerImage{
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{
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Names: []string{
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"gcr.io/10:v1",
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},
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SizeBytes: int64(10 * mb),
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},
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},
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{Name: "node-1"},
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Status: v1.NodeStatus{
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Images: []v1.ContainerImage{
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{
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Names: []string{
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"gcr.io/10:v1",
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},
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SizeBytes: int64(10 * mb),
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},
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{
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Names: []string{
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"gcr.io/200:v1",
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},
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SizeBytes: int64(200 * mb),
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},
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},
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},
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},
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},
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expected: map[string]sets.String{
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"gcr.io/10:v1": sets.NewString("node-0", "node-1"),
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"gcr.io/200:v1": sets.NewString("node-1"),
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},
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},
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{
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nodes: []*v1.Node{
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{
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ObjectMeta: metav1.ObjectMeta{Name: "node-0"},
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Status: v1.NodeStatus{},
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},
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{
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ObjectMeta: metav1.ObjectMeta{Name: "node-1"},
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Status: v1.NodeStatus{
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Images: []v1.ContainerImage{
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{
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Names: []string{
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"gcr.io/10:v1",
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},
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SizeBytes: int64(10 * mb),
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},
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{
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Names: []string{
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"gcr.io/200:v1",
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},
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SizeBytes: int64(200 * mb),
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},
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},
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},
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},
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},
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expected: map[string]sets.String{
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"gcr.io/10:v1": sets.NewString("node-1"),
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"gcr.io/200:v1": sets.NewString("node-1"),
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},
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},
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}
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for i, test := range tests {
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t.Run(fmt.Sprintf("case_%d", i), func(t *testing.T) {
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imageMap := createImageExistenceMap(test.nodes)
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if !reflect.DeepEqual(test.expected, imageMap) {
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t.Errorf("expected: %#v, got: %#v", test.expected, imageMap)
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}
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})
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}
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}
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func TestCreateUsedPVCSet(t *testing.T) {
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tests := []struct {
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name string
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pods []*v1.Pod
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expected sets.String
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}{
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{
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name: "empty pods list",
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pods: []*v1.Pod{},
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expected: sets.NewString(),
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},
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{
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name: "pods not scheduled",
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pods: []*v1.Pod{
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st.MakePod().Name("foo").Namespace("foo").Obj(),
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st.MakePod().Name("bar").Namespace("bar").Obj(),
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},
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expected: sets.NewString(),
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},
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{
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name: "scheduled pods that do not use any PVC",
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pods: []*v1.Pod{
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st.MakePod().Name("foo").Namespace("foo").Node("node-1").Obj(),
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st.MakePod().Name("bar").Namespace("bar").Node("node-2").Obj(),
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},
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expected: sets.NewString(),
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},
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{
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name: "scheduled pods that use PVC",
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pods: []*v1.Pod{
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st.MakePod().Name("foo").Namespace("foo").Node("node-1").PVC("pvc1").Obj(),
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st.MakePod().Name("bar").Namespace("bar").Node("node-2").PVC("pvc2").Obj(),
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},
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expected: sets.NewString("foo/pvc1", "bar/pvc2"),
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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usedPVCs := createUsedPVCSet(test.pods)
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if diff := cmp.Diff(test.expected, usedPVCs); diff != "" {
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t.Errorf("Unexpected usedPVCs (-want +got):\n%s", diff)
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}
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})
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}
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}
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func TestNewSnapshot(t *testing.T) {
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podWithAnnotations := st.MakePod().Name("foo").Namespace("ns").Node("node-1").Annotations(map[string]string{"custom": "annotation"}).Obj()
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podWithPort := st.MakePod().Name("foo").Namespace("foo").Node("node-0").ContainerPort([]v1.ContainerPort{{HostPort: 8080}}).Obj()
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podWithAntiAffitiny := st.MakePod().Name("baz").Namespace("ns").PodAntiAffinity("another", &metav1.LabelSelector{MatchLabels: map[string]string{"another": "label"}}, st.PodAntiAffinityWithRequiredReq).Node("node-0").Obj()
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podsWithAffitiny := []*v1.Pod{
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st.MakePod().Name("bar").Namespace("ns").PodAffinity("baz", &metav1.LabelSelector{MatchLabels: map[string]string{"baz": "qux"}}, st.PodAffinityWithRequiredReq).Node("node-2").Obj(),
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st.MakePod().Name("bar").Namespace("ns").PodAffinity("key", &metav1.LabelSelector{MatchLabels: map[string]string{"key": "value"}}, st.PodAffinityWithRequiredReq).Node("node-0").Obj(),
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}
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podsWithPVCs := []*v1.Pod{
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st.MakePod().Name("foo").Namespace("foo").Node("node-0").PVC("pvc0").Obj(),
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st.MakePod().Name("bar").Namespace("bar").Node("node-1").PVC("pvc1").Obj(),
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st.MakePod().Name("baz").Namespace("baz").Node("node-2").PVC("pvc2").Obj(),
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}
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testCases := []struct {
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name string
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pods []*v1.Pod
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nodes []*v1.Node
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expectedNodesInfos []*framework.NodeInfo
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expectedNumNodes int
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expectedPodsWithAffinity int
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expectedPodsWithAntiAffinity int
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expectedUsedPVCSet sets.String
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}{
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{
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name: "no pods no nodes",
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pods: nil,
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nodes: nil,
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},
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{
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name: "single pod single node",
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pods: []*v1.Pod{
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podWithPort,
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},
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "node-0"}},
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},
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expectedNodesInfos: []*framework.NodeInfo{
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{
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Pods: []*framework.PodInfo{
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{Pod: podWithPort},
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},
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},
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},
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expectedNumNodes: 1,
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},
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{
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name: "multiple nodes, pods with PVCs",
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pods: podsWithPVCs,
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "node-0"}},
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{ObjectMeta: metav1.ObjectMeta{Name: "node-1"}},
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{ObjectMeta: metav1.ObjectMeta{Name: "node-2"}},
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},
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expectedNodesInfos: []*framework.NodeInfo{
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{
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Pods: []*framework.PodInfo{
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{Pod: podsWithPVCs[0]},
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},
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},
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{
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Pods: []*framework.PodInfo{
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{Pod: podsWithPVCs[1]},
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},
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},
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{
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Pods: []*framework.PodInfo{
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{Pod: podsWithPVCs[2]},
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},
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},
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},
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expectedNumNodes: 3,
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expectedUsedPVCSet: sets.NewString("foo/pvc0", "bar/pvc1", "baz/pvc2"),
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},
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{
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name: "multiple nodes, pod with affinity",
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pods: []*v1.Pod{
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podWithAnnotations,
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podsWithAffitiny[0],
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},
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "node-0"}},
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{ObjectMeta: metav1.ObjectMeta{Name: "node-1"}},
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{ObjectMeta: metav1.ObjectMeta{Name: "node-2", Labels: map[string]string{"baz": "qux"}}},
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},
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expectedNodesInfos: []*framework.NodeInfo{
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{
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Pods: []*framework.PodInfo{},
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},
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{
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Pods: []*framework.PodInfo{
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{Pod: podWithAnnotations},
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},
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},
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{
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Pods: []*framework.PodInfo{
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{
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Pod: podsWithAffitiny[0],
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RequiredAffinityTerms: []framework.AffinityTerm{
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{
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Namespaces: sets.NewString("ns"),
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Selector: labels.SelectorFromSet(map[string]string{"baz": "qux"}),
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TopologyKey: "baz",
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NamespaceSelector: labels.Nothing(),
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},
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},
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},
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},
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},
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},
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expectedNumNodes: 3,
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expectedPodsWithAffinity: 1,
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},
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{
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name: "multiple nodes, pod with affinity, pod with anti-affinity",
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pods: []*v1.Pod{
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podsWithAffitiny[1],
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podWithAntiAffitiny,
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},
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nodes: []*v1.Node{
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{ObjectMeta: metav1.ObjectMeta{Name: "node-0", Labels: map[string]string{"key": "value"}}},
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{ObjectMeta: metav1.ObjectMeta{Name: "node-1", Labels: map[string]string{"another": "label"}}},
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},
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expectedNodesInfos: []*framework.NodeInfo{
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{
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Pods: []*framework.PodInfo{
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{
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Pod: podsWithAffitiny[1],
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RequiredAffinityTerms: []framework.AffinityTerm{
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{
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Namespaces: sets.NewString("ns"),
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Selector: labels.SelectorFromSet(map[string]string{"key": "value"}),
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TopologyKey: "key",
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NamespaceSelector: labels.Nothing(),
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},
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},
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},
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{
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Pod: podWithAntiAffitiny,
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RequiredAntiAffinityTerms: []framework.AffinityTerm{
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{
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Namespaces: sets.NewString("ns"),
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Selector: labels.SelectorFromSet(map[string]string{"another": "label"}),
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TopologyKey: "another",
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NamespaceSelector: labels.Nothing(),
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},
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},
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},
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},
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},
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{
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Pods: []*framework.PodInfo{},
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},
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},
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expectedNumNodes: 2,
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expectedPodsWithAffinity: 1,
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expectedPodsWithAntiAffinity: 1,
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},
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}
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for _, test := range testCases {
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t.Run(test.name, func(t *testing.T) {
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snapshot := NewSnapshot(test.pods, test.nodes)
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if test.expectedNumNodes != snapshot.NumNodes() {
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t.Errorf("unexpected number of nodes, want: %v, got: %v", test.expectedNumNodes, snapshot.NumNodes())
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}
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for i, node := range test.nodes {
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info, err := snapshot.Get(node.Name)
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if err != nil {
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t.Errorf("unexpected error but got %s", err)
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}
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if info == nil {
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t.Error("node infos should not be nil")
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}
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for j := range test.expectedNodesInfos[i].Pods {
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if diff := cmp.Diff(test.expectedNodesInfos[i].Pods[j], info.Pods[j]); diff != "" {
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t.Errorf("Unexpected PodInfo (-want +got):\n%s", diff)
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}
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}
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}
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affinityList, err := snapshot.HavePodsWithAffinityList()
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if err != nil {
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t.Errorf("unexpected error but got %s", err)
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}
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if test.expectedPodsWithAffinity != len(affinityList) {
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t.Errorf("unexpected affinityList number, want: %v, got: %v", test.expectedPodsWithAffinity, len(affinityList))
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}
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antiAffinityList, err := snapshot.HavePodsWithRequiredAntiAffinityList()
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if err != nil {
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t.Errorf("unexpected error but got %s", err)
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}
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if test.expectedPodsWithAntiAffinity != len(antiAffinityList) {
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t.Errorf("unexpected antiAffinityList number, want: %v, got: %v", test.expectedPodsWithAntiAffinity, len(antiAffinityList))
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}
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for key := range test.expectedUsedPVCSet {
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if !snapshot.IsPVCUsedByPods(key) {
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t.Errorf("unexpected IsPVCUsedByPods for %s, want: true, got: false", key)
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}
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}
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if diff := cmp.Diff(test.expectedUsedPVCSet, snapshot.usedPVCSet); diff != "" {
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t.Errorf("Unexpected usedPVCSet (-want +got):\n%s", diff)
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}
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})
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}
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}
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