213 lines
7.6 KiB
Go
213 lines
7.6 KiB
Go
/*
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Copyright 2024 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 deinit
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import (
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"context"
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"fmt"
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"testing"
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appsv1 "k8s.io/api/apps/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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clientset "k8s.io/client-go/kubernetes"
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fakeclientset "k8s.io/client-go/kubernetes/fake"
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"github.com/karmada-io/karmada/pkg/util/names"
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)
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type resource struct {
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name string
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resourceType string
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}
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func TestDeInitKarmada(t *testing.T) {
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labels := map[string]string{karmadaBootstrappingLabelKey: "app-defaults"}
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tests := []struct {
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name string
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deInitOpts *CommandDeInitOption
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resources []resource
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prep func(client clientset.Interface, namespace string, resources []resource) error
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verify func(client clientset.Interface, namespace string, resources []resource) error
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wantErr bool
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}{
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{
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name: "DeInitKarmada_DeInitKarmadaAfterItIsInitialized_KarmadaDeinit",
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deInitOpts: &CommandDeInitOption{
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KubeClientSet: fakeclientset.NewClientset(),
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Namespace: names.NamespaceKarmadaSystem,
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PurgeNamespace: true,
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Force: true,
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},
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resources: []resource{
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{"test-deployment-1", "deployment"},
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{"test-deployment-2", "deployment"},
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{"test-statefulset-1", "statefulset"},
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{"test-statefulset-2", "statefulset"},
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{"test-service-1", "service"},
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{"test-service-2", "service"},
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{"test-secret-1", "secret"},
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{"test-secret-2", "secret"},
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{"test-node-1", "node"},
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{"test-node-2", "node"},
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},
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prep: func(client clientset.Interface, namespace string, resources []resource) error {
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ns := &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: namespace}}
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if ns, err := client.CoreV1().Namespaces().Create(context.TODO(), ns, metav1.CreateOptions{}); err != nil {
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return fmt.Errorf("failed to create karmada namespace %s, got error: %v", ns.GetName(), err)
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}
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for _, resource := range resources {
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if err := createResource(client, namespace, resource.name, labels, resource.resourceType); err != nil {
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return fmt.Errorf("failed to create %s %s in namespace %s, got error: %v", resource.resourceType, resource.name, namespace, err)
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}
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}
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return nil
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},
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verify: func(client clientset.Interface, namespace string, resources []resource) error {
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for _, resource := range resources {
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if err := verifyResource(client, namespace, resource.name, resource.resourceType); err != nil {
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return err
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}
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}
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if ns, err := client.CoreV1().Namespaces().Get(context.TODO(), namespace, metav1.GetOptions{}); err == nil {
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return fmt.Errorf("expected namespace %s to be deleted, but it still exists", ns.GetName())
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}
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return nil
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},
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wantErr: false,
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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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if err := test.prep(test.deInitOpts.KubeClientSet, test.deInitOpts.Namespace, test.resources); err != nil {
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t.Fatalf("failed to prep test environment, got: %v", err)
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}
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err := test.deInitOpts.Run()
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if err == nil && test.wantErr {
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t.Fatal("expected an error, but got none")
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}
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if err != nil && !test.wantErr {
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t.Errorf("unexpected error, got: %v", err)
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}
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if err := test.verify(test.deInitOpts.KubeClientSet, test.deInitOpts.Namespace, test.resources); err != nil {
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t.Errorf("failed to verify the deinit of Karmada, got error: %v", err)
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}
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})
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}
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}
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// createResource creates a Kubernetes resource of the specified type in the given namespace.
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// Supported resource types include "deployment", "statefulset", "service", "secret", and "node".
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// It sets the provided name and labels for the resource.
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// Returns an error if the resource creation fails or if the resource type is unsupported.
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func createResource(client clientset.Interface, namespace, name string, labels map[string]string, resourceType string) error {
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switch resourceType {
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case "deployment":
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resource := &appsv1.Deployment{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Labels: labels,
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},
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}
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_, err := client.AppsV1().Deployments(namespace).Create(context.TODO(), resource, metav1.CreateOptions{})
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return err
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case "statefulset":
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resource := &appsv1.StatefulSet{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Labels: labels,
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},
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}
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_, err := client.AppsV1().StatefulSets(namespace).Create(context.TODO(), resource, metav1.CreateOptions{})
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return err
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case "service":
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resource := &corev1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Labels: labels,
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},
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}
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_, err := client.CoreV1().Services(namespace).Create(context.TODO(), resource, metav1.CreateOptions{})
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return err
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case "secret":
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resource := &corev1.Secret{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Labels: labels,
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},
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}
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_, err := client.CoreV1().Secrets(namespace).Create(context.TODO(), resource, metav1.CreateOptions{})
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return err
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case "node":
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resource := &corev1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Labels: map[string]string{karmadaNodeLabel: ""},
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},
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}
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_, err := client.CoreV1().Nodes().Create(context.TODO(), resource, metav1.CreateOptions{})
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return err
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default:
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return fmt.Errorf("unsupported resource type: %s", resourceType)
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}
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}
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// getResource retrieves a Kubernetes resource of the specified type from the given namespace.
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// Supported resource types include "deployment", "statefulset", "service", "secret", and "node".
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// For "node" resources, checks if the expected label is removed and returns an error if not.
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// Returns an error if the resource retrieval fails or if the resource type is unsupported.
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func getResource(client clientset.Interface, namespace, name string, resourceType string) error {
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switch resourceType {
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case "deployment":
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_, err := client.AppsV1().Deployments(namespace).Get(context.TODO(), name, metav1.GetOptions{})
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return err
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case "statefulset":
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_, err := client.AppsV1().StatefulSets(namespace).Get(context.TODO(), name, metav1.GetOptions{})
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return err
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case "service":
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_, err := client.CoreV1().Services(namespace).Get(context.TODO(), name, metav1.GetOptions{})
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return err
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case "secret":
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_, err := client.CoreV1().Secrets(namespace).Get(context.TODO(), name, metav1.GetOptions{})
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return err
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case "node":
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node, err := client.CoreV1().Nodes().Get(context.TODO(), name, metav1.GetOptions{})
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if err != nil {
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return err
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}
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if _, ok := node.Labels[karmadaNodeLabel]; ok {
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return fmt.Errorf("expected node label %s to be removed from node %s", karmadaNodeLabel, name)
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}
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return nil
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default:
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return fmt.Errorf("unsupported resource type: %s", resourceType)
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}
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}
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// verifyResource ensures the specified Kubernetes resource is deleted, except for "node" resources,
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// where it checks for errors in retrieval. Returns an error if the resource still exists or verification fails.
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func verifyResource(client clientset.Interface, namespace, resourceName, resourceType string) error {
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err := getResource(client, namespace, resourceName, resourceType)
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if resourceType != "node" && err == nil {
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return fmt.Errorf("expected %s %s in namespace %s to be deleted, but it still exists", resourceType, resourceName, namespace)
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}
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if resourceType == "node" && err != nil {
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return err
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}
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return nil
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}
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