mirror of
https://github.com/kubesphere/kubekey.git
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309 lines
8.2 KiB
Go
309 lines
8.2 KiB
Go
/*
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Copyright 2019 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 locking
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import (
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"context"
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"errors"
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"fmt"
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"testing"
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. "github.com/onsi/gomega"
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corev1 "k8s.io/api/core/v1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/types"
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clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1"
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ctrl "sigs.k8s.io/controller-runtime"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/client/fake"
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)
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const (
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clusterName = "test-cluster"
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clusterNamespace = "test-namespace"
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)
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var (
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ctx = ctrl.SetupSignalHandler()
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)
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func TestControlPlaneInitMutex_Lock(t *testing.T) {
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g := NewWithT(t)
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scheme := runtime.NewScheme()
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g.Expect(clusterv1.AddToScheme(scheme)).To(Succeed())
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g.Expect(corev1.AddToScheme(scheme)).To(Succeed())
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uid := types.UID("test-uid")
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tests := []struct {
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name string
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client client.Client
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shouldAcquire bool
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}{
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{
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name: "should successfully acquire lock if the config cannot be found",
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client: &fakeClient{
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Client: fake.NewClientBuilder().WithScheme(scheme).Build(),
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getError: apierrors.NewNotFound(schema.GroupResource{Group: "", Resource: "configmaps"}, fmt.Sprintf("%s-controlplane", uid)),
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},
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shouldAcquire: true,
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},
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{
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name: "should not acquire lock if already exits",
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client: &fakeClient{
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Client: fake.NewClientBuilder().WithScheme(scheme).WithObjects(&corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Name: configMapName(clusterName),
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Namespace: clusterNamespace,
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},
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}).Build(),
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},
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shouldAcquire: false,
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},
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{
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name: "should not acquire lock if cannot create config map",
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client: &fakeClient{
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Client: fake.NewClientBuilder().WithScheme(scheme).Build(),
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getError: apierrors.NewNotFound(schema.GroupResource{Group: "", Resource: "configmaps"}, configMapName(clusterName)),
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createError: errors.New("create error"),
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},
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shouldAcquire: false,
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},
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{
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name: "should not acquire lock if config map already exists while creating",
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client: &fakeClient{
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Client: fake.NewClientBuilder().WithScheme(scheme).Build(),
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getError: apierrors.NewNotFound(schema.GroupResource{Group: "", Resource: "configmaps"}, fmt.Sprintf("%s-controlplane", uid)),
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createError: apierrors.NewAlreadyExists(schema.GroupResource{Group: "", Resource: "configmaps"}, fmt.Sprintf("%s-controlplane", uid)),
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},
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shouldAcquire: false,
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},
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}
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for _, tc := range tests {
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tc := tc
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t.Run(tc.name, func(t *testing.T) {
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gs := NewWithT(t)
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l := &ControlPlaneInitMutex{
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client: tc.client,
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}
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cluster := &clusterv1.Cluster{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: clusterNamespace,
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Name: clusterName,
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UID: uid,
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},
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}
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machine := &clusterv1.Machine{
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ObjectMeta: metav1.ObjectMeta{
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Name: fmt.Sprintf("machine-%s", cluster.Name),
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},
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}
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gs.Expect(l.Lock(ctx, cluster, machine)).To(Equal(tc.shouldAcquire))
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})
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}
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}
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func TestControlPlaneInitMutex_LockWithMachineDeletion(t *testing.T) {
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g := NewWithT(t)
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scheme := runtime.NewScheme()
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g.Expect(clusterv1.AddToScheme(scheme)).To(Succeed())
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g.Expect(corev1.AddToScheme(scheme)).To(Succeed())
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newMachineName := "new-machine"
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tests := []struct {
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name string
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client client.Client
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expectedMachineName string
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}{
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{
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name: "should not give the lock to new machine if the machine that created it does exist",
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client: &fakeClient{
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Client: fake.NewClientBuilder().WithScheme(scheme).WithObjects(
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&corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Name: configMapName(clusterName),
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Namespace: clusterNamespace},
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Data: map[string]string{
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"lock-information": "{\"machineName\":\"existent-machine\"}",
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}},
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&clusterv1.Machine{
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ObjectMeta: metav1.ObjectMeta{
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Name: "existent-machine",
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Namespace: clusterNamespace,
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},
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},
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).Build(),
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},
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expectedMachineName: "existent-machine",
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},
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{
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name: "should give the lock to new machine if the machine that created it does not exist",
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client: &fakeClient{
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Client: fake.NewClientBuilder().WithScheme(scheme).WithObjects(
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&corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Name: configMapName(clusterName),
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Namespace: clusterNamespace},
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Data: map[string]string{
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"lock-information": "{\"machineName\":\"non-existent-machine\"}",
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}},
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).Build(),
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},
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expectedMachineName: newMachineName,
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},
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}
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for _, tc := range tests {
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t.Run(tc.name, func(t *testing.T) {
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l := &ControlPlaneInitMutex{
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client: tc.client,
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}
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cluster := &clusterv1.Cluster{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: clusterNamespace,
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Name: clusterName,
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},
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}
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machine := &clusterv1.Machine{
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ObjectMeta: metav1.ObjectMeta{
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Name: newMachineName,
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},
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}
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g.Eventually(func(g Gomega) error {
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l.Lock(ctx, cluster, machine)
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cm := &corev1.ConfigMap{}
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g.Expect(tc.client.Get(ctx, client.ObjectKey{
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Name: configMapName(clusterName),
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Namespace: cluster.Namespace,
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}, cm)).To(Succeed())
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info, err := semaphore{cm}.information()
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g.Expect(err).To(BeNil())
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g.Expect(info.MachineName).To(Equal(tc.expectedMachineName))
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return nil
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}, "20s").Should(Succeed())
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})
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}
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}
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func TestControlPlaneInitMutex_UnLock(t *testing.T) {
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uid := types.UID("test-uid")
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configMap := &corev1.ConfigMap{
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ObjectMeta: metav1.ObjectMeta{
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Name: configMapName(clusterName),
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Namespace: clusterNamespace,
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},
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}
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tests := []struct {
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name string
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client client.Client
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shouldRelease bool
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}{
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{
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name: "should release lock by deleting config map",
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client: &fakeClient{
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Client: fake.NewClientBuilder().Build(),
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},
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shouldRelease: true,
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},
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{
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name: "should not release lock if cannot delete config map",
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client: &fakeClient{
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Client: fake.NewClientBuilder().WithObjects(configMap).Build(),
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deleteError: errors.New("delete error"),
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},
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shouldRelease: false,
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},
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{
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name: "should release lock if config map does not exist",
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client: &fakeClient{
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Client: fake.NewClientBuilder().Build(),
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getError: apierrors.NewNotFound(schema.GroupResource{Group: "", Resource: "configmaps"}, fmt.Sprintf("%s-controlplane", uid)),
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},
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shouldRelease: true,
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},
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{
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name: "should not release lock if error while getting config map",
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client: &fakeClient{
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Client: fake.NewClientBuilder().Build(),
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getError: errors.New("get error"),
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},
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shouldRelease: false,
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},
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}
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for _, tc := range tests {
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tc := tc
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t.Run(tc.name, func(t *testing.T) {
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gs := NewWithT(t)
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l := &ControlPlaneInitMutex{
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client: tc.client,
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}
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cluster := &clusterv1.Cluster{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: clusterNamespace,
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Name: clusterName,
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UID: uid,
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},
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}
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gs.Expect(l.Unlock(ctx, cluster)).To(Equal(tc.shouldRelease))
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})
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}
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}
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type fakeClient struct {
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client.Client
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getError error
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createError error
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deleteError error
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}
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func (fc *fakeClient) Get(ctx context.Context, key client.ObjectKey, obj client.Object) error {
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if fc.getError != nil {
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return fc.getError
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}
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return fc.Client.Get(ctx, key, obj)
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}
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func (fc *fakeClient) Create(ctx context.Context, obj client.Object, opts ...client.CreateOption) error {
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if fc.createError != nil {
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return fc.createError
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}
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return fc.Client.Create(ctx, obj, opts...)
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}
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func (fc *fakeClient) Delete(ctx context.Context, obj client.Object, opts ...client.DeleteOption) error {
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if fc.deleteError != nil {
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return fc.deleteError
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}
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return fc.Client.Delete(ctx, obj, opts...)
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}
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