| // Copyright Istio Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package configmapwatcher |
| |
| import ( |
| "context" |
| "fmt" |
| "sync" |
| "testing" |
| "time" |
| ) |
| |
| import ( |
| . "github.com/onsi/gomega" |
| v1 "k8s.io/api/core/v1" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/client-go/tools/cache" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/kube" |
| ) |
| |
| const ( |
| configMapNamespace string = "dubbo-system" |
| configMapName string = "watched" |
| ) |
| |
| func makeConfigMap(name, resourceVersion string) *v1.ConfigMap { |
| return &v1.ConfigMap{ |
| ObjectMeta: metav1.ObjectMeta{ |
| Namespace: configMapNamespace, |
| Name: name, |
| ResourceVersion: resourceVersion, |
| }, |
| Data: map[string]string{ |
| "mesh": "trustDomain: cluster.local", |
| }, |
| } |
| } |
| |
| var ( |
| mu sync.Mutex |
| called bool |
| newCM *v1.ConfigMap |
| ) |
| |
| func callback(cm *v1.ConfigMap) { |
| mu.Lock() |
| defer mu.Unlock() |
| called = true |
| newCM = cm |
| } |
| |
| func getCalled() bool { |
| mu.Lock() |
| defer mu.Unlock() |
| return called |
| } |
| |
| func getCM() *v1.ConfigMap { |
| mu.Lock() |
| defer mu.Unlock() |
| return newCM |
| } |
| |
| func resetCalled() { |
| called = false |
| newCM = nil |
| } |
| |
| func Test_ConfigMapWatcher(t *testing.T) { |
| client := kube.NewFakeClient() |
| cm := makeConfigMap(configMapName, "1") |
| cm1 := makeConfigMap(configMapName, "2") |
| cm2 := makeConfigMap("not-watched", "1") |
| steps := []struct { |
| added *v1.ConfigMap |
| updated *v1.ConfigMap |
| deleted *v1.ConfigMap |
| expectCalled bool |
| expectCM *v1.ConfigMap |
| }{ |
| {added: cm2}, |
| {added: cm, expectCalled: true, expectCM: cm}, |
| {updated: cm}, |
| {updated: cm1, expectCalled: true, expectCM: cm1}, |
| {deleted: cm1, expectCalled: true}, |
| {deleted: cm2}, |
| } |
| |
| stop := make(chan struct{}) |
| c := NewController(client, configMapNamespace, configMapName, callback) |
| go c.Run(stop) |
| cache.WaitForCacheSync(stop, c.HasSynced) |
| |
| cms := client.Kube().CoreV1().ConfigMaps(configMapNamespace) |
| for i, step := range steps { |
| resetCalled() |
| |
| t.Run(fmt.Sprintf("[%v]", i), func(t *testing.T) { |
| g := NewWithT(t) |
| |
| switch { |
| case step.added != nil: |
| _, err := cms.Create(context.TODO(), step.added, metav1.CreateOptions{}) |
| g.Expect(err).Should(BeNil()) |
| case step.updated != nil: |
| _, err := cms.Update(context.TODO(), step.updated, metav1.UpdateOptions{}) |
| g.Expect(err).Should(BeNil()) |
| case step.deleted != nil: |
| g.Expect(cms.Delete(context.TODO(), step.deleted.Name, metav1.DeleteOptions{})). |
| Should(Succeed()) |
| } |
| |
| if step.expectCalled { |
| g.Eventually(getCalled, time.Second).Should(Equal(true)) |
| g.Eventually(getCM, time.Second).Should(Equal(newCM)) |
| } else { |
| g.Consistently(getCalled).Should(Equal(false)) |
| } |
| }) |
| } |
| } |