| // 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 inject |
| |
| 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 ( |
| namespace string = "dubbo-system" |
| cmName string = "istio-sidecar-injector" |
| configKey string = "config" |
| valuesKey string = "values" |
| ) |
| |
| func makeConfigMap(resourceVersion string, data map[string]string) *v1.ConfigMap { |
| return &v1.ConfigMap{ |
| ObjectMeta: metav1.ObjectMeta{ |
| Namespace: namespace, |
| Name: cmName, |
| ResourceVersion: resourceVersion, |
| }, |
| Data: data, |
| } |
| } |
| |
| func TestNewConfigMapWatcher(t *testing.T) { |
| configYaml := "policy: enabled" |
| c, err := UnmarshalConfig([]byte(configYaml)) |
| if err != nil { |
| t.Fatal(err) |
| } |
| valuesConfig := "sidecarInjectorWebhook: {}" |
| |
| cm := makeConfigMap("1", map[string]string{ |
| configKey: configYaml, |
| valuesKey: valuesConfig, |
| }) |
| badCM := makeConfigMap("2", map[string]string{ |
| configKey: configYaml, |
| }) |
| badCM2 := makeConfigMap("3", map[string]string{ |
| valuesKey: valuesConfig, |
| }) |
| badCM3 := makeConfigMap("4", map[string]string{ |
| configKey: "bad yaml", |
| valuesKey: valuesConfig, |
| }) |
| |
| var mu sync.Mutex |
| var newConfig *Config |
| var newValues string |
| |
| client := kube.NewFakeClient() |
| w := NewConfigMapWatcher(client, namespace, cmName, configKey, valuesKey) |
| w.SetHandler(func(config *Config, values string) error { |
| mu.Lock() |
| defer mu.Unlock() |
| newConfig = config |
| newValues = values |
| return nil |
| }) |
| stop := make(chan struct{}) |
| go w.Run(stop) |
| controller := w.(*configMapWatcher).c |
| cache.WaitForCacheSync(stop, controller.HasSynced) |
| client.RunAndWait(stop) |
| |
| cms := client.Kube().CoreV1().ConfigMaps(namespace) |
| steps := []struct { |
| added *v1.ConfigMap |
| updated *v1.ConfigMap |
| deleted *v1.ConfigMap |
| }{ |
| {added: cm}, |
| |
| // Handle misconfiguration errors. |
| {updated: badCM}, |
| {updated: cm}, |
| {updated: badCM2}, |
| {updated: badCM}, |
| {updated: cm}, |
| {updated: badCM3}, |
| {updated: cm}, |
| |
| // Handle deletion. |
| {deleted: cm}, |
| {added: cm}, |
| } |
| |
| for i, step := range steps { |
| 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()) |
| } |
| |
| g.Eventually(func() *Config { |
| mu.Lock() |
| defer mu.Unlock() |
| return newConfig |
| }, time.Second).Should(Equal(&c)) |
| g.Eventually(func() string { |
| mu.Lock() |
| defer mu.Unlock() |
| return newValues |
| }, time.Second).Should(Equal(valuesConfig)) |
| }) |
| } |
| } |