Merge pull request #32810 from madhusudancs/fed-svc-lb-cleanup

Automatic merge from submit-queue

Implement cleanup methods to cleanup underlying cluster resources in federated service tests.

cc @kubernetes/sig-cluster-federation @colhom

test/e2e/federated-service.go

@@ -65,6 +65,11 @@ var _ = framework.KubeDescribe("[Feature:Federation]", func() {
 		})
 
 		Describe("Service creation", func() {
+			var (
+				service *v1.Service
+				nsName  string
+			)
+
 			BeforeEach(func() {
 				framework.SkipUnlessFederated(f.Client)
 				// Placeholder
@@ -72,15 +77,22 @@ var _ = framework.KubeDescribe("[Feature:Federation]", func() {
 
 			AfterEach(func() {
 				framework.SkipUnlessFederated(f.Client)
-				// Placeholder
+
+				if service != nil {
+					By(fmt.Sprintf("Deleting service shards and their provider resources in underlying clusters for service %q in namespace %q", service.Name, nsName))
+					cleanupServiceShardsAndProviderResources(nsName, service, clusters)
+					service = nil
+					nsName = ""
+				}
 			})
 
 			It("should succeed", func() {
 				framework.SkipUnlessFederated(f.Client)
 
-				nsName := f.FederationNamespace.Name
+				nsName = f.FederationNamespace.Name
-				service := createServiceOrFail(f.FederationClientset_1_4, nsName, FederatedServiceName)
+				service = createServiceOrFail(f.FederationClientset_1_4, nsName, FederatedServiceName)
 				By(fmt.Sprintf("Creation of service %q in namespace %q succeeded.  Deleting service.", service.Name, nsName))
+
 				// Cleanup
 				err := f.FederationClientset_1_4.Services(nsName).Delete(service.Name, &api.DeleteOptions{})
 				framework.ExpectNoError(err, "Error deleting service %q in namespace %q", service.Name, service.Namespace)
@@ -90,8 +102,8 @@ var _ = framework.KubeDescribe("[Feature:Federation]", func() {
 			It("should create matching services in underlying clusters", func() {
 				framework.SkipUnlessFederated(f.Client)
 
-				nsName := f.FederationNamespace.Name
+				nsName = f.FederationNamespace.Name
-				service := createServiceOrFail(f.FederationClientset_1_4, nsName, FederatedServiceName)
+				service = createServiceOrFail(f.FederationClientset_1_4, nsName, FederatedServiceName)
 				defer func() { // Cleanup
 					By(fmt.Sprintf("Deleting service %q in namespace %q", service.Name, nsName))
 					err := f.FederationClientset_1_4.Services(nsName).Delete(service.Name, &api.DeleteOptions{})
@@ -124,6 +136,10 @@ var _ = framework.KubeDescribe("[Feature:Federation]", func() {
 
 				if service != nil {
 					deleteServiceOrFail(f.FederationClientset_1_4, nsName, service.Name)
+
+					By(fmt.Sprintf("Deleting service shards and their provider resources in underlying clusters for service %q in namespace %q", service.Name, nsName))
+					cleanupServiceShardsAndProviderResources(nsName, service, clusters)
+
 					service = nil
 				} else {
 					By("No service to delete.  Service is nil")

test/e2e/federation-util.go

@@ -183,7 +183,6 @@ func unregisterClusters(clusters map[string]*cluster, f *framework.Framework) {
 
 // can not be moved to util, as By and Expect must be put in Ginkgo test unit
 func registerClusters(clusters map[string]*cluster, userAgentName, federationName string, f *framework.Framework) string {
-
 	contexts := f.GetUnderlyingFederatedContexts()
 
 	for _, context := range contexts {
@@ -289,6 +288,63 @@ func deleteServiceOrFail(clientset *federation_release_1_4.Clientset, namespace
 	framework.ExpectNoError(err, "Error deleting service %q from namespace %q", serviceName, namespace)
 }
 
+func cleanupServiceShardsAndProviderResources(namespace string, service *v1.Service, clusters map[string]*cluster) {
+	framework.Logf("Deleting service %q in %d clusters", service.Name, len(clusters))
+	for name, c := range clusters {
+		err := cleanupServiceShard(c.Clientset, name, namespace, service, FederatedServiceTimeout)
+		if err != nil {
+			framework.Logf("Failed to delete service %q in namespace %q, in cluster %q: %v", service.Name, namespace, name, err)
+		}
+		err = cleanupServiceShardLoadBalancer(name, service, FederatedServiceTimeout)
+		if err != nil {
+			framework.Logf("Failed to delete cloud provider resources for service %q in namespace %q, in cluster %q", service.Name, namespace, name)
+		}
+	}
+}
+
+func cleanupServiceShard(clientset *release_1_3.Clientset, clusterName, namespace string, service *v1.Service, timeout time.Duration) error {
+	err := wait.PollImmediate(framework.Poll, timeout, func() (bool, error) {
+		err := clientset.Services(namespace).Delete(service.Name, &api.DeleteOptions{})
+		if err != nil && !errors.IsNotFound(err) {
+			// Deletion failed with an error, try again.
+			framework.Logf("Failed to delete service %q in namespace %q, in cluster %q", service.Name, namespace, clusterName)
+			return false, nil
+		}
+		By(fmt.Sprintf("Service %q in namespace %q in cluster %q deleted", service.Name, namespace, clusterName))
+		return true, nil
+	})
+	return err
+}
+
+func cleanupServiceShardLoadBalancer(clusterName string, service *v1.Service, timeout time.Duration) error {
+	provider := framework.TestContext.CloudConfig.Provider
+	if provider == nil {
+		return fmt.Errorf("cloud provider undefined")
+	}
+
+	internalSvc := &api.Service{}
+	err := api.Scheme.Convert(service, internalSvc, nil)
+	if err != nil {
+		return fmt.Errorf("failed to convert versioned service object to internal type: %v", err)
+	}
+
+	err = wait.PollImmediate(framework.Poll, timeout, func() (bool, error) {
+		lbi, supported := provider.LoadBalancer()
+		if !supported {
+			return false, fmt.Errorf("%q doesn't support load balancers", provider.ProviderName())
+		}
+		err := lbi.EnsureLoadBalancerDeleted(clusterName, internalSvc)
+		if err != nil {
+			// Deletion failed with an error, try again.
+			framework.Logf("Failed to delete cloud provider resources for service %q in namespace %q, in cluster %q", service.Name, service.Namespace, clusterName)
+			return false, nil
+		}
+		By(fmt.Sprintf("Cloud provider resources for Service %q in namespace %q in cluster %q deleted", service.Name, service.Namespace, clusterName))
+		return true, nil
+	})
+	return err
+}
+
 func podExitCodeDetector(f *framework.Framework, name, namespace string, code int32) func() error {
 	// If we ever get any container logs, stash them here.
 	logs := ""