/
crud.go
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/
crud.go
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/*
Copyright 2017 The Kubernetes 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 e2e
import (
"context"
"fmt"
"strings"
"time"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/util/wait"
kubeclientset "k8s.io/client-go/kubernetes"
"github.com/kubernetes-sigs/federation-v2/pkg/apis/core/typeconfig"
genericclient "github.com/kubernetes-sigs/federation-v2/pkg/client/generic"
"github.com/kubernetes-sigs/federation-v2/pkg/controller/util"
"github.com/kubernetes-sigs/federation-v2/pkg/kubefedctl/federate"
"github.com/kubernetes-sigs/federation-v2/test/common"
"github.com/kubernetes-sigs/federation-v2/test/e2e/framework"
. "github.com/onsi/ginkgo"
)
type testObjectsAccessor func(namespace string, clusterNames []string) (targetObject *unstructured.Unstructured, overrides []interface{}, err error)
var _ = Describe("Federated", func() {
f := framework.NewFederationFramework("federated-types")
tl := framework.NewE2ELogger()
typeConfigFixtures := common.TypeConfigFixturesOrDie(tl)
// TODO(marun) Ensure that deletion handling of federated
// resources is performed in the event of test failure before
// controllers are shutdown.
for key := range typeConfigFixtures {
typeConfigName := key
fixture := typeConfigFixtures[key]
Describe(fmt.Sprintf("%q", typeConfigName), func() {
It("should be created, read, updated and deleted successfully", func() {
typeConfig, testObjectsFunc := getCrudTestInput(f, tl, typeConfigName, fixture)
crudTester, targetObject, overrides := initCrudTest(f, tl, typeConfig, testObjectsFunc)
crudTester.CheckLifecycle(targetObject, overrides)
})
// Labeling behavior should not vary between types, so testing a
// single type is sufficient. Picking a namespaced type minimizes
// the impact of teardown failure.
if typeConfigName != "configmaps" {
return
}
It("should have the managed label removed if not managed", func() {
typeConfig, testObjectsFunc := getCrudTestInput(f, tl, typeConfigName, fixture)
crudTester, targetObject, _ := initCrudTest(f, tl, typeConfig, testObjectsFunc)
testClusters := crudTester.TestClusters()
By("Selecting a member cluster to create an unlabeled resource in")
clusterName := ""
for key := range testClusters {
clusterName = key
break
}
clusterConfig := testClusters[clusterName].Config
By("Waiting for the test namespace to be created in the selected cluster")
kubeClient := kubeclientset.NewForConfigOrDie(clusterConfig)
common.WaitForNamespaceOrDie(tl, kubeClient, clusterName, targetObject.GetNamespace(),
framework.PollInterval, framework.TestContext.SingleCallTimeout)
By("Creating a labeled resource in the selected cluster")
util.AddManagedLabel(targetObject)
labeledObj, err := common.CreateResource(clusterConfig, typeConfig.GetTarget(), targetObject)
if err != nil {
tl.Fatalf("Failed to create labeled resource in cluster %q: %v", clusterName, err)
}
clusterClient := genericclient.NewForConfigOrDie(clusterConfig)
defer func() {
err := clusterClient.Delete(context.TODO(), labeledObj, labeledObj.GetNamespace(), labeledObj.GetName())
if err != nil {
tl.Fatalf("Unexpected error: %v", err)
}
}()
By("Checking that the labeled resource is unlabeled by the sync controller")
err = wait.PollImmediate(framework.PollInterval, wait.ForeverTestTimeout, func() (bool, error) {
obj := &unstructured.Unstructured{}
obj.SetGroupVersionKind(labeledObj.GroupVersionKind())
err := clusterClient.Get(context.TODO(), obj, labeledObj.GetNamespace(), labeledObj.GetName())
if err != nil {
tl.Errorf("Error retrieving labeled resource: %v", err)
return false, nil
}
return !util.HasManagedLabel(obj), nil
})
if err != nil {
tl.Fatal("Timed out waiting for the managed label to be removed")
}
})
It("should not be deleted if unlabeled", func() {
typeConfig, testObjectsFunc := getCrudTestInput(f, tl, typeConfigName, fixture)
crudTester, targetObject, _ := initCrudTest(f, tl, typeConfig, testObjectsFunc)
testClusters := crudTester.TestClusters()
By("Selecting a member cluster to create an unlabeled resource in")
clusterName := ""
for key := range testClusters {
clusterName = key
break
}
clusterConfig := testClusters[clusterName].Config
By("Waiting for the test namespace to be created in the selected cluster")
kubeClient := kubeclientset.NewForConfigOrDie(clusterConfig)
common.WaitForNamespaceOrDie(tl, kubeClient, clusterName, targetObject.GetNamespace(),
framework.PollInterval, framework.TestContext.SingleCallTimeout)
By("Creating an unlabeled resource in the selected cluster")
unlabeledObj, err := common.CreateResource(clusterConfig, typeConfig.GetTarget(), targetObject)
if err != nil {
tl.Fatalf("Failed to create unlabeled resource in cluster %q: %v", clusterName, err)
}
clusterClient := genericclient.NewForConfigOrDie(clusterConfig)
defer func() {
err := clusterClient.Delete(context.TODO(), unlabeledObj, unlabeledObj.GetNamespace(), unlabeledObj.GetName())
if err != nil {
tl.Fatalf("Unexpected error: %v", err)
}
}()
By("Intitializing a federated resource with placement excluding all clusters")
fedObject, err := federate.FederatedResourceFromTargetResource(typeConfig, unlabeledObj)
if err != nil {
tl.Fatalf("Error generating federated resource: %v", err)
}
err = util.SetClusterNames(fedObject, []string{})
if err != nil {
tl.Fatalf("Error setting cluster names for federated resource: %v", err)
}
fedObject.SetGenerateName("")
By("Creating the federated resource")
createdObj, err := common.CreateResource(f.KubeConfig(), typeConfig.GetFederatedType(), fedObject)
if err != nil {
tl.Fatalf("Error creating federated resource: %v", err)
}
hostClient := genericclient.NewForConfigOrDie(f.KubeConfig())
defer func() {
err := hostClient.Delete(context.TODO(), createdObj, createdObj.GetNamespace(), createdObj.GetName())
if err != nil {
tl.Fatalf("Unexpected error: %v", err)
}
}()
waitDuration := 10 * time.Second // Arbitrary amount of time to wait for deletion
By(fmt.Sprintf("Checking that the unlabeled resource is not deleted within %v", waitDuration))
_ = wait.PollImmediate(framework.PollInterval, waitDuration, func() (bool, error) {
obj := &unstructured.Unstructured{}
obj.SetGroupVersionKind(unlabeledObj.GroupVersionKind())
err := clusterClient.Get(context.TODO(), obj, unlabeledObj.GetNamespace(), unlabeledObj.GetName())
if apierrors.IsNotFound(err) {
tl.Fatalf("Unlabeled resource %s %q was deleted", typeConfig.GetTarget().Kind, util.NewQualifiedName(unlabeledObj))
}
if err != nil {
tl.Errorf("Error retrieving unlabeled resource: %v", err)
}
return false, nil
})
})
})
}
})
func getCrudTestInput(f framework.FederationFramework, tl common.TestLogger,
typeConfigName string, fixture *unstructured.Unstructured) (
typeconfig.Interface, testObjectsAccessor) {
// Lookup the type config from the api
client, err := genericclient.New(f.KubeConfig())
if err != nil {
tl.Fatalf("Error initializing dynamic client: %v", err)
}
typeConfig, err := common.GetTypeConfig(client, typeConfigName, f.FederationSystemNamespace())
if err != nil {
tl.Fatalf("Error retrieving federatedtypeconfig %q: %v", typeConfigName, err)
}
if framework.TestContext.LimitedScope && !typeConfig.GetNamespaced() {
framework.Skipf("Federation of cluster-scoped type %s is not supported by a namespaced control plane.", typeConfigName)
}
testObjectsFunc := func(namespace string, clusterNames []string) (*unstructured.Unstructured, []interface{}, error) {
targetObject, err := common.NewTestTargetObject(typeConfig, namespace, fixture)
if err != nil {
return nil, nil, err
}
if typeConfig.GetTarget().Kind == util.NamespaceKind {
// Namespace crud testing needs to have the same name as its namespace.
targetObject.SetName(namespace)
targetObject.SetNamespace(namespace)
}
overrides, err := common.OverridesFromFixture(clusterNames, fixture)
if err != nil {
return nil, nil, err
}
return targetObject, overrides, err
}
return typeConfig, testObjectsFunc
}
func initCrudTest(f framework.FederationFramework, tl common.TestLogger,
typeConfig typeconfig.Interface, testObjectsFunc testObjectsAccessor) (
*common.FederatedTypeCrudTester, *unstructured.Unstructured, []interface{}) {
// Initialize in-memory controllers if configuration requires
fixture := f.SetUpSyncControllerFixture(typeConfig)
f.RegisterFixture(fixture)
if typeConfig.GetNamespaced() {
// Propagation of namespaced types to member clusters depends on
// their containing namespace being propagated.
f.EnsureTestNamespacePropagation()
}
federatedKind := typeConfig.GetFederatedType().Kind
userAgent := fmt.Sprintf("test-%s-crud", strings.ToLower(federatedKind))
kubeConfig := f.KubeConfig()
targetAPIResource := typeConfig.GetTarget()
testClusters := f.ClusterDynamicClients(&targetAPIResource, userAgent)
crudTester, err := common.NewFederatedTypeCrudTester(tl, typeConfig, kubeConfig, testClusters, framework.PollInterval, framework.TestContext.SingleCallTimeout)
if err != nil {
tl.Fatalf("Error creating crudtester for %q: %v", federatedKind, err)
}
namespace := ""
// A test namespace is only required for namespaced resources or
// namespaces themselves.
if typeConfig.GetNamespaced() || typeConfig.GetTarget().Name == util.NamespaceName {
namespace = f.TestNamespaceName()
}
clusterNames := []string{}
for name := range testClusters {
clusterNames = append(clusterNames, name)
}
targetObject, overrides, err := testObjectsFunc(namespace, clusterNames)
if err != nil {
tl.Fatalf("Error creating test objects: %v", err)
}
return crudTester, targetObject, overrides
}