307 lines
13 KiB
Go
307 lines
13 KiB
Go
/*
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Copyright 2016 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 e2e_federation
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import (
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"fmt"
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"os"
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"strings"
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"time"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/wait"
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fedclientset "k8s.io/kubernetes/federation/client/clientset_generated/federation_clientset"
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fedutil "k8s.io/kubernetes/federation/pkg/federation-controller/util"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
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"k8s.io/kubernetes/test/e2e/framework"
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fedframework "k8s.io/kubernetes/test/e2e_federation/framework"
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"reflect"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"k8s.io/apimachinery/pkg/api/errors"
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)
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const (
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FederationReplicaSetName = "federation-replicaset"
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FederatedReplicaSetTimeout = 120 * time.Second
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)
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// Create/delete replicaset api objects
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var _ = framework.KubeDescribe("Federation replicasets [Feature:Federation]", func() {
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f := fedframework.NewDefaultFederatedFramework("federation-replicaset")
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Describe("ReplicaSet objects", func() {
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AfterEach(func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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// Delete all replicasets.
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nsName := f.FederationNamespace.Name
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deleteAllReplicaSetsOrFail(f.FederationClientset, nsName)
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})
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It("should be created and deleted successfully", func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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nsName := f.FederationNamespace.Name
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replicaset := createReplicaSetOrFail(f.FederationClientset, nsName)
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By(fmt.Sprintf("Creation of replicaset %q in namespace %q succeeded. Deleting replicaset.", replicaset.Name, nsName))
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// Cleanup
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err := f.FederationClientset.Extensions().ReplicaSets(nsName).Delete(replicaset.Name, &metav1.DeleteOptions{})
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framework.ExpectNoError(err, "Error deleting replicaset %q in namespace %q", replicaset.Name, replicaset.Namespace)
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By(fmt.Sprintf("Deletion of replicaset %q in namespace %q succeeded.", replicaset.Name, nsName))
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})
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})
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// e2e cases for federated replicaset controller
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Describe("Federated ReplicaSet", func() {
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var (
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clusters map[string]*cluster
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federationName string
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)
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BeforeEach(func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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if federationName = os.Getenv("FEDERATION_NAME"); federationName == "" {
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federationName = DefaultFederationName
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}
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clusters = map[string]*cluster{}
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registerClusters(clusters, UserAgentName, federationName, f)
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})
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AfterEach(func() {
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// Delete all replicasets.
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nsName := f.FederationNamespace.Name
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deleteAllReplicaSetsOrFail(f.FederationClientset, nsName)
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unregisterClusters(clusters, f)
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})
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It("should create and update matching replicasets in underling clusters", func() {
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nsName := f.FederationNamespace.Name
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rs := createReplicaSetOrFail(f.FederationClientset, nsName)
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defer func() {
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// cleanup. deletion of replicasets is not supported for underlying clusters
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By(fmt.Sprintf("Preparing replicaset %q/%q for deletion by setting replicas to zero", nsName, rs.Name))
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replicas := int32(0)
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rs.Spec.Replicas = &replicas
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f.FederationClientset.ReplicaSets(nsName).Update(rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters)
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f.FederationClientset.ReplicaSets(nsName).Delete(rs.Name, &metav1.DeleteOptions{})
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}()
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters)
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By(fmt.Sprintf("Successfuly created and synced replicaset %q/%q to clusters", nsName, rs.Name))
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updateReplicaSetOrFail(f.FederationClientset, nsName)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters)
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By(fmt.Sprintf("Successfuly updated and synced replicaset %q/%q to clusters", nsName, rs.Name))
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})
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It("should be deleted from underlying clusters when OrphanDependents is false", func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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nsName := f.FederationNamespace.Name
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orphanDependents := false
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verifyCascadingDeletionForReplicaSet(f.FederationClientset, clusters, &orphanDependents, nsName)
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By(fmt.Sprintf("Verified that replica sets were deleted from underlying clusters"))
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})
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It("should not be deleted from underlying clusters when OrphanDependents is true", func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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nsName := f.FederationNamespace.Name
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orphanDependents := true
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verifyCascadingDeletionForReplicaSet(f.FederationClientset, clusters, &orphanDependents, nsName)
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By(fmt.Sprintf("Verified that replica sets were not deleted from underlying clusters"))
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})
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It("should not be deleted from underlying clusters when OrphanDependents is nil", func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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nsName := f.FederationNamespace.Name
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verifyCascadingDeletionForReplicaSet(f.FederationClientset, clusters, nil, nsName)
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By(fmt.Sprintf("Verified that replica sets were not deleted from underlying clusters"))
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})
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})
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})
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// deleteAllReplicaSetsOrFail deletes all replicasets in the given namespace name.
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func deleteAllReplicaSetsOrFail(clientset *fedclientset.Clientset, nsName string) {
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replicasetList, err := clientset.Extensions().ReplicaSets(nsName).List(metav1.ListOptions{})
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Expect(err).NotTo(HaveOccurred())
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orphanDependents := false
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for _, replicaset := range replicasetList.Items {
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deleteReplicaSetOrFail(clientset, nsName, replicaset.Name, &orphanDependents)
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}
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}
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// verifyCascadingDeletionForReplicaSet verifies that replicaSets are deleted
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// from underlying clusters when orphan dependents is false and they are not
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// deleted when orphan dependents is true.
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func verifyCascadingDeletionForReplicaSet(clientset *fedclientset.Clientset, clusters map[string]*cluster, orphanDependents *bool, nsName string) {
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replicaSet := createReplicaSetOrFail(clientset, nsName)
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replicaSetName := replicaSet.Name
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// Check subclusters if the replicaSet was created there.
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By(fmt.Sprintf("Waiting for replica sets %s to be created in all underlying clusters", replicaSetName))
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err := wait.Poll(5*time.Second, 2*time.Minute, func() (bool, error) {
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for _, cluster := range clusters {
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_, err := cluster.Extensions().ReplicaSets(nsName).Get(replicaSetName, metav1.GetOptions{})
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if err != nil && errors.IsNotFound(err) {
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return false, nil
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}
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if err != nil {
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return false, err
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}
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}
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return true, nil
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})
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framework.ExpectNoError(err, "Not all replica sets created")
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By(fmt.Sprintf("Deleting replica set %s", replicaSetName))
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deleteReplicaSetOrFail(clientset, nsName, replicaSetName, orphanDependents)
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By(fmt.Sprintf("Verifying replica sets %s in underlying clusters", replicaSetName))
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errMessages := []string{}
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for clusterName, clusterClientset := range clusters {
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_, err := clusterClientset.Extensions().ReplicaSets(nsName).Get(replicaSetName, metav1.GetOptions{})
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if (orphanDependents == nil || *orphanDependents == true) && errors.IsNotFound(err) {
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errMessages = append(errMessages, fmt.Sprintf("unexpected NotFound error for replica set %s in cluster %s, expected replica set to exist", replicaSetName, clusterName))
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} else if (orphanDependents != nil && *orphanDependents == false) && (err == nil || !errors.IsNotFound(err)) {
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errMessages = append(errMessages, fmt.Sprintf("expected NotFound error for replica set %s in cluster %s, got error: %v", replicaSetName, clusterName, err))
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}
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}
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if len(errMessages) != 0 {
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framework.Failf("%s", strings.Join(errMessages, "; "))
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}
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}
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func waitForReplicaSetOrFail(c *fedclientset.Clientset, namespace string, replicaSetName string, clusters map[string]*cluster) {
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err := waitForReplicaSet(c, namespace, replicaSetName, clusters)
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framework.ExpectNoError(err, "Failed to verify replica set %q/%q, err: %v", namespace, replicaSetName, err)
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}
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func waitForReplicaSet(c *fedclientset.Clientset, namespace string, replicaSetName string, clusters map[string]*cluster) error {
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err := wait.Poll(10*time.Second, FederatedReplicaSetTimeout, func() (bool, error) {
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frs, err := c.ReplicaSets(namespace).Get(replicaSetName, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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specReplicas, statusReplicas := int32(0), int32(0)
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for _, cluster := range clusters {
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rs, err := cluster.ReplicaSets(namespace).Get(replicaSetName, metav1.GetOptions{})
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if err != nil && !errors.IsNotFound(err) {
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By(fmt.Sprintf("Failed getting replicaset: %q/%q/%q, err: %v", cluster.name, namespace, replicaSetName, err))
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return false, err
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}
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if err == nil {
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if !equivalentReplicaSet(frs, rs) {
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By(fmt.Sprintf("Replicaset meta or spec not match for cluster %q:\n federation: %v\n cluster: %v", cluster.name, frs, rs))
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return false, nil
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}
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specReplicas += *rs.Spec.Replicas
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statusReplicas += rs.Status.Replicas
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}
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}
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if statusReplicas == frs.Status.Replicas && specReplicas >= *frs.Spec.Replicas {
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return true, nil
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}
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By(fmt.Sprintf("Replicas not match, federation replicas: %v/%v, clusters replicas: %v/%v\n", *frs.Spec.Replicas, frs.Status.Replicas, specReplicas, statusReplicas))
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return false, nil
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})
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return err
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}
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func equivalentReplicaSet(fedReplicaSet, localReplicaSet *v1beta1.ReplicaSet) bool {
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localReplicaSetSpec := localReplicaSet.Spec
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localReplicaSetSpec.Replicas = fedReplicaSet.Spec.Replicas
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return fedutil.ObjectMetaEquivalent(fedReplicaSet.ObjectMeta, localReplicaSet.ObjectMeta) &&
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reflect.DeepEqual(fedReplicaSet.Spec, localReplicaSetSpec)
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}
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func createReplicaSetOrFail(clientset *fedclientset.Clientset, namespace string) *v1beta1.ReplicaSet {
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if clientset == nil || len(namespace) == 0 {
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Fail(fmt.Sprintf("Internal error: invalid parameters passed to createReplicaSetOrFail: clientset: %v, namespace: %v", clientset, namespace))
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}
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By(fmt.Sprintf("Creating federation replicaset %q in namespace %q", FederationReplicaSetName, namespace))
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replicaset := newReplicaSet(namespace, FederationReplicaSetName, 5)
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_, err := clientset.Extensions().ReplicaSets(namespace).Create(replicaset)
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framework.ExpectNoError(err, "Creating replicaset %q in namespace %q", replicaset.Name, namespace)
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By(fmt.Sprintf("Successfully created federation replicaset %q in namespace %q", FederationReplicaSetName, namespace))
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return replicaset
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}
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func deleteReplicaSetOrFail(clientset *fedclientset.Clientset, nsName string, replicaSetName string, orphanDependents *bool) {
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By(fmt.Sprintf("Deleting replica set %q in namespace %q", replicaSetName, nsName))
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err := clientset.Extensions().ReplicaSets(nsName).Delete(replicaSetName, &metav1.DeleteOptions{OrphanDependents: orphanDependents})
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framework.ExpectNoError(err, "Error deleting replica set %q in namespace %q", replicaSetName, nsName)
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// Wait for the replicaSet to be deleted.
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err = wait.Poll(5*time.Second, wait.ForeverTestTimeout, func() (bool, error) {
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_, err := clientset.Extensions().ReplicaSets(nsName).Get(replicaSetName, metav1.GetOptions{})
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if err != nil && errors.IsNotFound(err) {
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return true, nil
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}
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return false, err
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})
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if err != nil {
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framework.Failf("Error in deleting replica set %s: %v", replicaSetName, err)
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}
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}
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func updateReplicaSetOrFail(clientset *fedclientset.Clientset, namespace string) *v1beta1.ReplicaSet {
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if clientset == nil || len(namespace) == 0 {
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Fail(fmt.Sprintf("Internal error: invalid parameters passed to updateReplicaSetOrFail: clientset: %v, namespace: %v", clientset, namespace))
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}
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By(fmt.Sprintf("Updating federation replicaset %q in namespace %q", FederationReplicaSetName, namespace))
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replicaset := newReplicaSet(namespace, FederationReplicaSetName, 15)
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newRs, err := clientset.ReplicaSets(namespace).Update(replicaset)
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framework.ExpectNoError(err, "Updating replicaset %q in namespace %q", replicaset.Name, namespace)
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By(fmt.Sprintf("Successfully updated federation replicaset %q in namespace %q", FederationReplicaSetName, namespace))
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return newRs
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}
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func newReplicaSet(namespace string, name string, replicas int32) *v1beta1.ReplicaSet {
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return &v1beta1.ReplicaSet{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Namespace: namespace,
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},
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Spec: v1beta1.ReplicaSetSpec{
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Replicas: &replicas,
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Selector: &metav1.LabelSelector{
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MatchLabels: map[string]string{"name": "myrs"},
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},
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Template: v1.PodTemplateSpec{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{"name": "myrs"},
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "nginx",
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Image: "nginx",
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},
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},
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},
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},
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},
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}
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}
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