mirror of https://github.com/k3s-io/k3s
Implement first set of federated service e2e tests.
Note that these tests are untested and there is no guarantee that they work. The ongoing auth problems is blocking these e2es from being tested and upon @quinton-hoole's request I am submitting them now.pull/6/head
Madhusudan.C.S
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0d02f8c0f6
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c4dcb42078
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/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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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
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import (
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"time"
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"k8s.io/kubernetes/federation/apis/federation"
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"k8s.io/kubernetes/federation/client/clientset_generated/federation_internalclientset"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/client/clientset_generated/release_1_3"
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"k8s.io/kubernetes/pkg/client/restclient"
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"k8s.io/kubernetes/pkg/client/unversioned/clientcmd"
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clientcmdapi "k8s.io/kubernetes/pkg/client/unversioned/clientcmd/api"
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"k8s.io/kubernetes/pkg/util/intstr"
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"k8s.io/kubernetes/test/e2e/framework"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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const (
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UserAgentName = "federation-e2e-service-controller"
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// TODO(madhusudancs): Using the same values as defined in the federated
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// service controller. Replace it with the values from the e2e framework.
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KubeAPIQPS = 20.0
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KubeAPIBurst = 30
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FederatedServiceTimeout = 5 * time.Minute
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FederatedServiceName = "federated-service"
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FederatedServicePod = "federated-service-test-pod"
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// TODO: Only suppoprts IPv4 addresses. Also add a regexp for IPv6 addresses.
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FederatedIPAddrRegexp = `(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])`
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FederatedDNS1123Regexp = `([a-z0-9]([-a-z0-9]*[a-z0-9])?\.)*([a-z0-9]([-a-z0-9]*[a-z0-9])?)`
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)
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var _ = framework.KubeDescribe("Service [Feature:Federation]", func() {
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var clusterClientSets []*release_1_3.Clientset
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f := framework.NewDefaultFederatedFramework("service")
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BeforeEach(func() {
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contexts := f.GetUnderlyingFederatedContexts()
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for _, context := range contexts {
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framework.Logf("Creating cluster object: %s (%s)", context.Name, context.Cluster.Cluster.Server)
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cluster := federation.Cluster{
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ObjectMeta: api.ObjectMeta{
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Name: context.Name,
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},
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Spec: federation.ClusterSpec{
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ServerAddressByClientCIDRs: []federation.ServerAddressByClientCIDR{
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{
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ClientCIDR: "0.0.0.0/0",
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ServerAddress: context.Cluster.Cluster.Server,
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},
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},
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},
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}
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_, err := f.FederationClientset.Federation().Clusters().Create(&cluster)
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framework.ExpectNoError(err, "Creating cluster")
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}
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By("Obtaining a list of all the clusters")
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clusterList, err := f.FederationClientset.Federation().Clusters().List(api.ListOptions{})
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Expect(err).NotTo(HaveOccurred())
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framework.Logf("%d clusters found", len(clusterList.Items))
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for _, cluster := range clusterList.Items {
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framework.Logf("Creating a clientset for the cluster %s", cluster.Name)
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Expect(framework.TestContext.KubeConfig).ToNot(Equal(""), "KubeConfig must be specified to load clusters' client config")
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kubecfg, err := clientcmd.LoadFromFile(framework.TestContext.KubeConfig)
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framework.ExpectNoError(err, "error loading KubeConfig: %v", err)
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cfgOverride := &clientcmd.ConfigOverrides{
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ClusterInfo: clientcmdapi.Cluster{
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Server: cluster.Spec.ServerAddressByClientCIDRs[0].ServerAddress,
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},
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}
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ccfg := clientcmd.NewNonInteractiveClientConfig(*kubecfg, cluster.Name, cfgOverride, clientcmd.NewDefaultClientConfigLoadingRules())
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cfg, err := ccfg.ClientConfig()
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Expect(err).NotTo(HaveOccurred())
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cfg.QPS = KubeAPIQPS
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cfg.Burst = KubeAPIBurst
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clset := release_1_3.NewForConfigOrDie(restclient.AddUserAgent(cfg, UserAgentName))
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clusterClientSets = append(clusterClientSets, clset)
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}
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})
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It("should be able to discover a federated service", func() {
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framework.SkipUnlessFederated(f.Client)
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createService(f.FederationClientset, clusterClientSets, f.Namespace.Name)
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discoverService(f)
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})
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It("should be able to discover a non-local federated service", func() {
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framework.SkipUnlessFederated(f.Client)
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createService(f.FederationClientset, clusterClientSets, f.Namespace.Name)
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// Delete a federated service shard in the default e2e Kubernetes cluster.
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err := f.Clientset_1_3.Core().Services(f.Namespace.Name).Delete(FederatedServiceName, &api.DeleteOptions{})
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Expect(err).NotTo(HaveOccurred())
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waitForFederatedServiceShard(f.Clientset_1_3, f.Namespace.Name, nil, 0)
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discoverService(f)
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})
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})
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func waitForFederatedServiceShard(cs *release_1_3.Clientset, namespace string, service *api.Service, numSvcs int) {
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By("Fetching a federated service shard")
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var clSvcList *v1.ServiceList
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for t := time.Now(); time.Since(t) < FederatedServiceTimeout; time.Sleep(framework.Poll) {
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var err error
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clSvcList, err = cs.Core().Services(namespace).List(api.ListOptions{})
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Expect(err).NotTo(HaveOccurred())
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n := len(clSvcList.Items)
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if n == numSvcs {
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break
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}
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framework.Logf("%d services found, trying again in %s", n, framework.Poll)
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}
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Expect(len(clSvcList.Items)).To(Equal(numSvcs))
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if numSvcs > 0 {
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// Renaming for clarity/readability
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clSvc := clSvcList.Items[0]
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Expect(clSvc.Name).To(Equal(service.Name))
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Expect(clSvc.Spec).To(Equal(service.Spec))
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}
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}
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func createService(fcs *federation_internalclientset.Clientset, clusterClientSets []*release_1_3.Clientset, ns string) {
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By("Creating a federated service")
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labels := map[string]string{
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"foo": "bar",
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}
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svc1port := "svc1"
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svc2port := "svc2"
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service := &api.Service{
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ObjectMeta: api.ObjectMeta{
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Name: FederatedServiceName,
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},
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Spec: api.ServiceSpec{
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Selector: labels,
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Ports: []api.ServicePort{
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{
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Name: "portname1",
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Port: 80,
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TargetPort: intstr.FromString(svc1port),
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},
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{
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Name: "portname2",
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Port: 81,
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TargetPort: intstr.FromString(svc2port),
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},
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},
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},
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}
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_, err := fcs.Core().Services(ns).Create(service)
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Expect(err).NotTo(HaveOccurred())
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for _, cs := range clusterClientSets {
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waitForFederatedServiceShard(cs, ns, service, 1)
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}
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}
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func discoverService(f *framework.Framework) {
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: FederatedServicePod,
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Labels: map[string]string{"name": FederatedServicePod},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "federated-service-discovery-container",
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Image: "gcr.io/google_containers/busybox:1.24",
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Command: []string{"sh", "-c", "nslookup", FederatedServiceName},
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},
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},
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RestartPolicy: api.RestartPolicyNever,
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},
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}
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f.TestContainerOutputRegexp("federated service discovery", pod, 0, []string{
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`Name:\s+` + FederatedDNS1123Regexp + `\nAddress \d+:\s+` + FederatedIPAddrRegexp + `\s+` + FederatedDNS1123Regexp,
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})
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}
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