mirror of
https://github.com/k3s-io/kubernetes.git
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357 lines
8.1 KiB
Go
357 lines
8.1 KiB
Go
/*
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Copyright 2014 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 cmd
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import (
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"fmt"
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"net/http"
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"net/url"
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"reflect"
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"testing"
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"github.com/spf13/cobra"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/intstr"
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"k8s.io/client-go/rest/fake"
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cmdtesting "k8s.io/kubernetes/pkg/kubectl/cmd/testing"
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"k8s.io/kubernetes/pkg/kubectl/genericclioptions"
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"k8s.io/kubernetes/pkg/kubectl/scheme"
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)
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type fakePortForwarder struct {
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method string
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url *url.URL
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pfErr error
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}
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func (f *fakePortForwarder) ForwardPorts(method string, url *url.URL, opts PortForwardOptions) error {
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f.method = method
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f.url = url
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return f.pfErr
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}
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func testPortForward(t *testing.T, flags map[string]string, args []string) {
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version := "v1"
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tests := []struct {
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name string
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podPath, pfPath string
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pod *corev1.Pod
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pfErr bool
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}{
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{
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name: "pod portforward",
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podPath: "/api/" + version + "/namespaces/test/pods/foo",
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pfPath: "/api/" + version + "/namespaces/test/pods/foo/portforward",
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pod: execPod(),
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},
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{
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name: "pod portforward error",
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podPath: "/api/" + version + "/namespaces/test/pods/foo",
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pfPath: "/api/" + version + "/namespaces/test/pods/foo/portforward",
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pod: execPod(),
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pfErr: true,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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var err error
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tf := cmdtesting.NewTestFactory().WithNamespace("test")
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defer tf.Cleanup()
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codec := scheme.Codecs.LegacyCodec(scheme.Scheme.PrioritizedVersionsAllGroups()...)
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ns := scheme.Codecs
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tf.Client = &fake.RESTClient{
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VersionedAPIPath: "/api/v1",
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GroupVersion: schema.GroupVersion{Group: "", Version: "v1"},
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NegotiatedSerializer: ns,
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Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
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switch p, m := req.URL.Path, req.Method; {
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case p == test.podPath && m == "GET":
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body := objBody(codec, test.pod)
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return &http.Response{StatusCode: 200, Header: defaultHeader(), Body: body}, nil
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default:
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t.Errorf("%s: unexpected request: %#v\n%#v", test.name, req.URL, req)
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return nil, nil
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}
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}),
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}
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tf.ClientConfigVal = defaultClientConfig()
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ff := &fakePortForwarder{}
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if test.pfErr {
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ff.pfErr = fmt.Errorf("pf error")
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}
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opts := &PortForwardOptions{}
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cmd := NewCmdPortForward(tf, genericclioptions.NewTestIOStreamsDiscard())
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cmd.Run = func(cmd *cobra.Command, args []string) {
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if err = opts.Complete(tf, cmd, args); err != nil {
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return
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}
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opts.PortForwarder = ff
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if err = opts.Validate(); err != nil {
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return
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}
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err = opts.RunPortForward()
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}
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for name, value := range flags {
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cmd.Flags().Set(name, value)
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}
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cmd.Run(cmd, args)
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if test.pfErr && err != ff.pfErr {
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t.Errorf("%s: Unexpected port-forward error: %v", test.name, err)
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}
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if !test.pfErr && err != nil {
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t.Errorf("%s: Unexpected error: %v", test.name, err)
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}
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if test.pfErr {
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return
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}
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if ff.url == nil || ff.url.Path != test.pfPath {
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t.Errorf("%s: Did not get expected path for portforward request", test.name)
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}
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if ff.method != "POST" {
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t.Errorf("%s: Did not get method for attach request: %s", test.name, ff.method)
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}
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})
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}
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}
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func TestPortForward(t *testing.T) {
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testPortForward(t, nil, []string{"foo", ":5000", ":1000"})
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}
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func TestTranslateServicePortToTargetPort(t *testing.T) {
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cases := []struct {
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name string
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svc corev1.Service
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pod corev1.Pod
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ports []string
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translated []string
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err bool
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}{
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{
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name: "test success 1 (int port)",
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svc: corev1.Service{
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Spec: corev1.ServiceSpec{
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Ports: []corev1.ServicePort{
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{
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Port: 80,
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TargetPort: intstr.FromInt(8080),
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},
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},
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},
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},
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pod: corev1.Pod{
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Spec: corev1.PodSpec{
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Containers: []corev1.Container{
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{
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Ports: []corev1.ContainerPort{
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{
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Name: "http",
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ContainerPort: int32(8080)},
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},
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},
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},
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},
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},
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ports: []string{"80"},
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translated: []string{"80:8080"},
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err: false,
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},
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{
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name: "test success 2 (clusterIP: None)",
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svc: corev1.Service{
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Spec: corev1.ServiceSpec{
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ClusterIP: "None",
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Ports: []corev1.ServicePort{
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{
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Port: 80,
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TargetPort: intstr.FromInt(8080),
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},
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},
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},
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},
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pod: corev1.Pod{
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Spec: corev1.PodSpec{
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Containers: []corev1.Container{
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{
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Ports: []corev1.ContainerPort{
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{
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Name: "http",
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ContainerPort: int32(8080)},
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},
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},
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},
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},
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},
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ports: []string{"80"},
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translated: []string{"80"},
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err: false,
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},
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{
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name: "test success 3 (named port)",
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svc: corev1.Service{
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Spec: corev1.ServiceSpec{
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Ports: []corev1.ServicePort{
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{
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Port: 80,
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TargetPort: intstr.FromString("http"),
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},
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{
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Port: 443,
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TargetPort: intstr.FromString("https"),
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},
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},
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},
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},
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pod: corev1.Pod{
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Spec: corev1.PodSpec{
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Containers: []corev1.Container{
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{
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Ports: []corev1.ContainerPort{
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{
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Name: "http",
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ContainerPort: int32(8080)},
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{
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Name: "https",
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ContainerPort: int32(8443)},
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},
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},
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},
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},
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},
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ports: []string{"80", "443"},
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translated: []string{"80:8080", "443:8443"},
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err: false,
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},
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{
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name: "test success (targetPort omitted)",
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svc: corev1.Service{
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Spec: corev1.ServiceSpec{
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Ports: []corev1.ServicePort{
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{
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Port: 80,
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},
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},
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},
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},
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pod: corev1.Pod{
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Spec: corev1.PodSpec{
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Containers: []corev1.Container{
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{
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Ports: []corev1.ContainerPort{
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{
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Name: "http",
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ContainerPort: int32(80)},
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},
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},
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},
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},
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},
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ports: []string{"80"},
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translated: []string{"80"},
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err: false,
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},
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{
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name: "test failure 1 (named port lookup failure)",
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svc: corev1.Service{
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Spec: corev1.ServiceSpec{
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Ports: []corev1.ServicePort{
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{
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Port: 80,
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TargetPort: intstr.FromString("http"),
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},
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},
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},
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},
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pod: corev1.Pod{
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Spec: corev1.PodSpec{
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Containers: []corev1.Container{
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{
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Ports: []corev1.ContainerPort{
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{
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Name: "https",
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ContainerPort: int32(443)},
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},
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},
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},
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},
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},
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ports: []string{"80"},
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translated: []string{},
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err: true,
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},
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{
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name: "test failure 2 (service port not declared)",
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svc: corev1.Service{
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Spec: corev1.ServiceSpec{
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Ports: []corev1.ServicePort{
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{
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Port: 80,
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TargetPort: intstr.FromString("http"),
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},
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},
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},
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},
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pod: corev1.Pod{
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Spec: corev1.PodSpec{
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Containers: []corev1.Container{
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{
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Ports: []corev1.ContainerPort{
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{
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Name: "https",
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ContainerPort: int32(443)},
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},
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},
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},
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},
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},
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ports: []string{"443"},
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translated: []string{},
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err: true,
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},
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}
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for _, tc := range cases {
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translated, err := translateServicePortToTargetPort(tc.ports, tc.svc, tc.pod)
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if err != nil {
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if tc.err {
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continue
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}
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t.Errorf("%v: unexpected error: %v", tc.name, err)
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continue
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}
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if tc.err {
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t.Errorf("%v: unexpected success", tc.name)
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continue
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}
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if !reflect.DeepEqual(translated, tc.translated) {
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t.Errorf("%v: expected %v; got %v", tc.name, tc.translated, translated)
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}
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}
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}
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