mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-11-04 04:08:16 +00:00
502 lines
16 KiB
Go
502 lines
16 KiB
Go
/*
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Copyright 2014 Google Inc. 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 kubelet
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import (
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"net/http/httptest"
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"net/http/httputil"
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"reflect"
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"strings"
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"testing"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/types"
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"github.com/google/cadvisor/info"
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)
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type fakeKubelet struct {
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podByNameFunc func(namespace, name string) (*api.BoundPod, bool)
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statusFunc func(name string) (api.PodStatus, error)
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containerInfoFunc func(podFullName string, uid types.UID, containerName string, req *info.ContainerInfoRequest) (*info.ContainerInfo, error)
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rootInfoFunc func(query *info.ContainerInfoRequest) (*info.ContainerInfo, error)
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machineInfoFunc func() (*info.MachineInfo, error)
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boundPodsFunc func() ([]api.BoundPod, error)
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logFunc func(w http.ResponseWriter, req *http.Request)
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runFunc func(podFullName string, uid types.UID, containerName string, cmd []string) ([]byte, error)
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dockerVersionFunc func() (string, error)
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containerLogsFunc func(podFullName, containerName, tail string, follow bool, stdout, stderr io.Writer) error
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}
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func (fk *fakeKubelet) GetPodByName(namespace, name string) (*api.BoundPod, bool) {
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return fk.podByNameFunc(namespace, name)
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}
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func (fk *fakeKubelet) GetPodStatus(name string, uid types.UID) (api.PodStatus, error) {
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return fk.statusFunc(name)
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}
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func (fk *fakeKubelet) GetContainerInfo(podFullName string, uid types.UID, containerName string, req *info.ContainerInfoRequest) (*info.ContainerInfo, error) {
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return fk.containerInfoFunc(podFullName, uid, containerName, req)
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}
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func (fk *fakeKubelet) GetRootInfo(req *info.ContainerInfoRequest) (*info.ContainerInfo, error) {
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return fk.rootInfoFunc(req)
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}
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func (fk *fakeKubelet) GetDockerVersion() (string, error) {
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return fk.dockerVersionFunc()
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}
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func (fk *fakeKubelet) GetMachineInfo() (*info.MachineInfo, error) {
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return fk.machineInfoFunc()
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}
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func (fk *fakeKubelet) GetBoundPods() ([]api.BoundPod, error) {
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return fk.boundPodsFunc()
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}
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func (fk *fakeKubelet) ServeLogs(w http.ResponseWriter, req *http.Request) {
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fk.logFunc(w, req)
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}
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func (fk *fakeKubelet) GetKubeletContainerLogs(podFullName, containerName, tail string, follow bool, stdout, stderr io.Writer) error {
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return fk.containerLogsFunc(podFullName, containerName, tail, follow, stdout, stderr)
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}
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func (fk *fakeKubelet) RunInContainer(podFullName string, uid types.UID, containerName string, cmd []string) ([]byte, error) {
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return fk.runFunc(podFullName, uid, containerName, cmd)
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}
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type serverTestFramework struct {
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updateChan chan interface{}
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updateReader *channelReader
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serverUnderTest *Server
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fakeKubelet *fakeKubelet
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testHTTPServer *httptest.Server
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}
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func newServerTest() *serverTestFramework {
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fw := &serverTestFramework{
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updateChan: make(chan interface{}),
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}
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fw.updateReader = startReading(fw.updateChan)
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fw.fakeKubelet = &fakeKubelet{
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podByNameFunc: func(namespace, name string) (*api.BoundPod, bool) {
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return &api.BoundPod{
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ObjectMeta: api.ObjectMeta{
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Namespace: namespace,
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Name: name,
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Annotations: map[string]string{
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ConfigSourceAnnotationKey: "etcd",
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},
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},
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}, true
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},
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}
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server := NewServer(fw.fakeKubelet, true)
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fw.serverUnderTest = &server
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fw.testHTTPServer = httptest.NewServer(fw.serverUnderTest)
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return fw
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}
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// encodeJSON returns obj marshalled as a JSON string, panicing on any errors
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func encodeJSON(obj interface{}) string {
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data, err := json.Marshal(obj)
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if err != nil {
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panic(err)
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}
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return string(data)
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}
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func readResp(resp *http.Response) (string, error) {
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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return string(body), err
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}
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func TestPodStatus(t *testing.T) {
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fw := newServerTest()
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expected := api.PodStatus{
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Info: map[string]api.ContainerStatus{
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"goodpod": {},
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},
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}
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fw.fakeKubelet.statusFunc = func(name string) (api.PodStatus, error) {
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if name == "goodpod.default.etcd" {
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return expected, nil
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}
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return api.PodStatus{}, fmt.Errorf("bad pod %s", name)
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/podInfo?podID=goodpod&podNamespace=default")
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if err != nil {
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t.Errorf("Got error GETing: %v", err)
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}
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got, err := readResp(resp)
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if err != nil {
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t.Errorf("Error reading body: %v", err)
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}
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expectedBytes, err := json.Marshal(expected)
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if err != nil {
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t.Fatalf("Unexpected marshal error %v", err)
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}
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if got != string(expectedBytes) {
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t.Errorf("Expected: '%v', got: '%v'", expected, got)
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}
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}
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func TestContainerInfo(t *testing.T) {
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fw := newServerTest()
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expectedInfo := &info.ContainerInfo{}
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podID := "somepod"
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expectedPodID := "somepod" + ".default.etcd"
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expectedContainerName := "goodcontainer"
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fw.fakeKubelet.containerInfoFunc = func(podID string, uid types.UID, containerName string, req *info.ContainerInfoRequest) (*info.ContainerInfo, error) {
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if podID != expectedPodID || containerName != expectedContainerName {
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return nil, fmt.Errorf("bad podID or containerName: podID=%v; containerName=%v", podID, containerName)
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}
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return expectedInfo, nil
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}
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resp, err := http.Get(fw.testHTTPServer.URL + fmt.Sprintf("/stats/%v/%v", podID, expectedContainerName))
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if err != nil {
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t.Fatalf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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var receivedInfo info.ContainerInfo
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err = json.NewDecoder(resp.Body).Decode(&receivedInfo)
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if err != nil {
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t.Fatalf("received invalid json data: %v", err)
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}
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if !reflect.DeepEqual(&receivedInfo, expectedInfo) {
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t.Errorf("received wrong data: %#v", receivedInfo)
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}
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}
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func TestContainerInfoWithUidNamespace(t *testing.T) {
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fw := newServerTest()
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expectedInfo := &info.ContainerInfo{}
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podID := "somepod"
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expectedNamespace := "custom"
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expectedPodID := "somepod" + "." + expectedNamespace + ".etcd"
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expectedContainerName := "goodcontainer"
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expectedUid := "9b01b80f-8fb4-11e4-95ab-4200af06647"
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fw.fakeKubelet.containerInfoFunc = func(podID string, uid types.UID, containerName string, req *info.ContainerInfoRequest) (*info.ContainerInfo, error) {
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if podID != expectedPodID || string(uid) != expectedUid || containerName != expectedContainerName {
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return nil, fmt.Errorf("bad podID or uid or containerName: podID=%v; uid=%v; containerName=%v", podID, uid, containerName)
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}
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return expectedInfo, nil
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}
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resp, err := http.Get(fw.testHTTPServer.URL + fmt.Sprintf("/stats/%v/%v/%v/%v", expectedNamespace, podID, expectedUid, expectedContainerName))
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if err != nil {
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t.Fatalf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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var receivedInfo info.ContainerInfo
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err = json.NewDecoder(resp.Body).Decode(&receivedInfo)
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if err != nil {
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t.Fatalf("received invalid json data: %v", err)
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}
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if !reflect.DeepEqual(&receivedInfo, expectedInfo) {
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t.Errorf("received wrong data: %#v", receivedInfo)
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}
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}
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func TestRootInfo(t *testing.T) {
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fw := newServerTest()
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expectedInfo := &info.ContainerInfo{}
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fw.fakeKubelet.rootInfoFunc = func(req *info.ContainerInfoRequest) (*info.ContainerInfo, error) {
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return expectedInfo, nil
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/stats")
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if err != nil {
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t.Fatalf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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var receivedInfo info.ContainerInfo
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err = json.NewDecoder(resp.Body).Decode(&receivedInfo)
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if err != nil {
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t.Fatalf("received invalid json data: %v", err)
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}
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if !reflect.DeepEqual(&receivedInfo, expectedInfo) {
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t.Errorf("received wrong data: %#v", receivedInfo)
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}
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}
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func TestMachineInfo(t *testing.T) {
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fw := newServerTest()
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expectedInfo := &info.MachineInfo{
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NumCores: 4,
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MemoryCapacity: 1024,
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}
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fw.fakeKubelet.machineInfoFunc = func() (*info.MachineInfo, error) {
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return expectedInfo, nil
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/spec")
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if err != nil {
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t.Fatalf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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var receivedInfo info.MachineInfo
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err = json.NewDecoder(resp.Body).Decode(&receivedInfo)
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if err != nil {
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t.Fatalf("received invalid json data: %v", err)
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}
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if !reflect.DeepEqual(&receivedInfo, expectedInfo) {
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t.Errorf("received wrong data: %#v", receivedInfo)
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}
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}
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func TestServeLogs(t *testing.T) {
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fw := newServerTest()
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content := string(`<pre><a href="kubelet.log">kubelet.log</a><a href="google.log">google.log</a></pre>`)
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fw.fakeKubelet.logFunc = func(w http.ResponseWriter, req *http.Request) {
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w.WriteHeader(http.StatusOK)
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w.Header().Add("Content-Type", "text/html")
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w.Write([]byte(content))
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/logs/")
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if err != nil {
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t.Fatalf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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body, err := httputil.DumpResponse(resp, true)
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if err != nil {
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// copying the response body did not work
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t.Errorf("Cannot copy resp: %#v", err)
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}
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result := string(body)
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if !strings.Contains(result, "kubelet.log") || !strings.Contains(result, "google.log") {
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t.Errorf("Received wrong data: %s", result)
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}
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}
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func TestServeRunInContainer(t *testing.T) {
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fw := newServerTest()
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output := "foo bar"
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podNamespace := "other"
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podName := "foo"
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expectedPodName := podName + "." + podNamespace + ".etcd"
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expectedContainerName := "baz"
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expectedCommand := "ls -a"
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fw.fakeKubelet.runFunc = func(podFullName string, uid types.UID, containerName string, cmd []string) ([]byte, error) {
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if podFullName != expectedPodName {
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t.Errorf("expected %s, got %s", expectedPodName, podFullName)
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}
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if containerName != expectedContainerName {
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t.Errorf("expected %s, got %s", expectedContainerName, containerName)
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}
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if strings.Join(cmd, " ") != expectedCommand {
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t.Errorf("expected: %s, got %v", expectedCommand, cmd)
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}
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return []byte(output), nil
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/run/" + podNamespace + "/" + podName + "/" + expectedContainerName + "?cmd=ls%20-a")
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if err != nil {
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t.Fatalf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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// copying the response body did not work
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t.Errorf("Cannot copy resp: %#v", err)
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}
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result := string(body)
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if result != output {
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t.Errorf("expected %s, got %s", output, result)
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}
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}
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func TestServeRunInContainerWithUID(t *testing.T) {
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fw := newServerTest()
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output := "foo bar"
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podNamespace := "other"
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podName := "foo"
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expectedPodName := podName + "." + podNamespace + ".etcd"
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expectedUID := "7e00838d_-_3523_-_11e4_-_8421_-_42010af0a720"
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expectedContainerName := "baz"
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expectedCommand := "ls -a"
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fw.fakeKubelet.runFunc = func(podFullName string, uid types.UID, containerName string, cmd []string) ([]byte, error) {
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if podFullName != expectedPodName {
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t.Errorf("expected %s, got %s", expectedPodName, podFullName)
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}
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if string(uid) != expectedUID {
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t.Errorf("expected %s, got %s", expectedUID, uid)
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}
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if containerName != expectedContainerName {
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t.Errorf("expected %s, got %s", expectedContainerName, containerName)
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}
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if strings.Join(cmd, " ") != expectedCommand {
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t.Errorf("expected: %s, got %v", expectedCommand, cmd)
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}
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return []byte(output), nil
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/run/" + podNamespace + "/" + podName + "/" + expectedUID + "/" + expectedContainerName + "?cmd=ls%20-a")
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if err != nil {
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t.Fatalf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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// copying the response body did not work
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t.Errorf("Cannot copy resp: %#v", err)
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}
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result := string(body)
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if result != output {
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t.Errorf("expected %s, got %s", output, result)
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}
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}
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func TestContainerLogs(t *testing.T) {
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fw := newServerTest()
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output := "foo bar"
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podNamespace := "other"
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podName := "foo"
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expectedPodName := podName + ".other.etcd"
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expectedContainerName := "baz"
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expectedTail := ""
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expectedFollow := false
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fw.fakeKubelet.containerLogsFunc = func(podFullName, containerName, tail string, follow bool, stdout, stderr io.Writer) error {
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if podFullName != expectedPodName {
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t.Errorf("expected %s, got %s", expectedPodName, podFullName)
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}
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if containerName != expectedContainerName {
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t.Errorf("expected %s, got %s", expectedContainerName, containerName)
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}
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if tail != expectedTail {
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t.Errorf("expected %s, got %s", expectedTail, tail)
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}
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if follow != expectedFollow {
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t.Errorf("expected %t, got %t", expectedFollow, follow)
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}
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return nil
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/containerLogs/" + podNamespace + "/" + podName + "/" + expectedContainerName)
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if err != nil {
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t.Errorf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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t.Errorf("Error reading container logs: %v", err)
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}
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result := string(body)
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if result != string(body) {
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t.Errorf("Expected: '%v', got: '%v'", output, result)
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}
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}
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func TestContainerLogsWithTail(t *testing.T) {
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fw := newServerTest()
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output := "foo bar"
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podNamespace := "other"
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podName := "foo"
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expectedPodName := podName + ".other.etcd"
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expectedContainerName := "baz"
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expectedTail := "5"
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expectedFollow := false
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fw.fakeKubelet.containerLogsFunc = func(podFullName, containerName, tail string, follow bool, stdout, stderr io.Writer) error {
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if podFullName != expectedPodName {
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t.Errorf("expected %s, got %s", expectedPodName, podFullName)
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}
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if containerName != expectedContainerName {
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t.Errorf("expected %s, got %s", expectedContainerName, containerName)
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}
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if tail != expectedTail {
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t.Errorf("expected %s, got %s", expectedTail, tail)
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}
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if follow != expectedFollow {
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t.Errorf("expected %t, got %t", expectedFollow, follow)
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}
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return nil
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/containerLogs/" + podNamespace + "/" + podName + "/" + expectedContainerName + "?tail=5")
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if err != nil {
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t.Errorf("Got error GETing: %v", err)
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}
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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t.Errorf("Error reading container logs: %v", err)
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}
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result := string(body)
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if result != string(body) {
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t.Errorf("Expected: '%v', got: '%v'", output, result)
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}
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}
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func TestContainerLogsWithFollow(t *testing.T) {
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fw := newServerTest()
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output := "foo bar"
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podNamespace := "other"
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podName := "foo"
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expectedPodName := podName + ".other.etcd"
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expectedContainerName := "baz"
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expectedTail := ""
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expectedFollow := true
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fw.fakeKubelet.containerLogsFunc = func(podFullName, containerName, tail string, follow bool, stdout, stderr io.Writer) error {
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if podFullName != expectedPodName {
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t.Errorf("expected %s, got %s", expectedPodName, podFullName)
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}
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if containerName != expectedContainerName {
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t.Errorf("expected %s, got %s", expectedContainerName, containerName)
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}
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if tail != expectedTail {
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|
t.Errorf("expected %s, got %s", expectedTail, tail)
|
|
}
|
|
if follow != expectedFollow {
|
|
t.Errorf("expected %t, got %t", expectedFollow, follow)
|
|
}
|
|
return nil
|
|
}
|
|
resp, err := http.Get(fw.testHTTPServer.URL + "/containerLogs/" + podNamespace + "/" + podName + "/" + expectedContainerName + "?follow=1")
|
|
if err != nil {
|
|
t.Errorf("Got error GETing: %v", err)
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
t.Errorf("Error reading container logs: %v", err)
|
|
}
|
|
result := string(body)
|
|
if result != string(body) {
|
|
t.Errorf("Expected: '%v', got: '%v'", output, result)
|
|
}
|
|
}
|