mirror of https://github.com/k3s-io/k3s
291 lines
8.3 KiB
Go
291 lines
8.3 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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"bytes"
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"encoding/json"
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"fmt"
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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/util"
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"github.com/fsouza/go-dockerclient"
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"github.com/google/cadvisor/info"
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)
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type fakeKubelet struct {
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infoFunc func(name string) (api.PodInfo, error)
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containerInfoFunc func(podFullName, 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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logFunc func(w http.ResponseWriter, req *http.Request)
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}
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func (fk *fakeKubelet) GetPodInfo(name string) (api.PodInfo, error) {
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return fk.infoFunc(name)
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}
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func (fk *fakeKubelet) GetContainerInfo(podFullName, containerName string, req *info.ContainerInfoRequest) (*info.ContainerInfo, error) {
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return fk.containerInfoFunc(podFullName, 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) GetMachineInfo() (*info.MachineInfo, error) {
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return fk.machineInfoFunc()
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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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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 makeServerTest() *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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server := NewServer(fw.fakeKubelet, fw.updateChan)
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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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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 TestContainer(t *testing.T) {
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fw := makeServerTest()
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expected := []api.ContainerManifest{
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{ID: "test_manifest"},
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}
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body := bytes.NewBuffer([]byte(util.MakeJSONString(expected[0]))) // Only send a single ContainerManifest
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resp, err := http.Post(fw.testHTTPServer.URL+"/container", "application/json", body)
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if err != nil {
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t.Errorf("Post returned: %v", err)
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}
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resp.Body.Close()
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close(fw.updateChan)
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received := fw.updateReader.GetList()
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if len(received) != 1 {
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t.Errorf("Expected 1 manifest, but got %v", len(received))
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}
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expectedPods := []Pod{{Name: "1", Manifest: expected[0]}}
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if !reflect.DeepEqual(expectedPods, received[0]) {
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t.Errorf("Expected %#v, but got %#v", expectedPods, received[0])
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}
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}
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func TestContainers(t *testing.T) {
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fw := makeServerTest()
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expected := []api.ContainerManifest{
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{ID: "test_manifest_1"},
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{ID: "test_manifest_2"},
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}
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body := bytes.NewBuffer([]byte(util.MakeJSONString(expected)))
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resp, err := http.Post(fw.testHTTPServer.URL+"/containers", "application/json", body)
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if err != nil {
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t.Errorf("Post returned: %v", err)
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}
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resp.Body.Close()
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close(fw.updateChan)
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received := fw.updateReader.GetList()
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if len(received) != 1 {
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t.Errorf("Expected 1 update, but got %v", len(received))
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}
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expectedPods := []Pod{{Name: "1", Manifest: expected[0]}, {Name: "2", Manifest: expected[1]}}
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if !reflect.DeepEqual(expectedPods, received[0]) {
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t.Errorf("Expected %#v, but got %#v", expectedPods, received[0])
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}
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}
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func TestPodInfo(t *testing.T) {
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fw := makeServerTest()
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expected := api.PodInfo{"goodpod": docker.Container{ID: "myContainerID"}}
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fw.fakeKubelet.infoFunc = func(name string) (api.PodInfo, error) {
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if name == "goodpod.etcd" {
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return expected, nil
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}
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return nil, fmt.Errorf("bad pod %s", name)
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}
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resp, err := http.Get(fw.testHTTPServer.URL + "/podInfo?podID=goodpod")
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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 := makeServerTest()
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expectedInfo := &info.ContainerInfo{
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StatsPercentiles: &info.ContainerStatsPercentiles{
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MaxMemoryUsage: 1024001,
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CpuUsagePercentiles: []info.Percentile{
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{50, 150},
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{80, 180},
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{90, 190},
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},
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MemoryUsagePercentiles: []info.Percentile{
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{50, 150},
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{80, 180},
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{90, 190},
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},
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},
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}
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expectedPodID := "somepod"
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expectedContainerName := "goodcontainer"
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fw.fakeKubelet.containerInfoFunc = func(podID, 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", expectedPodID, 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 := makeServerTest()
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expectedInfo := &info.ContainerInfo{
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StatsPercentiles: &info.ContainerStatsPercentiles{
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MaxMemoryUsage: 1024001,
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CpuUsagePercentiles: []info.Percentile{
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{50, 150},
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{80, 180},
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{90, 190},
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},
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MemoryUsagePercentiles: []info.Percentile{
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{50, 150},
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{80, 180},
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{90, 190},
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},
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},
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}
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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 := makeServerTest()
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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 := makeServerTest()
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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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