forked from kubernetes/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 1
/
integration.go
470 lines (421 loc) · 14 KB
/
integration.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
/*
Copyright 2014 Google Inc. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
// A basic integration test for the service.
// Assumes that there is a pre-existing etcd server running on localhost.
package main
import (
"encoding/json"
"io/ioutil"
"net"
"net/http"
"net/http/httptest"
"os"
"reflect"
"runtime"
"sync"
"time"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api/errors"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api/latest"
"github.com/GoogleCloudPlatform/kubernetes/pkg/api/testapi"
"github.com/GoogleCloudPlatform/kubernetes/pkg/apiserver"
"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
"github.com/GoogleCloudPlatform/kubernetes/pkg/controller"
"github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet"
"github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/config"
"github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/dockertools"
"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
"github.com/GoogleCloudPlatform/kubernetes/pkg/master"
"github.com/GoogleCloudPlatform/kubernetes/pkg/service"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util/wait"
"github.com/GoogleCloudPlatform/kubernetes/plugin/pkg/scheduler"
"github.com/GoogleCloudPlatform/kubernetes/plugin/pkg/scheduler/factory"
"github.com/coreos/go-etcd/etcd"
"github.com/golang/glog"
)
const testRootDir = "/tmp/kubelet"
var (
fakeDocker1, fakeDocker2 dockertools.FakeDockerClient
)
type fakePodInfoGetter struct{}
func (fakePodInfoGetter) GetPodInfo(host, podNamespace, podID string) (api.PodInfo, error) {
// This is a horrible hack to get around the fact that we can't provide
// different port numbers per kubelet...
var c client.PodInfoGetter
switch host {
case "localhost":
c = &client.HTTPPodInfoGetter{
Client: http.DefaultClient,
Port: 10250,
}
case "machine":
c = &client.HTTPPodInfoGetter{
Client: http.DefaultClient,
Port: 10251,
}
default:
glog.Fatalf("Can't get info for: '%v', '%v'", host, podNamespace, podID)
}
return c.GetPodInfo("localhost", podNamespace, podID)
}
type delegateHandler struct {
delegate http.Handler
}
func (h *delegateHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
if h.delegate != nil {
h.delegate.ServeHTTP(w, req)
return
}
w.WriteHeader(http.StatusNotFound)
}
func startComponents(manifestURL string) (apiServerURL string) {
// Setup
servers := []string{"http://localhost:4001"}
glog.Infof("Creating etcd client pointing to %v", servers)
machineList := []string{"localhost", "machine"}
handler := delegateHandler{}
apiServer := httptest.NewServer(&handler)
etcdClient := etcd.NewClient(servers)
keys, err := etcdClient.Get("/", false, false)
if err != nil {
glog.Fatalf("Unable to list root etcd keys: %v", err)
}
for _, node := range keys.Node.Nodes {
if _, err := etcdClient.Delete(node.Key, true); err != nil {
glog.Fatalf("Unable delete key: %v", err)
}
}
cl := client.NewOrDie(&client.Config{Host: apiServer.URL, Version: testapi.Version()})
cl.PollPeriod = time.Second * 1
cl.Sync = true
helper, err := master.NewEtcdHelper(etcdClient, "")
if err != nil {
glog.Fatalf("Unable to get etcd helper: %v", err)
}
// Master
m := master.New(&master.Config{
Client: cl,
EtcdHelper: helper,
Minions: machineList,
PodInfoGetter: fakePodInfoGetter{},
})
mux := http.NewServeMux()
apiserver.NewAPIGroup(m.API_v1beta1()).InstallREST(mux, "/api/v1beta1")
apiserver.NewAPIGroup(m.API_v1beta2()).InstallREST(mux, "/api/v1beta2")
apiserver.InstallSupport(mux)
handler.delegate = mux
// Scheduler
schedulerConfigFactory := &factory.ConfigFactory{cl}
schedulerConfig := schedulerConfigFactory.Create()
scheduler.New(schedulerConfig).Run()
endpoints := service.NewEndpointController(cl)
go util.Forever(func() { endpoints.SyncServiceEndpoints() }, time.Second*10)
controllerManager := controller.NewReplicationManager(cl)
// Prove that controllerManager's watch works by making it not sync until after this
// test is over. (Hopefully we don't take 10 minutes!)
controllerManager.Run(10 * time.Minute)
// Kubelet (localhost)
os.MkdirAll(testRootDir, 0750)
cfg1 := config.NewPodConfig(config.PodConfigNotificationSnapshotAndUpdates)
config.NewSourceEtcd(config.EtcdKeyForHost(machineList[0]), etcdClient, cfg1.Channel("etcd"))
config.NewSourceURL(manifestURL, 5*time.Second, cfg1.Channel("url"))
myKubelet := kubelet.NewIntegrationTestKubelet(machineList[0], testRootDir, &fakeDocker1)
go util.Forever(func() { myKubelet.Run(cfg1.Updates()) }, 0)
go util.Forever(func() {
kubelet.ListenAndServeKubeletServer(myKubelet, cfg1.Channel("http"), net.ParseIP("127.0.0.1"), 10250, true)
}, 0)
// Kubelet (machine)
// Create a second kubelet so that the guestbook example's two redis slaves both
// have a place they can schedule.
cfg2 := config.NewPodConfig(config.PodConfigNotificationSnapshotAndUpdates)
config.NewSourceEtcd(config.EtcdKeyForHost(machineList[1]), etcdClient, cfg2.Channel("etcd"))
otherKubelet := kubelet.NewIntegrationTestKubelet(machineList[1], testRootDir, &fakeDocker2)
go util.Forever(func() { otherKubelet.Run(cfg2.Updates()) }, 0)
go util.Forever(func() {
kubelet.ListenAndServeKubeletServer(otherKubelet, cfg2.Channel("http"), net.ParseIP("127.0.0.1"), 10251, true)
}, 0)
return apiServer.URL
}
// podsOnMinions returns true when all of the selected pods exist on a minion.
func podsOnMinions(c *client.Client, pods api.PodList) wait.ConditionFunc {
podInfo := fakePodInfoGetter{}
return func() (bool, error) {
for i := range pods.Items {
host, id, namespace := pods.Items[i].CurrentState.Host, pods.Items[i].ID, pods.Items[i].Namespace
if len(host) == 0 {
return false, nil
}
if _, err := podInfo.GetPodInfo(host, namespace, id); err != nil {
return false, nil
}
}
return true, nil
}
}
func endpointsSet(c *client.Client, ctx api.Context, serviceID string, endpointCount int) wait.ConditionFunc {
return func() (bool, error) {
endpoints, err := c.GetEndpoints(ctx, serviceID)
if err != nil {
return false, nil
}
return len(endpoints.Endpoints) == endpointCount, nil
}
}
func podExists(c *client.Client, ctx api.Context, podID string) wait.ConditionFunc {
return func() (bool, error) {
_, err := c.GetPod(ctx, podID)
return err == nil, nil
}
}
func runReplicationControllerTest(c *client.Client) {
ctx := api.NewDefaultContext()
data, err := ioutil.ReadFile("api/examples/controller.json")
if err != nil {
glog.Fatalf("Unexpected error: %#v", err)
}
var controllerRequest api.ReplicationController
if err := json.Unmarshal(data, &controllerRequest); err != nil {
glog.Fatalf("Unexpected error: %#v", err)
}
glog.Infof("Creating replication controllers")
if _, err := c.CreateReplicationController(ctx, &controllerRequest); err != nil {
glog.Fatalf("Unexpected error: %#v", err)
}
glog.Infof("Done creating replication controllers")
// Give the controllers some time to actually create the pods
if err := wait.Poll(time.Second, time.Second*30, c.ControllerHasDesiredReplicas(controllerRequest)); err != nil {
glog.Fatalf("FAILED: pods never created %v", err)
}
// wait for minions to indicate they have info about the desired pods
pods, err := c.ListPods(ctx, labels.Set(controllerRequest.DesiredState.ReplicaSelector).AsSelector())
if err != nil {
glog.Fatalf("FAILED: unable to get pods to list: %v", err)
}
if err := wait.Poll(time.Second, time.Second*30, podsOnMinions(c, *pods)); err != nil {
glog.Fatalf("FAILED: pods never started running %v", err)
}
glog.Infof("Pods created")
}
func runAtomicPutTest(c *client.Client) {
var svc api.Service
err := c.Post().Path("services").Body(
&api.Service{
TypeMeta: api.TypeMeta{ID: "atomicservice", APIVersion: latest.Version},
Port: 12345,
Labels: map[string]string{
"name": "atomicService",
},
// This is here because validation requires it.
Selector: map[string]string{
"foo": "bar",
},
},
).Do().Into(&svc)
if err != nil {
glog.Fatalf("Failed creating atomicService: %v", err)
}
glog.Info("Created atomicService")
testLabels := labels.Set{
"foo": "bar",
}
for i := 0; i < 5; i++ {
// a: z, b: y, etc...
testLabels[string([]byte{byte('a' + i)})] = string([]byte{byte('z' - i)})
}
var wg sync.WaitGroup
wg.Add(len(testLabels))
for label, value := range testLabels {
go func(l, v string) {
for {
glog.Infof("Starting to update (%s, %s)", l, v)
var tmpSvc api.Service
err := c.Get().
Path("services").
Path(svc.ID).
PollPeriod(100 * time.Millisecond).
Do().
Into(&tmpSvc)
if err != nil {
glog.Errorf("Error getting atomicService: %v", err)
continue
}
if tmpSvc.Selector == nil {
tmpSvc.Selector = map[string]string{l: v}
} else {
tmpSvc.Selector[l] = v
}
glog.Infof("Posting update (%s, %s)", l, v)
err = c.Put().Path("services").Path(svc.ID).Body(&tmpSvc).Do().Error()
if err != nil {
if errors.IsConflict(err) {
glog.Infof("Conflict: (%s, %s)", l, v)
// This is what we expect.
continue
}
glog.Errorf("Unexpected error putting atomicService: %v", err)
continue
}
break
}
glog.Infof("Done update (%s, %s)", l, v)
wg.Done()
}(label, value)
}
wg.Wait()
if err := c.Get().Path("services").Path(svc.ID).Do().Into(&svc); err != nil {
glog.Fatalf("Failed getting atomicService after writers are complete: %v", err)
}
if !reflect.DeepEqual(testLabels, labels.Set(svc.Selector)) {
glog.Fatalf("Selector PUTs were not atomic: wanted %v, got %v", testLabels, svc.Selector)
}
glog.Info("Atomic PUTs work.")
}
func runServiceTest(client *client.Client) {
ctx := api.NewDefaultContext()
pod := api.Pod{
TypeMeta: api.TypeMeta{ID: "foo"},
DesiredState: api.PodState{
Manifest: api.ContainerManifest{
Version: "v1beta1",
Containers: []api.Container{
{
Name: "c1",
Image: "foo",
Ports: []api.Port{
{ContainerPort: 1234},
},
},
},
},
},
CurrentState: api.PodState{
PodIP: "1.2.3.4",
},
Labels: map[string]string{
"name": "thisisalonglabel",
},
}
_, err := client.CreatePod(ctx, &pod)
if err != nil {
glog.Fatalf("Failed to create pod: %v, %v", pod, err)
}
if err := wait.Poll(time.Second, time.Second*20, podExists(client, ctx, pod.ID)); err != nil {
glog.Fatalf("FAILED: pod never started running %v", err)
}
svc := api.Service{
TypeMeta: api.TypeMeta{ID: "service1"},
Selector: map[string]string{
"name": "thisisalonglabel",
},
Port: 8080,
}
_, err = client.CreateService(ctx, &svc)
if err != nil {
glog.Fatalf("Failed to create service: %v, %v", svc, err)
}
if err := wait.Poll(time.Second, time.Second*10, endpointsSet(client, ctx, svc.ID, 1)); err != nil {
glog.Fatalf("FAILED: unexpected endpoints: %v", err)
}
glog.Info("Service test passed.")
}
type testFunc func(*client.Client)
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
util.ReallyCrash = true
util.InitLogs()
defer util.FlushLogs()
go func() {
defer util.FlushLogs()
time.Sleep(3 * time.Minute)
glog.Fatalf("This test has timed out.")
}()
manifestURL := ServeCachedManifestFile()
apiServerURL := startComponents(manifestURL)
// Ok. we're good to go.
glog.Infof("API Server started on %s", apiServerURL)
// Wait for the synchronization threads to come up.
time.Sleep(time.Second * 10)
kubeClient := client.NewOrDie(&client.Config{Host: apiServerURL, Version: testapi.Version()})
// Run tests in parallel
testFuncs := []testFunc{
runReplicationControllerTest,
runAtomicPutTest,
runServiceTest,
}
var wg sync.WaitGroup
wg.Add(len(testFuncs))
for i := range testFuncs {
f := testFuncs[i]
go func() {
f(kubeClient)
wg.Done()
}()
}
wg.Wait()
// Check that kubelet tried to make the pods.
// Using a set to list unique creation attempts. Our fake is
// really stupid, so kubelet tries to create these multiple times.
createdPods := util.StringSet{}
for _, p := range fakeDocker1.Created {
// The last 8 characters are random, so slice them off.
if n := len(p); n > 8 {
createdPods.Insert(p[:n-8])
}
}
for _, p := range fakeDocker2.Created {
// The last 8 characters are random, so slice them off.
if n := len(p); n > 8 {
createdPods.Insert(p[:n-8])
}
}
// We expect 5: 2 net containers + 2 pods from the replication controller +
// 1 net container + 2 pods from the URL +
// 1 net container + 1 pod from the service test.
if len(createdPods) != 9 {
glog.Fatalf("Unexpected list of created pods:\n\n%#v\n\n%#v\n\n%#v\n\n", createdPods.List(), fakeDocker1.Created, fakeDocker2.Created)
}
glog.Infof("OK - found created pods: %#v", createdPods.List())
}
// ServeCachedManifestFile serves a file for kubelet to read.
func ServeCachedManifestFile() (servingAddress string) {
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path == "/manifest" {
w.Write([]byte(testManifestFile))
return
}
glog.Fatalf("Got request: %#v\n", r)
http.NotFound(w, r)
}))
return server.URL + "/manifest"
}
const (
// This is copied from, and should be kept in sync with:
// https://raw.githubusercontent.com/GoogleCloudPlatform/container-vm-guestbook-redis-python/master/manifest.yaml
testManifestFile = `version: v1beta2
id: container-vm-guestbook
containers:
- name: redis
image: dockerfile/redis
volumeMounts:
- name: redis-data
mountPath: /data
- name: guestbook
image: google/guestbook-python-redis
ports:
- name: www
hostPort: 80
containerPort: 80
volumes:
- name: redis-data`
)