forked from kubernetes/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 0
/
federated-ingress.go
492 lines (441 loc) · 20.7 KB
/
federated-ingress.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
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
/*
Copyright 2016 The Kubernetes Authors.
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.
*/
package e2e_federation
import (
"fmt"
"net/http"
"os"
"reflect"
"strconv"
"strings"
"time"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/wait"
fedclientset "k8s.io/kubernetes/federation/client/clientset_generated/federation_clientset"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
kubeclientset "k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
"k8s.io/kubernetes/test/e2e/framework"
fedframework "k8s.io/kubernetes/test/e2e_federation/framework"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
const (
MaxRetriesOnFederatedApiserver = 3
FederatedIngressTimeout = 120 * time.Second
FederatedIngressName = "federated-ingress"
FederatedIngressServiceName = "federated-ingress-service"
FederatedIngressServicePodName = "federated-ingress-service-test-pod"
)
const (
// timeout on a single http request.
reqTimeout = 10 * time.Second
)
var _ = framework.KubeDescribe("Federated ingresses [Feature:Federation]", func() {
f := fedframework.NewDefaultFederatedFramework("federated-ingress")
// Create/delete ingress api objects
// Validate federation apiserver, does not rely on underlying clusters or federation ingress controller.
Describe("Federated Ingresses", func() {
AfterEach(func() {
nsName := f.FederationNamespace.Name
// Delete all ingresses.
deleteAllIngressesOrFail(f.FederationClientset, nsName)
})
It("should be created and deleted successfully", func() {
fedframework.SkipUnlessFederated(f.ClientSet)
framework.SkipUnlessProviderIs("gce", "gke") // TODO: Federated ingress is not yet supported on non-GCP platforms.
nsName := f.FederationNamespace.Name
ingress := createIngressOrFail(f.FederationClientset, nsName)
By(fmt.Sprintf("Creation of ingress %q in namespace %q succeeded. Deleting ingress.", ingress.Name, nsName))
// Cleanup
err := f.FederationClientset.Extensions().Ingresses(nsName).Delete(ingress.Name, &metav1.DeleteOptions{})
framework.ExpectNoError(err, "Error deleting ingress %q in namespace %q", ingress.Name, ingress.Namespace)
By(fmt.Sprintf("Deletion of ingress %q in namespace %q succeeded.", ingress.Name, nsName))
})
})
// e2e cases for federation ingress controller
var _ = Describe("Federated Ingresses", func() {
var (
clusters map[string]*cluster // All clusters, keyed by cluster name
primaryClusterName, federationName, ns string
jig *federationTestJig
)
// register clusters in federation apiserver
BeforeEach(func() {
fedframework.SkipUnlessFederated(f.ClientSet)
framework.SkipUnlessProviderIs("gce", "gke") // TODO: Federated ingress is not yet supported on non-GCP platforms.
if federationName = os.Getenv("FEDERATION_NAME"); federationName == "" {
federationName = DefaultFederationName
}
jig = newFederationTestJig(f.FederationClientset)
clusters = map[string]*cluster{}
primaryClusterName = registerClusters(clusters, UserAgentName, federationName, f)
ns = f.FederationNamespace.Name
})
AfterEach(func() {
// Delete all ingresses.
nsName := f.FederationNamespace.Name
deleteAllIngressesOrFail(f.FederationClientset, nsName)
unregisterClusters(clusters, f)
})
It("should create and update matching ingresses in underlying clusters", func() {
ingress := createIngressOrFail(f.FederationClientset, ns)
// wait for ingress shards being created
waitForIngressShardsOrFail(ns, ingress, clusters)
ingress = updateIngressOrFail(f.FederationClientset, ns)
waitForIngressShardsUpdatedOrFail(ns, ingress, clusters)
})
It("should be deleted from underlying clusters when OrphanDependents is false", func() {
fedframework.SkipUnlessFederated(f.ClientSet)
nsName := f.FederationNamespace.Name
orphanDependents := false
verifyCascadingDeletionForIngress(f.FederationClientset, clusters, &orphanDependents, nsName)
By(fmt.Sprintf("Verified that ingresses were deleted from underlying clusters"))
})
It("should not be deleted from underlying clusters when OrphanDependents is true", func() {
fedframework.SkipUnlessFederated(f.ClientSet)
nsName := f.FederationNamespace.Name
orphanDependents := true
verifyCascadingDeletionForIngress(f.FederationClientset, clusters, &orphanDependents, nsName)
By(fmt.Sprintf("Verified that ingresses were not deleted from underlying clusters"))
})
It("should not be deleted from underlying clusters when OrphanDependents is nil", func() {
fedframework.SkipUnlessFederated(f.ClientSet)
nsName := f.FederationNamespace.Name
verifyCascadingDeletionForIngress(f.FederationClientset, clusters, nil, nsName)
By(fmt.Sprintf("Verified that ingresses were not deleted from underlying clusters"))
})
var _ = Describe("Ingress connectivity and DNS", func() {
var (
service *v1.Service
)
BeforeEach(func() {
fedframework.SkipUnlessFederated(f.ClientSet)
// create backend pod
createBackendPodsOrFail(clusters, ns, FederatedIngressServicePodName)
// create backend service
service = createServiceOrFail(f.FederationClientset, ns, FederatedIngressServiceName)
// create ingress object
jig.ing = createIngressOrFail(f.FederationClientset, ns)
// wait for services objects sync
waitForServiceShardsOrFail(ns, service, clusters)
// wait for ingress objects sync
waitForIngressShardsOrFail(ns, jig.ing, clusters)
})
AfterEach(func() {
deleteBackendPodsOrFail(clusters, ns)
if service != nil {
deleteServiceOrFail(f.FederationClientset, ns, service.Name, nil)
cleanupServiceShardsAndProviderResources(ns, service, clusters)
service = nil
} else {
By("No service to delete. Service is nil")
}
if jig.ing != nil {
deleteIngressOrFail(f.FederationClientset, ns, jig.ing.Name, nil)
for clusterName, cluster := range clusters {
deleteClusterIngressOrFail(clusterName, cluster.Clientset, ns, jig.ing.Name)
}
jig.ing = nil
} else {
By("No ingress to delete. Ingress is nil")
}
})
PIt("should be able to discover a federated ingress service via DNS", func() {
// we are about the ingress name
svcDNSNames := []string{
fmt.Sprintf("%s.%s", FederatedIngressServiceName, ns),
fmt.Sprintf("%s.%s.svc.cluster.local.", FederatedIngressServiceName, ns),
// TODO these two entries are not set yet
//fmt.Sprintf("%s.%s.%s", FederatedIngressServiceName, ns, federationName),
//fmt.Sprintf("%s.%s.%s.svc.cluster.local.", FederatedIngressServiceName, ns, federationName),
}
// check dns records in underlying cluster
for i, DNSName := range svcDNSNames {
discoverService(f, DNSName, true, "federated-ingress-e2e-discovery-pod-"+strconv.Itoa(i))
}
// TODO check dns record in global dns server
})
It("should be able to connect to a federated ingress via its load balancer", func() {
// check the traffic on federation ingress
jig.waitForFederatedIngress()
})
})
})
})
// Deletes all Ingresses in the given namespace name.
func deleteAllIngressesOrFail(clientset *fedclientset.Clientset, nsName string) {
orphanDependents := false
err := clientset.Extensions().Ingresses(nsName).DeleteCollection(&metav1.DeleteOptions{OrphanDependents: &orphanDependents}, metav1.ListOptions{})
Expect(err).NotTo(HaveOccurred(), fmt.Sprintf("Error in deleting ingresses in namespace: %s", nsName))
}
/*
equivalent returns true if the two ingress spec are equivalent.
*/
func equivalentIngress(federatedIngress, clusterIngress v1beta1.Ingress) bool {
return reflect.DeepEqual(clusterIngress.Spec, federatedIngress.Spec)
}
// verifyCascadingDeletionForIngress verifies that ingresses are deleted from
// underlying clusters when orphan dependents is false and they are not deleted
// when orphan dependents is true.
func verifyCascadingDeletionForIngress(clientset *fedclientset.Clientset, clusters map[string]*cluster, orphanDependents *bool, nsName string) {
ingress := createIngressOrFail(clientset, nsName)
ingressName := ingress.Name
// Check subclusters if the ingress was created there.
By(fmt.Sprintf("Waiting for ingress %s to be created in all underlying clusters", ingressName))
waitForIngressShardsOrFail(nsName, ingress, clusters)
By(fmt.Sprintf("Deleting ingress %s", ingressName))
deleteIngressOrFail(clientset, nsName, ingressName, orphanDependents)
By(fmt.Sprintf("Verifying ingresses %s in underlying clusters", ingressName))
errMessages := []string{}
// ingress should be present in underlying clusters unless orphanDependents is false.
shouldExist := orphanDependents == nil || *orphanDependents == true
for clusterName, clusterClientset := range clusters {
_, err := clusterClientset.Extensions().Ingresses(nsName).Get(ingressName, metav1.GetOptions{})
if shouldExist && errors.IsNotFound(err) {
errMessages = append(errMessages, fmt.Sprintf("unexpected NotFound error for ingress %s in cluster %s, expected ingress to exist", ingressName, clusterName))
} else if !shouldExist && !errors.IsNotFound(err) {
errMessages = append(errMessages, fmt.Sprintf("expected NotFound error for ingress %s in cluster %s, got error: %v", ingressName, clusterName, err))
}
}
if len(errMessages) != 0 {
framework.Failf("%s", strings.Join(errMessages, "; "))
}
}
/*
waitForIngressOrFail waits until a ingress is either present or absent in the cluster specified by clientset.
If the condition is not met within timout, it fails the calling test.
*/
func waitForIngressOrFail(clientset *kubeclientset.Clientset, namespace string, ingress *v1beta1.Ingress, present bool, timeout time.Duration) {
By(fmt.Sprintf("Fetching a federated ingress shard of ingress %q in namespace %q from cluster", ingress.Name, namespace))
var clusterIngress *v1beta1.Ingress
err := wait.PollImmediate(framework.Poll, timeout, func() (bool, error) {
clusterIngress, err := clientset.Ingresses(namespace).Get(ingress.Name, metav1.GetOptions{})
if (!present) && errors.IsNotFound(err) { // We want it gone, and it's gone.
By(fmt.Sprintf("Success: shard of federated ingress %q in namespace %q in cluster is absent", ingress.Name, namespace))
return true, nil // Success
}
if present && err == nil { // We want it present, and the Get succeeded, so we're all good.
By(fmt.Sprintf("Success: shard of federated ingress %q in namespace %q in cluster is present", ingress.Name, namespace))
return true, nil // Success
}
By(fmt.Sprintf("Ingress %q in namespace %q in cluster. Found: %v, waiting for Found: %v, trying again in %s (err=%v)", ingress.Name, namespace, clusterIngress != nil && err == nil, present, framework.Poll, err))
return false, nil
})
framework.ExpectNoError(err, "Failed to verify ingress %q in namespace %q in cluster: Present=%v", ingress.Name, namespace, present)
if present && clusterIngress != nil {
Expect(equivalentIngress(*clusterIngress, *ingress))
}
}
/*
waitForIngressShardsOrFail waits for the ingress to appear in all clusters
*/
func waitForIngressShardsOrFail(namespace string, ingress *v1beta1.Ingress, clusters map[string]*cluster) {
framework.Logf("Waiting for ingress %q in %d clusters", ingress.Name, len(clusters))
for _, c := range clusters {
waitForIngressOrFail(c.Clientset, namespace, ingress, true, FederatedIngressTimeout)
}
}
/*
waitForIngressShardsUpdatedOrFail waits for the ingress to be updated in all clusters
*/
func waitForIngressShardsUpdatedOrFail(namespace string, ingress *v1beta1.Ingress, clusters map[string]*cluster) {
framework.Logf("Waiting for ingress %q in %d clusters", ingress.Name, len(clusters))
for _, c := range clusters {
waitForIngressUpdateOrFail(c.Clientset, namespace, ingress, FederatedIngressTimeout)
}
}
/*
waitForIngressUpdateOrFail waits until a ingress is updated in the specified cluster with same spec of federated ingress.
If the condition is not met within timeout, it fails the calling test.
*/
func waitForIngressUpdateOrFail(clientset *kubeclientset.Clientset, namespace string, ingress *v1beta1.Ingress, timeout time.Duration) {
By(fmt.Sprintf("Fetching a federated ingress shard of ingress %q in namespace %q from cluster", ingress.Name, namespace))
err := wait.PollImmediate(framework.Poll, timeout, func() (bool, error) {
clusterIngress, err := clientset.Ingresses(namespace).Get(ingress.Name, metav1.GetOptions{})
if err == nil { // We want it present, and the Get succeeded, so we're all good.
if equivalentIngress(*clusterIngress, *ingress) {
By(fmt.Sprintf("Success: shard of federated ingress %q in namespace %q in cluster is updated", ingress.Name, namespace))
return true, nil
}
By(fmt.Sprintf("Ingress %q in namespace %q in cluster, waiting for service being updated, trying again in %s (err=%v)", ingress.Name, namespace, framework.Poll, err))
return false, nil
}
By(fmt.Sprintf("Ingress %q in namespace %q in cluster, waiting for service being updated, trying again in %s (err=%v)", ingress.Name, namespace, framework.Poll, err))
return false, nil
})
framework.ExpectNoError(err, "Failed to verify ingress %q in namespace %q in cluster", ingress.Name, namespace)
}
/*
waitForIngressShardsGoneOrFail waits for the ingress to disappear in all clusters
*/
func waitForIngressShardsGoneOrFail(namespace string, ingress *v1beta1.Ingress, clusters map[string]*cluster) {
framework.Logf("Waiting for ingress %q in %d clusters", ingress.Name, len(clusters))
for _, c := range clusters {
waitForIngressOrFail(c.Clientset, namespace, ingress, false, FederatedIngressTimeout)
}
}
func deleteIngressOrFail(clientset *fedclientset.Clientset, namespace string, ingressName string, orphanDependents *bool) {
if clientset == nil || len(namespace) == 0 || len(ingressName) == 0 {
Fail(fmt.Sprintf("Internal error: invalid parameters passed to deleteIngressOrFail: clientset: %v, namespace: %v, ingress: %v", clientset, namespace, ingressName))
}
err := clientset.Ingresses(namespace).Delete(ingressName, &metav1.DeleteOptions{OrphanDependents: orphanDependents})
framework.ExpectNoError(err, "Error deleting ingress %q from namespace %q", ingressName, namespace)
// Wait for the ingress to be deleted.
err = wait.Poll(framework.Poll, wait.ForeverTestTimeout, func() (bool, error) {
_, err := clientset.Extensions().Ingresses(namespace).Get(ingressName, metav1.GetOptions{})
if err != nil && errors.IsNotFound(err) {
return true, nil
}
return false, err
})
if err != nil {
framework.Failf("Error in deleting ingress %s: %v", ingressName, err)
}
}
// TODO: quinton: This is largely a cut 'n paste of the above. Yuck! Refactor as soon as we have a common interface implmented by both fedclientset.Clientset and kubeclientset.Clientset
func deleteClusterIngressOrFail(clusterName string, clientset *kubeclientset.Clientset, namespace string, ingressName string) {
if clientset == nil || len(namespace) == 0 || len(ingressName) == 0 {
Fail(fmt.Sprintf("Internal error: invalid parameters passed to deleteClusterIngressOrFail: cluster: %q, clientset: %v, namespace: %v, ingress: %v", clusterName, clientset, namespace, ingressName))
}
err := clientset.Ingresses(namespace).Delete(ingressName, metav1.NewDeleteOptions(0))
framework.ExpectNoError(err, "Error deleting cluster ingress %q/%q from cluster %q", namespace, ingressName, clusterName)
}
func createIngressOrFail(clientset *fedclientset.Clientset, namespace string) *v1beta1.Ingress {
if clientset == nil || len(namespace) == 0 {
Fail(fmt.Sprintf("Internal error: invalid parameters passed to createIngressOrFail: clientset: %v, namespace: %v", clientset, namespace))
}
By(fmt.Sprintf("Creating federated ingress %q in namespace %q", FederatedIngressName, namespace))
ingress := &v1beta1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Name: FederatedIngressName,
},
Spec: v1beta1.IngressSpec{
Backend: &v1beta1.IngressBackend{
ServiceName: "testingress-service",
ServicePort: intstr.FromInt(80),
},
},
}
newIng, err := clientset.Extensions().Ingresses(namespace).Create(ingress)
framework.ExpectNoError(err, "Creating ingress %q in namespace %q", ingress.Name, namespace)
By(fmt.Sprintf("Successfully created federated ingress %q in namespace %q", FederatedIngressName, namespace))
return newIng
}
func updateIngressOrFail(clientset *fedclientset.Clientset, namespace string) (newIng *v1beta1.Ingress) {
var err error
if clientset == nil || len(namespace) == 0 {
Fail(fmt.Sprintf("Internal error: invalid parameters passed to createIngressOrFail: clientset: %v, namespace: %v", clientset, namespace))
}
ingress := &v1beta1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Name: FederatedIngressName,
},
Spec: v1beta1.IngressSpec{
Backend: &v1beta1.IngressBackend{
ServiceName: "updated-testingress-service",
ServicePort: intstr.FromInt(80),
},
},
}
err = waitForFederatedIngressExists(clientset, namespace, FederatedIngressName, FederatedIngressTimeout)
if err != nil {
framework.Failf("failed to get ingress %q: %v", FederatedIngressName, err)
}
for i := 0; i < MaxRetriesOnFederatedApiserver; i++ {
newIng, err = clientset.Extensions().Ingresses(namespace).Update(ingress)
if err == nil {
framework.DescribeIng(namespace)
return newIng
}
if !errors.IsConflict(err) && !errors.IsServerTimeout(err) {
framework.Failf("failed to update ingress %q: %v", FederatedIngressName, err)
}
}
framework.Failf("too many retries updating ingress %q", FederatedIngressName)
return nil
}
func (j *federationTestJig) waitForFederatedIngress() {
// Wait for the loadbalancer IP.
address, err := waitForFederatedIngressAddress(j.client, j.ing.Namespace, j.ing.Name, framework.LoadBalancerPollTimeout)
if err != nil {
framework.Failf("Ingress failed to acquire an IP address within %v", framework.LoadBalancerPollTimeout)
}
j.address = address
framework.Logf("Found address %v for ingress %v", j.address, j.ing.Name)
timeoutClient := &http.Client{Timeout: reqTimeout}
// Check that all rules respond to a simple GET.
for _, rules := range j.ing.Spec.Rules {
proto := "http"
for _, p := range rules.IngressRuleValue.HTTP.Paths {
route := fmt.Sprintf("%v://%v%v", proto, address, p.Path)
framework.Logf("Testing route %v host %v with simple GET", route, rules.Host)
framework.ExpectNoError(framework.PollURL(route, rules.Host, framework.LoadBalancerPollTimeout, framework.LoadBalancerPollInterval, timeoutClient, false))
}
}
}
type federationTestJig struct {
// TODO add TLS check later
rootCAs map[string][]byte
address string
ing *v1beta1.Ingress
client *fedclientset.Clientset
}
func newFederationTestJig(c *fedclientset.Clientset) *federationTestJig {
return &federationTestJig{client: c, rootCAs: map[string][]byte{}}
}
// WaitForFederatedIngressAddress waits for the Ingress to acquire an address.
func waitForFederatedIngressAddress(c *fedclientset.Clientset, ns, ingName string, timeout time.Duration) (string, error) {
var address string
err := wait.PollImmediate(10*time.Second, timeout, func() (bool, error) {
ipOrNameList, err := getFederatedIngressAddress(c, ns, ingName)
if err != nil || len(ipOrNameList) == 0 {
framework.Logf("Waiting for Ingress %v to acquire IP, error %v", ingName, err)
return false, nil
}
address = ipOrNameList[0]
return true, nil
})
return address, err
}
// waitForFederatedIngressExists waits for the Ingress object exists.
func waitForFederatedIngressExists(c *fedclientset.Clientset, ns, ingName string, timeout time.Duration) error {
err := wait.PollImmediate(10*time.Second, timeout, func() (bool, error) {
_, err := c.Extensions().Ingresses(ns).Get(ingName, metav1.GetOptions{})
if err != nil {
framework.Logf("Waiting for Ingress %v, error %v", ingName, err)
return false, nil
}
return true, nil
})
return err
}
// getFederatedIngressAddress returns the ips/hostnames associated with the Ingress.
func getFederatedIngressAddress(client *fedclientset.Clientset, ns, name string) ([]string, error) {
ing, err := client.Extensions().Ingresses(ns).Get(name, metav1.GetOptions{})
if err != nil {
return nil, err
}
addresses := []string{}
for _, a := range ing.Status.LoadBalancer.Ingress {
if a.IP != "" {
addresses = append(addresses, a.IP)
}
if a.Hostname != "" {
addresses = append(addresses, a.Hostname)
}
}
return addresses, nil
}