forked from knative/serving
-
Notifications
You must be signed in to change notification settings - Fork 0
/
service.go
417 lines (361 loc) · 16.9 KB
/
service.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
/*
Copyright 2019 The Knative 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.
*/
// service.go provides methods to perform actions on the service resource.
package v1alpha1
import (
"bytes"
"context"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/json"
"encoding/pem"
"fmt"
"math/big"
"net"
"time"
"knative.dev/pkg/apis/duck"
"github.com/mattbaird/jsonpatch"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
"knative.dev/pkg/test/logging"
"knative.dev/serving/pkg/apis/serving/v1alpha1"
serviceresourcenames "knative.dev/serving/pkg/reconciler/service/resources/names"
pkgTest "knative.dev/pkg/test"
rtesting "knative.dev/serving/pkg/testing/v1alpha1"
"knative.dev/serving/test"
)
func validateCreatedServiceStatus(clients *test.Clients, names *test.ResourceNames) error {
return CheckServiceState(clients.ServingAlphaClient, names.Service, func(s *v1alpha1.Service) (bool, error) {
if s.Status.URL == nil || s.Status.URL.Host == "" {
return false, fmt.Errorf("URL is not present in Service status: %v", s)
}
names.URL = s.Status.URL.URL()
if s.Status.LatestCreatedRevisionName == "" {
return false, fmt.Errorf("LatestCreatedCreatedRevisionName is not present in Service status: %v", s)
}
names.Revision = s.Status.LatestCreatedRevisionName
if s.Status.LatestReadyRevisionName == "" {
return false, fmt.Errorf("LatestReadyRevisionName is not present in Service status: %v", s)
}
if s.Status.ObservedGeneration != 1 {
return false, fmt.Errorf("ObservedGeneration is not 1 in Service status: %v", s)
}
return true, nil
})
}
// GetResourceObjects obtains the services resources from the k8s API server.
func GetResourceObjects(clients *test.Clients, names test.ResourceNames) (*ResourceObjects, error) {
routeObject, err := clients.ServingAlphaClient.Routes.Get(names.Route, metav1.GetOptions{})
if err != nil {
return nil, err
}
serviceObject, err := clients.ServingAlphaClient.Services.Get(names.Service, metav1.GetOptions{})
if err != nil {
return nil, err
}
configObject, err := clients.ServingAlphaClient.Configs.Get(names.Config, metav1.GetOptions{})
if err != nil {
return nil, err
}
revisionObject, err := clients.ServingAlphaClient.Revisions.Get(names.Revision, metav1.GetOptions{})
if err != nil {
return nil, err
}
return &ResourceObjects{
Route: routeObject,
Service: serviceObject,
Config: configObject,
Revision: revisionObject,
}, nil
}
// CreateRunLatestServiceReady creates a new Service in state 'Ready'. This function expects Service and Image name passed in through 'names'.
// Names is updated with the Route and Configuration created by the Service and ResourceObjects is returned with the Service, Route, and Configuration objects.
// Returns error if the service does not come up correctly.
func CreateRunLatestServiceReady(t pkgTest.TLegacy, clients *test.Clients, names *test.ResourceNames, fopt ...rtesting.ServiceOption) (*ResourceObjects, error) {
if names.Image == "" {
return nil, fmt.Errorf("expected non-empty Image name; got Image=%v", names.Image)
}
t.Log("Creating a new Service.", "service", names.Service)
svc, err := CreateLatestService(t, clients, *names, fopt...)
if err != nil {
return nil, err
}
// Populate Route and Configuration Objects with name
names.Route = serviceresourcenames.Route(svc)
names.Config = serviceresourcenames.Configuration(svc)
// If the Service name was not specified, populate it
if names.Service == "" {
names.Service = svc.Name
}
t.Log("Waiting for Service to transition to Ready.", "service", names.Service)
if err = WaitForServiceState(clients.ServingAlphaClient, names.Service, IsServiceReady, "ServiceIsReady"); err != nil {
return nil, err
}
t.Log("Checking to ensure Service Status is populated for Ready service")
err = validateCreatedServiceStatus(clients, names)
if err != nil {
return nil, err
}
t.Log("Getting latest objects Created by Service")
resources, err := GetResourceObjects(clients, *names)
if err == nil {
t.Log("Successfully created Service", names.Service)
}
return resources, err
}
// CreateRunLatestServiceLegacyReady creates a new Service in state 'Ready'. This function expects Service and Image name passed in through 'names'.
// Names is updated with the Route and Configuration created by the Service and ResourceObjects is returned with the Service, Route, and Configuration objects.
// Returns error if the service does not come up correctly.
func CreateRunLatestServiceLegacyReady(t pkgTest.T, clients *test.Clients, names *test.ResourceNames, fopt ...rtesting.ServiceOption) (*ResourceObjects, error) {
if names.Image == "" {
return nil, fmt.Errorf("expected non-empty Image name; got Image=%v", names.Image)
}
t.Log("Creating a new Service.", "service", names.Service)
svc, err := CreateLatestServiceLegacy(t, clients, *names, fopt...)
if err != nil {
return nil, err
}
// Populate Route and Configuration Objects with name
names.Route = serviceresourcenames.Route(svc)
names.Config = serviceresourcenames.Configuration(svc)
// If the Service name was not specified, populate it
if names.Service == "" {
names.Service = svc.Name
}
t.Log("Waiting for Service to transition to Ready.", "service", names.Service)
if err := WaitForServiceState(clients.ServingAlphaClient, names.Service, IsServiceReady, "ServiceIsReady"); err != nil {
return nil, err
}
t.Log("Checking to ensure Service Status is populated for Ready service", names.Service)
err = validateCreatedServiceStatus(clients, names)
if err != nil {
return nil, err
}
t.Log("Getting latest objects Created by Service", names.Service)
resources, err := GetResourceObjects(clients, *names)
if err == nil {
t.Log("Successfully created Service", names.Service)
}
return resources, err
}
// CreateLatestService creates a service in namespace with the name names.Service and names.Image
func CreateLatestService(t pkgTest.T, clients *test.Clients, names test.ResourceNames, fopt ...rtesting.ServiceOption) (*v1alpha1.Service, error) {
service := LatestService(names, fopt...)
LogResourceObject(t, ResourceObjects{Service: service})
svc, err := clients.ServingAlphaClient.Services.Create(service)
return svc, err
}
// CreateLatestServiceLegacy creates a service in namespace with the name names.Service and names.Image
func CreateLatestServiceLegacy(t pkgTest.T, clients *test.Clients, names test.ResourceNames, fopt ...rtesting.ServiceOption) (*v1alpha1.Service, error) {
service := LatestServiceLegacy(names, fopt...)
LogResourceObject(t, ResourceObjects{Service: service})
svc, err := clients.ServingAlphaClient.Services.Create(service)
return svc, err
}
// PatchServiceImage patches the existing service passed in with a new imagePath. Returns the latest service object
func PatchServiceImage(t pkgTest.T, clients *test.Clients, svc *v1alpha1.Service, imagePath string) (*v1alpha1.Service, error) {
newSvc := svc.DeepCopy()
if svc.Spec.DeprecatedRunLatest != nil {
newSvc.Spec.DeprecatedRunLatest.Configuration.GetTemplate().Spec.GetContainer().Image = imagePath
} else if svc.Spec.DeprecatedRelease != nil {
newSvc.Spec.DeprecatedRelease.Configuration.GetTemplate().Spec.GetContainer().Image = imagePath
} else if svc.Spec.DeprecatedPinned != nil {
newSvc.Spec.DeprecatedPinned.Configuration.GetTemplate().Spec.GetContainer().Image = imagePath
} else {
newSvc.Spec.ConfigurationSpec.GetTemplate().Spec.GetContainer().Image = imagePath
}
LogResourceObject(t, ResourceObjects{Service: newSvc})
patchBytes, err := duck.CreateBytePatch(svc, newSvc)
if err != nil {
return nil, err
}
return clients.ServingAlphaClient.Services.Patch(svc.ObjectMeta.Name, types.JSONPatchType, patchBytes, "")
}
// PatchService creates and applies a patch from the diff between curSvc and desiredSvc. Returns the latest service object.
func PatchService(t pkgTest.T, clients *test.Clients, curSvc *v1alpha1.Service, desiredSvc *v1alpha1.Service) (*v1alpha1.Service, error) {
LogResourceObject(t, ResourceObjects{Service: desiredSvc})
patchBytes, err := duck.CreateBytePatch(curSvc, desiredSvc)
if err != nil {
return nil, err
}
return clients.ServingAlphaClient.Services.Patch(curSvc.ObjectMeta.Name, types.JSONPatchType, patchBytes, "")
}
// UpdateServiceRouteSpec updates a service to use the route name in names.
func UpdateServiceRouteSpec(t pkgTest.T, clients *test.Clients, names test.ResourceNames, rs v1alpha1.RouteSpec) (*v1alpha1.Service, error) {
patches := []jsonpatch.JsonPatchOperation{{
Operation: "replace",
Path: "/spec/traffic",
Value: rs.Traffic,
}}
patchBytes, err := json.Marshal(patches)
if err != nil {
return nil, err
}
return clients.ServingAlphaClient.Services.Patch(names.Service, types.JSONPatchType, patchBytes, "")
}
// PatchServiceTemplateMetadata patches an existing service by adding metadata to the service's RevisionTemplateSpec.
func PatchServiceTemplateMetadata(t pkgTest.T, clients *test.Clients, svc *v1alpha1.Service, metadata metav1.ObjectMeta) (*v1alpha1.Service, error) {
newSvc := svc.DeepCopy()
newSvc.Spec.ConfigurationSpec.Template.ObjectMeta = metadata
LogResourceObject(t, ResourceObjects{Service: newSvc})
patchBytes, err := duck.CreateBytePatch(svc, newSvc)
if err != nil {
return nil, err
}
return clients.ServingAlphaClient.Services.Patch(svc.ObjectMeta.Name, types.JSONPatchType, patchBytes, "")
}
// WaitForServiceLatestRevision takes a revision in through names and compares it to the current state of LatestCreatedRevisionName in Service.
// Once an update is detected in the LatestCreatedRevisionName, the function waits for the created revision to be set in LatestReadyRevisionName
// before returning the name of the revision.
func WaitForServiceLatestRevision(clients *test.Clients, names test.ResourceNames) (string, error) {
var revisionName string
if err := WaitForServiceState(clients.ServingAlphaClient, names.Service, func(s *v1alpha1.Service) (bool, error) {
if s.Status.LatestCreatedRevisionName != names.Revision {
revisionName = s.Status.LatestCreatedRevisionName
// We also check that the revision is pinned, meaning it's not a stale revision.
// Without this it might happen that the latest created revision is later overridden by a newer one
// and the following check for LatestReadyRevisionName would fail.
if revErr := CheckRevisionState(clients.ServingAlphaClient, revisionName, IsRevisionPinned); revErr != nil {
return false, nil
}
return true, nil
}
return false, nil
}, "ServiceUpdatedWithRevision"); err != nil {
return "", fmt.Errorf("LatestCreatedRevisionName not updated: %w", err)
}
if err := WaitForServiceState(clients.ServingAlphaClient, names.Service, func(s *v1alpha1.Service) (bool, error) {
return (s.Status.LatestReadyRevisionName == revisionName), nil
}, "ServiceReadyWithRevision"); err != nil {
return "", fmt.Errorf("LatestReadyRevisionName not updated with %s: %w", revisionName, err)
}
return revisionName, nil
}
// LatestService returns a Service object in namespace with the name names.Service
// that uses the image specified by names.Image.
func LatestService(names test.ResourceNames, fopt ...rtesting.ServiceOption) *v1alpha1.Service {
a := append([]rtesting.ServiceOption{
rtesting.WithInlineConfigSpec(*ConfigurationSpec(pkgTest.ImagePath(names.Image))),
}, fopt...)
return rtesting.ServiceWithoutNamespace(names.Service, a...)
}
// LatestServiceLegacy returns a DeprecatedRunLatest Service object in namespace with the name names.Service
// that uses the image specified by names.Image.
func LatestServiceLegacy(names test.ResourceNames, fopt ...rtesting.ServiceOption) *v1alpha1.Service {
a := append([]rtesting.ServiceOption{
rtesting.WithRunLatestConfigSpec(*LegacyConfigurationSpec(pkgTest.ImagePath(names.Image))),
}, fopt...)
svc := rtesting.ServiceWithoutNamespace(names.Service, a...)
// Clear the name, which is put there by defaulting.
svc.Spec.DeprecatedRunLatest.Configuration.GetTemplate().Spec.GetContainer().Name = ""
return svc
}
// WaitForServiceState polls the status of the Service called name
// from client every `PollInterval` until `inState` returns `true` indicating it
// is done, returns an error or PollTimeout. desc will be used to name the metric
// that is emitted to track how long it took for name to get into the state checked by inState.
func WaitForServiceState(client *test.ServingAlphaClients, name string, inState func(s *v1alpha1.Service) (bool, error), desc string) error {
span := logging.GetEmitableSpan(context.Background(), fmt.Sprintf("WaitForServiceState/%s/%s", name, desc))
defer span.End()
var lastState *v1alpha1.Service
waitErr := wait.PollImmediate(test.PollInterval, test.PollTimeout, func() (bool, error) {
var err error
lastState, err = client.Services.Get(name, metav1.GetOptions{})
if err != nil {
return true, err
}
return inState(lastState)
})
if waitErr != nil {
return fmt.Errorf("service %q is not in desired state, got: %#v: %w", name, lastState, waitErr)
}
return nil
}
// CheckServiceState verifies the status of the Service called name from client
// is in a particular state by calling `inState` and expecting `true`.
// This is the non-polling variety of WaitForServiceState.
func CheckServiceState(client *test.ServingAlphaClients, name string, inState func(s *v1alpha1.Service) (bool, error)) error {
s, err := client.Services.Get(name, metav1.GetOptions{})
if err != nil {
return err
}
if done, err := inState(s); err != nil {
return err
} else if !done {
return fmt.Errorf("service %q is not in desired state, got: %#v", name, s)
}
return nil
}
// IsServiceReady will check the status conditions of the service and return true if the service is
// ready. This means that its configurations and routes have all reported ready.
func IsServiceReady(s *v1alpha1.Service) (bool, error) {
return s.Generation == s.Status.ObservedGeneration && s.Status.IsReady(), nil
}
// IsServiceNotReady checks the Ready status condition of the service and returns true only if Ready is set to False.
func IsServiceNotReady(s *v1alpha1.Service) (bool, error) {
result := s.Status.GetCondition(v1alpha1.ServiceConditionReady)
return s.Generation == s.Status.ObservedGeneration && result != nil && result.Status == corev1.ConditionFalse, nil
}
// IsServiceRoutesNotReady checks the RoutesReady status of the service and returns true only if RoutesReady is set to False.
func IsServiceRoutesNotReady(s *v1alpha1.Service) (bool, error) {
result := s.Status.GetCondition(v1alpha1.ServiceConditionRoutesReady)
return s.Generation == s.Status.ObservedGeneration && result != nil && result.Status == corev1.ConditionFalse, nil
}
// generateCertificate generates a self-signed certificate for the provided host and returns
// the PEM encoded certificate and private key.
func generateCertificate(host string) ([]byte, []byte, error) {
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return nil, nil, fmt.Errorf("failed to generate private key: %v", err)
}
notBefore := time.Now().Add(-5 * time.Minute)
notAfter := notBefore.Add(2 * time.Hour)
serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
if err != nil {
return nil, nil, fmt.Errorf("failed to generate serial number: %v", err)
}
template := x509.Certificate{
SerialNumber: serialNumber,
Subject: pkix.Name{
Organization: []string{"Knative Serving"},
},
NotBefore: notBefore,
NotAfter: notAfter,
KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
BasicConstraintsValid: true,
}
if ip := net.ParseIP(host); ip != nil {
template.IPAddresses = append(template.IPAddresses, ip)
} else {
template.DNSNames = append(template.DNSNames, host)
}
derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
if err != nil {
return nil, nil, fmt.Errorf("failed to create the certificate: %v", err)
}
var certBuf bytes.Buffer
if err := pem.Encode(&certBuf, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
return nil, nil, fmt.Errorf("failed to encode the certificate: %v", err)
}
var keyBuf bytes.Buffer
if err := pem.Encode(&keyBuf, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)}); err != nil {
return nil, nil, fmt.Errorf("failed to encode the private key: %v", err)
}
return certBuf.Bytes(), keyBuf.Bytes(), nil
}