-
Notifications
You must be signed in to change notification settings - Fork 810
/
wrapper.go
529 lines (483 loc) · 14.8 KB
/
wrapper.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
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
package ingress
import (
"context"
"errors"
"sort"
"sync"
corev1 "k8s.io/api/core/v1"
"k8s.io/api/extensions/v1beta1"
v1 "k8s.io/api/networking/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
types "k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/client-go/informers"
extensionsv1beta1 "k8s.io/client-go/informers/extensions/v1beta1"
networkingv1 "k8s.io/client-go/informers/networking/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/cache"
"github.com/argoproj/argo-rollouts/pkg/apis/rollouts/v1alpha1"
)
// Ingress defines an Ingress resource abstraction used to allow Rollouts to
// work with the newer 'networking' package as well as with the legacy extensions
// package.
type Ingress struct {
ingress *v1.Ingress
legacyIngress *v1beta1.Ingress
mode IngressMode
mux *sync.Mutex
}
// NewIngress will instantiate and return an Ingress with the given
// Ingress from networking/v1 package
func NewIngress(i *v1.Ingress) *Ingress {
return &Ingress{
ingress: i,
mode: IngressModeNetworking,
mux: &sync.Mutex{},
}
}
// NewLegacyIngress will instantiate and return an Ingress with the given
// Ingress from extensions/v1beta1 package
func NewLegacyIngress(li *v1beta1.Ingress) *Ingress {
return &Ingress{
legacyIngress: li,
mode: IngressModeExtensions,
mux: &sync.Mutex{},
}
}
func NewIngressWithAnnotations(mode IngressMode, annotations map[string]string) *Ingress {
switch mode {
case IngressModeNetworking:
i := &v1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Annotations: annotations,
},
}
return NewIngress(i)
case IngressModeExtensions:
i := &v1beta1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Annotations: annotations,
},
}
return NewLegacyIngress(i)
default:
return nil
}
}
func NewIngressWithSpecAndAnnotations(ingress *Ingress, annotations map[string]string) *Ingress {
switch ingress.mode {
case IngressModeNetworking:
i := &v1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Annotations: annotations,
},
Spec: *ingress.ingress.Spec.DeepCopy(),
}
return NewIngress(i)
case IngressModeExtensions:
i := &v1beta1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Annotations: annotations,
},
Spec: *ingress.legacyIngress.Spec.DeepCopy(),
}
return NewLegacyIngress(i)
default:
return nil
}
}
func (i *Ingress) GetExtensionsIngress() (*v1beta1.Ingress, error) {
if i.legacyIngress == nil {
return nil, errors.New("extensions Ingress is nil in this wrapper")
}
return i.legacyIngress, nil
}
func (i *Ingress) GetNetworkingIngress() (*v1.Ingress, error) {
if i.ingress == nil {
return nil, errors.New("networking Ingress is nil in this wrapper")
}
return i.ingress, nil
}
func (i *Ingress) GetAnnotations() map[string]string {
i.mux.Lock()
defer i.mux.Unlock()
switch i.mode {
case IngressModeNetworking:
return i.ingress.GetAnnotations()
case IngressModeExtensions:
return i.legacyIngress.GetAnnotations()
default:
return make(map[string]string)
}
}
// GetClass returns the ingress class.
// For backwards compatibility `kubernetes.io/ingress.class` annotation will be used if set,
// otherwise `spec.ingressClassName` is used.
func (i *Ingress) GetClass() string {
annotations := i.GetAnnotations()
class := annotations["kubernetes.io/ingress.class"]
if class == "" {
switch i.mode {
case IngressModeNetworking:
if c := i.ingress.Spec.IngressClassName; c != nil {
class = *c
}
case IngressModeExtensions:
if c := i.legacyIngress.Spec.IngressClassName; c != nil {
class = *c
}
}
}
return class
}
func (i *Ingress) GetLabels() map[string]string {
switch i.mode {
case IngressModeNetworking:
return i.ingress.GetLabels()
case IngressModeExtensions:
return i.legacyIngress.GetLabels()
default:
return make(map[string]string)
}
}
func (i *Ingress) GetObjectMeta() metav1.Object {
switch i.mode {
case IngressModeNetworking:
return i.ingress.GetObjectMeta()
case IngressModeExtensions:
return i.legacyIngress.GetObjectMeta()
default:
return nil
}
}
func (i *Ingress) SetAnnotations(annotations map[string]string) {
i.mux.Lock()
defer i.mux.Unlock()
switch i.mode {
case IngressModeNetworking:
i.ingress.SetAnnotations(annotations)
case IngressModeExtensions:
i.legacyIngress.SetAnnotations(annotations)
}
}
func (i *Ingress) CreateAnnotationBasedPath(actionName string) {
i.mux.Lock()
defer i.mux.Unlock()
if HasRuleWithService(i, actionName) {
return
}
switch i.mode {
case IngressModeNetworking:
t := v1.PathTypeImplementationSpecific
p := v1.HTTPIngressPath{
Path: "/*",
PathType: &t,
Backend: v1.IngressBackend{
Service: &v1.IngressServiceBackend{
Name: actionName,
Port: v1.ServiceBackendPort{
Name: "use-annotation",
},
},
},
}
for _, rule := range i.ingress.Spec.Rules {
rule.HTTP.Paths = append(rule.HTTP.Paths[:1], rule.HTTP.Paths[0:]...)
rule.HTTP.Paths[0] = p
}
case IngressModeExtensions:
t := v1beta1.PathTypeImplementationSpecific
p := v1beta1.HTTPIngressPath{
Path: "/*",
PathType: &t,
Backend: v1beta1.IngressBackend{
ServiceName: actionName,
ServicePort: intstr.FromString("use-annotation"),
},
}
for _, rule := range i.legacyIngress.Spec.Rules {
rule.HTTP.Paths = append(rule.HTTP.Paths[:1], rule.HTTP.Paths[0:]...)
rule.HTTP.Paths[0] = p
}
}
}
func (i *Ingress) RemovePathByServiceName(actionName string) {
i.mux.Lock()
defer i.mux.Unlock()
switch i.mode {
case IngressModeNetworking:
for _, rule := range i.ingress.Spec.Rules {
if j := indexPathByService(rule, actionName); j != -1 {
rule.HTTP.Paths = append(rule.HTTP.Paths[:j], rule.HTTP.Paths[j+1:]...)
}
}
case IngressModeExtensions:
for _, rule := range i.legacyIngress.Spec.Rules {
if j := indexLegacyPathByService(rule, actionName); j != -1 {
rule.HTTP.Paths = append(rule.HTTP.Paths[:j], rule.HTTP.Paths[j+1:]...)
}
}
}
}
func (i *Ingress) SortHttpPaths(routes []v1alpha1.MangedRoutes) {
var routeWeight = make(map[string]int) // map of route name for ordering
for j, route := range routes {
routeWeight[route.Name] = j
}
i.mux.Lock()
defer i.mux.Unlock()
switch i.mode {
case IngressModeNetworking:
for _, rule := range i.ingress.Spec.Rules {
sort.SliceStable(rule.HTTP.Paths, func(i, j int) bool {
return getKeyWeight(routeWeight, rule.HTTP.Paths[i].Backend.Service.Name) < getKeyWeight(routeWeight, rule.HTTP.Paths[j].Backend.Service.Name)
})
}
case IngressModeExtensions:
for _, rule := range i.legacyIngress.Spec.Rules {
sort.SliceStable(rule.HTTP.Paths, func(i, j int) bool {
return getKeyWeight(routeWeight, rule.HTTP.Paths[i].Backend.ServiceName) < getKeyWeight(routeWeight, rule.HTTP.Paths[j].Backend.ServiceName)
})
}
}
}
func getKeyWeight(weight map[string]int, key string) int {
if val, ok := weight[key]; ok {
return val
} else {
return len(weight)
}
}
func indexPathByService(rule v1.IngressRule, name string) int {
for i, path := range rule.HTTP.Paths {
if path.Backend.Service.Name == name {
return i
}
}
return -1
}
func indexLegacyPathByService(rule v1beta1.IngressRule, name string) int {
for i, path := range rule.HTTP.Paths {
if path.Backend.ServiceName == name {
return i
}
}
return -1
}
func (i *Ingress) DeepCopy() *Ingress {
switch i.mode {
case IngressModeNetworking:
ing := i.ingress.DeepCopy()
return NewIngress(ing)
case IngressModeExtensions:
ing := i.legacyIngress.DeepCopy()
return NewLegacyIngress(ing)
default:
return nil
}
}
func (i *Ingress) GetName() string {
switch i.mode {
case IngressModeNetworking:
return i.ingress.GetName()
case IngressModeExtensions:
return i.legacyIngress.GetName()
default:
return ""
}
}
func (i *Ingress) GetNamespace() string {
switch i.mode {
case IngressModeNetworking:
return i.ingress.GetNamespace()
case IngressModeExtensions:
return i.legacyIngress.GetNamespace()
default:
return ""
}
}
func (i *Ingress) GetLoadBalancerStatus() corev1.LoadBalancerStatus {
switch i.mode {
case IngressModeNetworking:
return i.ingress.Status.LoadBalancer
case IngressModeExtensions:
return i.legacyIngress.Status.LoadBalancer
default:
return corev1.LoadBalancerStatus{}
}
}
func (i *Ingress) Mode() IngressMode {
return i.mode
}
// IngressWrap wraps the two ingress informers provided by the client-go. This is used
// to centralize the ingress informer operations to allow Rollouts to interact with
// both versions.
type IngressWrap struct {
client kubernetes.Interface
mode IngressMode
ingressInformer networkingv1.IngressInformer
legacyIngressInformer extensionsv1beta1.IngressInformer
}
type IngressMode int
const (
IngressModeExtensions IngressMode = iota + 1 // start iota with 1 to avoid having this as default value
IngressModeNetworking
)
func NewIngressWrapper(mode IngressMode, client kubernetes.Interface, informerFactory informers.SharedInformerFactory) (*IngressWrap, error) {
var ingressInformer networkingv1.IngressInformer
var legacyIngressInformer extensionsv1beta1.IngressInformer
switch mode {
case IngressModeNetworking:
ingressInformer = informerFactory.Networking().V1().Ingresses()
case IngressModeExtensions:
legacyIngressInformer = informerFactory.Extensions().V1beta1().Ingresses()
default:
return nil, errors.New("error creating ingress wrapper: undefined ingress mode")
}
return &IngressWrap{
client: client,
mode: mode,
ingressInformer: ingressInformer,
legacyIngressInformer: legacyIngressInformer,
}, nil
}
func (w *IngressWrap) Informer() cache.SharedIndexInformer {
switch w.mode {
case IngressModeNetworking:
return w.ingressInformer.Informer()
case IngressModeExtensions:
return w.legacyIngressInformer.Informer()
default:
return nil
}
}
func (w *IngressWrap) Patch(ctx context.Context, namespace, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (*Ingress, error) {
switch w.mode {
case IngressModeNetworking:
return w.patch(ctx, namespace, name, pt, data, opts, subresources...)
case IngressModeExtensions:
return w.patchLegacy(ctx, namespace, name, pt, data, opts, subresources...)
default:
return nil, errors.New("ingress patch error: undefined ingress mode")
}
}
func (w *IngressWrap) patch(ctx context.Context, namespace, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (*Ingress, error) {
i, err := w.client.NetworkingV1().Ingresses(namespace).Patch(ctx, name, pt, data, opts, subresources...)
if err != nil {
return nil, err
}
return NewIngress(i), nil
}
func (w *IngressWrap) patchLegacy(ctx context.Context, namespace, name string, pt types.PatchType, data []byte, opts metav1.PatchOptions, subresources ...string) (*Ingress, error) {
li, err := w.client.ExtensionsV1beta1().Ingresses(namespace).Patch(ctx, name, pt, data, opts, subresources...)
if err != nil {
return nil, err
}
return NewLegacyIngress(li), nil
}
func (w *IngressWrap) Update(ctx context.Context, namespace string, ingress *Ingress) (*Ingress, error) {
switch w.mode {
case IngressModeNetworking:
return w.update(ctx, namespace, ingress)
case IngressModeExtensions:
return w.legacyUpdate(ctx, namespace, ingress)
default:
return nil, errors.New("error updating ingress: undefined ingress mode")
}
}
func (w *IngressWrap) update(ctx context.Context, namespace string, ingress *Ingress) (*Ingress, error) {
i, err := w.client.NetworkingV1().Ingresses(namespace).Update(ctx, ingress.ingress, metav1.UpdateOptions{})
if err != nil {
return nil, err
}
return NewIngress(i), nil
}
func (w *IngressWrap) legacyUpdate(ctx context.Context, namespace string, ingress *Ingress) (*Ingress, error) {
li, err := w.client.ExtensionsV1beta1().Ingresses(namespace).Update(ctx, ingress.legacyIngress, metav1.UpdateOptions{})
if err != nil {
return nil, err
}
return NewLegacyIngress(li), nil
}
func (w *IngressWrap) Get(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*Ingress, error) {
switch w.mode {
case IngressModeNetworking:
return w.get(ctx, namespace, name, opts)
case IngressModeExtensions:
return w.getLegacy(ctx, namespace, name, opts)
default:
return nil, errors.New("error running IngressWrap.Get: undefined ingress mode")
}
}
func (w *IngressWrap) get(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*Ingress, error) {
ing, err := w.client.NetworkingV1().Ingresses(namespace).Get(ctx, name, opts)
if err != nil {
return nil, err
}
return NewIngress(ing), nil
}
func (w *IngressWrap) getLegacy(ctx context.Context, namespace, name string, opts metav1.GetOptions) (*Ingress, error) {
ing, err := w.client.ExtensionsV1beta1().Ingresses(namespace).Get(ctx, name, opts)
if err != nil {
return nil, err
}
return NewLegacyIngress(ing), nil
}
func (w *IngressWrap) GetCached(namespace, name string) (*Ingress, error) {
switch w.mode {
case IngressModeNetworking:
return w.getCached(namespace, name)
case IngressModeExtensions:
return w.getCachedLegacy(namespace, name)
default:
return nil, errors.New("error running IngressWrap.GetCached: undefined ingress mode")
}
}
func (w *IngressWrap) getCached(namespace, name string) (*Ingress, error) {
ing, err := w.ingressInformer.Lister().Ingresses(namespace).Get(name)
if err != nil {
return nil, err
}
return NewIngress(ing), nil
}
func (w *IngressWrap) getCachedLegacy(namespace, name string) (*Ingress, error) {
li, err := w.legacyIngressInformer.Lister().Ingresses(namespace).Get(name)
if err != nil {
return nil, err
}
return NewLegacyIngress(li), nil
}
func (w *IngressWrap) Create(ctx context.Context, namespace string, ingress *Ingress, opts metav1.CreateOptions) (*Ingress, error) {
switch w.mode {
case IngressModeNetworking:
return w.create(ctx, namespace, ingress.ingress, opts)
case IngressModeExtensions:
return w.createLegacy(ctx, namespace, ingress.legacyIngress, opts)
default:
return nil, errors.New("error creating ingress: undefined ingress mode")
}
}
func (w *IngressWrap) create(ctx context.Context, namespace string, ingress *v1.Ingress, opts metav1.CreateOptions) (*Ingress, error) {
i, err := w.client.NetworkingV1().Ingresses(namespace).Create(ctx, ingress, opts)
if err != nil {
return nil, err
}
return NewIngress(i), nil
}
func (w *IngressWrap) createLegacy(ctx context.Context, namespace string, ingress *v1beta1.Ingress, opts metav1.CreateOptions) (*Ingress, error) {
li, err := w.client.ExtensionsV1beta1().Ingresses(namespace).Create(ctx, ingress, opts)
if err != nil {
return nil, err
}
return NewLegacyIngress(li), nil
}
func (w *IngressWrap) HasSynced() bool {
switch w.mode {
case IngressModeNetworking:
return w.ingressInformer.Informer().HasSynced()
case IngressModeExtensions:
return w.legacyIngressInformer.Informer().HasSynced()
default:
return false
}
}