-
Notifications
You must be signed in to change notification settings - Fork 577
/
broker.go
539 lines (474 loc) · 21.6 KB
/
broker.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
530
531
532
533
534
535
536
537
538
539
/*
Copyright 2018 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.
*/
package broker
import (
"context"
"fmt"
"reflect"
"time"
"go.uber.org/zap"
v1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/equality"
apierrs "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic"
appsv1listers "k8s.io/client-go/listers/apps/v1"
corev1listers "k8s.io/client-go/listers/core/v1"
"k8s.io/client-go/tools/cache"
"knative.dev/pkg/apis"
duckapis "knative.dev/pkg/apis/duck"
"knative.dev/pkg/controller"
duckv1alpha1 "knative.dev/eventing/pkg/apis/duck/v1alpha1"
"knative.dev/eventing/pkg/apis/eventing/v1alpha1"
messagingv1alpha1 "knative.dev/eventing/pkg/apis/messaging/v1alpha1"
eventinglisters "knative.dev/eventing/pkg/client/listers/eventing/v1alpha1"
messaginglisters "knative.dev/eventing/pkg/client/listers/messaging/v1alpha1"
"knative.dev/eventing/pkg/duck"
"knative.dev/eventing/pkg/logging"
"knative.dev/eventing/pkg/reconciler"
"knative.dev/eventing/pkg/reconciler/broker/resources"
"knative.dev/eventing/pkg/reconciler/names"
)
const (
// Name of the corev1.Events emitted from the reconciliation process.
brokerReadinessChanged = "BrokerReadinessChanged"
brokerReconcileError = "BrokerReconcileError"
brokerUpdateStatusFailed = "BrokerUpdateStatusFailed"
ingressSubscriptionDeleteFailed = "IngressSubscriptionDeleteFailed"
ingressSubscriptionCreateFailed = "IngressSubscriptionCreateFailed"
ingressSubscriptionGetFailed = "IngressSubscriptionGetFailed"
)
type Reconciler struct {
*reconciler.Base
// listers index properties about resources
brokerLister eventinglisters.BrokerLister
serviceLister corev1listers.ServiceLister
deploymentLister appsv1listers.DeploymentLister
subscriptionLister messaginglisters.SubscriptionLister
channelableTracker duck.ListableTracker
ingressImage string
ingressServiceAccountName string
filterImage string
filterServiceAccountName string
}
// Check that our Reconciler implements controller.Reconciler
var _ controller.Reconciler = (*Reconciler)(nil)
// ReconcilerArgs are the arguments needed to create a broker.Reconciler.
type ReconcilerArgs struct {
IngressImage string
IngressServiceAccountName string
FilterImage string
FilterServiceAccountName string
}
// Reconcile compares the actual state with the desired, and attempts to
// converge the two. It then updates the Status block of the Broker resource
// with the current status of the resource.
func (r *Reconciler) Reconcile(ctx context.Context, key string) error {
// Convert the namespace/name string into a distinct namespace and name
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
logging.FromContext(ctx).Error("invalid resource key")
return nil
}
// Get the Broker resource with this namespace/name
original, err := r.brokerLister.Brokers(namespace).Get(name)
if apierrs.IsNotFound(err) {
// The resource may no longer exist, in which case we stop processing.
logging.FromContext(ctx).Info("broker key in work queue no longer exists")
return nil
} else if err != nil {
return err
}
// Don't modify the informers copy
broker := original.DeepCopy()
// Reconcile this copy of the Broker and then write back any status
// updates regardless of whether the reconcile error out.
reconcileErr := r.reconcile(ctx, broker)
if reconcileErr != nil {
logging.FromContext(ctx).Warn("Error reconciling Broker", zap.Error(reconcileErr))
r.Recorder.Eventf(broker, corev1.EventTypeWarning, brokerReconcileError, fmt.Sprintf("Broker reconcile error: %v", reconcileErr))
} else {
logging.FromContext(ctx).Debug("Broker reconciled")
}
if _, updateStatusErr := r.updateStatus(ctx, broker); updateStatusErr != nil {
logging.FromContext(ctx).Warn("Failed to update the Broker status", zap.Error(updateStatusErr))
r.Recorder.Eventf(broker, corev1.EventTypeWarning, brokerUpdateStatusFailed, "Failed to update Broker's status: %v", updateStatusErr)
return updateStatusErr
}
// Requeue if the resource is not ready:
return reconcileErr
}
func (r *Reconciler) reconcile(ctx context.Context, b *v1alpha1.Broker) error {
logging.FromContext(ctx).Debug("Reconciling", zap.Any("Broker", b))
b.Status.InitializeConditions()
// 1. Trigger Channel is created for all events. Triggers will Subscribe to this Channel.
// 2. Filter Deployment.
// 3. Ingress Deployment.
// 4. K8s Services that point at the Deployments.
// 5. Ingress Channel is created to get events from Triggers back into this Broker via the
// Ingress Deployment.
// - Ideally this wouldn't exist and we would point the Trigger's reply directly to the K8s
// Service. However, Subscriptions only allow us to send replies to Channels, so we need
// this as an intermediary.
// 6. Subscription from the Ingress Channel to the Ingress Service.
if b.DeletionTimestamp != nil {
// Everything is cleaned up by the garbage collector.
return nil
}
if b.Spec.ChannelTemplate == nil {
r.Logger.Error("Broker.Spec.ChannelTemplate is nil",
zap.String("namespace", b.Namespace), zap.String("name", b.Name))
return nil
}
gvr, _ := meta.UnsafeGuessKindToResource(b.Spec.ChannelTemplate.GetObjectKind().GroupVersionKind())
channelResourceInterface := r.DynamicClientSet.Resource(gvr).Namespace(b.Namespace)
if channelResourceInterface == nil {
return fmt.Errorf("unable to create dynamic client for: %+v", b.Spec.ChannelTemplate)
}
track := r.channelableTracker.TrackInNamespace(b)
triggerChannelName := resources.BrokerChannelName(b.Name, "trigger")
triggerChannelObjRef := corev1.ObjectReference{
Kind: b.Spec.ChannelTemplate.Kind,
APIVersion: b.Spec.ChannelTemplate.APIVersion,
Name: triggerChannelName,
Namespace: b.Namespace,
}
// Start tracking the trigger channel.
if err := track(triggerChannelObjRef); err != nil {
return fmt.Errorf("unable to track changes to the trigger Channel: %v", err)
}
logging.FromContext(ctx).Info("Reconciling the trigger channel")
triggerChan, err := r.reconcileTriggerChannel(ctx, channelResourceInterface, triggerChannelObjRef, b)
if err != nil {
logging.FromContext(ctx).Error("Problem reconciling the trigger channel", zap.Error(err))
b.Status.MarkTriggerChannelFailed("ChannelFailure", "%v", err)
return err
}
if triggerChan.Status.Address == nil {
logging.FromContext(ctx).Debug("Trigger Channel does not have an address", zap.Any("triggerChan", triggerChan))
b.Status.MarkTriggerChannelFailed("NoAddress", "Channel does not have an address.")
return nil
}
if url := triggerChan.Status.Address.GetURL(); url.Host == "" {
// We check the trigger Channel's address here because it is needed to create the Ingress Deployment.
logging.FromContext(ctx).Debug("Trigger Channel does not have an address", zap.Any("triggerChan", triggerChan))
b.Status.MarkTriggerChannelFailed("NoAddress", "Channel does not have an address.")
return nil
}
b.Status.TriggerChannel = &triggerChannelObjRef
b.Status.PropagateTriggerChannelReadiness(&triggerChan.Status)
filterDeployment, err := r.reconcileFilterDeployment(ctx, b)
if err != nil {
logging.FromContext(ctx).Error("Problem reconciling filter Deployment", zap.Error(err))
b.Status.MarkFilterFailed("DeploymentFailure", "%v", err)
return err
}
_, err = r.reconcileFilterService(ctx, b)
if err != nil {
logging.FromContext(ctx).Error("Problem reconciling filter Service", zap.Error(err))
b.Status.MarkFilterFailed("ServiceFailure", "%v", err)
return err
}
b.Status.PropagateFilterDeploymentAvailability(filterDeployment)
ingressDeployment, err := r.reconcileIngressDeployment(ctx, b, triggerChan)
if err != nil {
logging.FromContext(ctx).Error("Problem reconciling ingress Deployment", zap.Error(err))
b.Status.MarkIngressFailed("DeploymentFailure", "%v", err)
return err
}
svc, err := r.reconcileIngressService(ctx, b)
if err != nil {
logging.FromContext(ctx).Error("Problem reconciling ingress Service", zap.Error(err))
b.Status.MarkIngressFailed("ServiceFailure", "%v", err)
return err
}
b.Status.PropagateIngressDeploymentAvailability(ingressDeployment)
b.Status.SetAddress(&apis.URL{
Scheme: "http",
Host: names.ServiceHostName(svc.Name, svc.Namespace),
})
ingressChannelName := resources.BrokerChannelName(b.Name, "ingress")
ingressChannelObjRef := corev1.ObjectReference{
Kind: b.Spec.ChannelTemplate.Kind,
APIVersion: b.Spec.ChannelTemplate.APIVersion,
Name: ingressChannelName,
Namespace: b.Namespace,
}
// Start tracking the ingress channel.
if err = track(ingressChannelObjRef); err != nil {
return fmt.Errorf("unable to track changes to the ingress Channel: %v", err)
}
ingressChan, err := r.reconcileIngressChannel(ctx, channelResourceInterface, ingressChannelObjRef, b)
if err != nil {
logging.FromContext(ctx).Error("Problem reconciling the ingress channel", zap.Error(err))
b.Status.MarkIngressChannelFailed("ChannelFailure", "%v", err)
return err
}
b.Status.IngressChannel = &ingressChannelObjRef
b.Status.PropagateIngressChannelReadiness(&ingressChan.Status)
ingressSub, err := r.reconcileIngressSubscription(ctx, b, ingressChan, svc)
if err != nil {
logging.FromContext(ctx).Error("Problem reconciling the ingress subscription", zap.Error(err))
b.Status.MarkIngressSubscriptionFailed("SubscriptionFailure", "%v", err)
return err
}
b.Status.PropagateIngressSubscriptionReadiness(&ingressSub.Status)
return nil
}
func (r *Reconciler) updateStatus(ctx context.Context, desired *v1alpha1.Broker) (*v1alpha1.Broker, error) {
broker, err := r.brokerLister.Brokers(desired.Namespace).Get(desired.Name)
if err != nil {
return nil, err
}
// If there's nothing to update, just return.
if reflect.DeepEqual(broker.Status, desired.Status) {
return broker, nil
}
becomesReady := desired.Status.IsReady() && !broker.Status.IsReady()
// Don't modify the informers copy.
existing := broker.DeepCopy()
existing.Status = desired.Status
b, err := r.EventingClientSet.EventingV1alpha1().Brokers(desired.Namespace).UpdateStatus(existing)
if err == nil && becomesReady {
duration := time.Since(b.ObjectMeta.CreationTimestamp.Time)
logging.FromContext(ctx).Sugar().Infof("Broker %q became ready after %v", broker.Name, duration)
r.Recorder.Event(broker, corev1.EventTypeNormal, brokerReadinessChanged, fmt.Sprintf("Broker %q became ready", broker.Name))
if err := r.StatsReporter.ReportReady("Broker", broker.Namespace, broker.Name, duration); err != nil {
logging.FromContext(ctx).Sugar().Infof("failed to record ready for Broker, %v", err)
}
}
return b, err
}
// reconcileFilterDeployment reconciles Broker's 'b' filter deployment.
func (r *Reconciler) reconcileFilterDeployment(ctx context.Context, b *v1alpha1.Broker) (*v1.Deployment, error) {
expected := resources.MakeFilterDeployment(&resources.FilterArgs{
Broker: b,
Image: r.filterImage,
ServiceAccountName: r.filterServiceAccountName,
})
return r.reconcileDeployment(ctx, expected)
}
// reconcileFilterService reconciles Broker's 'b' filter service.
func (r *Reconciler) reconcileFilterService(ctx context.Context, b *v1alpha1.Broker) (*corev1.Service, error) {
expected := resources.MakeFilterService(b)
return r.reconcileService(ctx, expected)
}
func newTriggerChannel(b *v1alpha1.Broker) (*unstructured.Unstructured, error) {
return resources.NewChannel("trigger", b, TriggerChannelLabels(b.Name))
}
func newIngressChannel(b *v1alpha1.Broker) (*unstructured.Unstructured, error) {
return resources.NewChannel("ingress", b, IngressChannelLabels(b.Name))
}
func (r *Reconciler) reconcileTriggerChannel(ctx context.Context, channelResourceInterface dynamic.ResourceInterface, channelObjRef corev1.ObjectReference, b *v1alpha1.Broker) (*duckv1alpha1.Channelable, error) {
c, err := newTriggerChannel(b)
if err != nil {
logging.FromContext(ctx).Error(fmt.Sprintf("Failed to create Trigger Channel object: %s/%s", channelObjRef.Namespace, channelObjRef.Name), zap.Error(err))
return nil, err
}
return r.reconcileChannel(ctx, channelResourceInterface, channelObjRef, c, b)
}
func (r *Reconciler) reconcileIngressChannel(ctx context.Context, channelResourceInterface dynamic.ResourceInterface, channelObjRef corev1.ObjectReference, b *v1alpha1.Broker) (*duckv1alpha1.Channelable, error) {
c, err := newIngressChannel(b)
if err != nil {
return nil, err
}
return r.reconcileChannel(ctx, channelResourceInterface, channelObjRef, c, b)
}
// reconcileChannel reconciles Broker's 'b' underlying channel.
func (r *Reconciler) reconcileChannel(ctx context.Context, channelResourceInterface dynamic.ResourceInterface, channelObjRef corev1.ObjectReference, newChannel *unstructured.Unstructured, b *v1alpha1.Broker) (*duckv1alpha1.Channelable, error) {
lister, err := r.channelableTracker.ListerFor(channelObjRef)
if err != nil {
logging.FromContext(ctx).Error(fmt.Sprintf("Error getting lister for Channel: %s/%s", channelObjRef.Namespace, channelObjRef.Name), zap.Error(err))
return nil, err
}
c, err := lister.ByNamespace(channelObjRef.Namespace).Get(channelObjRef.Name)
// If the resource doesn't exist, we'll create it
if err != nil {
if apierrs.IsNotFound(err) {
logging.FromContext(ctx).Debug(fmt.Sprintf("Creating Channel Object: %+v", newChannel))
created, err := channelResourceInterface.Create(newChannel, metav1.CreateOptions{})
if err != nil {
logging.FromContext(ctx).Error(fmt.Sprintf("Failed to create Channel: %s/%s", channelObjRef.Namespace, channelObjRef.Name), zap.Error(err))
return nil, err
}
logging.FromContext(ctx).Info(fmt.Sprintf("Created Channel: %s/%s", channelObjRef.Namespace, channelObjRef.Name), zap.Any("NewChannel", newChannel))
channelable := &duckv1alpha1.Channelable{}
err = duckapis.FromUnstructured(created, channelable)
if err != nil {
logging.FromContext(ctx).Error(fmt.Sprintf("Failed to convert to Channelable Object: %s/%s", channelObjRef.Namespace, channelObjRef.Name), zap.Any("createdChannel", created), zap.Error(err))
return nil, err
}
return channelable, nil
}
logging.FromContext(ctx).Error(fmt.Sprintf("Failed to get Channel: %s/%s", channelObjRef.Namespace, channelObjRef.Name), zap.Error(err))
return nil, err
}
logging.FromContext(ctx).Debug(fmt.Sprintf("Found Channel: %s/%s", channelObjRef.Namespace, channelObjRef.Name))
channelable, ok := c.(*duckv1alpha1.Channelable)
if !ok {
logging.FromContext(ctx).Error(fmt.Sprintf("Failed to convert to Channelable Object: %s/%s", channelObjRef.Namespace, channelObjRef.Name), zap.Error(err))
return nil, err
}
return channelable, nil
}
// TriggerChannelLabels are all the labels placed on the Trigger Channel for the given brokerName. This
// should only be used by Broker and Trigger code.
func TriggerChannelLabels(brokerName string) map[string]string {
return map[string]string{
"eventing.knative.dev/broker": brokerName,
"eventing.knative.dev/brokerEverything": "true",
}
}
// IngressChannelLabels are all the labels placed on the Ingress Channel for the given brokerName. This
// should only be used by Broker and Trigger code.
func IngressChannelLabels(brokerName string) map[string]string {
return map[string]string{
"eventing.knative.dev/broker": brokerName,
"eventing.knative.dev/brokerIngress": "true",
}
}
// reconcileDeployment reconciles the K8s Deployment 'd'.
func (r *Reconciler) reconcileDeployment(ctx context.Context, d *v1.Deployment) (*v1.Deployment, error) {
current, err := r.deploymentLister.Deployments(d.Namespace).Get(d.Name)
if apierrs.IsNotFound(err) {
current, err = r.KubeClientSet.AppsV1().Deployments(d.Namespace).Create(d)
if err != nil {
return nil, err
}
return current, nil
} else if err != nil {
return nil, err
}
if !equality.Semantic.DeepDerivative(d.Spec, current.Spec) {
// Don't modify the informers copy.
desired := current.DeepCopy()
desired.Spec = d.Spec
current, err = r.KubeClientSet.AppsV1().Deployments(current.Namespace).Update(desired)
if err != nil {
return nil, err
}
}
return current, nil
}
// reconcileService reconciles the K8s Service 'svc'.
func (r *Reconciler) reconcileService(ctx context.Context, svc *corev1.Service) (*corev1.Service, error) {
current, err := r.serviceLister.Services(svc.Namespace).Get(svc.Name)
if apierrs.IsNotFound(err) {
current, err = r.KubeClientSet.CoreV1().Services(svc.Namespace).Create(svc)
if err != nil {
return nil, err
}
return current, nil
} else if err != nil {
return nil, err
}
// spec.clusterIP is immutable and is set on existing services. If we don't set this to the same value, we will
// encounter an error while updating.
svc.Spec.ClusterIP = current.Spec.ClusterIP
if !equality.Semantic.DeepDerivative(svc.Spec, current.Spec) {
// Don't modify the informers copy.
desired := current.DeepCopy()
desired.Spec = svc.Spec
current, err = r.KubeClientSet.CoreV1().Services(current.Namespace).Update(desired)
if err != nil {
return nil, err
}
}
return current, nil
}
// reconcileIngressDeploymentCRD reconciles the Ingress Deployment for a CRD backed channel.
func (r *Reconciler) reconcileIngressDeployment(ctx context.Context, b *v1alpha1.Broker, c *duckv1alpha1.Channelable) (*v1.Deployment, error) {
expected := resources.MakeIngress(&resources.IngressArgs{
Broker: b,
Image: r.ingressImage,
ServiceAccountName: r.ingressServiceAccountName,
ChannelAddress: c.Status.Address.GetURL().Host,
})
return r.reconcileDeployment(ctx, expected)
}
// reconcileIngressService reconciles the Ingress Service.
func (r *Reconciler) reconcileIngressService(ctx context.Context, b *v1alpha1.Broker) (*corev1.Service, error) {
expected := resources.MakeIngressService(b)
return r.reconcileService(ctx, expected)
}
func (r *Reconciler) reconcileIngressSubscription(ctx context.Context, b *v1alpha1.Broker, c *duckv1alpha1.Channelable, svc *corev1.Service) (*messagingv1alpha1.Subscription, error) {
expected := resources.MakeSubscription(b, c, svc)
sub, err := r.subscriptionLister.Subscriptions(b.Namespace).Get(expected.Name)
// If the resource doesn't exist, we'll create it
if apierrs.IsNotFound(err) {
logging.FromContext(ctx).Info("Creating subscription")
sub, err = r.EventingClientSet.MessagingV1alpha1().Subscriptions(expected.Namespace).Create(expected)
if err != nil {
r.Recorder.Eventf(b, corev1.EventTypeWarning, ingressSubscriptionCreateFailed, "Broker's subscription create failed: %v", err)
return nil, err
}
return sub, nil
} else if err != nil {
logging.FromContext(ctx).Error("Failed to get subscription", zap.Error(err))
r.Recorder.Eventf(b, corev1.EventTypeWarning, ingressSubscriptionGetFailed, "Getting the Broker's Subscription failed: %v", err)
return nil, err
} else if !metav1.IsControlledBy(sub, b) {
b.Status.MarkIngressSubscriptionNotOwned(sub)
return nil, fmt.Errorf("broker %q does not own subscription %q", b.Name, sub.Name)
} else if sub, err = r.reconcileExistingIngressSubscription(ctx, b, expected, sub); err != nil {
return nil, err
}
return sub, nil
}
func (r *Reconciler) reconcileExistingIngressSubscription(ctx context.Context, b *v1alpha1.Broker, expected, actual *messagingv1alpha1.Subscription) (*messagingv1alpha1.Subscription, error) {
// Update Subscription if it has changed. Ignore the generation.
expected.Spec.DeprecatedGeneration = actual.Spec.DeprecatedGeneration
if equality.Semantic.DeepDerivative(expected.Spec, actual.Spec) {
return actual, nil
}
// Given that spec.channel is immutable, we cannot just update the subscription. We delete
// it instead, and re-create it.
err := r.EventingClientSet.MessagingV1alpha1().Subscriptions(b.Namespace).Delete(actual.Name, &metav1.DeleteOptions{})
if err != nil {
logging.FromContext(ctx).Info("Cannot delete subscription", zap.Error(err))
r.Recorder.Eventf(b, corev1.EventTypeWarning, ingressSubscriptionDeleteFailed, "Delete Broker Ingress' subscription failed: %v", err)
return nil, err
}
newSub, err := r.EventingClientSet.MessagingV1alpha1().Subscriptions(b.Namespace).Create(expected)
if err != nil {
logging.FromContext(ctx).Info("Cannot create subscription", zap.Error(err))
r.Recorder.Eventf(b, corev1.EventTypeWarning, ingressSubscriptionCreateFailed, "Create Broker Ingress' subscription failed: %v", err)
return nil, err
}
return newSub, nil
}
// getSubscription returns the first subscription controlled by Broker b
// otherwise it returns an error.
func (r *Reconciler) getIngressSubscription(ctx context.Context, b *v1alpha1.Broker) (*messagingv1alpha1.Subscription, error) {
subscriptions, err := r.subscriptionLister.Subscriptions(b.Namespace).List(labels.SelectorFromSet(ingressSubscriptionLabels(b.Name)))
if err != nil {
return nil, err
}
for _, s := range subscriptions {
if metav1.IsControlledBy(s, b) {
return s, nil
}
}
return nil, apierrs.NewNotFound(schema.GroupResource{}, "")
}
func ingressSubscriptionLabels(brokerName string) map[string]string {
return map[string]string{
"eventing.knative.dev/broker": brokerName,
"eventing.knative.dev/brokerIngress": "true",
}
}