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refactor: start informers in one place
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| /* | ||
| Copyright 2022 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 azureutils | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| crdInformers "k8s.io/apiextensions-apiserver/pkg/client/informers/externalversions" | ||
| "k8s.io/client-go/informers" | ||
| "k8s.io/client-go/tools/cache" | ||
| "k8s.io/klog/v2" | ||
| azdiskinformers "sigs.k8s.io/azuredisk-csi-driver/pkg/apis/client/informers/externalversions" | ||
| ) | ||
|
|
||
| type GenericInformer interface { | ||
| Start(stopCh <-chan struct{}) | ||
| Informer() cache.SharedIndexInformer | ||
| } | ||
|
|
||
| type GenericAzInformerInfo struct { | ||
| factory azdiskinformers.SharedInformerFactory | ||
| informer cache.SharedIndexInformer | ||
| } | ||
|
|
||
| func (i *GenericAzInformerInfo) Start(stopCh <-chan struct{}) { | ||
| i.factory.Start(stopCh) | ||
| } | ||
|
|
||
| func (i *GenericAzInformerInfo) Informer() cache.SharedIndexInformer { | ||
| return i.informer | ||
| } | ||
|
|
||
| func NewAzNodeInformer(factory azdiskinformers.SharedInformerFactory) GenericInformer { | ||
| return &GenericAzInformerInfo{ | ||
| factory: factory, | ||
| informer: factory.Disk().V1beta2().AzDriverNodes().Informer(), | ||
| } | ||
| } | ||
|
|
||
| func NewAzVolumeAttachmentInformer(factory azdiskinformers.SharedInformerFactory) GenericInformer { | ||
| return &GenericAzInformerInfo{ | ||
| factory: factory, | ||
| informer: factory.Disk().V1beta2().AzVolumeAttachments().Informer(), | ||
| } | ||
| } | ||
|
|
||
| func NewAzVolumeInformer(factory azdiskinformers.SharedInformerFactory) GenericInformer { | ||
| return &GenericAzInformerInfo{ | ||
| factory: factory, | ||
| informer: factory.Disk().V1beta2().AzVolumes().Informer(), | ||
| } | ||
| } | ||
|
|
||
| type GenericKubeInformer struct { | ||
| factory informers.SharedInformerFactory | ||
| informer cache.SharedIndexInformer | ||
| } | ||
|
|
||
| func (i *GenericKubeInformer) Start(stopCh <-chan struct{}) { | ||
| i.factory.Start(stopCh) | ||
| } | ||
|
|
||
| func (i *GenericKubeInformer) Informer() cache.SharedIndexInformer { | ||
| return i.informer | ||
| } | ||
|
|
||
| func NewNodeInformer(factory informers.SharedInformerFactory) GenericInformer { | ||
| return &GenericKubeInformer{ | ||
| factory: factory, | ||
| informer: factory.Core().V1().Nodes().Informer(), | ||
| } | ||
| } | ||
|
|
||
| type GenericCrdInformer struct { | ||
| factory crdInformers.SharedInformerFactory | ||
| informer cache.SharedIndexInformer | ||
| } | ||
|
|
||
| func NewCrdInformer(factory crdInformers.SharedInformerFactory) GenericInformer { | ||
| return &GenericCrdInformer{ | ||
| factory: factory, | ||
| informer: factory.Apiextensions().V1().CustomResourceDefinitions().Informer(), | ||
| } | ||
| } | ||
|
|
||
| func (i *GenericCrdInformer) Start(stopCh <-chan struct{}) { | ||
| i.factory.Start(stopCh) | ||
| } | ||
|
|
||
| func (i *GenericCrdInformer) Informer() cache.SharedIndexInformer { | ||
| return i.informer | ||
| } | ||
|
|
||
| func StartInformersAndWaitForCacheSync(ctx context.Context, factories ...GenericInformer) { | ||
| informerSynced := make([]cache.InformerSynced, 0) | ||
| for _, factory := range factories { | ||
| factory.Start(ctx.Done()) | ||
| informerSynced = append(informerSynced, factory.Informer().HasSynced) | ||
| } | ||
|
|
||
| synced := cache.WaitForCacheSync(ctx.Done(), informerSynced...) | ||
| if !synced { | ||
| klog.Fatalf("Unable to sync caches") | ||
| } | ||
| } |
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