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internal.go
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internal.go
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/*
*
* * Copyright 2021 KubeClipper 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 internal
import (
"time"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/tools/cache"
"github.com/kubeclipper/kubeclipper/pkg/client/clientset"
)
type NewInformerFunc func(clientset.Interface, time.Duration) cache.SharedIndexInformer
type SharedInformerFactory interface {
Start(stopCh <-chan struct{})
InformerFor(obj runtime.Object, newFunc NewInformerFunc) cache.SharedIndexInformer
}
func NewProxyWatcher(w watch.Interface, cacheSize int) watch.Interface {
ch := make(chan watch.Event, cacheSize)
s := watch.NewProxyWatcher(ch)
go func() {
defer w.Stop()
for {
select {
case <-s.StopChan():
return
case event, ok := <-w.ResultChan():
if !ok {
return
}
e := watch.Event{
Type: event.Type,
}
obj := event.Object
if co, ok := obj.(runtime.CacheableObject); ok {
e.Object = co.GetObject()
} else {
e.Object = event.Object
}
if s.Stopping() {
return
}
ch <- e
}
}
}()
return s
}