53 lines
1.3 KiB
Go
53 lines
1.3 KiB
Go
package main
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import (
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"context"
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"flag"
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"log"
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"path/filepath"
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"k8s.io/client-go/informers"
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"k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/cache"
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"k8s.io/client-go/tools/clientcmd"
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"k8s.io/client-go/util/homedir"
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)
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func main() {
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var kubeconfig string
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flag.StringVar(&kubeconfig, "kubeconfig", filepath.Join(homedir.HomeDir(), ".kube", "config"), "(optional) absolute path to the kubeconfig file")
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flag.Parse()
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// use the current context in kubeconfig
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config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
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if err != nil {
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log.Fatal(err)
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}
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ctx := context.Background()
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AddPod := func(obj interface{}) {
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}
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DeletePod := func(obj interface{}) {
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}
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UpdatePod := func(oldObj, newObj interface{}) {
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}
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clientset := kubernetes.NewForConfigOrDie(config)
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// 基于GVK 操作资源，假设需要操作数十种不同资源时，我们需要为每一种资源实现各自的函数
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podInformer := informers.NewSharedInformerFactory(clientset, 0).
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Core().V1().Pods().Informer()
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podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
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AddFunc: AddPod,
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DeleteFunc: DeletePod,
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UpdateFunc: UpdatePod,
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})
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// 启动informer
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podInformer.Run(ctx.Done())
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cache.WaitForCacheSync(ctx.Done(), podInformer.HasSynced)
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// 此处没有使用workqueue，但一般都是会用workqueue 增强处理逻辑的
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}
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