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main.go
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main.go
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package main
import (
"context"
"flag"
"os"
"github.com/sirupsen/logrus"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/klog/v2"
"github.com/ayanamist/k8s-utils/pkg/streamlister"
)
func main() {
klog.InitFlags(nil)
flag.Parse()
logger := logrus.StandardLogger()
config, err := clientcmd.BuildConfigFromFlags("", os.Getenv("KUBECONFIG"))
if err != nil {
logger.WithError(err).Fatal("clientcmd.BuildConfigFromFlags failed")
}
clientset, err := kubernetes.NewForConfig(config)
if err != nil {
logger.WithError(err).Fatal("kubernetes.NewForConfig failed")
}
podCh := make(chan *corev1.Pod, 5)
go func() {
defer close(podCh)
if err := streamlister.StreamList(context.Background(), clientset.CoreV1().RESTClient(), "pods", "", metav1.ListOptions{ResourceVersion: "0"}, streamlister.ParamFuncs{
ObjectFactoryFunc: func() runtime.Object {
return &corev1.Pod{}
},
OnListMetaFunc: func(listMeta *metav1.ListMeta) {
logger.Infof("rv=%s", listMeta.ResourceVersion)
},
OnObjectFunc: func(obj runtime.Object) {
pod := obj.(*corev1.Pod)
podCh <- pod
},
OnTypeMetaFunc: func(meta *metav1.TypeMeta) {
logger.Infof("typeMeta: %+v", meta)
},
}); err != nil {
logger.WithError(err).Fatal("streamlister.StreamList failed")
}
}()
var i int
for range podCh {
i++
}
logger.Infof("podList count=%d", i)
}