add new kindnet controller

cmd/kindnet-controller/main.go

@@ -0,0 +1,65 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"log"
+	"os"
+	"os/signal"
+
+	"golang.org/x/sys/unix"
+
+	"k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/rest"
+	"k8s.io/klog/v2"
+
+	configv1alpha1 "github.com/aojea/kindnet/apis/generated/clientset/versioned/typed/config/v1alpha1"
+)
+
+func main() {
+	// enable logging
+	klog.InitFlags(nil)
+	_ = flag.Set("logtostderr", "true")
+
+	flag.Parse()
+	flag.VisitAll(func(flag *flag.Flag) {
+		log.Printf("FLAG: --%s=%q", flag.Name, flag.Value)
+	})
+
+	// trap Ctrl+C and call cancel on the context
+	ctx := context.Background()
+	ctx, cancel := context.WithCancel(ctx)
+
+	// Enable signal handler
+	signalCh := make(chan os.Signal, 2)
+	defer func() {
+		close(signalCh)
+		cancel()
+	}()
+	signal.Notify(signalCh, os.Interrupt, unix.SIGINT)
+
+	// create a Kubernetes client
+	config, err := rest.InClusterConfig()
+	if err != nil {
+		panic(err.Error())
+	}
+	config.UserAgent = "kindnet-controller"
+	crdConfig := config // shallow copy because  CRDs does not support proto
+	// use protobuf for better performance at scale
+	// https://kubernetes.io/docs/reference/using-api/api-concepts/#alternate-representations-of-resources
+	// npaConfig := config // shallow copy because  CRDs does not support proto
+	config.AcceptContentTypes = "application/vnd.kubernetes.protobuf,application/json"
+	config.ContentType = "application/vnd.kubernetes.protobuf"
+
+	// creates the clientset
+	clientset, err := kubernetes.NewForConfig(config)
+	if err != nil {
+		panic(err.Error())
+	}
+	// creates the clientset
+	crdClientset, err := configv1alpha1.NewForConfig(crdConfig)
+	if err != nil {
+		panic(err.Error())
+	}
+
+}