feat: webhook not use klog

build/test.Dockerfile

@@ -1,4 +1,4 @@
-FROM naison/kubevpn:test
+FROM naison/kubevpn:v1.1.19
 
 WORKDIR /app
 

cmd/kubevpn/cmds/webhook.go

@@ -4,6 +4,7 @@ import (
 	"github.com/spf13/cobra"
 	cmdutil "k8s.io/kubectl/pkg/cmd/util"
 
+	"github.com/wencaiwulue/kubevpn/pkg/util"
 	"github.com/wencaiwulue/kubevpn/pkg/webhook"
 )
 
@@ -15,6 +16,9 @@ func CmdWebhook(f cmdutil.Factory) *cobra.Command {
 After deploying it to Kubernetes cluster, the Administrator needs to create a MutatingWebhookConfiguration
 in the Kubernetes cluster to register remote webhook admission controllers.`,
 		Args: cobra.MaximumNArgs(0),
+		PreRun: func(cmd *cobra.Command, args []string) {
+			util.InitLogger(true)
+		},
 		RunE: func(cmd *cobra.Command, args []string) error {
 			return webhook.Main(f)
 		},

pkg/handler/envoy.go

@@ -76,8 +76,12 @@ func InjectVPNAndEnvoySidecar(ctx1 context.Context, factory cmdutil.Factory, cli
 	}
 	// (1) add mesh container
 	removePatch, restorePatch := patch(*origin, path)
-	b, _ := json.Marshal(restorePatch)
-	mesh.AddMeshContainer(templateSpec, namespace, nodeID, c)
+	var b []byte
+	b, err = json.Marshal(restorePatch)
+	if err != nil {
+		return err
+	}
+	mesh.AddMeshContainer(templateSpec, nodeID, c)
 	helper := pkgresource.NewHelper(object.Client, object.Mapping)
 	ps := []P{
 		{

pkg/mesh/controller.go

@@ -21,7 +21,7 @@ func RemoveContainers(spec *v1.PodTemplateSpec) {
 	}
 }
 
-func AddMeshContainer(spec *v1.PodTemplateSpec, ns, nodeId string, c util.PodRouteConfig) {
+func AddMeshContainer(spec *v1.PodTemplateSpec, nodeId string, c util.PodRouteConfig) {
 	// remove envoy proxy containers if already exist
 	RemoveContainers(spec)
 	spec.Spec.ServiceAccountName = config.ConfigMapPodTrafficManager

pkg/webhook/mutateadmissionwebhook.go

@@ -5,14 +5,14 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"os"
 
+	log "github.com/sirupsen/logrus"
 	v1 "k8s.io/api/admission/v1"
 	"k8s.io/api/admission/v1beta1"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/klog/v2"
 	cmdutil "k8s.io/kubectl/pkg/cmd/util"
 )
 
@@ -53,7 +53,7 @@ func delegateV1beta1AdmitToV1(f admitv1Func) admitv1beta1Func {
 func serve(w http.ResponseWriter, r *http.Request, admit admitHandler) {
 	var body []byte
 	if r.Body != nil {
-		if data, err := ioutil.ReadAll(r.Body); err == nil {
+		if data, err := io.ReadAll(r.Body); err == nil {
 			body = data
 		}
 	}
@@ -61,17 +61,17 @@ func serve(w http.ResponseWriter, r *http.Request, admit admitHandler) {
 	// verify the content type is accurate
 	contentType := r.Header.Get("Content-Type")
 	if contentType != "application/json" {
-		klog.Errorf("contentType=%s, expect application/json", contentType)
+		log.Errorf("contentType=%s, expect application/json", contentType)
 		return
 	}
 
-	klog.V(2).Info(fmt.Sprintf("handling request: %s", body))
+	log.Infof("handling request: %s", body)
 
 	deserializer := codecs.UniversalDeserializer()
 	obj, gvk, err := deserializer.Decode(body, nil, nil)
 	if err != nil {
 		msg := fmt.Sprintf("Request could not be decoded: %v", err)
-		klog.Error(msg)
+		log.Error(msg)
 		http.Error(w, msg, http.StatusBadRequest)
 		return
 	}
@@ -81,7 +81,7 @@ func serve(w http.ResponseWriter, r *http.Request, admit admitHandler) {
 	case v1beta1.SchemeGroupVersion.WithKind("AdmissionReview"):
 		requestedAdmissionReview, ok := obj.(*v1beta1.AdmissionReview)
 		if !ok {
-			klog.Errorf("Expected v1beta1.AdmissionReview but got: %T", obj)
+			log.Errorf("Expected v1beta1.AdmissionReview but got: %T", obj)
 			return
 		}
 		responseAdmissionReview := &v1beta1.AdmissionReview{}
@@ -92,7 +92,7 @@ func serve(w http.ResponseWriter, r *http.Request, admit admitHandler) {
 	case v1.SchemeGroupVersion.WithKind("AdmissionReview"):
 		requestedAdmissionReview, ok := obj.(*v1.AdmissionReview)
 		if !ok {
-			klog.Errorf("Expected v1.AdmissionReview but got: %T", obj)
+			log.Errorf("Expected v1.AdmissionReview but got: %T", obj)
 			return
 		}
 		responseAdmissionReview := &v1.AdmissionReview{}
@@ -102,21 +102,21 @@ func serve(w http.ResponseWriter, r *http.Request, admit admitHandler) {
 		responseObj = responseAdmissionReview
 	default:
 		msg := fmt.Sprintf("Unsupported group version kind: %v", gvk)
-		klog.Error(msg)
+		log.Error(msg)
 		http.Error(w, msg, http.StatusBadRequest)
 		return
 	}
 
-	klog.V(2).Info(fmt.Sprintf("sending response: %v", responseObj))
+	log.Infof("sending response: %v", responseObj)
 	respBytes, err := json.Marshal(responseObj)
 	if err != nil {
-		klog.Error(err)
+		log.Error(err)
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 	w.Header().Set("Content-Type", "application/json")
 	if _, err := w.Write(respBytes); err != nil {
-		klog.Error(err)
+		log.Error(err)
 	}
 }
 

pkg/webhook/pods.go

@@ -6,10 +6,12 @@ import (
 	"net"
 
 	"github.com/mattbaird/jsonpatch"
+	log "github.com/sirupsen/logrus"
 	"k8s.io/api/admission/v1"
 	corev1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/klog/v2"
+	"k8s.io/client-go/kubernetes"
 	"k8s.io/kubectl/pkg/cmd/util/podcmd"
 
 	"github.com/wencaiwulue/kubevpn/pkg/config"
@@ -18,26 +20,30 @@ import (
 
 // only allow pods to pull images from specific registry.
 func (h *admissionReviewHandler) admitPods(ar v1.AdmissionReview) *v1.AdmissionResponse {
-	klog.V(2).Info("admitting pods")
+	r, _ := json.Marshal(ar)
+	log.Infof("admitting pods called, req: %v", string(r))
 	podResource := metav1.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"}
 	if ar.Request.Resource != podResource {
-		err := fmt.Errorf("expect resource to be %s", podResource)
-		klog.Error(err)
-		return toV1AdmissionResponse(err)
-	}
-
-	raw := ar.Request.Object.Raw
-	pod := corev1.Pod{}
-
-	deserializer := codecs.UniversalDeserializer()
-	if _, _, err := deserializer.Decode(raw, nil, &pod); err != nil {
-		klog.Error(err)
+		err := fmt.Errorf("expect resource to be %s but real %s", podResource, ar.Request.Resource)
+		log.Error(err)
 		return toV1AdmissionResponse(err)
 	}
 
 	switch ar.Request.Operation {
 	case v1.Create:
-		from, _ := json.Marshal(pod)
+		raw := ar.Request.Object.Raw
+		pod := corev1.Pod{}
+		deserializer := codecs.UniversalDeserializer()
+		if _, _, err := deserializer.Decode(raw, nil, &pod); err != nil {
+			log.Errorf("can not decode into pod, err: %v, raw: %s", err, string(raw))
+			return toV1AdmissionResponse(err)
+		}
+
+		from, err := json.Marshal(pod)
+		if err != nil {
+			log.Errorf("can not marshal into pod, err: %v", err)
+			return toV1AdmissionResponse(err)
+		}
 		var found bool
 		for i := 0; i < len(pod.Spec.Containers); i++ {
 			if pod.Spec.Containers[i].Name == config.ContainerSidecarVPN {
@@ -45,27 +51,50 @@ func (h *admissionReviewHandler) admitPods(ar v1.AdmissionReview) *v1.AdmissionR
 					pair := pod.Spec.Containers[i].Env[j]
 					if pair.Name == config.EnvInboundPodTunIP && pair.Value == "" {
 						found = true
-						clientset, err := h.f.KubernetesClientSet()
+						var clientset *kubernetes.Clientset
+						clientset, err = h.f.KubernetesClientSet()
 						if err != nil {
-							klog.Error(err)
+							log.Errorf("can not get clientset, err: %v", err)
 							return toV1AdmissionResponse(err)
 						}
 						cmi := clientset.CoreV1().ConfigMaps(ar.Request.Namespace)
 						dhcp := handler.NewDHCPManager(cmi, ar.Request.Namespace, &net.IPNet{IP: config.RouterIP, Mask: config.CIDR.Mask})
-						random, err := dhcp.RentIPRandom()
+						var random *net.IPNet
+						random, err = dhcp.RentIPRandom()
 						if err != nil {
-							klog.Error(err)
+							log.Errorf("rent ip random failed, err: %v", err)
 							return toV1AdmissionResponse(err)
 						}
+						var name string
+						if accessor, errT := meta.Accessor(ar.Request.Object); errT == nil {
+							name = accessor.GetName()
+						}
+
+						log.Infof("rent ip %s for pod %s in namespace: %s", random.String(), name, ar.Request.Namespace)
 						pod.Spec.Containers[i].Env[j].Value = random.String()
 					}
 				}
 			}
 		}
 		if found {
-			to, _ := json.Marshal(pod)
-			patch, _ := jsonpatch.CreatePatch(from, to)
-			marshal, _ := json.Marshal(patch)
+			var to []byte
+			to, err = json.Marshal(pod)
+			if err != nil {
+				log.Errorf("can not marshal pod, err: %v", err)
+				return toV1AdmissionResponse(err)
+			}
+			var patch []jsonpatch.JsonPatchOperation
+			patch, err = jsonpatch.CreatePatch(from, to)
+			if err != nil {
+				log.Errorf("can not create patch json, err: %v", err)
+				return toV1AdmissionResponse(err)
+			}
+			var marshal []byte
+			marshal, err = json.Marshal(patch)
+			if err != nil {
+				log.Errorf("can not marshal json patch %v, err: %v", patch, err)
+				return toV1AdmissionResponse(err)
+			}
 			return applyPodPatch(
 				ar,
 				func(pod *corev1.Pod) bool {
@@ -76,18 +105,28 @@ func (h *admissionReviewHandler) admitPods(ar v1.AdmissionReview) *v1.AdmissionR
 			)
 		}
 		return &v1.AdmissionResponse{
+			UID:     ar.Request.UID,
 			Allowed: true,
 		}
 	case v1.Delete:
+		raw := ar.Request.OldObject.Raw
+		pod := corev1.Pod{}
+		deserializer := codecs.UniversalDeserializer()
+		if _, _, err := deserializer.Decode(raw, nil, &pod); err != nil {
+			log.Errorf("can not decode into pod, err: %v, raw: %s", err, string(raw))
+			return toV1AdmissionResponse(err)
+		}
+
 		name, _ := podcmd.FindContainerByName(&pod, config.ContainerSidecarVPN)
 		if name != nil {
 			for _, envVar := range name.Env {
 				if envVar.Name == config.EnvInboundPodTunIP && envVar.Value != "" {
 					ip, cidr, err := net.ParseCIDR(envVar.Value)
 					if err == nil {
-						clientset, err := h.f.KubernetesClientSet()
+						var clientset *kubernetes.Clientset
+						clientset, err = h.f.KubernetesClientSet()
 						if err != nil {
-							klog.Error(err)
+							log.Errorf("can not get clientset, err: %v", err)
 							return toV1AdmissionResponse(err)
 						}
 						cmi := clientset.CoreV1().ConfigMaps(ar.Request.Namespace)
@@ -97,7 +136,9 @@ func (h *admissionReviewHandler) admitPods(ar v1.AdmissionReview) *v1.AdmissionR
 						}
 						err = handler.NewDHCPManager(cmi, ar.Request.Namespace, &net.IPNet{IP: config.RouterIP, Mask: config.CIDR.Mask}).ReleaseIpToDHCP(ipnet)
 						if err != nil {
-							klog.V(1).Infof("release ip to dhcp err: %v", err)
+							log.Errorf("release ip to dhcp err: %v, ip: %s", err, envVar.Value)
+						} else {
+							log.Errorf("release ip to dhcp ok, ip: %s", envVar.Value)
 						}
 					}
 				}
@@ -109,16 +150,17 @@ func (h *admissionReviewHandler) admitPods(ar v1.AdmissionReview) *v1.AdmissionR
 		}
 	default:
 		err := fmt.Errorf("expect operation is %s or %s, not %s", v1.Create, v1.Delete, ar.Request.Operation)
-		klog.Error(err)
+		log.Error(err)
 		return toV1AdmissionResponse(err)
 	}
 }
 
 func applyPodPatch(ar v1.AdmissionReview, shouldPatchPod func(*corev1.Pod) bool, patch string) *v1.AdmissionResponse {
-	klog.V(2).Info("mutating pods")
+	r, _ := json.Marshal(ar)
+	log.Infof("mutating pods called, req: %s", string(r))
 	podResource := metav1.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"}
 	if ar.Request.Resource != podResource {
-		klog.Errorf("expect resource to be %s", podResource)
+		log.Errorf("expect resource to be %s but real is %s", podResource, ar.Request.Resource)
 		return nil
 	}
 
@@ -126,7 +168,7 @@ func applyPodPatch(ar v1.AdmissionReview, shouldPatchPod func(*corev1.Pod) bool,
 	pod := corev1.Pod{}
 	deserializer := codecs.UniversalDeserializer()
 	if _, _, err := deserializer.Decode(raw, nil, &pod); err != nil {
-		klog.Error(err)
+		log.Errorf("can not decode request into pod, err: %v, req: %s", err, string(raw))
 		return toV1AdmissionResponse(err)
 	}
 	reviewResponse := v1.AdmissionResponse{}