forked from cisco-app-networking/networkservicemesh
/
webhookserver.go
45 lines (41 loc) · 1.22 KB
/
webhookserver.go
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package main
import (
"encoding/json"
"fmt"
"net/http"
"github.com/sirupsen/logrus"
"k8s.io/api/admission/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
type nsmAdmissionWebhook struct {
server *http.Server
}
func (s *nsmAdmissionWebhook) serve(w http.ResponseWriter, r *http.Request) {
body, err := readRequest(r)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
}
requestReview, err := parseAdmissionReview(body)
nsmAdmissionWebhookReview := v1beta1.AdmissionReview{}
if err != nil {
nsmAdmissionWebhookReview.Response = &v1beta1.AdmissionResponse{
Result: &metav1.Status{
Message: err.Error(),
},
}
} else {
if r.URL.Path == mutateMethod {
nsmAdmissionWebhookReview.Response = s.mutate(requestReview.Request)
}
}
nsmAdmissionWebhookReview.Response.UID = requestReview.Request.UID
resp, err := json.Marshal(nsmAdmissionWebhookReview)
if err != nil {
logrus.Errorf("Can't encode response: %v", err)
http.Error(w, fmt.Sprintf(couldNotEncodeReview, err), http.StatusInternalServerError)
}
if _, err := w.Write(resp); err != nil {
logrus.Errorf("Can't write response: %v", err)
http.Error(w, fmt.Sprintf(couldNotWriteReview, err), http.StatusInternalServerError)
}
}