| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package webhooks |
| |
| import ( |
| "context" |
| "encoding/json" |
| "net/http" |
| ) |
| |
| import ( |
| kube_core "k8s.io/api/core/v1" |
| |
| kube_webhook "sigs.k8s.io/controller-runtime/pkg/webhook" |
| kube_admission "sigs.k8s.io/controller-runtime/pkg/webhook/admission" |
| ) |
| |
| type PodMutator func(context.Context, *kube_core.Pod) error |
| |
| func PodMutatingWebhook(mutator PodMutator) *kube_admission.Webhook { |
| return &kube_admission.Webhook{ |
| Handler: &podMutatingHandler{mutator: mutator}, |
| } |
| } |
| |
| type podMutatingHandler struct { |
| mutator PodMutator |
| } |
| |
| func (h *podMutatingHandler) Handle(ctx context.Context, req kube_webhook.AdmissionRequest) kube_webhook.AdmissionResponse { |
| var pod kube_core.Pod |
| if err := json.Unmarshal(req.Object.Raw, &pod); err != nil { |
| return kube_admission.Errored(http.StatusBadRequest, err) |
| } |
| pod.Namespace = req.Namespace |
| if err := h.mutator(ctx, &pod); err != nil { |
| return kube_admission.Errored(http.StatusInternalServerError, err) |
| } |
| mutatedRaw, err := json.Marshal(pod) |
| if err != nil { |
| return kube_admission.Errored(http.StatusInternalServerError, err) |
| } |
| return kube_admission.PatchResponseFromRaw(req.Object.Raw, mutatedRaw) |
| } |