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b1a4590967
There is no release for sigs.k8s.io/controller-runtime that supports Kubernetes v1.27. The main branch has all the required modifications, so we can use that for the time being. Signed-off-by: Niels de Vos <ndevos@ibm.com>
83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package admission
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import (
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"context"
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"encoding/json"
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"net/http"
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admissionv1 "k8s.io/api/admission/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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)
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// Defaulter defines functions for setting defaults on resources.
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type Defaulter interface {
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runtime.Object
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Default()
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}
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// DefaultingWebhookFor creates a new Webhook for Defaulting the provided type.
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func DefaultingWebhookFor(scheme *runtime.Scheme, defaulter Defaulter) *Webhook {
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return &Webhook{
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Handler: &mutatingHandler{defaulter: defaulter, decoder: NewDecoder(scheme)},
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}
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}
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type mutatingHandler struct {
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defaulter Defaulter
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decoder *Decoder
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}
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// Handle handles admission requests.
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func (h *mutatingHandler) Handle(ctx context.Context, req Request) Response {
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if h.decoder == nil {
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panic("decoder should never be nil")
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}
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if h.defaulter == nil {
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panic("defaulter should never be nil")
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}
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// always skip when a DELETE operation received in mutation handler
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// describe in https://github.com/kubernetes-sigs/controller-runtime/issues/1762
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if req.Operation == admissionv1.Delete {
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return Response{AdmissionResponse: admissionv1.AdmissionResponse{
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Allowed: true,
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Result: &metav1.Status{
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Code: http.StatusOK,
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},
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}}
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}
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// Get the object in the request
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obj := h.defaulter.DeepCopyObject().(Defaulter)
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if err := h.decoder.Decode(req, obj); err != nil {
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return Errored(http.StatusBadRequest, err)
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}
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// Default the object
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obj.Default()
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marshalled, err := json.Marshal(obj)
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if err != nil {
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return Errored(http.StatusInternalServerError, err)
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}
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// Create the patch
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return PatchResponseFromRaw(req.Object.Raw, marshalled)
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}
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