mirror of
https://github.com/ceph/ceph-csi.git
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5af3fe5deb
this commits add the controller runtime and its dependency to the vendor. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
76 lines
1.8 KiB
Go
76 lines
1.8 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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"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(defaulter Defaulter) *Webhook {
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return &Webhook{
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Handler: &mutatingHandler{defaulter: defaulter},
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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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var _ DecoderInjector = &mutatingHandler{}
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// InjectDecoder injects the decoder into a mutatingHandler.
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func (h *mutatingHandler) InjectDecoder(d *Decoder) error {
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h.decoder = d
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return nil
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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.defaulter == nil {
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panic("defaulter should never be nil")
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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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err := h.decoder.Decode(req, obj)
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if 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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