/
request.go
58 lines (49 loc) · 2.03 KB
/
request.go
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// Copyright 2021 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// Licensed 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 crddeletionprotection
import (
"context"
"fmt"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
)
// ExtractRequestObject extracts the object in the admission request and returns it.
// The given `ListOption` is used to list affected objects in case of a `DELETECOLLECTION` request.
func ExtractRequestObject(ctx context.Context, reader client.Reader, decoder *admission.Decoder, request admission.Request, listOp client.ListOption) (runtime.Object, error) {
var (
obj runtime.Object
err error
)
switch {
// DELETECOLLECTION requests don't contain the entire object list.
// Lookup all existing objects of that gvk.
case request.Name == "":
o := &unstructured.UnstructuredList{}
o.SetAPIVersion(request.Kind.Group + "/" + request.Kind.Version)
o.SetKind(request.Kind.Kind + "List")
err = reader.List(ctx, o, listOp)
obj = o
case request.OldObject.Raw != nil:
obj = &unstructured.Unstructured{}
err = decoder.DecodeRaw(request.OldObject, obj)
case request.Object.Raw != nil:
obj = &unstructured.Unstructured{}
err = decoder.DecodeRaw(request.Object, obj)
default:
err = fmt.Errorf("no object found in admission request")
}
return obj, err
}