71 lines
2.2 KiB
Go
71 lines
2.2 KiB
Go
/*
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Copyright 2020 The cert-manager 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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"fmt"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/runtime/serializer"
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"k8s.io/utils/ptr"
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)
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// decoder knows how to decode the contents of an admission
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// request into a concrete object.
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type internalDecoder struct {
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scheme *runtime.Scheme
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codecs serializer.CodecFactory
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}
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// DecodeRaw decodes a RawExtension object.
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// It errors out if rawObj is empty i.e. containing 0 raw bytes.
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func (d *internalDecoder) DecodeRaw(rawObj runtime.RawExtension, rawKind schema.GroupVersionKind) (runtime.Object, error) {
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// we error out if rawObj is an empty object.
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if len(rawObj.Raw) == 0 {
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return nil, fmt.Errorf("there is no content to decode")
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}
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obj, gvk, err := d.codecs.UniversalDeserializer().Decode(rawObj.Raw, ptr.To(rawKind), nil)
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if err != nil {
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return nil, err
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}
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if obj.GetObjectKind().GroupVersionKind().Empty() && gvk != nil {
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obj.GetObjectKind().SetGroupVersionKind(*gvk)
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}
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return d.scheme.UnsafeConvertToVersion(obj, runtime.InternalGroupVersioner)
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}
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// DecodeRawUnstructured decodes a RawExtension object into an unstructured object.
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func DecodeRawUnstructured(rawObj runtime.RawExtension, rawKind schema.GroupVersionKind) (*unstructured.Unstructured, error) {
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if len(rawObj.Raw) == 0 {
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return nil, fmt.Errorf("there is no content to decode")
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}
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obj := &unstructured.Unstructured{}
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if err := obj.UnmarshalJSON(rawObj.Raw); err != nil {
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return nil, err
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}
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if obj.GetObjectKind().GroupVersionKind().Empty() {
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obj.GetObjectKind().SetGroupVersionKind(rawKind)
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}
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return obj, nil
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}
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