mirror of https://github.com/k3s-io/k3s
60 lines
1.9 KiB
Go
60 lines
1.9 KiB
Go
/*
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Copyright 2019 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 resource
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import (
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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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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/runtime/serializer/json"
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)
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// hold a single instance of the case-sensitive decoder
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var caseSensitiveJsonIterator = json.CaseSensitiveJSONIterator()
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// metadataValidatingDecoder wraps a decoder and additionally ensures metadata schema fields decode before returning an unstructured object
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type metadataValidatingDecoder struct {
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decoder runtime.Decoder
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}
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func (m *metadataValidatingDecoder) Decode(data []byte, defaults *schema.GroupVersionKind, into runtime.Object) (runtime.Object, *schema.GroupVersionKind, error) {
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obj, gvk, err := m.decoder.Decode(data, defaults, into)
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// if we already errored, return
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if err != nil {
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return obj, gvk, err
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}
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// if we're not unstructured, return
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if _, isUnstructured := obj.(runtime.Unstructured); !isUnstructured {
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return obj, gvk, err
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}
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// make sure the data can decode into ObjectMeta before we return,
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// so we don't silently truncate schema errors in metadata later with accesser get/set calls
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v := &metadataOnlyObject{}
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if typedErr := caseSensitiveJsonIterator.Unmarshal(data, v); typedErr != nil {
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return obj, gvk, typedErr
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}
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return obj, gvk, err
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}
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type metadataOnlyObject struct {
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metav1.TypeMeta `json:",inline"`
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metav1.ObjectMeta `json:"metadata,omitempty"`
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}
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