mirror of https://github.com/k3s-io/k3s
77 lines
2.1 KiB
Go
77 lines
2.1 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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 runtime
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import (
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"encoding/json"
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"io"
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"k8s.io/kubernetes/pkg/api/unversioned"
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)
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// UnstructuredJSONScheme is capable of converting JSON data into the Unstructured
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// type, which can be used for generic access to objects without a predefined scheme.
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// TODO: move into serializer/json.
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var UnstructuredJSONScheme Codec = unstructuredJSONScheme{}
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type unstructuredJSONScheme struct{}
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func (s unstructuredJSONScheme) Decode(data []byte, _ *unversioned.GroupVersionKind, _ Object) (Object, *unversioned.GroupVersionKind, error) {
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unstruct := &Unstructured{}
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m := make(map[string]interface{})
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if err := json.Unmarshal(data, &m); err != nil {
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return nil, nil, err
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}
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if v, ok := m["kind"]; ok {
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if s, ok := v.(string); ok {
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unstruct.Kind = s
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}
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}
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if v, ok := m["apiVersion"]; ok {
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if s, ok := v.(string); ok {
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unstruct.APIVersion = s
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}
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}
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if len(unstruct.APIVersion) == 0 {
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return nil, nil, NewMissingVersionErr(string(data))
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}
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gv, err := unversioned.ParseGroupVersion(unstruct.APIVersion)
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if err != nil {
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return nil, nil, err
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}
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gvk := gv.WithKind(unstruct.Kind)
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if len(unstruct.Kind) == 0 {
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return nil, &gvk, NewMissingKindErr(string(data))
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}
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unstruct.Object = m
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return unstruct, &gvk, nil
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}
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func (s unstructuredJSONScheme) EncodeToStream(obj Object, w io.Writer, overrides ...unversioned.GroupVersion) error {
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switch t := obj.(type) {
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case *Unstructured:
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return json.NewEncoder(w).Encode(t.Object)
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case *Unknown:
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_, err := w.Write(t.RawJSON)
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return err
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default:
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return json.NewEncoder(w).Encode(t)
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}
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}
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