| /* |
| Copyright 2014 The Kubernetes Authors. |
| |
| 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 json |
| |
| import ( |
| "encoding/json" |
| "fmt" |
| |
| "k8s.io/apimachinery/pkg/runtime/schema" |
| ) |
| |
| // MetaFactory is used to store and retrieve the version and kind |
| // information for JSON objects in a serializer. |
| type MetaFactory interface { |
| // Interpret should return the version and kind of the wire-format of |
| // the object. |
| Interpret(data []byte) (*schema.GroupVersionKind, error) |
| } |
| |
| // DefaultMetaFactory is a default factory for versioning objects in JSON. The object |
| // in memory and in the default JSON serialization will use the "kind" and "apiVersion" |
| // fields. |
| var DefaultMetaFactory = SimpleMetaFactory{} |
| |
| // SimpleMetaFactory provides default methods for retrieving the type and version of objects |
| // that are identified with an "apiVersion" and "kind" fields in their JSON |
| // serialization. It may be parameterized with the names of the fields in memory, or an |
| // optional list of base structs to search for those fields in memory. |
| type SimpleMetaFactory struct { |
| } |
| |
| // Interpret will return the APIVersion and Kind of the JSON wire-format |
| // encoding of an object, or an error. |
| func (SimpleMetaFactory) Interpret(data []byte) (*schema.GroupVersionKind, error) { |
| findKind := struct { |
| // +optional |
| APIVersion string `json:"apiVersion,omitempty"` |
| // +optional |
| Kind string `json:"kind,omitempty"` |
| }{} |
| if err := json.Unmarshal(data, &findKind); err != nil { |
| return nil, fmt.Errorf("couldn't get version/kind; json parse error: %v", err) |
| } |
| gv, err := schema.ParseGroupVersion(findKind.APIVersion) |
| if err != nil { |
| return nil, err |
| } |
| return &schema.GroupVersionKind{Group: gv.Group, Version: gv.Version, Kind: findKind.Kind}, nil |
| } |