64 lines
2.2 KiB
Go
64 lines
2.2 KiB
Go
|
/*
|
||
|
|
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
|
||
|
|
}
|