mirror of https://github.com/k3s-io/k3s
120 lines
3.4 KiB
Go
120 lines
3.4 KiB
Go
/*
|
|
Copyright 2014 The Kubernetes Authors All rights reserved.
|
|
|
|
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 conversion
|
|
|
|
import (
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
)
|
|
|
|
func (s *Scheme) DecodeToVersionedObject(data []byte) (obj interface{}, version, kind string, err error) {
|
|
version, kind, err = s.DataVersionAndKind(data)
|
|
if err != nil {
|
|
return
|
|
}
|
|
if version == "" && s.InternalVersion != "" {
|
|
return nil, "", "", fmt.Errorf("version not set in '%s'", string(data))
|
|
}
|
|
if kind == "" {
|
|
return nil, "", "", fmt.Errorf("kind not set in '%s'", string(data))
|
|
}
|
|
obj, err = s.NewObject(version, kind)
|
|
if err != nil {
|
|
return nil, "", "", err
|
|
}
|
|
|
|
if err := json.Unmarshal(data, obj); err != nil {
|
|
return nil, "", "", err
|
|
}
|
|
return
|
|
}
|
|
|
|
// Decode converts a JSON string back into a pointer to an api object.
|
|
// Deduces the type based upon the fields added by the MetaInsertionFactory
|
|
// technique. The object will be converted, if necessary, into the
|
|
// s.InternalVersion type before being returned. Decode will not decode
|
|
// objects without version set unless InternalVersion is also "".
|
|
func (s *Scheme) Decode(data []byte) (interface{}, error) {
|
|
obj, version, kind, err := s.DecodeToVersionedObject(data)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
// Version and Kind should be blank in memory.
|
|
if err := s.SetVersionAndKind("", "", obj); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Convert if needed.
|
|
if s.InternalVersion != version {
|
|
objOut, err := s.NewObject(s.InternalVersion, kind)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
flags, meta := s.generateConvertMeta(version, s.InternalVersion, obj)
|
|
if err := s.converter.Convert(obj, objOut, flags, meta); err != nil {
|
|
return nil, err
|
|
}
|
|
obj = objOut
|
|
}
|
|
return obj, nil
|
|
}
|
|
|
|
// DecodeInto parses a JSON string and stores it in obj. Returns an error
|
|
// if data.Kind is set and doesn't match the type of obj. Obj should be a
|
|
// pointer to an api type.
|
|
// If obj's version doesn't match that in data, an attempt will be made to convert
|
|
// data into obj's version.
|
|
func (s *Scheme) DecodeInto(data []byte, obj interface{}) error {
|
|
if len(data) == 0 {
|
|
return errors.New("empty input")
|
|
}
|
|
dataVersion, dataKind, err := s.DataVersionAndKind(data)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
objVersion, objKind, err := s.ObjectVersionAndKind(obj)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if dataKind == "" {
|
|
// Assume objects with unset Kind fields are being unmarshalled into the
|
|
// correct type.
|
|
dataKind = objKind
|
|
}
|
|
if dataVersion == "" {
|
|
// Assume objects with unset Version fields are being unmarshalled into the
|
|
// correct type.
|
|
dataVersion = objVersion
|
|
}
|
|
|
|
external, err := s.NewObject(dataVersion, dataKind)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := json.Unmarshal(data, external); err != nil {
|
|
return err
|
|
}
|
|
flags, meta := s.generateConvertMeta(dataVersion, objVersion, external)
|
|
if err := s.converter.Convert(external, obj, flags, meta); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Version and Kind should be blank in memory.
|
|
return s.SetVersionAndKind("", "", obj)
|
|
}
|