// Apply the patch to an object; as if the object were
// marshalled/unmarshalled JSON.
func (patch JSONMergePatch) Apply(in interface{}, out interface{}) locale.Error {
inBytes, uerr := json.Marshal(in)
if uerr != nil {
return locale.UntranslatedError(uerr)
}
outBytes, uerr := evan.MergePatch(inBytes, patch)
if uerr != nil {
return locale.UntranslatedError(uerr)
}
return locale.UntranslatedError(json.Unmarshal(outBytes, out))
}
// Merge requires JSON serialization
// TODO: merge assumes JSON serialization, and does not properly abstract API retrieval
func Merge(codec runtime.Codec, dst runtime.Object, fragment, kind string) (runtime.Object, error) {
// encode dst into versioned json and apply fragment directly too it
target, err := runtime.Encode(codec, dst)
if err != nil {
return nil, err
}
patched, err := jsonpatch.MergePatch(target, []byte(fragment))
if err != nil {
return nil, err
}
out, err := runtime.Decode(codec, patched)
if err != nil {
return nil, err
}
return out, nil
}
func getPatchedJSON(patchType types.PatchType, originalJS, patchJS []byte, obj runtime.Object) ([]byte, error) {
switch patchType {
case types.JSONPatchType:
patchObj, err := jsonpatch.DecodePatch(patchJS)
if err != nil {
return nil, err
}
return patchObj.Apply(originalJS)
case types.MergePatchType:
return jsonpatch.MergePatch(originalJS, patchJS)
case types.StrategicMergePatchType:
return strategicpatch.StrategicMergePatch(originalJS, patchJS, obj)
default:
// only here as a safety net - go-restful filters content-type
return nil, fmt.Errorf("unknown Content-Type header for patch: %v", patchType)
}
}
