// Decode attempts to convert the provided data into a protobuf message, extract the stored schema kind, apply the provided default
// gvk, and then load that data into an object matching the desired schema kind or the provided into. If into is *runtime.Unknown,
// the raw data will be extracted and no decoding will be performed. If into is not registered with the typer, then the object will
// be straight decoded using normal protobuf unmarshalling (the MarshalTo interface). If into is provided and the original data is
// not fully qualified with kind/version/group, the type of the into will be used to alter the returned gvk. On success or most
// errors, the method will return the calculated schema kind.
func (s *Serializer) Decode(originalData []byte, gvk *unversioned.GroupVersionKind, into runtime.Object) (runtime.Object, *unversioned.GroupVersionKind, error) {
if versioned, ok := into.(*runtime.VersionedObjects); ok {
into = versioned.Last()
obj, actual, err := s.Decode(originalData, gvk, into)
if err != nil {
return nil, actual, err
}
// the last item in versioned becomes into, so if versioned was not originally empty we reset the object
// array so the first position is the decoded object and the second position is the outermost object.
// if there were no objects in the versioned list passed to us, only add ourselves.
if into != nil && into != obj {
versioned.Objects = []runtime.Object{obj, into}
} else {
versioned.Objects = []runtime.Object{obj}
}
return versioned, actual, err
}
prefixLen := len(s.prefix)
switch {
case len(originalData) == 0:
// TODO: treat like decoding {} from JSON with defaulting
return nil, nil, fmt.Errorf("empty data")
case len(originalData) < prefixLen || !bytes.Equal(s.prefix, originalData[:prefixLen]):
return nil, nil, fmt.Errorf("provided data does not appear to be a protobuf message, expected prefix %v", s.prefix)
case len(originalData) == prefixLen:
// TODO: treat like decoding {} from JSON with defaulting
return nil, nil, fmt.Errorf("empty body")
}
data := originalData[prefixLen:]
unk := runtime.Unknown{}
if err := unk.Unmarshal(data); err != nil {
return nil, nil, err
}
actual := unk.GroupVersionKind()
copyKindDefaults(&actual, gvk)
if intoUnknown, ok := into.(*runtime.Unknown); ok && intoUnknown != nil {
*intoUnknown = unk
if ok, _, _ := s.RecognizesData(bytes.NewBuffer(unk.Raw)); ok {
intoUnknown.ContentType = s.contentType
}
return intoUnknown, &actual, nil
}
if into != nil {
types, _, err := s.typer.ObjectKinds(into)
switch {
case runtime.IsNotRegisteredError(err):
pb, ok := into.(proto.Message)
if !ok {
return nil, &actual, errNotMarshalable{reflect.TypeOf(into)}
}
if err := proto.Unmarshal(unk.Raw, pb); err != nil {
return nil, &actual, err
}
return into, &actual, nil
case err != nil:
return nil, &actual, err
default:
copyKindDefaults(&actual, &types[0])
// if the result of defaulting did not set a version or group, ensure that at least group is set
// (copyKindDefaults will not assign Group if version is already set). This guarantees that the group
// of into is set if there is no better information from the caller or object.
if len(actual.Version) == 0 && len(actual.Group) == 0 {
actual.Group = types[0].Group
}
}
}
if len(actual.Kind) == 0 {
return nil, &actual, runtime.NewMissingKindErr(fmt.Sprintf("%#v", unk.TypeMeta))
}
if len(actual.Version) == 0 {
return nil, &actual, runtime.NewMissingVersionErr(fmt.Sprintf("%#v", unk.TypeMeta))
}
return unmarshalToObject(s.typer, s.creater, &actual, into, unk.Raw)
}
// Decode attempts to convert the provided data into YAML or JSON, extract the stored schema kind, apply the provided default gvk, and then
// load that data into an object matching the desired schema kind or the provided into. If into is *runtime.Unknown, the raw data will be
// extracted and no decoding will be performed. If into is not registered with the typer, then the object will be straight decoded using
// normal JSON/YAML unmarshalling. If into is provided and the original data is not fully qualified with kind/version/group, the type of
// the into will be used to alter the returned gvk. On success or most errors, the method will return the calculated schema kind.
func (s *Serializer) Decode(originalData []byte, gvk *unversioned.GroupVersionKind, into runtime.Object) (runtime.Object, *unversioned.GroupVersionKind, error) {
if versioned, ok := into.(*runtime.VersionedObjects); ok {
into = versioned.Last()
obj, actual, err := s.Decode(originalData, gvk, into)
if err != nil {
return nil, actual, err
}
versioned.Objects = []runtime.Object{obj}
return versioned, actual, nil
}
data := originalData
if s.yaml {
altered, err := yaml.YAMLToJSON(data)
if err != nil {
return nil, nil, err
}
data = altered
}
actual, err := s.meta.Interpret(data)
if err != nil {
return nil, nil, err
}
if gvk != nil {
// apply kind and version defaulting from provided default
if len(actual.Kind) == 0 {
actual.Kind = gvk.Kind
}
if len(actual.Version) == 0 && len(actual.Group) == 0 {
actual.Group = gvk.Group
actual.Version = gvk.Version
}
if len(actual.Version) == 0 && actual.Group == gvk.Group {
actual.Version = gvk.Version
}
}
if unk, ok := into.(*runtime.Unknown); ok && unk != nil {
unk.Raw = originalData
unk.ContentType = runtime.ContentTypeJSON
unk.GetObjectKind().SetGroupVersionKind(*actual)
return unk, actual, nil
}
if into != nil {
types, _, err := s.typer.ObjectKinds(into)
switch {
case runtime.IsNotRegisteredError(err):
if err := codec.NewDecoderBytes(data, new(codec.JsonHandle)).Decode(into); err != nil {
return nil, actual, err
}
return into, actual, nil
case err != nil:
return nil, actual, err
default:
typed := types[0]
if len(actual.Kind) == 0 {
actual.Kind = typed.Kind
}
if len(actual.Version) == 0 && len(actual.Group) == 0 {
actual.Group = typed.Group
actual.Version = typed.Version
}
if len(actual.Version) == 0 && actual.Group == typed.Group {
actual.Version = typed.Version
}
}
}
if len(actual.Kind) == 0 {
return nil, actual, runtime.NewMissingKindErr(string(originalData))
}
if len(actual.Version) == 0 {
return nil, actual, runtime.NewMissingVersionErr(string(originalData))
}
// use the target if necessary
obj, err := runtime.UseOrCreateObject(s.typer, s.creater, *actual, into)
if err != nil {
return nil, actual, err
}
if err := codec.NewDecoderBytes(data, new(codec.JsonHandle)).Decode(obj); err != nil {
return nil, actual, err
}
return obj, actual, nil
}
// Decode attempts to convert the provided data into a protobuf message, extract the stored schema kind, apply the provided default
// gvk, and then load that data into an object matching the desired schema kind or the provided into. If into is *runtime.Unknown,
// the raw data will be extracted and no decoding will be performed. If into is not registered with the typer, then the object will
// be straight decoded using normal protobuf unmarshalling (the MarshalTo interface). If into is provided and the original data is
// not fully qualified with kind/version/group, the type of the into will be used to alter the returned gvk. On success or most
// errors, the method will return the calculated schema kind.
func (s *RawSerializer) Decode(originalData []byte, gvk *unversioned.GroupVersionKind, into runtime.Object) (runtime.Object, *unversioned.GroupVersionKind, error) {
if into == nil {
return nil, nil, fmt.Errorf("this serializer requires an object to decode into: %#v", s)
}
if versioned, ok := into.(*runtime.VersionedObjects); ok {
into = versioned.Last()
obj, actual, err := s.Decode(originalData, gvk, into)
if err != nil {
return nil, actual, err
}
if into != nil && into != obj {
versioned.Objects = []runtime.Object{obj, into}
} else {
versioned.Objects = []runtime.Object{obj}
}
return versioned, actual, err
}
if len(originalData) == 0 {
// TODO: treat like decoding {} from JSON with defaulting
return nil, nil, fmt.Errorf("empty data")
}
data := originalData
actual := &unversioned.GroupVersionKind{}
copyKindDefaults(actual, gvk)
if intoUnknown, ok := into.(*runtime.Unknown); ok && intoUnknown != nil {
intoUnknown.Raw = data
intoUnknown.ContentEncoding = ""
intoUnknown.ContentType = s.contentType
intoUnknown.SetGroupVersionKind(*actual)
return intoUnknown, actual, nil
}
types, _, err := s.typer.ObjectKinds(into)
switch {
case runtime.IsNotRegisteredError(err):
pb, ok := into.(proto.Message)
if !ok {
return nil, actual, errNotMarshalable{reflect.TypeOf(into)}
}
if err := proto.Unmarshal(data, pb); err != nil {
return nil, actual, err
}
return into, actual, nil
case err != nil:
return nil, actual, err
default:
copyKindDefaults(actual, &types[0])
// if the result of defaulting did not set a version or group, ensure that at least group is set
// (copyKindDefaults will not assign Group if version is already set). This guarantees that the group
// of into is set if there is no better information from the caller or object.
if len(actual.Version) == 0 && len(actual.Group) == 0 {
actual.Group = types[0].Group
}
}
if len(actual.Kind) == 0 {
return nil, actual, runtime.NewMissingKindErr("<protobuf encoded body - must provide default type>")
}
if len(actual.Version) == 0 {
return nil, actual, runtime.NewMissingVersionErr("<protobuf encoded body - must provide default type>")
}
return unmarshalToObject(s.typer, s.creater, actual, into, data)
}