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typed_message.go
43 lines (37 loc) · 951 Bytes
/
typed_message.go
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package serial
import (
"errors"
"reflect"
"github.com/golang/protobuf/proto"
)
func ToTypedMessage(message proto.Message) *TypedMessage {
if message == nil {
return nil
}
settings, _ := proto.Marshal(message)
return &TypedMessage{
Type: GetMessageType(message),
Value: settings,
}
}
func GetMessageType(message proto.Message) string {
return proto.MessageName(message)
}
func GetInstance(messageType string) (interface{}, error) {
mType := proto.MessageType(messageType)
if mType == nil || mType.Elem() == nil {
return nil, errors.New("Serial: Unknown type: " + messageType)
}
return reflect.New(mType.Elem()).Interface(), nil
}
func (v *TypedMessage) GetInstance() (proto.Message, error) {
instance, err := GetInstance(v.Type)
if err != nil {
return nil, err
}
protoMessage := instance.(proto.Message)
if err := proto.Unmarshal(v.Value, protoMessage); err != nil {
return nil, err
}
return protoMessage, nil
}