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ngs/serialize/protobuf/protobuf.go

38 lines
938 B
Go

package protobuf
import (
"errors"
"google.golang.org/protobuf/proto"
"ngs/serialize"
)
// ErrWrongValueType is the error used for marshal the value with protobuf encoding.
var ErrWrongValueType = errors.New("protobuf: convert on wrong type value")
// Serializer implements the serialize.Serializer interface
type Serializer struct{}
// NewSerializer returns a new Serializer.
func NewSerializer() serialize.Serializer {
return &Serializer{}
}
// Marshal returns the protobuf encoding of v.
func (s *Serializer) Marshal(v interface{}) ([]byte, error) {
pb, ok := v.(proto.Message)
if !ok {
return nil, ErrWrongValueType
}
return proto.Marshal(pb)
}
// Unmarshal parses the protobuf-encoded data and stores the result
// in the value pointed to by v.
func (s *Serializer) Unmarshal(data []byte, v interface{}) error {
pb, ok := v.(proto.Message)
if !ok {
return ErrWrongValueType
}
return proto.Unmarshal(data, pb)
}