/
codec.go
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/
codec.go
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package protobuf
import (
"fmt"
"github.com/golang/protobuf/proto"
"github.com/pubgo/lava/encoding"
pb "google.golang.org/protobuf/proto"
)
var Name = "proto"
func init() {
encoding.Register(Name, protobufCodec{})
}
// protobufCodec uses protobuf marshaler and unmarshaler.
type protobufCodec struct{}
func (c protobufCodec) Marshal(v interface{}) ([]byte, error) {
if m, ok := v.(proto.Marshaler); ok {
return m.Marshal()
}
if m, ok := v.(pb.Message); ok {
return pb.Marshal(m)
}
return nil, fmt.Errorf("%T is not a proto.Marshaler", v)
}
func (c protobufCodec) Unmarshal(data []byte, v interface{}) error {
if m, ok := v.(proto.Unmarshaler); ok {
return m.Unmarshal(data)
}
if m, ok := v.(pb.Message); ok {
return pb.Unmarshal(data, m)
}
return fmt.Errorf("%T is not a proto.Unmarshaler", v)
}
func (c protobufCodec) Name() string {
return Name
}
// Encode encodes an object into slice of bytes.
func (c protobufCodec) Encode(i interface{}) ([]byte, error) {
if m, ok := i.(proto.Marshaler); ok {
return m.Marshal()
}
if m, ok := i.(pb.Message); ok {
return pb.Marshal(m)
}
return nil, fmt.Errorf("%T is not a proto.Marshaler", i)
}
// Decode decodes an object from slice of bytes.
func (c protobufCodec) Decode(data []byte, i interface{}) error {
if m, ok := i.(proto.Unmarshaler); ok {
return m.Unmarshal(data)
}
if m, ok := i.(pb.Message); ok {
return pb.Unmarshal(data, m)
}
return fmt.Errorf("%T is not a proto.Unmarshaler", i)
}