/
codec.go
61 lines (51 loc) · 1.48 KB
/
codec.go
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package codec
import (
"bytes"
"encoding/json"
"github.com/vmihailenco/msgpack"
)
type SerializeType byte
const (
SerializeTypeNone SerializeType = iota
SerializeTypeMsgpack
SerializeTypeJson
)
var (
serializers = map[SerializeType]Serializer{
SerializeTypeMsgpack: &msgpackSerializer{},
SerializeTypeJson: &jsonSerializer{},
}
)
type Serializer interface {
Encode(v interface{}) ([]byte, error)
Decode(data []byte, v interface{}) error
}
type jsonSerializer struct{}
func (js jsonSerializer) Encode(v interface{}) ([]byte, error) {
return json.Marshal(v)
}
func (js jsonSerializer) Decode(data []byte, v interface{}) error {
return json.Unmarshal(data, v)
}
type msgpackSerializer struct{}
func (ms msgpackSerializer) Encode(v interface{}) ([]byte, error) {
var buf bytes.Buffer
enc := msgpack.NewEncoder(&buf)
//UseJSONTag causes the Decoder to use json struct tag as fallback option if there is no msgpack tag.
enc.UseJSONTag(true)
err := enc.Encode(v)
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}
func (ms msgpackSerializer) Decode(data []byte, v interface{}) error {
buf := bytes.NewBuffer(data)
dec := msgpack.NewDecoder(buf)
//UseJSONTag causes the Decoder to use json struct tag as fallback option if there is no msgpack tag.
dec.UseJSONTag(true)
return dec.Decode(v)
}
func GetSerializer(styp SerializeType) Serializer {
return serializers[styp]
}