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lrpc/codec/codec.go

78 lines
1.9 KiB
Go

/*
* lrpc allows for clients to call functions on a server remotely.
* Copyright (C) 2022 Arsen Musayelyan
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package codec
import (
"encoding/gob"
"encoding/json"
"io"
"github.com/vmihailenco/msgpack/v5"
)
// CodecFunc is a function that returns a new Codec
// bound to the given io.ReadWriter
type CodecFunc func(io.ReadWriter) Codec
// Codec is able to encode and decode messages to/from
// the given io.ReadWriter
type Codec interface {
Encode(val any) error
Decode(val any) error
}
// Default is the default CodecFunc
var Default = Msgpack
// JSON is a CodecFunc that creates a JSON Codec
func JSON(rw io.ReadWriter) Codec {
type jsonCodec struct {
*json.Encoder
*json.Decoder
}
return jsonCodec{
Encoder: json.NewEncoder(rw),
Decoder: json.NewDecoder(rw),
}
}
// Msgpack is a CodecFunc that creates a Msgpack Codec
func Msgpack(rw io.ReadWriter) Codec {
type msgpackCodec struct {
*msgpack.Encoder
*msgpack.Decoder
}
return msgpackCodec{
Encoder: msgpack.NewEncoder(rw),
Decoder: msgpack.NewDecoder(rw),
}
}
// Gob is a CodecFunc that creates a Gob Codec
func Gob(rw io.ReadWriter) Codec {
type gobCodec struct {
*gob.Encoder
*gob.Decoder
}
return gobCodec{
Encoder: gob.NewEncoder(rw),
Decoder: gob.NewDecoder(rw),
}
}