116 lines
2.6 KiB
Go
116 lines
2.6 KiB
Go
/*
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* lrpc allows for clients to call functions on a server remotely.
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* Copyright (C) 2022 Arsen Musayelyan
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package codec
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import (
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"bytes"
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"encoding/gob"
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"encoding/json"
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"io"
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"github.com/vmihailenco/msgpack/v5"
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)
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// <= go1.17 compatibility
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type any = interface{}
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// CodecFunc is a function that returns a new Codec
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// bound to the given io.ReadWriter
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type CodecFunc func(io.ReadWriter) Codec
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// Codec is able to encode and decode messages to/from
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// the given io.ReadWriter
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type Codec interface {
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Encode(val any) error
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Decode(val any) error
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Unmarshal(data []byte, v any) error
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Marshal(v any) ([]byte, error)
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}
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// Default is the default CodecFunc
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var Default = Msgpack
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type JsonCodec struct {
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*json.Encoder
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*json.Decoder
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}
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func (JsonCodec) Unmarshal(data []byte, v any) error {
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return json.Unmarshal(data, v)
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}
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func (JsonCodec) Marshal(v any) ([]byte, error) {
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return json.Marshal(v)
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}
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// JSON is a CodecFunc that creates a JSON Codec
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func JSON(rw io.ReadWriter) Codec {
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return JsonCodec{
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Encoder: json.NewEncoder(rw),
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Decoder: json.NewDecoder(rw),
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}
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}
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type MsgpackCodec struct {
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*msgpack.Encoder
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*msgpack.Decoder
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}
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func (MsgpackCodec) Unmarshal(data []byte, v any) error {
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return msgpack.Unmarshal(data, v)
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}
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func (MsgpackCodec) Marshal(v any) ([]byte, error) {
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return msgpack.Marshal(v)
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}
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// Msgpack is a CodecFunc that creates a Msgpack Codec
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func Msgpack(rw io.ReadWriter) Codec {
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return MsgpackCodec{
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Encoder: msgpack.NewEncoder(rw),
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Decoder: msgpack.NewDecoder(rw),
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}
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}
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type GobCodec struct {
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*gob.Encoder
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*gob.Decoder
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}
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func (GobCodec) Unmarshal(data []byte, v any) error {
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return gob.NewDecoder(bytes.NewReader(data)).Decode(v)
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}
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func (GobCodec) Marshal(v any) ([]byte, error) {
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buf := &bytes.Buffer{}
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err := gob.NewEncoder(buf).Encode(v)
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if err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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// Gob is a CodecFunc that creates a Gob Codec
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func Gob(rw io.ReadWriter) Codec {
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return GobCodec{
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Encoder: gob.NewEncoder(rw),
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Decoder: gob.NewDecoder(rw),
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}
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}
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