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63 lines
1.7 KiB
63 lines
1.7 KiB
// Copyright 2015 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser 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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// go-ethereum 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package codec
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import (
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"net"
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"strconv"
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"github.com/ethereum/go-ethereum/rpc/shared"
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)
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type Codec int
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// (de)serialization support for rpc interface
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type ApiCoder interface {
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// Parse message to request from underlying stream
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ReadRequest() ([]*shared.Request, bool, error)
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// Parse response message from underlying stream
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ReadResponse() (interface{}, error)
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// Encode response to encoded form in underlying stream
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WriteResponse(interface{}) error
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// Decode single message from data
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Decode([]byte, interface{}) error
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// Encode msg to encoded form
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Encode(msg interface{}) ([]byte, error)
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// close the underlying stream
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Close()
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}
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// supported codecs
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const (
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JSON Codec = iota
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nCodecs
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)
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var (
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// collection with supported coders
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coders = make([]func(net.Conn) ApiCoder, nCodecs)
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)
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// create a new coder instance
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func (c Codec) New(conn net.Conn) ApiCoder {
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switch c {
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case JSON:
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return NewJsonCoder(conn)
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}
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panic("codec: request for codec #" + strconv.Itoa(int(c)) + " is unavailable")
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}
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