json.go

// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package client

import (
	"encoding/json"
	"fmt"
)

// A value of this type can a JSON-RPC request, notification, successful response or
// error response. Which one it is depends on the fields.
type jsonrpcMessage struct {
	Version string          `json:"jsonrpc,omitempty"`
	ID      int64           `json:"id,omitempty"`
	Method  string          `json:"method,omitempty"`
	Params  json.RawMessage `json:"params,omitempty"`
	Error   *jsonError      `json:"error,omitempty"`
	Result  json.RawMessage `json:"result,omitempty"`
}

// A value of this type can a JSON-RPC request, notification, successful response or
// error response. Which one it is depends on the fields.
//type resRpcMessage struct {
//	Version string          `json:"jsonrpc,omitempty"`
//	Method  string          `json:"method,omitempty"`
//	Params  json.RawMessage `json:"params,omitempty"`
//	Error   *jsonError      `json:"error,omitempty"`
//	ID      int             `json:"id,omitempty"`
//	Jsonrpc string          `json:"jsonrpc,omitempty"`
//	Result  json.RawMessage `json:"result,omitempty"`
//}

func (msg *jsonrpcMessage) String() string {
	b, _ := json.Marshal(msg)
	return string(b)
}

type jsonError struct {
	Code    int         `json:"code"`
	Message string      `json:"message"`
	Data    interface{} `json:"data,omitempty"`
}

func (err *jsonError) Error() string {
	if err.Message == "" {
		return fmt.Sprintf("json-rpc error %d", err.Code)
	}
	return err.Message
}

func (err *jsonError) ErrorCode() int {
	return err.Code
}