forked from cerc-io/plugeth
108 lines
3.2 KiB
Go
108 lines
3.2 KiB
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 shared
|
|
|
|
import (
|
|
"encoding/json"
|
|
|
|
"github.com/ethereum/go-ethereum/logger"
|
|
"github.com/ethereum/go-ethereum/logger/glog"
|
|
)
|
|
|
|
// Ethereum RPC API interface
|
|
type EthereumApi interface {
|
|
// API identifier
|
|
Name() string
|
|
|
|
// API version
|
|
ApiVersion() string
|
|
|
|
// Execute the given request and returns the response or an error
|
|
Execute(*Request) (interface{}, error)
|
|
|
|
// List of supported RCP methods this API provides
|
|
Methods() []string
|
|
}
|
|
|
|
// RPC request
|
|
type Request struct {
|
|
Id interface{} `json:"id"`
|
|
Jsonrpc string `json:"jsonrpc"`
|
|
Method string `json:"method"`
|
|
Params json.RawMessage `json:"params"`
|
|
}
|
|
|
|
// RPC response
|
|
type Response struct {
|
|
Id interface{} `json:"id"`
|
|
Jsonrpc string `json:"jsonrpc"`
|
|
}
|
|
|
|
// RPC success response
|
|
type SuccessResponse struct {
|
|
Id interface{} `json:"id"`
|
|
Jsonrpc string `json:"jsonrpc"`
|
|
Result interface{} `json:"result"`
|
|
}
|
|
|
|
// RPC error response
|
|
type ErrorResponse struct {
|
|
Id interface{} `json:"id"`
|
|
Jsonrpc string `json:"jsonrpc"`
|
|
Error *ErrorObject `json:"error"`
|
|
}
|
|
|
|
// RPC error response details
|
|
type ErrorObject struct {
|
|
Code int `json:"code"`
|
|
Message string `json:"message"`
|
|
// Data interface{} `json:"data"`
|
|
}
|
|
|
|
// Create RPC error response, this allows for custom error codes
|
|
func NewRpcErrorResponse(id interface{}, jsonrpcver string, errCode int, err error) *interface{} {
|
|
var response interface{}
|
|
|
|
jsonerr := &ErrorObject{errCode, err.Error()}
|
|
response = ErrorResponse{Jsonrpc: jsonrpcver, Id: id, Error: jsonerr}
|
|
|
|
glog.V(logger.Detail).Infof("Generated error response: %s", response)
|
|
return &response
|
|
}
|
|
|
|
// Create RPC response
|
|
func NewRpcResponse(id interface{}, jsonrpcver string, reply interface{}, err error) *interface{} {
|
|
var response interface{}
|
|
|
|
switch err.(type) {
|
|
case nil:
|
|
response = &SuccessResponse{Jsonrpc: jsonrpcver, Id: id, Result: reply}
|
|
case *NotImplementedError:
|
|
jsonerr := &ErrorObject{-32601, err.Error()}
|
|
response = &ErrorResponse{Jsonrpc: jsonrpcver, Id: id, Error: jsonerr}
|
|
case *DecodeParamError, *InsufficientParamsError, *ValidationError, *InvalidTypeError:
|
|
jsonerr := &ErrorObject{-32602, err.Error()}
|
|
response = &ErrorResponse{Jsonrpc: jsonrpcver, Id: id, Error: jsonerr}
|
|
default:
|
|
jsonerr := &ErrorObject{-32603, err.Error()}
|
|
response = &ErrorResponse{Jsonrpc: jsonrpcver, Id: id, Error: jsonerr}
|
|
}
|
|
|
|
glog.V(logger.Detail).Infof("Generated response: %T %s", response, response)
|
|
return &response
|
|
}
|