108 lines
3.2 KiB
Go
108 lines
3.2 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library 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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// The go-ethereum library 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 the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package shared
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import (
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"encoding/json"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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)
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// Ethereum RPC API interface
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type EthereumApi interface {
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// API identifier
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Name() string
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// API version
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ApiVersion() string
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// Execute the given request and returns the response or an error
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Execute(*Request) (interface{}, error)
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// List of supported RCP methods this API provides
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Methods() []string
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}
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// RPC request
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type Request struct {
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Id interface{} `json:"id"`
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Jsonrpc string `json:"jsonrpc"`
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Method string `json:"method"`
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Params json.RawMessage `json:"params"`
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}
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// RPC response
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type Response struct {
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Id interface{} `json:"id"`
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Jsonrpc string `json:"jsonrpc"`
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}
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// RPC success response
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type SuccessResponse struct {
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Id interface{} `json:"id"`
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Jsonrpc string `json:"jsonrpc"`
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Result interface{} `json:"result"`
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}
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// RPC error response
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type ErrorResponse struct {
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Id interface{} `json:"id"`
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Jsonrpc string `json:"jsonrpc"`
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Error *ErrorObject `json:"error"`
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}
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// RPC error response details
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type ErrorObject struct {
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Code int `json:"code"`
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Message string `json:"message"`
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// Data interface{} `json:"data"`
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}
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// Create RPC error response, this allows for custom error codes
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func NewRpcErrorResponse(id interface{}, jsonrpcver string, errCode int, err error) *interface{} {
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var response interface{}
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jsonerr := &ErrorObject{errCode, err.Error()}
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response = ErrorResponse{Jsonrpc: jsonrpcver, Id: id, Error: jsonerr}
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glog.V(logger.Detail).Infof("Generated error response: %s", response)
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return &response
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}
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// Create RPC response
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func NewRpcResponse(id interface{}, jsonrpcver string, reply interface{}, err error) *interface{} {
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var response interface{}
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switch err.(type) {
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case nil:
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response = &SuccessResponse{Jsonrpc: jsonrpcver, Id: id, Result: reply}
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case *NotImplementedError:
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jsonerr := &ErrorObject{-32601, err.Error()}
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response = &ErrorResponse{Jsonrpc: jsonrpcver, Id: id, Error: jsonerr}
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case *DecodeParamError, *InsufficientParamsError, *ValidationError, *InvalidTypeError:
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jsonerr := &ErrorObject{-32602, err.Error()}
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response = &ErrorResponse{Jsonrpc: jsonrpcver, Id: id, Error: jsonerr}
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default:
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jsonerr := &ErrorObject{-32603, err.Error()}
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response = &ErrorResponse{Jsonrpc: jsonrpcver, Id: id, Error: jsonerr}
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}
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glog.V(logger.Detail).Infof("Generated response: %T %s", response, response)
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return &response
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}
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