forked from cerc-io/plugeth
108 lines
3.0 KiB
Go
108 lines
3.0 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 rpc
|
|
|
|
import (
|
|
"encoding/json"
|
|
|
|
"fmt"
|
|
|
|
"github.com/ethereum/go-ethereum/jsre"
|
|
"github.com/ethereum/go-ethereum/rpc/comms"
|
|
"github.com/ethereum/go-ethereum/rpc/shared"
|
|
"github.com/robertkrimen/otto"
|
|
)
|
|
|
|
type Jeth struct {
|
|
ethApi shared.EthereumApi
|
|
re *jsre.JSRE
|
|
client comms.EthereumClient
|
|
}
|
|
|
|
func NewJeth(ethApi shared.EthereumApi, re *jsre.JSRE, client comms.EthereumClient) *Jeth {
|
|
return &Jeth{ethApi, re, client}
|
|
}
|
|
|
|
func (self *Jeth) err(call otto.FunctionCall, code int, msg string, id interface{}) (response otto.Value) {
|
|
errObj := fmt.Sprintf("{\"message\": \"%s\", \"code\": %d}", msg, code)
|
|
retResponse := fmt.Sprintf("ret_response = JSON.parse('{\"jsonrpc\": \"%s\", \"id\": %v, \"error\": %s}');", shared.JsonRpcVersion, id, errObj)
|
|
|
|
call.Otto.Run("ret_error = " + errObj)
|
|
res, _ := call.Otto.Run(retResponse)
|
|
|
|
return res
|
|
}
|
|
|
|
func (self *Jeth) Send(call otto.FunctionCall) (response otto.Value) {
|
|
reqif, err := call.Argument(0).Export()
|
|
if err != nil {
|
|
return self.err(call, -32700, err.Error(), nil)
|
|
}
|
|
|
|
jsonreq, err := json.Marshal(reqif)
|
|
var reqs []shared.Request
|
|
batch := true
|
|
err = json.Unmarshal(jsonreq, &reqs)
|
|
if err != nil {
|
|
reqs = make([]shared.Request, 1)
|
|
err = json.Unmarshal(jsonreq, &reqs[0])
|
|
batch = false
|
|
}
|
|
|
|
call.Otto.Set("response_len", len(reqs))
|
|
call.Otto.Run("var ret_response = new Array(response_len);")
|
|
|
|
for i, req := range reqs {
|
|
var respif interface{}
|
|
err := self.client.Send(&req)
|
|
if err != nil {
|
|
return self.err(call, -32603, err.Error(), req.Id)
|
|
}
|
|
respif, err = self.client.Recv()
|
|
|
|
if err != nil {
|
|
return self.err(call, -32603, err.Error(), req.Id)
|
|
}
|
|
|
|
call.Otto.Set("ret_jsonrpc", shared.JsonRpcVersion)
|
|
call.Otto.Set("ret_id", req.Id)
|
|
|
|
res, _ := json.Marshal(respif)
|
|
|
|
call.Otto.Set("ret_result", string(res))
|
|
call.Otto.Set("response_idx", i)
|
|
response, err = call.Otto.Run(`
|
|
ret_response[response_idx] = { jsonrpc: ret_jsonrpc, id: ret_id, result: JSON.parse(ret_result) };
|
|
`)
|
|
}
|
|
|
|
if !batch {
|
|
call.Otto.Run("ret_response = ret_response[0];")
|
|
}
|
|
|
|
if call.Argument(1).IsObject() {
|
|
call.Otto.Set("callback", call.Argument(1))
|
|
call.Otto.Run(`
|
|
if (Object.prototype.toString.call(callback) == '[object Function]') {
|
|
callback(null, ret_response);
|
|
}
|
|
`)
|
|
}
|
|
|
|
return
|
|
}
|