90 lines
2.2 KiB
Go
90 lines
2.2 KiB
Go
package rpc
|
|
|
|
import (
|
|
"encoding/json"
|
|
|
|
"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) {
|
|
rpcerr := &shared.ErrorObject{code, msg}
|
|
call.Otto.Set("ret_jsonrpc", shared.JsonRpcVersion)
|
|
call.Otto.Set("ret_id", id)
|
|
call.Otto.Set("ret_error", rpcerr)
|
|
response, _ = call.Otto.Run(`
|
|
ret_response = { jsonrpc: ret_jsonrpc, id: ret_id, error: ret_error };
|
|
`)
|
|
return
|
|
}
|
|
|
|
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
|
|
}
|