path: root/rpc/jeth.go

package rpc

import (
    "encoding/json"
    // "fmt"
    "github.com/ethereum/go-ethereum/jsre"
    "github.com/robertkrimen/otto"
)

type Jeth struct {
    ethApi *EthereumApi
    toVal  func(interface{}) otto.Value
    re     *jsre.JSRE
}

func NewJeth(ethApi *EthereumApi, toVal func(interface{}) otto.Value, re *jsre.JSRE) *Jeth {
    return &Jeth{ethApi, toVal, re}
}

func (self *Jeth) err(code int, msg string, id interface{}) (response otto.Value) {
    rpcerr := &RpcErrorObject{code, msg}
    self.re.Set("ret_jsonrpc", jsonrpcver)
    self.re.Set("ret_id", id)
    self.re.Set("ret_error", rpcerr)
    response, _ = self.re.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(-32700, err.Error(), nil)
    }

    jsonreq, err := json.Marshal(reqif)

    var req RpcRequest
    err = json.Unmarshal(jsonreq, &req)

    var respif interface{}
    err = self.ethApi.GetRequestReply(&req, &respif)
    if err != nil {
        return self.err(-32603, err.Error(), req.Id)
    }
    self.re.Set("ret_jsonrpc", jsonrpcver)
    self.re.Set("ret_id", req.Id)

    res, _ := json.Marshal(respif)
    self.re.Set("ret_result", string(res))
    response, err = self.re.Run(`
        ret_response = { jsonrpc: ret_jsonrpc, id: ret_id, result: JSON.parse(ret_result) };
    `)
    return
}