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/*
This file is part of go-ethereum
go-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
go-ethereum 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
package rpc
import (
"encoding/json"
"github.com/ethereum/go-ethereum/logger"
"io"
"net/http"
"github.com/ethereum/go-ethereum/ethutil"
"github.com/ethereum/go-ethereum/state"
)
var rpclogger = logger.NewLogger("RPC")
type JsonWrapper struct{}
func (self JsonWrapper) Send(writer io.Writer, v interface{}) (n int, err error) {
var payload []byte
payload, err = json.Marshal(v)
if err != nil {
rpclogger.Fatalln("Error marshalling JSON", err)
return 0, err
}
rpclogger.Infof("Sending payload: %s", payload)
return writer.Write(payload)
}
func (self JsonWrapper) ParseRequestBody(req *http.Request) (RpcRequest, error) {
var reqParsed RpcRequest
// Convert JSON to native types
d := json.NewDecoder(req.Body)
// d.UseNumber()
defer req.Body.Close()
err := d.Decode(&reqParsed)
if err != nil {
rpclogger.Errorln("Error decoding JSON: ", err)
return reqParsed, err
}
rpclogger.DebugDetailf("Parsed request: %s", reqParsed)
return reqParsed, nil
}
func toHex(b []byte) string {
return "0x" + ethutil.Bytes2Hex(b)
}
func fromHex(s string) []byte {
if len(s) > 1 {
if s[0:2] == "0x" {
s = s[2:]
}
return ethutil.Hex2Bytes(s)
}
return nil
}
type RpcServer interface {
Start()
Stop()
}
type Log struct {
Address string `json:"address"`
Topics []string `json:"topics"`
Data string `json:"data"`
}
func toLogs(logs state.Logs) (ls []Log) {
ls = make([]Log, len(logs))
for i, log := range logs {
var l Log
l.Topics = make([]string, len(log.Topics()))
l.Address = toHex(log.Address())
l.Data = toHex(log.Data())
for j, topic := range log.Topics() {
l.Topics[j] = toHex(topic)
}
ls[i] = l
}
return
}
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