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xeth, rpc: implement eth_estimateGas. Closes #930

This commit is contained in:
obscuren 2015-05-12 14:14:08 +02:00
parent 96d4a7d087
commit 66de3f0aa8
3 changed files with 29 additions and 10 deletions
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2
cmd/mist/ui_lib.go
View File

@ -127,7 +127,7 @@ func (self *UiLib) Transact(params map[string]interface{}) (string, error) {
)
}
func (self *UiLib) Call(params map[string]interface{}) (string, error) {
func (self *UiLib) Call(params map[string]interface{}) (string, string, error) {
object := mapToTxParams(params)
return self.XEth.Call(

31
rpc/api.go
View File

@ -186,16 +186,24 @@ func (api *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) err
return err
}
*reply = v
case "eth_call":
args := new(CallArgs)
if err := json.Unmarshal(req.Params, &args); err != nil {
return err
}
v, err := api.xethAtStateNum(args.BlockNumber).Call(args.From, args.To, args.Value.String(), args.Gas.String(), args.GasPrice.String(), args.Data)
case "eth_estimateGas":
_, gas, err := api.doCall(req.Params)
if err != nil {
return err
}
// TODO unwrap the parent method's ToHex call
if len(gas) == 0 {
*reply = newHexData([]byte{})
} else {
*reply = newHexData(gas)
}
case "eth_call":
v, _, err := api.doCall(req.Params)
if err != nil {
return err
}
// TODO unwrap the parent method's ToHex call
if v == "0x0" {
*reply = newHexData([]byte{})
@ -571,3 +579,12 @@ func (api *EthereumApi) GetRequestReply(req *RpcRequest, reply *interface{}) err
glog.V(logger.Detail).Infof("Reply: %T %s\n", reply, reply)
return nil
}
func (api *EthereumApi) doCall(params json.RawMessage) (string, string, error) {
args := new(CallArgs)
if err := json.Unmarshal(params, &args); err != nil {
return "", "", err
}
return api.xethAtStateNum(args.BlockNumber).Call(args.From, args.To, args.Value.String(), args.Gas.String(), args.GasPrice.String(), args.Data)
}

6
xeth/xeth.go
View File

@ -773,7 +773,7 @@ func (self *XEth) PushTx(encodedTx string) (string, error) {
return tx.Hash().Hex(), nil
}
func (self *XEth) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
func (self *XEth) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, dataStr string) (string, string, error) {
statedb := self.State().State() //self.eth.ChainManager().TransState()
var from *state.StateObject
if len(fromStr) == 0 {
@ -807,8 +807,10 @@ func (self *XEth) Call(fromStr, toStr, valueStr, gasStr, gasPriceStr, dataStr st
block := self.CurrentBlock()
vmenv := core.NewEnv(statedb, self.backend.ChainManager(), msg, block)
initialGas := new(big.Int).Set(msg.gas)
res, err := vmenv.Call(msg.from, msg.to, msg.data, msg.gas, msg.gasPrice, msg.value)
return common.ToHex(res), err
return common.ToHex(res), initialGas.Sub(initialGas, msg.gas).String(), err
}
func (self *XEth) ConfirmTransaction(tx string) bool {