Golang Transaction.To方法代碼示例

func (self *XEth) PushTx(encodedTx string) (string, error) {
	tx := new(types.Transaction)
	err := rlp.DecodeBytes(common.FromHex(encodedTx), tx)
	if err != nil {
		glog.V(logger.Error).Infoln(err)
		return "", err
	}

	err = self.backend.TxPool().Add(tx)
	if err != nil {
		return "", err
	}

	if tx.To() == nil {
		from, err := tx.From()
		if err != nil {
			return "", err
		}

		addr := crypto.CreateAddress(from, tx.Nonce())
		glog.V(logger.Info).Infof("Tx(%x) created: %x\n", tx.Hash(), addr)
	} else {
		glog.V(logger.Info).Infof("Tx(%x) to: %x\n", tx.Hash(), tx.To())
	}

	return tx.Hash().Hex(), nil
}

// validate and queue transactions.
func (self *TxPool) add(tx *types.Transaction) error {
	hash := tx.Hash()

	if self.pending[hash] != nil {
		return fmt.Errorf("Known transaction (%x)", hash[:4])
	}
	err := self.validateTx(tx)
	if err != nil {
		return err
	}
	self.queueTx(hash, tx)

	if glog.V(logger.Debug) {
		var toname string
		if to := tx.To(); to != nil {
			toname = common.Bytes2Hex(to[:4])
		} else {
			toname = "[NEW_CONTRACT]"
		}
		// we can ignore the error here because From is
		// verified in ValidateTransaction.
		f, _ := tx.From()
		from := common.Bytes2Hex(f[:4])
		glog.Infof("(t) %x => %s (%v) %x\n", from, toname, tx.Value, hash)
	}

	return nil
}

func NewTx(tx *types.Transaction) *Transaction {
	sender, err := tx.From()
	if err != nil {
		return nil
	}
	hash := tx.Hash().Hex()

	var receiver string
	if to := tx.To(); to != nil {
		receiver = to.Hex()
	} else {
		from, _ := tx.From()
		receiver = crypto.CreateAddress(from, tx.Nonce()).Hex()
	}
	createsContract := core.MessageCreatesContract(tx)

	var data string
	if createsContract {
		data = strings.Join(core.Disassemble(tx.Data()), "\n")
	} else {
		data = common.ToHex(tx.Data())
	}

	return &Transaction{ref: tx, Hash: hash, Value: common.CurrencyToString(tx.Value()), Address: receiver, Contract: createsContract, Gas: tx.Gas().String(), GasPrice: tx.GasPrice().String(), Data: data, Sender: sender.Hex(), CreatesContract: createsContract, RawData: common.ToHex(tx.Data())}
}

func newTx(t *types.Transaction) *tx {
	from, _ := t.From()
	var to string
	if t := t.To(); t != nil {
		to = t.Hex()
	}

	return &tx{
		tx:       t,
		To:       to,
		From:     from.Hex(),
		Value:    t.Value().String(),
		Nonce:    strconv.Itoa(int(t.Nonce())),
		Data:     "0x" + common.Bytes2Hex(t.Data()),
		GasLimit: t.Gas().String(),
		GasPrice: t.GasPrice().String(),
	}
}

func NewTransactionRes(tx *types.Transaction) *TransactionRes {
	if tx == nil {
		return nil
	}

	var v = new(TransactionRes)
	v.Hash = newHexData(tx.Hash())
	v.Nonce = newHexNum(tx.Nonce())
	// v.BlockHash =
	// v.BlockNumber =
	// v.TxIndex =
	from, _ := tx.From()
	v.From = newHexData(from)
	v.To = newHexData(tx.To())
	v.Value = newHexNum(tx.Value())
	v.Gas = newHexNum(tx.Gas())
	v.GasPrice = newHexNum(tx.GasPrice())
	v.Input = newHexData(tx.Data())
	return v
}

func (gui *Gui) insertTransaction(window string, tx *types.Transaction) {
	var inout string
	from, _ := tx.From()
	if gui.eth.AccountManager().HasAccount(common.Hex2Bytes(from.Hex())) {
		inout = "send"
	} else {
		inout = "recv"
	}

	ptx := xeth.NewTx(tx)
	ptx.Sender = from.Hex()
	if to := tx.To(); to != nil {
		ptx.Address = to.Hex()
	}

	if window == "post" {
		//gui.getObjectByName("transactionView").Call("addTx", ptx, inout)
	} else {
		gui.getObjectByName("pendingTxView").Call("addTx", ptx, inout)
	}
}

func (self *TxPool) add(tx *types.Transaction) error {
	hash := tx.Hash()

	/* XXX I'm unsure about this. This is extremely dangerous and may result
	 in total black listing of certain transactions
	if self.invalidHashes.Has(hash) {
		return fmt.Errorf("Invalid transaction (%x)", hash[:4])
	}
	*/
	if self.txs[hash] != nil {
		return fmt.Errorf("Known transaction (%x)", hash[:4])
	}
	err := self.ValidateTransaction(tx)
	if err != nil {
		return err
	}

	self.queueTx(tx)

	var toname string
	if to := tx.To(); to != nil {
		toname = common.Bytes2Hex(to[:4])
	} else {
		toname = "[NEW_CONTRACT]"
	}
	// we can ignore the error here because From is
	// verified in ValidateTransaction.
	f, _ := tx.From()
	from := common.Bytes2Hex(f[:4])

	if glog.V(logger.Debug) {
		glog.Infof("(t) %x => %s (%v) %x\n", from, toname, tx.Value, tx.Hash())
	}

	return nil
}

func verifyTxFields(txTest TransactionTest, decodedTx *types.Transaction) (err error) {
	defer func() {
		if recovered := recover(); recovered != nil {
			buf := make([]byte, 64<<10)
			buf = buf[:runtime.Stack(buf, false)]
			err = fmt.Errorf("%v\n%s", recovered, buf)
		}
	}()

	decodedSender, err := decodedTx.From()
	if err != nil {
		return err
	}

	expectedSender := mustConvertAddress(txTest.Sender)
	if expectedSender != decodedSender {
		return fmt.Errorf("Sender mismatch: %v %v", expectedSender, decodedSender)
	}

	expectedData := mustConvertBytes(txTest.Transaction.Data)
	if !bytes.Equal(expectedData, decodedTx.Data()) {
		return fmt.Errorf("Tx input data mismatch: %#v %#v", expectedData, decodedTx.Data())
	}

	expectedGasLimit := mustConvertBigInt(txTest.Transaction.GasLimit, 16)
	if expectedGasLimit.Cmp(decodedTx.Gas()) != 0 {
		return fmt.Errorf("GasLimit mismatch: %v %v", expectedGasLimit, decodedTx.Gas())
	}

	expectedGasPrice := mustConvertBigInt(txTest.Transaction.GasPrice, 16)
	if expectedGasPrice.Cmp(decodedTx.GasPrice()) != 0 {
		return fmt.Errorf("GasPrice mismatch: %v %v", expectedGasPrice, decodedTx.GasPrice())
	}

	expectedNonce := mustConvertUint(txTest.Transaction.Nonce, 16)
	if expectedNonce != decodedTx.Nonce() {
		return fmt.Errorf("Nonce mismatch: %v %v", expectedNonce, decodedTx.Nonce())
	}

	v, r, s := decodedTx.SignatureValues()
	expectedR := mustConvertBigInt(txTest.Transaction.R, 16)
	if r.Cmp(expectedR) != 0 {
		return fmt.Errorf("R mismatch: %v %v", expectedR, r)
	}
	expectedS := mustConvertBigInt(txTest.Transaction.S, 16)
	if s.Cmp(expectedS) != 0 {
		return fmt.Errorf("S mismatch: %v %v", expectedS, s)
	}
	expectedV := mustConvertUint(txTest.Transaction.V, 16)
	if uint64(v) != expectedV {
		return fmt.Errorf("V mismatch: %v %v", expectedV, v)
	}

	expectedTo := mustConvertAddress(txTest.Transaction.To)
	if decodedTx.To() == nil {
		if expectedTo != common.BytesToAddress([]byte{}) { // "empty" or "zero" address
			return fmt.Errorf("To mismatch when recipient is nil (contract creation): %v", expectedTo)
		}
	} else {
		if expectedTo != *decodedTx.To() {
			return fmt.Errorf("To mismatch: %v %v", expectedTo, *decodedTx.To())
		}
	}

	expectedValue := mustConvertBigInt(txTest.Transaction.Value, 16)
	if expectedValue.Cmp(decodedTx.Value()) != 0 {
		return fmt.Errorf("Value mismatch: %v %v", expectedValue, decodedTx.Value())
	}

	return nil
}

func (self *XEth) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {

	// this minimalistic recoding is enough (works for natspec.js)
	var jsontx = fmt.Sprintf(`{"params":[{"to":"%s","data": "%s"}]}`, toStr, codeStr)
	if !self.ConfirmTransaction(jsontx) {
		err := fmt.Errorf("Transaction not confirmed")
		return "", err
	}

	var (
		from             = common.HexToAddress(fromStr)
		to               = common.HexToAddress(toStr)
		value            = common.Big(valueStr)
		gas              *big.Int
		price            *big.Int
		data             []byte
		contractCreation bool
	)

	if len(gasStr) == 0 {
		gas = DefaultGas()
	} else {
		gas = common.Big(gasStr)
	}

	if len(gasPriceStr) == 0 {
		price = self.DefaultGasPrice()
	} else {
		price = common.Big(gasPriceStr)
	}

	data = common.FromHex(codeStr)
	if len(toStr) == 0 {
		contractCreation = true
	}

	// 2015-05-18 Is this still needed?
	// TODO if no_private_key then
	//if _, exists := p.register[args.From]; exists {
	//	p.register[args.From] = append(p.register[args.From], args)
	//} else {
	/*
		account := accounts.Get(common.FromHex(args.From))
		if account != nil {
			if account.Unlocked() {
				if !unlockAccount(account) {
					return
				}
			}

			result, _ := account.Transact(common.FromHex(args.To), common.FromHex(args.Value), common.FromHex(args.Gas), common.FromHex(args.GasPrice), common.FromHex(args.Data))
			if len(result) > 0 {
				*reply = common.ToHex(result)
			}
		} else if _, exists := p.register[args.From]; exists {
			p.register[ags.From] = append(p.register[args.From], args)
		}
	*/

	// TODO: align default values to have the same type, e.g. not depend on
	// common.Value conversions later on
	var nonce uint64
	if len(nonceStr) != 0 {
		nonce = common.Big(nonceStr).Uint64()
	} else {
		state := self.backend.TxPool().State()
		nonce = state.GetNonce(from)
	}
	var tx *types.Transaction
	if contractCreation {
		tx = types.NewContractCreation(nonce, value, gas, price, data)
	} else {
		tx = types.NewTransaction(nonce, to, value, gas, price, data)
	}

	signed, err := self.sign(tx, from, false)
	if err != nil {
		return "", err
	}
	if err = self.backend.TxPool().Add(signed); err != nil {
		return "", err
	}

	if contractCreation {
		addr := crypto.CreateAddress(from, nonce)
		glog.V(logger.Info).Infof("Tx(%x) created: %x\n", tx.Hash(), addr)
	} else {
		glog.V(logger.Info).Infof("Tx(%x) to: %x\n", tx.Hash(), tx.To())
	}

	return signed.Hash().Hex(), nil
}

// Transact forms a transaction from the given arguments and submits it to the
// transactio pool for execution.
func (be *registryAPIBackend) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
	if len(toStr) > 0 && toStr != "0x" && !common.IsHexAddress(toStr) {
		return "", errors.New("invalid address")
	}

	var (
		from             = common.HexToAddress(fromStr)
		to               = common.HexToAddress(toStr)
		value            = common.Big(valueStr)
		gas              *big.Int
		price            *big.Int
		data             []byte
		contractCreation bool
	)

	if len(gasStr) == 0 {
		gas = big.NewInt(90000)
	} else {
		gas = common.Big(gasStr)
	}

	if len(gasPriceStr) == 0 {
		price = big.NewInt(10000000000000)
	} else {
		price = common.Big(gasPriceStr)
	}

	data = common.FromHex(codeStr)
	if len(toStr) == 0 {
		contractCreation = true
	}

	nonce := be.txPool.State().GetNonce(from)
	if len(nonceStr) != 0 {
		nonce = common.Big(nonceStr).Uint64()
	}

	var tx *types.Transaction
	if contractCreation {
		tx = types.NewContractCreation(nonce, value, gas, price, data)
	} else {
		tx = types.NewTransaction(nonce, to, value, gas, price, data)
	}

	acc := accounts.Account{from}
	signature, err := be.am.Sign(acc, tx.SigHash().Bytes())
	if err != nil {
		return "", err
	}
	signedTx, err := tx.WithSignature(signature)
	if err != nil {
		return "", err
	}

	be.txPool.SetLocal(signedTx)
	if err := be.txPool.Add(signedTx); err != nil {
		return "", nil
	}

	if contractCreation {
		addr := crypto.CreateAddress(from, nonce)
		glog.V(logger.Info).Infof("Tx(%s) created: %s\n", signedTx.Hash().Hex(), addr.Hex())
	} else {
		glog.V(logger.Info).Infof("Tx(%s) to: %s\n", signedTx.Hash().Hex(), tx.To().Hex())
	}

	return signedTx.Hash().Hex(), nil
}

func (self *XEth) Transact(fromStr, toStr, nonceStr, valueStr, gasStr, gasPriceStr, codeStr string) (string, error) {
	var (
		from             = common.HexToAddress(fromStr)
		to               = common.HexToAddress(toStr)
		value            = common.NewValue(valueStr)
		gas              = common.Big(gasStr)
		price            = common.Big(gasPriceStr)
		data             []byte
		contractCreation bool
	)

	// TODO if no_private_key then
	//if _, exists := p.register[args.From]; exists {
	//	p.register[args.From] = append(p.register[args.From], args)
	//} else {
	/*
		account := accounts.Get(common.FromHex(args.From))
		if account != nil {
			if account.Unlocked() {
				if !unlockAccount(account) {
					return
				}
			}

			result, _ := account.Transact(common.FromHex(args.To), common.FromHex(args.Value), common.FromHex(args.Gas), common.FromHex(args.GasPrice), common.FromHex(args.Data))
			if len(result) > 0 {
				*reply = common.ToHex(result)
			}
		} else if _, exists := p.register[args.From]; exists {
			p.register[ags.From] = append(p.register[args.From], args)
		}
	*/

	// TODO: align default values to have the same type, e.g. not depend on
	// common.Value conversions later on
	if gas.Cmp(big.NewInt(0)) == 0 {
		gas = DefaultGas()
	}

	if price.Cmp(big.NewInt(0)) == 0 {
		price = DefaultGasPrice()
	}

	data = common.FromHex(codeStr)
	if len(toStr) == 0 {
		contractCreation = true
	}

	var tx *types.Transaction
	if contractCreation {
		tx = types.NewContractCreationTx(value.BigInt(), gas, price, data)
	} else {
		tx = types.NewTransactionMessage(to, value.BigInt(), gas, price, data)
	}

	state := self.backend.ChainManager().TxState()

	var nonce uint64
	if len(nonceStr) != 0 {
		nonce = common.Big(nonceStr).Uint64()
	} else {
		nonce = state.NewNonce(from)
	}
	tx.SetNonce(nonce)

	if err := self.sign(tx, from, false); err != nil {
		return "", err
	}
	if err := self.backend.TxPool().Add(tx); err != nil {
		return "", err
	}

	if contractCreation {
		addr := core.AddressFromMessage(tx)
		glog.V(logger.Info).Infof("Tx(%x) created: %x\n", tx.Hash(), addr)

		return core.AddressFromMessage(tx).Hex(), nil
	} else {
		glog.V(logger.Info).Infof("Tx(%x) to: %x\n", tx.Hash(), tx.To())
	}
	return tx.Hash().Hex(), nil
}