Examples with DataTransaction io.nuls.protocol.model.tx.DataTransaction used on opensource projects

Example 1 with DataTransaction

use of io.nuls.protocol.model.tx.DataTransaction in project nuls by nuls-io.

the class AccountLedgerServiceImpl method dapp.

@Override
public Result dapp(byte[] from, String password, byte[] data, byte[] remark) {
    Result<Account> accountResult = accountService.getAccount(from);
    if (accountResult.isFailed()) {
        return accountResult;
    }
    Account account = accountResult.getData();
    if (account.isEncrypted() && account.isLocked()) {
        AssertUtil.canNotEmpty(password, "the password can not be empty");
        if (!account.validatePassword(password)) {
            return Result.getFailed(AccountErrorCode.PASSWORD_IS_WRONG);
        }
    }
    DataTransaction tx = new DataTransaction();
    tx.setRemark(remark);
    tx.setTime(TimeService.currentTimeMillis());
    LogicData logicData = new LogicData(data);
    tx.setTxData(logicData);
    CoinData coinData = new CoinData();
    try {
        CoinDataResult coinDataResult = getCoinData(from, Na.ZERO, tx.size() + coinData.size(), TransactionFeeCalculator.MIN_PRICE_PRE_1024_BYTES);
        if (!coinDataResult.isEnough()) {
            return Result.getFailed(AccountLedgerErrorCode.INSUFFICIENT_BALANCE);
        }
        coinData.setFrom(coinDataResult.getCoinList());
        if (coinDataResult.getChange() != null) {
            coinData.getTo().add(coinDataResult.getChange());
        }
        tx.setCoinData(coinData);
        tx.setHash(NulsDigestData.calcDigestData(tx.serializeForHash()));
        // 生成签名
        List<ECKey> signEckeys = new ArrayList<>();
        List<ECKey> scriptEckeys = new ArrayList<>();
        ECKey eckey = account.getEcKey(password);
        // 如果最后一位为1则表示该交易包含普通签名
        if ((coinDataResult.getSignType() & 0x01) == 0x01) {
            signEckeys.add(eckey);
        }
        // 如果倒数第二位位为1则表示该交易包含脚本签名
        if ((coinDataResult.getSignType() & 0x02) == 0x02) {
            scriptEckeys.add(eckey);
        }
        SignatureUtil.createTransactionSignture(tx, scriptEckeys, signEckeys);
        // 保存未确认交易到本地账户
        Result saveResult = verifyAndSaveUnconfirmedTransaction(tx);
        if (saveResult.isFailed()) {
            if (KernelErrorCode.DATA_SIZE_ERROR.getCode().equals(saveResult.getErrorCode().getCode())) {
                // 重新算一次交易(不超出最大交易数据大小下)的最大金额
                Result rs = getMaxAmountOfOnce(from, tx, TransactionFeeCalculator.MIN_PRICE_PRE_1024_BYTES);
                if (rs.isSuccess()) {
                    Na maxAmount = (Na) rs.getData();
                    rs = Result.getFailed(KernelErrorCode.DATA_SIZE_ERROR_EXTEND);
                    rs.setMsg(rs.getMsg() + maxAmount.toDouble());
                }
                return rs;
            }
            return saveResult;
        }
        Result sendResult = transactionService.broadcastTx(tx);
        if (sendResult.isFailed()) {
            this.deleteTransaction(tx);
            return sendResult;
        }
        return Result.getSuccess().setData(tx.getHash().getDigestHex());
    } catch (NulsException e) {
        Log.error(e);
        return Result.getFailed(e.getErrorCode());
    } catch (IOException e) {
        Log.error(e);
        return Result.getFailed(KernelErrorCode.IO_ERROR);
    }
}