Examples with TransactionInput co.rsk.bitcoinj.core.TransactionInput used on opensource projects

Example 26 with TransactionInput

use of co.rsk.bitcoinj.core.TransactionInput in project rskj by rsksmart.

the class BridgeSupport method adjustBalancesIfChangeOutputWasDust.

/**
 * If federation change output value had to be increased to be non-dust, the federation now has
 * more BTC than it should. So, we burn some sBTC to make balances match.
 *
 * @param btcTx      The btc tx that was just completed
 * @param sentByUser The number of sBTC originaly sent by the user
 */
private void adjustBalancesIfChangeOutputWasDust(BtcTransaction btcTx, Coin sentByUser) {
    if (btcTx.getOutputs().size() <= 1) {
        // If there is no change, do-nothing
        return;
    }
    Coin sumInputs = Coin.ZERO;
    for (TransactionInput transactionInput : btcTx.getInputs()) {
        sumInputs = sumInputs.add(transactionInput.getValue());
    }
    Coin change = btcTx.getOutput(1).getValue();
    Coin spentByFederation = sumInputs.subtract(change);
    if (spentByFederation.isLessThan(sentByUser)) {
        Coin coinsToBurn = sentByUser.subtract(spentByFederation);
        this.transferTo(BURN_ADDRESS, co.rsk.core.Coin.fromBitcoin(coinsToBurn));
    }
}

Example 27 with TransactionInput

use of co.rsk.bitcoinj.core.TransactionInput in project rskj by rsksmart.

the class BridgeSupport method createMigrationTransaction.

private Pair<BtcTransaction, List<UTXO>> createMigrationTransaction(Wallet originWallet, Address destinationAddress) {
    Coin expectedMigrationValue = originWallet.getBalance();
    logger.debug("[createMigrationTransaction] Balance to migrate: {}", expectedMigrationValue);
    for (; ; ) {
        BtcTransaction migrationBtcTx = new BtcTransaction(originWallet.getParams());
        migrationBtcTx.addOutput(expectedMigrationValue, destinationAddress);
        SendRequest sr = SendRequest.forTx(migrationBtcTx);
        sr.changeAddress = destinationAddress;
        sr.feePerKb = getFeePerKb();
        sr.missingSigsMode = Wallet.MissingSigsMode.USE_OP_ZERO;
        sr.recipientsPayFees = true;
        try {
            originWallet.completeTx(sr);
            for (TransactionInput transactionInput : migrationBtcTx.getInputs()) {
                transactionInput.disconnect();
            }
            List<UTXO> selectedUTXOs = originWallet.getUTXOProvider().getOpenTransactionOutputs(originWallet.getWatchedAddresses()).stream().filter(utxo -> migrationBtcTx.getInputs().stream().anyMatch(input -> input.getOutpoint().getHash().equals(utxo.getHash()) && input.getOutpoint().getIndex() == utxo.getIndex())).collect(Collectors.toList());
            return Pair.of(migrationBtcTx, selectedUTXOs);
        } catch (InsufficientMoneyException | Wallet.ExceededMaxTransactionSize | Wallet.CouldNotAdjustDownwards e) {
            expectedMigrationValue = expectedMigrationValue.divide(2);
        } catch (Wallet.DustySendRequested e) {
            throw new IllegalStateException("Retiring federation wallet cannot be emptied", e);
        } catch (UTXOProviderException e) {
            throw new RuntimeException("Unexpected UTXO provider error", e);
        }
    }
}