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

Example 16 with Coin

use of co.rsk.bitcoinj.core.Coin 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 17 with Coin

use of co.rsk.bitcoinj.core.Coin 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);
        }
    }
}

Example 18 with Coin

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

the class VoteFeePerKbChangeTest method voteFeePerKbChange_unauthorized.

@Test
public void voteFeePerKbChange_unauthorized() throws VMException {
    BridgeStorageProviderInitializer storageInitializer = Helper.buildNoopInitializer();
    Coin genesisFeePerKB = BridgeRegTestConstants.getInstance().getGenesisFeePerKb();
    ABIEncoder abiEncoder = (int executionIndex) -> Bridge.VOTE_FEE_PER_KB.encode(BigInteger.valueOf(Helper.randomCoin(Coin.MILLICOIN, 1, 100).getValue()));
    TxBuilder txBuilder = (int executionIndex) -> {
        String generator = "unauthorized";
        ECKey sender = ECKey.fromPrivate(HashUtil.keccak256(generator.getBytes(StandardCharsets.UTF_8)));
        return Helper.buildTx(sender);
    };
    ExecutionStats stats = new ExecutionStats("voteFeePerKbChange_unauthorized");
    executeAndAverage("voteFeePerKbChange_unauthorized", 1000, abiEncoder, storageInitializer, txBuilder, Helper.getRandomHeightProvider(10), stats, ((environment, callResult) -> {
        Assert.assertEquals(genesisFeePerKB.getValue(), ((Bridge) environment.getContract()).getFeePerKb(null));
    }));
    BridgePerformanceTest.addStats(stats);
}

Example 19 with Coin

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

the class ReleaseBtcTest method releaseBtc.

@Test
public void releaseBtc() throws IOException {
    int minCentsBtc = 5;
    int maxCentsBtc = 100;
    final NetworkParameters parameters = NetworkParameters.fromID(NetworkParameters.ID_REGTEST);
    BridgeStorageProviderInitializer storageInitializer = (BridgeStorageProvider provider, Repository repository, int executionIndex) -> {
        ReleaseRequestQueue queue;
        try {
            queue = provider.getReleaseRequestQueue();
        } catch (Exception e) {
            throw new RuntimeException("Unable to gather release request queue");
        }
        for (int i = 0; i < Helper.randomInRange(10, 100); i++) {
            Coin value = Coin.CENT.multiply(Helper.randomInRange(minCentsBtc, maxCentsBtc));
            queue.add(new BtcECKey().toAddress(parameters), value);
        }
    };
    final byte[] releaseBtcEncoded = Bridge.RELEASE_BTC.encode();
    ABIEncoder abiEncoder = (int executionIndex) -> releaseBtcEncoded;
    TxBuilder txBuilder = (int executionIndex) -> {
        long satoshis = Coin.CENT.multiply(Helper.randomInRange(minCentsBtc, maxCentsBtc)).getValue();
        BigInteger weis = Denomination.satoshisToWeis(BigInteger.valueOf(satoshis));
        ECKey sender = new ECKey();
        return Helper.buildSendValueTx(sender, weis);
    };
    ExecutionStats stats = new ExecutionStats("releaseBtc");
    executeAndAverage("releaseBtc", 1000, abiEncoder, storageInitializer, txBuilder, Helper.getRandomHeightProvider(10), stats);
    BridgePerformanceTest.addStats(stats);
}