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BsqWalletV2: Implement send BSQ

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The sendBsq method creates a BSQ transaction, signs the BSQ inputs, and
adds the requires BTC mining fees to the transcation.
This commit is contained in:
Alva Swanson 2024-11-07 20:50:31 +00:00
parent fbebdb7d3c
commit 6722d9d691
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1 changed files with 68 additions and 0 deletions
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core/src/main/java/bisq/core/btc/wallet/BsqWalletV2.java Normal file
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package bisq.core.btc.wallet;
import bisq.core.btc.exceptions.BsqChangeBelowDustException;
import org.bitcoinj.core.Address;
import org.bitcoinj.core.Coin;
import org.bitcoinj.core.InsufficientMoneyException;
import org.bitcoinj.core.NetworkParameters;
import org.bitcoinj.core.PeerGroup;
import org.bitcoinj.core.Transaction;
import org.bitcoinj.core.TransactionBroadcast;
import org.bitcoinj.wallet.CoinSelection;
import org.bitcoinj.wallet.Wallet;
import lombok.extern.slf4j.Slf4j;
import static com.google.common.base.Preconditions.checkArgument;
@Slf4j
public class BsqWalletV2 {
private final NetworkParameters networkParams;
private final PeerGroup peerGroup;
private final BtcWalletV2 btcWallet;
private final Wallet bsqWallet;
private final BsqCoinSelector bsqCoinSelector;
public BsqWalletV2(NetworkParameters networkParams,
PeerGroup peerGroup,
BtcWalletV2 btcWallet,
Wallet bsqWallet,
BsqCoinSelector bsqCoinSelector) {
this.networkParams = networkParams;
this.peerGroup = peerGroup;
this.btcWallet = btcWallet;
this.bsqWallet = bsqWallet;
this.bsqCoinSelector = bsqCoinSelector;
}
public TransactionBroadcast sendBsq(Address receiverAddress,
Coin receiverAmount,
Coin txFee) throws InsufficientMoneyException, BsqChangeBelowDustException {
checkArgument(Restrictions.isAboveDust(receiverAmount),
"The amount is too low (dust limit).");
Transaction bsqTx = new Transaction(networkParams);
bsqTx.addOutput(receiverAmount, receiverAddress);
CoinSelection selection = bsqCoinSelector.select(receiverAmount, bsqWallet.calculateAllSpendCandidates());
selection.gathered.forEach(bsqTx::addInput);
Coin change = bsqCoinSelector.getChange(receiverAmount, selection);
if (Restrictions.isAboveDust(change)) {
Address changeAddress = bsqWallet.freshReceiveAddress();
bsqTx.addOutput(change, changeAddress);
} else if (!change.isZero()) {
String msg = "BSQ change output is below dust limit. outputValue=" + change.value / 100 + " BSQ";
log.warn(msg);
throw new BsqChangeBelowDustException(msg, change);
}
BisqTransactionSigner.sign(bsqWallet, bsqTx, 0);
bsqCoinSelector.setUtxoCandidates(null); // We reuse the selectors. Reset the transactionOutputCandidates field
Transaction finalTx = btcWallet.addMiningFeesToBsqTx(bsqTx, txFee);
return peerGroup.broadcastTransaction(finalTx);
}
}