public static boolean isSelectable(Transaction tx) {
// Only pick chain-included transactions, or transactions that are ours and pending.
TransactionConfidence confidence = tx.getConfidence();
TransactionConfidence.ConfidenceType type = confidence.getConfidenceType();
return type.equals(TransactionConfidence.ConfidenceType.BUILDING)
|| type.equals(TransactionConfidence.ConfidenceType.PENDING)
&& confidence.getSource().equals(TransactionConfidence.Source.SELF)
&&
// In regtest mode we expect to have only one peer, so we won't see transactions
// propagate.
// TODO: The value 1 below dates from a time when transactions we broadcast *to* were
// counted, set to 0
(confidence.numBroadcastPeers() > 1
|| tx.getParams().getId().equals(NetworkParameters.ID_REGTEST));
}
private static void writeConfidence(
Protos.Transaction.Builder txBuilder,
TransactionConfidence confidence,
Protos.TransactionConfidence.Builder confidenceBuilder) {
synchronized (confidence) {
confidenceBuilder.setType(
Protos.TransactionConfidence.Type.valueOf(confidence.getConfidenceType().getValue()));
if (confidence.getConfidenceType() == ConfidenceType.BUILDING) {
confidenceBuilder.setAppearedAtHeight(confidence.getAppearedAtChainHeight());
confidenceBuilder.setDepth(confidence.getDepthInBlocks());
}
if (confidence.getConfidenceType() == ConfidenceType.DEAD) {
// Copy in the overriding transaction, if available.
// (A dead coinbase transaction has no overriding transaction).
if (confidence.getOverridingTransaction() != null) {
Sha256Hash overridingHash = confidence.getOverridingTransaction().getHash();
confidenceBuilder.setOverridingTransaction(hashToByteString(overridingHash));
}
}
TransactionConfidence.Source source = confidence.getSource();
switch (source) {
case SELF:
confidenceBuilder.setSource(Protos.TransactionConfidence.Source.SOURCE_SELF);
break;
case NETWORK:
confidenceBuilder.setSource(Protos.TransactionConfidence.Source.SOURCE_NETWORK);
break;
case UNKNOWN:
// Fall through.
default:
confidenceBuilder.setSource(Protos.TransactionConfidence.Source.SOURCE_UNKNOWN);
break;
}
}
for (ListIterator<PeerAddress> it = confidence.getBroadcastBy(); it.hasNext(); ) {
PeerAddress address = it.next();
Protos.PeerAddress proto =
Protos.PeerAddress.newBuilder()
.setIpAddress(ByteString.copyFrom(address.getAddr().getAddress()))
.setPort(address.getPort())
.setServices(address.getServices().longValue())
.build();
confidenceBuilder.addBroadcastBy(proto);
}
txBuilder.setConfidence(confidenceBuilder);
}
private void readConfidence(
Transaction tx,
Protos.TransactionConfidence confidenceProto,
TransactionConfidence confidence)
throws UnreadableWalletException {
// We are lenient here because tx confidence is not an essential part of the wallet.
// If the tx has an unknown type of confidence, ignore.
if (!confidenceProto.hasType()) {
log.warn("Unknown confidence type for tx {}", tx.getHashAsString());
return;
}
ConfidenceType confidenceType;
switch (confidenceProto.getType()) {
case BUILDING:
confidenceType = ConfidenceType.BUILDING;
break;
case DEAD:
confidenceType = ConfidenceType.DEAD;
break;
// These two are equivalent (must be able to read old wallets).
case NOT_IN_BEST_CHAIN:
confidenceType = ConfidenceType.PENDING;
break;
case PENDING:
confidenceType = ConfidenceType.PENDING;
break;
case UNKNOWN:
// Fall through.
default:
confidenceType = ConfidenceType.UNKNOWN;
break;
}
confidence.setConfidenceType(confidenceType);
if (confidenceProto.hasAppearedAtHeight()) {
if (confidence.getConfidenceType() != ConfidenceType.BUILDING) {
log.warn("Have appearedAtHeight but not BUILDING for tx {}", tx.getHashAsString());
return;
}
confidence.setAppearedAtChainHeight(confidenceProto.getAppearedAtHeight());
}
if (confidenceProto.hasDepth()) {
if (confidence.getConfidenceType() != ConfidenceType.BUILDING) {
log.warn("Have depth but not BUILDING for tx {}", tx.getHashAsString());
return;
}
confidence.setDepthInBlocks(confidenceProto.getDepth());
}
if (confidenceProto.hasOverridingTransaction()) {
if (confidence.getConfidenceType() != ConfidenceType.DEAD) {
log.warn("Have overridingTransaction but not OVERRIDDEN for tx {}", tx.getHashAsString());
return;
}
Transaction overridingTransaction = txMap.get(confidenceProto.getOverridingTransaction());
if (overridingTransaction == null) {
log.warn(
"Have overridingTransaction that is not in wallet for tx {}", tx.getHashAsString());
return;
}
confidence.setOverridingTransaction(overridingTransaction);
}
for (Protos.PeerAddress proto : confidenceProto.getBroadcastByList()) {
InetAddress ip;
try {
ip = InetAddress.getByAddress(proto.getIpAddress().toByteArray());
} catch (UnknownHostException e) {
throw new UnreadableWalletException("Peer IP address does not have the right length", e);
}
int port = proto.getPort();
int protocolVersion = tx.getParams().getProtocolVersion();
PeerAddress address = new PeerAddress(ip, port, protocolVersion);
address.setServices(BigInteger.valueOf(proto.getServices()));
confidence.markBroadcastBy(address);
}
switch (confidenceProto.getSource()) {
case SOURCE_SELF:
confidence.setSource(TransactionConfidence.Source.SELF);
break;
case SOURCE_NETWORK:
confidence.setSource(TransactionConfidence.Source.NETWORK);
break;
case SOURCE_UNKNOWN:
// Fall through.
default:
confidence.setSource(TransactionConfidence.Source.UNKNOWN);
break;
}
}
@Test
public void testAppearedAtChainHeightDepthAndWorkDone() throws Exception {
// Test the TransactionConfidence appearedAtChainHeight, depth and workDone field are stored.
BlockChain chain = new BlockChain(params, myWallet, new MemoryBlockStore(params));
final ArrayList<Transaction> txns = new ArrayList<Transaction>(2);
myWallet.addEventListener(
new AbstractWalletEventListener() {
@Override
public void onCoinsReceived(
Wallet wallet, Transaction tx, Coin prevBalance, Coin newBalance) {
txns.add(tx);
}
});
// Start by building two blocks on top of the genesis block.
Block b1 = params.getGenesisBlock().createNextBlock(myAddress);
BigInteger work1 = b1.getWork();
assertTrue(work1.signum() > 0);
Block b2 = b1.createNextBlock(myAddress);
BigInteger work2 = b2.getWork();
assertTrue(work2.signum() > 0);
assertTrue(chain.add(b1));
assertTrue(chain.add(b2));
// We now have the following chain:
// genesis -> b1 -> b2
// Check the transaction confidence levels are correct before wallet roundtrip.
Threading.waitForUserCode();
assertEquals(2, txns.size());
TransactionConfidence confidence0 = txns.get(0).getConfidence();
TransactionConfidence confidence1 = txns.get(1).getConfidence();
assertEquals(1, confidence0.getAppearedAtChainHeight());
assertEquals(2, confidence1.getAppearedAtChainHeight());
assertEquals(2, confidence0.getDepthInBlocks());
assertEquals(1, confidence1.getDepthInBlocks());
// Roundtrip the wallet and check it has stored the depth and workDone.
Wallet rebornWallet = roundTrip(myWallet);
Set<Transaction> rebornTxns = rebornWallet.getTransactions(false);
assertEquals(2, rebornTxns.size());
// The transactions are not guaranteed to be in the same order so sort them to be in chain
// height order if required.
Iterator<Transaction> it = rebornTxns.iterator();
Transaction txA = it.next();
Transaction txB = it.next();
Transaction rebornTx0, rebornTx1;
if (txA.getConfidence().getAppearedAtChainHeight() == 1) {
rebornTx0 = txA;
rebornTx1 = txB;
} else {
rebornTx0 = txB;
rebornTx1 = txA;
}
TransactionConfidence rebornConfidence0 = rebornTx0.getConfidence();
TransactionConfidence rebornConfidence1 = rebornTx1.getConfidence();
assertEquals(1, rebornConfidence0.getAppearedAtChainHeight());
assertEquals(2, rebornConfidence1.getAppearedAtChainHeight());
assertEquals(2, rebornConfidence0.getDepthInBlocks());
assertEquals(1, rebornConfidence1.getDepthInBlocks());
}