private static void sendTransactionsToListener(
StoredBlock block,
NewBlockType blockType,
BlockChainListener listener,
int relativityOffset,
List<Transaction> transactions,
boolean clone,
Set<Sha256Hash> falsePositives)
throws VerificationException {
for (Transaction tx : transactions) {
try {
if (listener.isTransactionRelevant(tx)) {
falsePositives.remove(tx.getHash());
if (clone) tx = new Transaction(tx.params, tx.bitcoinSerialize());
listener.receiveFromBlock(tx, block, blockType, relativityOffset++);
}
} catch (ScriptException e) {
// We don't want scripts we don't understand to break the block chain so just note that this
// tx was
// not scanned here and continue.
log.warn("Failed to parse a script: " + e.toString());
} catch (ProtocolException e) {
// Failed to duplicate tx, should never happen.
throw new RuntimeException(e);
}
}
}
private static void informListenerForNewTransactions(
Block block,
NewBlockType newBlockType,
@Nullable List<Sha256Hash> filteredTxHashList,
@Nullable Map<Sha256Hash, Transaction> filteredTxn,
StoredBlock newStoredBlock,
boolean first,
BlockChainListener listener,
Set<Sha256Hash> falsePositives)
throws VerificationException {
if (block.transactions != null) {
// If this is not the first wallet, ask for the transactions to be duplicated before being
// given
// to the wallet when relevant. This ensures that if we have two connected wallets and a tx
// that
// is relevant to both of them, they don't end up accidentally sharing the same object (which
// can
// result in temporary in-memory corruption during re-orgs). See bug 257. We only duplicate in
// the case of multiple wallets to avoid an unnecessary efficiency hit in the common case.
sendTransactionsToListener(
newStoredBlock, newBlockType, listener, 0, block.transactions, !first, falsePositives);
} else if (filteredTxHashList != null) {
checkNotNull(filteredTxn);
// We must send transactions to listeners in the order they appeared in the block - thus we
// iterate over the
// set of hashes and call sendTransactionsToListener with individual txn when they have not
// already been
// seen in loose broadcasts - otherwise notifyTransactionIsInBlock on the hash.
int relativityOffset = 0;
for (Sha256Hash hash : filteredTxHashList) {
Transaction tx = filteredTxn.get(hash);
if (tx != null) {
sendTransactionsToListener(
newStoredBlock,
newBlockType,
listener,
relativityOffset,
Collections.singletonList(tx),
!first,
falsePositives);
} else {
if (listener.notifyTransactionIsInBlock(
hash, newStoredBlock, newBlockType, relativityOffset)) {
falsePositives.remove(hash);
}
}
relativityOffset++;
}
}
}