@Override
public TransactionDetails getTransactionDetails(Sha256Hash txid) {
// Note that this method is not synchronized, and we might fetch the transaction history while
// synchronizing
// accounts. That should be ok as we write to the DB in a sane order.
TransactionEx tex = _backing.getTransaction(txid);
Transaction tx = TransactionEx.toTransaction(tex);
if (tx == null) {
throw new RuntimeException();
}
List<TransactionDetails.Item> inputs = new ArrayList<TransactionDetails.Item>(tx.inputs.length);
if (tx.isCoinbase()) {
// We have a coinbase transaction. Create one input with the sum of the outputs as its value,
// and make the address the null address
long value = 0;
for (TransactionOutput out : tx.outputs) {
value += out.value;
}
inputs.add(new TransactionDetails.Item(Address.getNullAddress(_network), value, true));
} else {
// Populate the inputs
for (TransactionInput input : tx.inputs) {
Sha256Hash parentHash = input.outPoint.hash;
// Get the parent transaction
TransactionOutputEx parentOutput = _backing.getParentTransactionOutput(input.outPoint);
if (parentOutput == null) {
// We never heard about the parent, skip
continue;
}
// Determine the parent address
Address parentAddress;
ScriptOutput parentScript = ScriptOutput.fromScriptBytes(parentOutput.script);
if (parentScript == null) {
// Null address means we couldn't figure out the address, strange script
parentAddress = Address.getNullAddress(_network);
} else {
parentAddress = parentScript.getAddress(_network);
}
inputs.add(new TransactionDetails.Item(parentAddress, parentOutput.value, false));
}
}
// Populate the outputs
TransactionDetails.Item[] outputs = new TransactionDetails.Item[tx.outputs.length];
for (int i = 0; i < tx.outputs.length; i++) {
Address address = tx.outputs[i].script.getAddress(_network);
outputs[i] = new TransactionDetails.Item(address, tx.outputs[i].value, false);
}
return new TransactionDetails(
txid, tex.height, tex.time, inputs.toArray(new TransactionDetails.Item[] {}), outputs);
}
@Override
public synchronized long calculateMaxSpendableAmount(long minerFeeToUse) {
checkNotArchived();
Collection<UnspentTransactionOutput> spendableOutputs = transform(getSpendableOutputs());
long satoshis = 0;
for (UnspentTransactionOutput output : spendableOutputs) {
satoshis += output.value;
}
// Iteratively figure out whether we can send everything by subtracting
// the miner fee for every iteration
while (true) {
satoshis -= minerFeeToUse;
if (satoshis <= 0) {
return 0;
}
// Create transaction builder
StandardTransactionBuilder stb = new StandardTransactionBuilder(_network);
// Try and add the output
try {
// Note, null address used here, we just use it for measuring the
// transaction size
stb.addOutput(Address.getNullAddress(_network), satoshis);
} catch (OutputTooSmallException e1) {
// The amount we try to send is lower than what the network allows
return 0;
}
// Try to create an unsigned transaction
try {
stb.createUnsignedTransaction(
spendableOutputs, getChangeAddress(), new PublicKeyRing(), _network, minerFeeToUse);
// We have enough to pay the fees, return the amount as the maximum
return satoshis;
} catch (InsufficientFundsException e) {
// We cannot send this amount, try again with a little higher fee
continue;
}
}
}
@Override
public List<TransactionOutputSummary> getUnspentTransactionOutputSummary() {
// Note that this method is not synchronized, and we might fetch the transaction history while
// synchronizing
// accounts. That should be ok as we write to the DB in a sane order.
// Get all unspent outputs for this account
Collection<TransactionOutputEx> outputs = _backing.getAllUnspentOutputs();
// Transform it to a list of summaries
List<TransactionOutputSummary> list = new ArrayList<TransactionOutputSummary>();
int blockChainHeight = getBlockChainHeight();
for (TransactionOutputEx output : outputs) {
ScriptOutput script = ScriptOutput.fromScriptBytes(output.script);
Address address;
if (script == null) {
address = Address.getNullAddress(_network);
// This never happens as we have parsed this script before
} else {
address = script.getAddress(_network);
}
int confirmations;
if (output.height == -1) {
confirmations = 0;
} else {
confirmations = Math.max(0, blockChainHeight - output.height + 1);
}
TransactionOutputSummary summary =
new TransactionOutputSummary(
output.outPoint, output.value, output.height, confirmations, address);
list.add(summary);
}
// Sort & return
Collections.sort(list);
return list;
}