Examples with Transaction org.bitcoinj.core.Transaction used on opensource projects

Example 61 with Transaction

use of org.bitcoinj.core.Transaction in project catena-java by alinush.

the class CatenaUtils method getPrevCatenaTx.

public static Transaction getPrevCatenaTx(Wallet wallet, Sha256Hash currHash) {
    Transaction currTxn = wallet.getTransaction(currHash);
    TransactionOutput spentOutput = currTxn.getInput(0).getConnectedOutput();
    if (spentOutput != null && spentOutput.getParentTransaction() != null) {
        return spentOutput.getParentTransaction();
    } else {
        return null;
    }
}

Example 62 with Transaction

use of org.bitcoinj.core.Transaction in project catena-java by alinush.

the class WriteChainTest method testFees.

// @Test
public void testFees() throws InsufficientMoneyException, IOException, InterruptedException {
    log.info("Test: Correct TXN fee");
    String[] s1 = TestUtils.generateStatements(1, 0);
    String[] s2 = TestUtils.generateStatements(1, 1);
    // Issue a TXN with the default fee
    Coin defaultFeePerKb = Context.get().getFeePerKb();
    log.debug("Default fee per KB: " + defaultFeePerKb.toFriendlyString());
    issueStatements(s1);
    // Set the fee per KB
    Coin customFeePerKb = Coin.SATOSHI.multiply(100000);
    log.debug("Custom fee per KB: " + customFeePerKb.toFriendlyString());
    catenaServer.setFeePerKb(customFeePerKb);
    // Issue a TXN with a different fee
    issueStatements(s2);
    // Check the TXNs fee
    Iterator<CatenaStatement> it = catenaServer.getCatenaWallet().statementIterator(true);
    CatenaStatement stmt1 = it.next();
    CatenaStatement stmt2 = it.next();
    Transaction tx1 = catenaServer.getCatenaWallet().getTransaction(stmt1.getTxHash());
    Transaction tx2 = catenaServer.getCatenaWallet().getTransaction(stmt2.getTxHash());
    log.debug("Default fee TXN #1: " + tx1);
    log.debug("Custom fee TXN #1: " + tx2);
    // FIXME: This fails because bitcoinj pays the wrong fee in calculateFee (check later)
    // assertCorrectFee(defaultFeePerKb, tx1);
    // assertCorrectFee(customFeePerKb, tx2);
    // There should be no extra statements after
    assertFalse(it.hasNext());
}

Example 63 with Transaction

use of org.bitcoinj.core.Transaction in project catena-java by alinush.

the class WriteChainTest method testTxnSize.

@Test
public void testTxnSize() throws InsufficientMoneyException, IOException, InterruptedException {
    log.info("Test: Average TXN size");
    int numStmts = 10;
    byte[][] s = new byte[numStmts][Sha256Hash.LENGTH];
    for (int i = 0; i < numStmts; i++) {
        byte[] hash = Sha256Hash.of(new String("" + i).getBytes()).getBytes();
        assertEquals(Sha256Hash.LENGTH, hash.length);
        System.arraycopy(hash, 0, s[i], 0, hash.length);
        issueStatement(s[i]);
    }
    Iterator<CatenaStatement> it = catenaServer.getCatenaWallet().statementIterator(true);
    int i = 0;
    int min = Integer.MAX_VALUE, max = Integer.MIN_VALUE;
    double avg = 0.0;
    while (it.hasNext()) {
        i++;
        CatenaStatement stmt = it.next();
        Transaction tx = catenaServer.getCatenaWallet().getTransaction(stmt.getTxHash());
        int size = tx.unsafeBitcoinSerialize().length;
        // 1000 bytes = 1 kB
        // log.debug("TXN #{} size in kB: {}", i, ((double)size)/1000.0);
        log.debug("TXN #{} size in bytes: {} (OP_RETURN data: {} bytes): {}", i, size, CatenaUtils.getCatenaTxData(tx).length, tx);
        min = min > size ? size : min;
        max = max < size ? size : max;
        avg += size;
    }
    avg = avg / numStmts;
    log.info("Min: {}, Max: {}, Avg: {}", min, max, avg);
}

Example 64 with Transaction

use of org.bitcoinj.core.Transaction in project catena-java by alinush.

the class SemaphoredStatementListener method onStatementAppended.

@Override
public void onStatementAppended(CatenaStatement s) {
    if (semAppended != null) {
        Transaction tx = wallet.getTransaction(s.getTxHash());
        log.info("New statement received: '{}', \n\ttxid={}, \n\tprev={}", s.getAsString(), s.getTxHash(), tx.getInput(0).getConnectedOutput().getOutPointFor().getHash());
        semAppended.release();
    }
}

Example 65 with Transaction

use of org.bitcoinj.core.Transaction in project bitcoin-wallet by bitcoin-wallet.

the class SweepWalletFragment method onCreate.

@Override
public void onCreate(final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.fragmentManager = getChildFragmentManager();
    setHasOptionsMenu(true);
    if (!Constants.ENABLE_SWEEP_WALLET)
        throw new IllegalStateException("ENABLE_SWEEP_WALLET is disabled");
    walletActivityViewModel = new ViewModelProvider(activity).get(AbstractWalletActivityViewModel.class);
    walletActivityViewModel.wallet.observe(this, wallet -> updateView());
    viewModel = new ViewModelProvider(this).get(SweepWalletViewModel.class);
    viewModel.getDynamicFees().observe(this, dynamicFees -> updateView());
    viewModel.progress.observe(this, new ProgressDialogFragment.Observer(fragmentManager));
    viewModel.privateKeyToSweep.observe(this, privateKeyToSweep -> updateView());
    viewModel.walletToSweep.observe(this, walletToSweep -> {
        if (walletToSweep != null) {
            balanceView.setVisibility(View.VISIBLE);
            final MonetaryFormat btcFormat = config.getFormat();
            final MonetarySpannable balanceSpannable = new MonetarySpannable(btcFormat, walletToSweep.getBalance(BalanceType.ESTIMATED));
            balanceSpannable.applyMarkup(null, null);
            final SpannableStringBuilder balance = new SpannableStringBuilder(balanceSpannable);
            balance.insert(0, ": ");
            balance.insert(0, getString(R.string.sweep_wallet_fragment_balance));
            balanceView.setText(balance);
        } else {
            balanceView.setVisibility(View.GONE);
        }
        updateView();
    });
    viewModel.sentTransaction.observe(this, transaction -> {
        if (viewModel.state == SweepWalletViewModel.State.SENDING) {
            final TransactionConfidence confidence = transaction.getConfidence();
            final ConfidenceType confidenceType = confidence.getConfidenceType();
            final int numBroadcastPeers = confidence.numBroadcastPeers();
            if (confidenceType == ConfidenceType.DEAD)
                setState(SweepWalletViewModel.State.FAILED);
            else if (numBroadcastPeers > 1 || confidenceType == ConfidenceType.BUILDING)
                setState(SweepWalletViewModel.State.SENT);
        }
        updateView();
    });
    viewModel.showDialog.observe(this, new DialogEvent.Observer(activity));
    viewModel.showDialogWithRetryRequestBalance.observe(this, new DialogEvent.Observer(activity) {

        @Override
        protected void onBuildButtons(final DialogBuilder dialog) {
            dialog.setPositiveButton(R.string.button_retry, (d, which) -> requestWalletBalance());
            dialog.setNegativeButton(R.string.button_dismiss, null);
        }
    });
    backgroundThread = new HandlerThread("backgroundThread", Process.THREAD_PRIORITY_BACKGROUND);
    backgroundThread.start();
    backgroundHandler = new Handler(backgroundThread.getLooper());
    if (savedInstanceState == null) {
        final Intent intent = activity.getIntent();
        if (intent.hasExtra(SweepWalletActivity.INTENT_EXTRA_KEY)) {
            final PrefixedChecksummedBytes privateKeyToSweep = (PrefixedChecksummedBytes) intent.getSerializableExtra(SweepWalletActivity.INTENT_EXTRA_KEY);
            viewModel.privateKeyToSweep.setValue(privateKeyToSweep);
            // delay until fragment is resumed
            handler.post(maybeDecodeKeyRunnable);
        }
    }
}