Examples with TransactionViewModel com.iota.iri.controllers.TransactionViewModel used on opensource projects

Example 21 with TransactionViewModel

use of com.iota.iri.controllers.TransactionViewModel in project iri by iotaledger.

the class Node method replyToRequest.

public void replyToRequest(Hash requestedHash, Neighbor neighbor) {
    TransactionViewModel transactionViewModel = null;
    Hash transactionPointer;
    // retrieve requested transaction
    if (requestedHash.equals(Hash.NULL_HASH)) {
        // Random Tip Request
        try {
            if (transactionRequester.numberOfTransactionsToRequest() > 0 && rnd.nextDouble() < P_REPLY_RANDOM_TIP) {
                neighbor.incRandomTransactionRequests();
                transactionPointer = getRandomTipPointer();
                transactionViewModel = TransactionViewModel.fromHash(tangle, transactionPointer);
            } else {
                // no tx to request, so no random tip will be sent as a reply.
                return;
            }
        } catch (Exception e) {
            log.error("Error getting random tip.", e);
        }
    } else {
        // find requested trytes
        try {
            // transactionViewModel = TransactionViewModel.find(Arrays.copyOf(requestedHash.bytes(), TransactionRequester.REQUEST_HASH_SIZE));
            transactionViewModel = TransactionViewModel.fromHash(tangle, new Hash(requestedHash.bytes(), 0, TransactionRequester.REQUEST_HASH_SIZE));
        // log.debug("Requested Hash: " + requestedHash + " \nFound: " + transactionViewModel.getHash());
        } catch (Exception e) {
            log.error("Error while searching for transaction.", e);
        }
    }
    if (transactionViewModel != null && transactionViewModel.getType() == TransactionViewModel.FILLED_SLOT) {
        // send trytes back to neighbor
        try {
            sendPacket(sendingPacket, transactionViewModel, neighbor);
        } catch (Exception e) {
            log.error("Error fetching transaction to request.", e);
        }
    } else {
        // trytes not found
        if (!requestedHash.equals(Hash.NULL_HASH) && rnd.nextDouble() < P_PROPAGATE_REQUEST) {
            // request is an actual transaction and missing in request queue add it.
            try {
                transactionRequester.requestTransaction(requestedHash, false);
            } catch (Exception e) {
                log.error("Error adding transaction to request.", e);
            }
        }
    }
}

Example 22 with TransactionViewModel

use of com.iota.iri.controllers.TransactionViewModel in project iri by iotaledger.

the class TransactionValidator method validate.

public static TransactionViewModel validate(final int[] trits, int minWeightMagnitude) {
    TransactionViewModel transactionViewModel = new TransactionViewModel(trits, Hash.calculate(trits, 0, trits.length, SpongeFactory.create(SpongeFactory.Mode.CURLP81)));
    runValidation(transactionViewModel, minWeightMagnitude);
    return transactionViewModel;
}

Example 23 with TransactionViewModel

use of com.iota.iri.controllers.TransactionViewModel in project iri by iotaledger.

the class BundleValidator method loadTransactionsFromTangle.

private static Map<Hash, TransactionViewModel> loadTransactionsFromTangle(Tangle tangle, TransactionViewModel tail) {
    final Map<Hash, TransactionViewModel> bundleTransactions = new HashMap<>();
    final Hash bundleHash = tail.getBundleHash();
    try {
        TransactionViewModel tx = tail;
        long i = 0, end = tx.lastIndex();
        do {
            bundleTransactions.put(tx.getHash(), tx);
            tx = tx.getTrunkTransaction(tangle);
        } while (i++ < end && tx.getCurrentIndex() != 0 && tx.getBundleHash().equals(bundleHash));
    } catch (Exception e) {
        e.printStackTrace();
    }
    return bundleTransactions;
}