Examples with BlockchainService de.schildbach.wallet.service.BlockchainService used on opensource projects

Example 1 with BlockchainService

use of de.schildbach.wallet.service.BlockchainService in project bitcoin-wallet by bitcoin-wallet.

the class AbstractWalletActivityViewModel method broadcastTransaction.

public ListenableFuture<Transaction> broadcastTransaction(final Transaction tx) throws VerificationException {
    final SettableFuture<Transaction> future = SettableFuture.create();
    wallet.observeForever(new Observer<Wallet>() {

        @Override
        public void onChanged(final Wallet wallet) {
            blockchainService.observeForever(new Observer<BlockchainService>() {

                @Override
                public void onChanged(final BlockchainService blockchainService) {
                    if (wallet.isTransactionRelevant(tx)) {
                        wallet.receivePending(tx, null);
                        final TransactionBroadcast broadcast = blockchainService.broadcastTransaction(tx);
                        if (broadcast != null) {
                            broadcast.future().addListener(() -> {
                                log.info("broadcasting transaction {} complete, dropping all peers", tx.getTxId());
                                blockchainService.dropAllPeers();
                            }, Threading.SAME_THREAD);
                            future.setFuture(broadcast.future());
                        } else {
                            log.info("impediments; will send {} later", tx.getTxId());
                            future.cancel(false);
                        }
                    } else {
                        log.info("tx {} irrelevant", tx.getTxId());
                        future.cancel(false);
                    }
                    AbstractWalletActivityViewModel.this.blockchainService.removeObserver(this);
                }
            });
            AbstractWalletActivityViewModel.this.wallet.removeObserver(this);
        }
    });
    return future;
}