Android Open Source - bitfynd-wallet-android Upgrade Wallet Service

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Copyright 2014 the original author or authors.
 */*from  www .j a v  a  2  s .  com*/
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package de.schildbach.wallet.service;

import javax.annotation.Nonnull;

import org.bitcoinj.core.Wallet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import android.app.IntentService;
import android.content.Context;
import android.content.Intent;
import de.schildbach.wallet.WalletApplication;

/**
 * This service upgrades the wallet to an HD wallet. Use {@link #startUpgrade(Context)} to start the process.
 * 
 * It will upgrade and then hand over to {@Link BlockchainService} to pre-generate the look-ahead keys. If the
 * wallet is already upgraded, it will do nothing.
 * 
 * @author Andreas Schildbach
 */
public final class UpgradeWalletService extends IntentService
{
  public static void startUpgrade(@Nonnull final Context context)
  {
    context.startService(new Intent(context, UpgradeWalletService.class));
  }

  private WalletApplication application;

  private static final Logger log = LoggerFactory.getLogger(UpgradeWalletService.class);

  public UpgradeWalletService()
  {
    super(UpgradeWalletService.class.getName());

    setIntentRedelivery(true);
  }

  @Override
  public void onCreate()
  {
    super.onCreate();

    application = (WalletApplication) getApplication();

  }

  @Override
  protected void onHandleIntent(final Intent intent)
  {
    final Wallet wallet = application.getWallet();

    if (wallet.isDeterministicUpgradeRequired())
    {
      log.info("detected non-HD wallet, upgrading");

      // upgrade wallet to HD
      wallet.upgradeToDeterministic(null);

      // let other service pre-generate look-ahead keys
      application.startBlockchainService(false);
    }

    maybeUpgradeToSecureChain(wallet);
  }

  private void maybeUpgradeToSecureChain(final Wallet wallet)
  {
    try
    {
      wallet.doMaintenance(null, false);

      // let other service pre-generate look-ahead keys
      application.startBlockchainService(false);
    }
    catch (final Exception x)
    {
      log.error("failed doing wallet maintenance", x);
    }
  }
}

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