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Add a program that just loads a wallet, runs through the block chain, and then saves/prints out the resulting wallet at the end.

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Mike Hearn 2011-06-14 13:42:41 +00:00
parent 320933bb70
commit b5d04a36e1
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src/com/google/bitcoin/examples/RefreshWallet.java Normal file
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/*
* Copyright 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.bitcoin.examples;
import com.google.bitcoin.core.*;
import java.io.File;
import java.math.BigInteger;
import java.net.InetAddress;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* RefreshWallet loads a wallet, then processes the block chain to update the transaction pools within it.
*/
public class RefreshWallet {
public static void main(String[] args) throws Exception {
File file = new File(args[0]);
Wallet wallet = Wallet.loadFromFile(file);
System.out.println(wallet.toString());
// Set up the components and link them together.
final NetworkParameters params = NetworkParameters.testNet();
BlockStore blockStore = new MemoryBlockStore(params);
NetworkConnection conn = new NetworkConnection(InetAddress.getLocalHost(), params,
blockStore.getChainHead().getHeight(), 60000);
BlockChain chain = new BlockChain(params, wallet, blockStore);
Peer peer = new Peer(params, conn, chain);
peer.start();
wallet.addEventListener(new WalletEventListener() {
public void onCoinsReceived(Wallet w, Transaction tx, BigInteger prevBalance, BigInteger newBalance) {
System.out.println("\nReceived tx " + tx.getHashAsString());
System.out.println(tx.toString());
}
});
// Now download and process the block chain.
CountDownLatch progress = peer.startBlockChainDownload();
long max = progress.getCount(); // Racy but no big deal.
if (max > 0) {
System.out.println("Downloading block chain. " + (max > 1000 ? "This may take a while." : ""));
long current = max;
while (current > 0) {
double pct = 100.0 - (100.0 * (current / (double) max));
System.out.println(String.format("Chain download %d%% done", (int) pct));
progress.await(1, TimeUnit.SECONDS);
current = progress.getCount();
}
}
peer.disconnect();
wallet.saveToFile(file);
System.out.println("\nDone!\n");
System.out.println(wallet.toString());
}
}