/*
* Copyright (c) [2016] [ <ether.camp> ]
* This file is part of the ethereumJ library.
*
* The ethereumJ library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The ethereumJ library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the ethereumJ library. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ethereum.sync;
import org.ethereum.core.BlockHeaderWrapper;
import org.ethereum.core.BlockWrapper;
import org.ethereum.core.Blockchain;
import org.ethereum.db.DbFlushManager;
import org.ethereum.db.IndexedBlockStore;
import org.ethereum.util.ByteUtil;
import org.ethereum.validator.BlockHeaderValidator;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;
import java.math.BigInteger;
import java.util.List;
/**
* Created by Anton Nashatyrev on 27.10.2016.
*/
@Component
@Lazy
public class FastSyncDownloader extends BlockDownloader {
private final static Logger logger = LoggerFactory.getLogger("sync");
@Autowired
SyncPool syncPool;
@Autowired
IndexedBlockStore blockStore;
int counter;
int maxCount;
long t;
@Autowired
public FastSyncDownloader(BlockHeaderValidator headerValidator) {
super(headerValidator);
}
public void startImporting(byte[] fromHash, int count) {
SyncQueueReverseImpl syncQueueReverse = new SyncQueueReverseImpl(fromHash);
init(syncQueueReverse, syncPool);
this.maxCount = count <= 0 ? Integer.MAX_VALUE : count;
}
@Override
protected void pushBlocks(List<BlockWrapper> blockWrappers) {
if (!blockWrappers.isEmpty()) {
for (BlockWrapper blockWrapper : blockWrappers) {
blockStore.saveBlock(blockWrapper.getBlock(), BigInteger.ZERO, true);
counter++;
if (counter >= maxCount) {
logger.info("All requested " + counter + " blocks are downloaded. (last " + blockWrapper.getBlock().getShortDescr() + ")");
stop();
break;
}
}
long c = System.currentTimeMillis();
if (c - t > 5000) {
t = c;
logger.info("FastSync: downloaded " + counter + " blocks so far. Last: " + blockWrappers.get(0).getBlock().getShortDescr());
blockStore.flush();
}
}
}
@Override
protected void pushHeaders(List<BlockHeaderWrapper> headers) {}
@Override
protected int getBlockQueueFreeSize() {
return Integer.MAX_VALUE;
}
// TODO: receipts loading here
public int getDownloadedBlocksCount() {
return counter;
}
@Override
protected void finishDownload() {
blockStore.flush();
}
}