private BlockchainImpl createBlockchain(Genesis genesis) {
IndexedBlockStore blockStore = new IndexedBlockStore();
blockStore.init(new HashMapDB(), new HashMapDB());
Repository repository = new RepositoryImpl(new HashMapDB(), new HashMapDB());
ProgramInvokeFactoryImpl programInvokeFactory = new ProgramInvokeFactoryImpl();
EthereumListenerAdapter listener = new EthereumListenerAdapter();
BlockchainImpl blockchain = new BlockchainImpl(blockStore, repository);
blockchain.setParentHeaderValidator(new DependentBlockHeaderRuleAdapter());
blockchain.setProgramInvokeFactory(programInvokeFactory);
programInvokeFactory.setBlockchain(blockchain);
blockchain.byTest = true;
PendingStateImpl pendingState = new PendingStateImpl(listener, blockchain);
pendingState.init();
pendingState.setBlockchain(blockchain);
blockchain.setPendingState(pendingState);
Repository track = repository.startTracking();
for (ByteArrayWrapper key : genesis.getPremine().keySet()) {
track.createAccount(key.getData());
track.addBalance(key.getData(), genesis.getPremine().get(key).getBalance());
}
for (Pair<byte[], BigInteger> acc : initialBallances) {
track.createAccount(acc.getLeft());
track.addBalance(acc.getLeft(), acc.getRight());
}
track.commit();
blockStore.saveBlock(genesis, genesis.getCumulativeDifficulty(), true);
blockchain.setBestBlock(genesis);
blockchain.setTotalDifficulty(genesis.getCumulativeDifficulty());
return blockchain;
}
/**
* Insert/delete operations on a Trie structure leaves the old nodes in cache, this method scans
* the cache and removes them. The method is not thread safe, the tree should not be modified
* during the cleaning process.
*/
public void cleanCache() {
CollectFullSetOfNodes collectAction = new CollectFullSetOfNodes();
long startTime = System.currentTimeMillis();
this.scanTree(this.getRootHash(), collectAction);
Set<byte[]> hashSet = collectAction.getCollectedHashes();
Map<ByteArrayWrapper, Node> nodes = this.getCache().getNodes();
Set<ByteArrayWrapper> toRemoveSet = new HashSet<>();
for (ByteArrayWrapper key : nodes.keySet())
if (!hashSet.contains(key.getData())) toRemoveSet.add(key);
for (ByteArrayWrapper key : toRemoveSet) {
this.getCache().delete(key.getData());
if (logger.isTraceEnabled())
logger.trace("Garbage collected node: [{}]", Hex.toHexString(key.getData()));
}
logger.info("Garbage collected node list, size: [{}]", toRemoveSet.size());
logger.info("Garbage collection time: [{}ms]", System.currentTimeMillis() - startTime);
}
