Examples with Block io.nuls.core.chain.entity.Block used on opensource projects

Example 6 with Block

use of io.nuls.core.chain.entity.Block in project nuls by nuls-io.

the class BlockStorageService method getBlock.

public Block getBlock(String hash) throws Exception {
    Block block = blockCacheManager.getBlock(hash);
    if (null != block) {
        return block;
    }
    BlockHeader header = getBlockHeader(hash);
    if (null == header) {
        return null;
    }
    List<Transaction> txList = null;
    try {
        txList = ledgerService.getTxList(header.getHeight());
    } catch (Exception e) {
        Log.error(e);
    }
    if (txList.size() != header.getTxCount()) {
        System.out.println();
    }
    return fillBlock(header, txList);
}

Example 7 with Block

use of io.nuls.core.chain.entity.Block in project nuls by nuls-io.

the class BlockMaintenanceThread method getBestCorrectBlock.

private BestCorrectBlock getBestCorrectBlock() {
    BestCorrectBlock resultCorrentInfo = new BestCorrectBlock();
    Block localBestBlock = this.blockService.getLocalBestBlock();
    do {
        if (null == localBestBlock || localBestBlock.getHeader().getHeight() <= 1) {
            break;
        }
        BlockInfo netBestBlockInfo = DistributedBlockInfoRequestUtils.getInstance().request(0, null);
        resultCorrentInfo.setNetBestBlockInfo(netBestBlockInfo);
        if (null == netBestBlockInfo || netBestBlockInfo.getBestHash() == null) {
            break;
        }
        // same to network nodes
        if (netBestBlockInfo.getBestHeight() == localBestBlock.getHeader().getHeight() && netBestBlockInfo.getBestHash().equals(localBestBlock.getHeader().getHash())) {
            break;
        } else if (netBestBlockInfo.getBestHeight() <= localBestBlock.getHeader().getHeight()) {
            if (netBestBlockInfo.getBestHeight() == 0) {
                break;
            }
            // local height is highest
            BlockHeader header = null;
            try {
                header = blockService.getBlockHeader(netBestBlockInfo.getBestHeight());
            } catch (NulsException e) {
                break;
            }
            if (null != header && header.getHash().equals(netBestBlockInfo.getBestHash())) {
                break;
            }
            if (netBestBlockInfo.getNodeIdList().size() == 1) {
                throw new NulsRuntimeException(ErrorCode.FAILED, "node count not enough!");
            }
            Log.warn("Rollback block start height:{},local is highest and wrong!", localBestBlock.getHeader().getHeight());
            // bifurcation
            rollbackBlock(localBestBlock.getHeader().getHeight());
            localBestBlock = this.blockService.getLocalBestBlock();
            break;
        } else {
            netBestBlockInfo = DistributedBlockInfoRequestUtils.getInstance().request(localBestBlock.getHeader().getHeight(), netBestBlockInfo.getNodeIdList());
            if (netBestBlockInfo.getBestHash().equals(localBestBlock.getHeader().getHash())) {
                break;
            }
            if (localBestBlock.getHeader().getHeight() != netBestBlockInfo.getBestHeight()) {
                throw new NulsRuntimeException(ErrorCode.FAILED, "answer not asked!");
            }
            if (netBestBlockInfo.getNodeIdList().size() == 1) {
                throw new NulsRuntimeException(ErrorCode.FAILED, "node count not enough!");
            }
            Log.warn("Rollback block start height:{},local has wrong blocks!", localBestBlock.getHeader().getHeight());
            // bifurcation
            rollbackBlock(localBestBlock.getHeader().getHeight());
            localBestBlock = this.blockService.getLocalBestBlock();
        }
    } while (false);
    resultCorrentInfo.setLocalBestBlock(localBestBlock);
    return resultCorrentInfo;
}

Example 8 with Block

use of io.nuls.core.chain.entity.Block in project nuls by nuls-io.

the class BlockMaintenanceThread method rollbackBlock.

private void rollbackBlock(long startHeight) {
    long height = startHeight - 1;
    Block block = this.blockService.getBlock(height);
    try {
        this.blockService.rollbackBlock(startHeight);
        NulsContext.getInstance().setBestBlock(block);
    } catch (NulsException e) {
        Log.error(e);
        return;
    }
    boolean previousRb = false;
    if (height > 0) {
        NulsContext.getInstance().setBestBlock(block);
        BlockInfo blockInfo = DistributedBlockInfoRequestUtils.getInstance().request(height, null);
        if (null != blockInfo && null != blockInfo.getBestHash() && (!blockInfo.getBestHash().equals(block.getHeader().getHash()) && blockInfo.getBestHeight() == height)) {
            previousRb = true;
        }
    }
    if (previousRb) {
        rollbackBlock(height);
    }
}

Example 9 with Block

use of io.nuls.core.chain.entity.Block in project nuls by nuls-io.

the class BlockPersistenceThread method doPersistence.

private void doPersistence(long height) throws IOException {
    Block block = blockManager.getBlock(height);
    if (null == block) {
        List<Node> nodeList = networkService.getAvailableNodes();
        if (nodeList == null || nodeList.isEmpty()) {
            return;
        }
        List<String> nodeIdList = new ArrayList<>();
        for (Node node : nodeList) {
            nodeIdList.add(node.getId());
        }
        try {
            BlockBatchDownloadUtils.getInstance().request(nodeIdList, height, height);
        } catch (InterruptedException e) {
            Log.error(e);
        }
        return;
    }
    if (block.getTxs().isEmpty()) {
        // todo why
        Log.warn("block has no tx!");
        blockManager.removeBlock(block.getHeader().getHash().getDigestHex());
        return;
    }
    boolean isSuccess = blockService.saveBlock(block);
    if (isSuccess) {
        blockManager.removeBlock(block.getHeader().getHash().getDigestHex());
        blockManager.setStoredHeight(height);
        txCacheManager.removeTxList(block.getTxHashList());
    }
}

Example 10 with Block

use of io.nuls.core.chain.entity.Block in project nuls by nuls-io.

the class ConsensusMeetingRunner method checkBestHash.

private boolean checkBestHash() {
    BlockInfo blockInfo;
    try {
        blockInfo = DistributedBlockInfoRequestUtils.getInstance().request(-1, null);
    } catch (Exception e) {
        return false;
    }
    if (blockInfo == null || blockInfo.getBestHash() == null) {
        return false;
    }
    boolean result = blockInfo.getBestHeight() <= context.getBestBlock().getHeader().getHeight();
    if (!result) {
        return result;
    }
    Block localBlock = blockService.getBlock(blockInfo.getBestHeight());
    result = null != localBlock && blockInfo.getBestHash().getDigestHex().equals(localBlock.getHeader().getHash().getDigestHex());
    return result;
}