Examples with NetworkNewestBlockInfos io.nuls.protocol.base.download.entity.NetworkNewestBlockInfos used on opensource projects

Example 1 with NetworkNewestBlockInfos

use of io.nuls.protocol.base.download.entity.NetworkNewestBlockInfos in project nuls by nuls-io.

the class DownloadProcessor method getNetworkNewestBlock.

public NetworkNewestBlockInfos getNetworkNewestBlock() {
    Collection<Node> nodeList = networkService.getAvailableNodes();
    Map<NulsDigestData, Integer> statisticsMaps = new HashMap<>();
    Map<NulsDigestData, List<Node>> nodeMaps = new HashMap<>();
    // System.out.println("--------------start download-------------------");
    for (Node node : nodeList) {
        // System.out.println(node.getId() + " : " + node.getBestBlockHeight() + " : " + node.getBestBlockHash());
        NulsDigestData hash = node.getBestBlockHash();
        Integer statistics = statisticsMaps.get(hash);
        if (statistics == null) {
            statisticsMaps.put(hash, 0);
        }
        statisticsMaps.put(hash, statisticsMaps.get(hash) + 1);
        List<Node> nodes = nodeMaps.get(hash);
        if (nodes == null) {
            nodes = new ArrayList<>();
            nodeMaps.put(hash, nodes);
        }
        nodes.add(node);
    }
    // max number
    int max = 0;
    long bestHeight = 0;
    NulsDigestData bestHash = null;
    List<Node> nodes = null;
    for (Map.Entry<NulsDigestData, Integer> entry : statisticsMaps.entrySet()) {
        int count = entry.getValue();
        NulsDigestData hash = entry.getKey();
        List<Node> tempNodes = nodeMaps.get(hash);
        long height = tempNodes.get(0).getBestBlockHeight();
        if (count > max || (count == max && bestHeight < height)) {
            max = count;
            bestHash = hash;
            bestHeight = height;
            nodes = tempNodes;
        }
    }
    if (nodes == null || nodes.size() == 0) {
        throw new NulsRuntimeException(NetworkErrorCode.NET_NODE_NOT_FOUND);
    }
    return new NetworkNewestBlockInfos(bestHeight, bestHash, nodes);
}

Example 2 with NetworkNewestBlockInfos

use of io.nuls.protocol.base.download.entity.NetworkNewestBlockInfos in project nuls by nuls-io.

the class DownloadProcessor method checkIsNewest.

private boolean checkIsNewest(NetworkNewestBlockInfos downloadInfos) {
    long downloadBestHeight = downloadInfos.getNetBestHeight();
    long time = TimeService.currentTimeMillis();
    long timeout = 60 * 1000L;
    long localBestHeight = 0L;
    while (true) {
        if (TimeService.currentTimeMillis() - time > timeout) {
            break;
        }
        long bestHeight = blockService.getBestBlock().getData().getHeader().getHeight();
        if (bestHeight >= downloadBestHeight) {
            break;
        } else if (bestHeight != localBestHeight) {
            localBestHeight = bestHeight;
            time = TimeService.currentTimeMillis();
        }
        try {
            Thread.sleep(100L);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
    NetworkNewestBlockInfos newestInfos = getNetworkNewestBlockInfos();
    if (newestInfos.getNetBestHeight() > blockService.getBestBlock().getData().getHeader().getHeight()) {
        downloadStatus = DownloadStatus.WAIT;
        return false;
    }
    return true;
}

Example 3 with NetworkNewestBlockInfos

use of io.nuls.protocol.base.download.entity.NetworkNewestBlockInfos in project nuls by nuls-io.

the class DownloadProcessor method doSynchronize.

/**
 * 区块同步流程
 * block synchronization process
 */
private void doSynchronize() {
    if (downloadStatus != DownloadStatus.READY) {
        return;
    }
    downloadStatus = DownloadStatus.DOWNLOADING;
    // 查找网络大多数节点一致的最高区块hash
    // Finding the highest block hash consistent with most nodes in the network
    NetworkNewestBlockInfos newestInfos = getNetworkNewestBlockInfos();
    if (newestInfos.getNodes().size() < ProtocolConstant.ALIVE_MIN_NODE_COUNT) {
        downloadStatus = DownloadStatus.WAIT;
        Log.info("too few nodes");
        return;
    }
    NulsContext.getInstance().setNetBestBlockHeight(newestInfos.getNetBestHeight());
    DownloadThreadManager downloadThreadManager = new DownloadThreadManager(newestInfos);
    FutureTask<Boolean> threadManagerFuture = new FutureTask<>(downloadThreadManager);
    TaskManager.createAndRunThread(ProtocolConstant.MODULE_ID_PROTOCOL, "download-thread-manager", threadManagerFuture);
    try {
        Boolean downResult = threadManagerFuture.get();
        boolean success = downResult != null && downResult.booleanValue();
        if (success && checkIsNewest(newestInfos)) {
            downloadStatus = DownloadStatus.SUCCESS;
        } else if (downloadStatus != DownloadStatus.WAIT) {
            downloadStatus = DownloadStatus.FAILED;
        }
    } catch (Exception e) {
        Log.error(e);
        downloadStatus = DownloadStatus.FAILED;
    }
}