Examples with ChainHash snowblossom.lib.ChainHash used on opensource projects

Example 1 with ChainHash

use of snowblossom.lib.ChainHash in project snowblossom by snowblossomcoin.

the class ShardUtxoImport method checkTipTrust.

/**
 * Take an inbound tip and see if it is signing a block
 * with a key we trust.  If so, trust that block and maybe some parent blocks.
 *
 * Returns a list of hashes to request ImportedBlock for
 */
public List<ChainHash> checkTipTrust(MetricLog mlog, PeerChainTip tip) throws ValidationException {
    // If there is no block
    if (tip.getHeader().getSnowHash().size() == 0)
        return null;
    int shard_id = tip.getHeader().getShardId();
    // If this is a shard we actually track
    if (node.getInterestShards().contains(shard_id))
        return null;
    mlog.set("trusted_signers", trusted_signers.size());
    // We trust no one
    if (trusted_signers.size() == 0)
        return null;
    if (tip.getSignedHead() == null)
        return null;
    if (tip.getSignedHead().getPayload().size() == 0)
        return null;
    SignedMessagePayload payload = MsgSigUtil.validateSignedMessage(tip.getSignedHead(), node.getParams());
    mlog.set("valid_payload", 1);
    AddressSpecHash signer = AddressUtil.getHashForSpec(payload.getClaim());
    if (!trusted_signers.contains(signer))
        return null;
    mlog.set("trusted_sig", 1);
    // Now we have a valid signed head from a trusted signer
    logger.finer(String.format("Got signed tip from trusted peer (signer:%s)", AddressUtil.getAddressString("node", signer)));
    PeerTipInfo tip_info = payload.getPeerTipInfo();
    if (tip_info.getCoordHead().getSnowHash().size() > 0) {
        BlockPreview bp = tip_info.getCoordHead();
        node.getForgeInfo().saveExtCoordHead(bp);
    }
    LinkedList<ChainHash> request_list = new LinkedList<>();
    for (BlockPreview bp : tip_info.getPreviewsList()) {
        ChainHash hash = new ChainHash(bp.getSnowHash());
        node.getDB().setBlockTrust(hash);
        node.getDB().getChildBlockMapSet().add(bp.getPrevBlockHash(), bp.getSnowHash());
        ImportedBlock ib = getImportBlock(hash);
        if (ib == null) {
            // If we don't have the block, maybe request it
            if (reserveBlock(hash)) {
                request_list.add(hash);
            }
        }
    }
    return request_list;
}

Example 2 with ChainHash

use of snowblossom.lib.ChainHash in project snowblossom by snowblossomcoin.

the class ShardUtxoImport method addImportedBlock.

public void addImportedBlock(ImportedBlock ib) throws ValidationException {
    Validation.validateImportedBlock(node.getParams(), ib);
    logger.info(String.format("Added ImportedBlock (s:%d h:%d %s)", ib.getHeader().getShardId(), ib.getHeader().getBlockHeight(), new ChainHash(ib.getHeader().getSnowHash()).toString()));
    node.getDB().getChildBlockMapSet().add(ib.getHeader().getPrevBlockHash(), ib.getHeader().getSnowHash());
    node.getDB().getImportedBlockMap().put(ib.getHeader().getSnowHash(), ib);
    saveHighestForKnownShard(ib);
}

Example 3 with ChainHash

use of snowblossom.lib.ChainHash in project snowblossom by snowblossomcoin.

the class ShardUtxoImport method getHighestKnownForShard.

public Set<ChainHash> getHighestKnownForShard(int shard) {
    ByteString key = ByteString.copyFrom(new String("ext-" + shard).getBytes());
    ExternalHeadList list = node.getDB().getExternalShardHeadMap().get(key);
    HashSet<ChainHash> out = new HashSet<>();
    if (list != null) {
        for (ByteString bs : list.getHeadHashesList()) {
            out.add(new ChainHash(bs));
        }
    }
    logger.fine(String.format("Highest known for %d - %s", shard, out.toString()));
    return out;
}

Example 4 with ChainHash

use of snowblossom.lib.ChainHash in project snowblossom by snowblossomcoin.

the class GraphOutput method getGraph.

public static JSONObject getGraph(Collection<BlockHeader> blocks) {
    JSONArray node_array = new JSONArray();
    JSONArray link_array = new JSONArray();
    HashMap<ChainHash, BlockHeader> block_map = new HashMap<>();
    HashMap<ChainHash, String> name_map = new HashMap<>();
    HashMap<ChainHash, Integer> id_map = new HashMap<>();
    int id = 1;
    // Set nodes
    for (BlockHeader bh : blocks) {
        ChainHash hash = new ChainHash(bh.getSnowHash());
        block_map.put(hash, bh);
        String name = getName(bh);
        name_map.put(hash, name);
        id_map.put(hash, id);
        JSONObject node = new JSONObject();
        node.put("hash", hash.toString());
        node.put("name", name);
        node.put("shard", bh.getShardId());
        node.put("timestamp", bh.getTimestamp());
        node.put("height", bh.getBlockHeight());
        node_array.add(node);
        id++;
    }
    // Build links
    for (BlockHeader bh : blocks) {
        ChainHash hash = new ChainHash(bh.getSnowHash());
        ChainHash prev = new ChainHash(bh.getPrevBlockHash());
        int my_id = id_map.get(hash);
        if (id_map.containsKey(prev)) {
            JSONObject link = new JSONObject();
            link.put("source", hash.toString());
            link.put("target", prev.toString());
            link.put("parent", 1);
            link_array.add(link);
        }
        for (BlockImportList bil : bh.getShardImportMap().values()) {
            for (ByteString bs : bil.getHeightMap().values()) {
                ChainHash imp_hash = new ChainHash(bs);
                if (id_map.containsKey(imp_hash)) {
                    JSONObject link = new JSONObject();
                    link.put("source", hash.toString());
                    link.put("target", imp_hash.toString());
                    link.put("import", 1);
                    link_array.add(link);
                }
            }
        }
    }
    JSONObject graph = new JSONObject();
    graph.put("nodes", node_array);
    graph.put("links", link_array);
    return graph;
}

Example 5 with ChainHash

use of snowblossom.lib.ChainHash in project snowblossom by snowblossomcoin.

the class MonitorInterfaceSystemOut method onInbound.

public void onInbound(Transaction tx, int tx_in_idx) {
    ChainHash hash = new ChainHash(tx.getTxHash());
    System.out.println("Inbound tx: " + hash + " input: " + tx_in_idx);
}