public void Sync()
{
_isRunning = true;
try
{
var node = Node.Connect(Network.Main, new IPEndPoint(IPAddress.Parse(_settings.Nodes), 16178));
// var node = Node.ConnectToLocal(Network.Main);
//var connectedNodes = _group.ConnectedNodes.ToArray();
//if (!connectedNodes.Any())
//{
// _logger.Information("Waiting for nodes ... ");
// _isRunning = false;
// return;
//}
_logger.Information("************************************************");
_logger.Information("Connecting to Node ");
//_logger.Information($"Total connected nodes {connectedNodes.Length}");
//var rand = new Random();
//var node = connectedNodes[rand.Next(connectedNodes.Length)];
_logger.Information($"Node selected {node.Peer.Endpoint.Address}");
if (node.IsConnected)
{
node.VersionHandshake();
_logger.Information("Connected...");
_logger.Information($"Last Seen -->{node.LastSeen}");
_logger.Information("Checking chain");
if (_chain == null)
{
_logger.Information("Loading chain from disk...");
LoadChain();
if (_chain == null)
{
_logger.Information("No chain found on disk, Syncing chain from node ");
_chain = node.GetChain();
_logger.Information("Chain sync completed");
}
}
_logger.Information("Retrieving latest block...");
var lastDbBlock = _proofService.GetLatestBlock();
_logger.Information($"Latest Block {lastDbBlock}");
_logger.Information("Synching latest chain...");
node.SynchronizeChain(_chain);
_lastHeight = _chain.Height;
_logger.Information($"Lastest Chain Height: {_lastHeight}");
var height = 0;
IEnumerable <IEnumerable <uint256> > hashChunks = null;
if (lastDbBlock == null)
{
_logger.Information("Retrieving chained blocks from height 0");
hashChunks = _chain.ToEnumerable(false).Select(x => x.HashBlock).Chunk(ChunkSize);
}
else
if (lastDbBlock.Height < _chain.Height)
{
_logger.Information($"Retrieving chained blocks from height {lastDbBlock.Height}");
hashChunks = _chain.EnumerateAfter(new uint256(lastDbBlock.Hash)).Select(x => x.HashBlock).Chunk(ChunkSize);
height = lastDbBlock.Height + 1;
}
if (hashChunks != null)
{
_logger.Information($"Total blocks to save {_chain.Height - (lastDbBlock ?? new BlockData()).Height}, hashChunks {hashChunks.LongCount()}");
var chunkSize = 0;
foreach (var hashChunk in hashChunks)
{
_logger.Information($"Retrieving chunks from {chunkSize} - {chunkSize + ChunkSize}");
var blocks = node.GetBlocks(hashChunk);
var dataBlocks = blocks.Select(x =>
{
var block = BlockData.Parse(x);
block.Height = height++;
return(block);
});
_proofService.SaveBlocks(dataBlocks);
chunkSize += ChunkSize;
_logger.Information($"Saved blocks");
}
}
_logger.Information("Finished syncing...");
SaveChain();
_logger.Information("Disconnecting node....");
node.Disconnect();
CheckPending();
//var indexStore = new IndexedBlockStore(new InMemoryNoSqlRepository(), _blockStore);
// CheckAddressTransactions(newBlocks);
_logger.Information("************************************************");
}
else
{
_logger.Information("Couldn't connect to node");
}
}
catch (System.Exception ex)
{
_logger.Information($"Exception while syncing {ex}");
}
finally
{
_isRunning = false;
}
}