private async Task <Block> AssembleBlock(byte[] prevBlock, uint height, uint difficulty, CancellationToken cancellationToken)
{
var targetTxns = _unconfirmedTransactionPool.Get;
targetTxns.Add(await _blockbaseBuilder.Build(_builderKeys, targetTxns));
var merkleRoot = await _merkleTreeBuilder.BuildTree(targetTxns.Select(x => x.TransactionId).ToList());
if (cancellationToken.IsCancellationRequested)
{
_logger.LogDebug($"Cancelled building block {height}");
return(null);
}
var result = new Block()
{
Transactions = targetTxns,
MerkleRootNode = merkleRoot,
Header = new BlockHeader()
{
MerkelRoot = merkleRoot.Value,
Status = BlockStatus.Unconfirmed,
Version = _networkParameters.HeaderVersion,
Height = height,
PreviousBlock = prevBlock,
Difficulty = difficulty
}
};
_logger.LogDebug($"Building consensus for block {height}");
await _consensusMethod.BuildConsensus(result, cancellationToken);
if (cancellationToken.IsCancellationRequested)
{
_logger.LogDebug($"Cancelled building block {height}");
return(null);
}
_logger.LogDebug($"Built block {height} - {BitConverter.ToString(result.Header.BlockId)}");
return(result);
}
