private EthereumBlockTemplate AssembleBlockTemplate(Block block, string[] work)
{
if (work.Length < 4)
{
logger.Error(() => $"[{LogCat}] Error(s) refreshing blocktemplate: getWork did not return blockheight. Are you really connected to a Parity daemon?");
return(null);
}
var height = work[3].IntegralFromHex <ulong>();
if (height != block.Height)
{
logger.Debug(() => $"[{LogCat}] Discarding block template update as getWork result is not related to pending block");
return(null);
}
var result = new EthereumBlockTemplate
{
Header = work[0],
Seed = work[1],
Target = work[2],
Difficulty = block.Difficulty.IntegralFromHex <ulong>(),
Height = block.Height.Value,
ParentHash = block.ParentHash,
};
return(result);
}
protected bool UpdateJob(EthereumBlockTemplate blockTemplate)
{
logger.LogInvoke(LogCat);
try
{
if (blockTemplate == null || blockTemplate.Header?.Length == 0)
{
return(false);
}
var job = currentJob;
var isNew = currentJob == null || job.BlockTemplate.Header != blockTemplate.Header;
if (isNew)
{
var jobId = NextJobId("x8");
job = new EthereumJob(jobId, blockTemplate, logger);
lock (jobLock)
{
validJobs[jobId] = job;
var obsoleteKeys = validJobs.Keys
.Where(key => validJobs[key].BlockTemplate.Height < job.BlockTemplate.Height - MaxBlockBacklog).ToArray();
foreach (var key in obsoleteKeys)
{
validJobs.Remove(key);
}
}
currentJob = job;
BlockchainStats.LastNetworkBlockTime = clock.Now;
BlockchainStats.BlockHeight = (long)job.BlockTemplate.Height;
BlockchainStats.NetworkDifficulty = job.BlockTemplate.Difficulty;
}
return(isNew);
}
catch (Exception ex)
{
logger.Error(ex, () => $"[{LogCat}] Error during {nameof(UpdateJob)}");
}
return(false);
}
public EthereumJob(string id, EthereumBlockTemplate blockTemplate, ILogger logger)
{
Id = id;
BlockTemplate = blockTemplate;
this.logger = logger;
var target = blockTemplate.Target;
if (target.StartsWith("0x"))
{
target = target.Substring(2);
}
blockTarget = new uint256(target.HexToByteArray().ReverseArray());
}