private EthereumBlockTemplate AssembleBlockTemplate(string[] work)
{
// only parity returns the 4th element (block height)
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);
}
// extract values
var height = work[3].IntegralFromHex <ulong>();
var targetString = work[2];
var target = BigInteger.Parse(targetString.Substring(2), NumberStyles.HexNumber);
var result = new EthereumBlockTemplate
{
Header = work[0],
Seed = work[1],
Target = targetString,
Difficulty = (ulong)BigInteger.Divide(EthereumConstants.BigMaxValue, target),
Height = height,
};
return(result);
}
private EthereumBlockTemplate AssembleBlockTemplate(Block block, string[] work)
{
// only parity returns the 4th element (block height)
if (work.Length < 3)
{
logger.Error(() => $"[{LogCat}] Error(s) refreshing blocktemplate: getWork did not return blockheight. Are you really connected to a Parity daemon?");
return(null);
}
// make sure block matches work
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);
}
private async Task <EthereumBlockTemplate> GetBlockTemplateAsync()
{
logger.LogInvoke(LogCat);
var commands = new[]
{
new DaemonCmd(EC.GetBlockByNumber, new[] { (object)"pending", true }),
new DaemonCmd(EC.GetWork),
};
var results = await daemon.ExecuteBatchAnyAsync(commands);
if (results.Any(x => x.Error != null))
{
var errors = results.Where(x => x.Error != null)
.ToArray();
if (errors.Any())
{
logger.Warn(() => $"[{LogCat}] Error(s) refreshing blocktemplate: {string.Join(", ", errors.Select(y => y.Error.Message))})");
return(null);
}
}
// extract results
var block = results[0].Response.ToObject <Block>();
var work = results[1].Response.ToObject <string[]>();
// only parity returns the 4th element (block height)
if (work.Length < 3)
{
logger.Error(() => $"[{LogCat}] Error(s) refreshing blocktemplate: getWork did not return blockheight. Are you really connected to a Parity daemon?");
return(null);
}
// make sure block matches work
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 = BigInteger.Parse("0" + work[2].Substring(2), NumberStyles.HexNumber),
Difficulty = block.Difficulty.IntegralFromHex <ulong>(),
Height = block.Height.Value,
ParentHash = block.ParentHash,
};
return(result);
}
protected bool UpdateJob(EthereumBlockTemplate blockTemplate)
{
logger.LogInvoke(LogCat);
try
{
// may happen if daemon is currently not connected to peers
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");
// update template
job = new EthereumJob(jobId, blockTemplate, logger);
lock (jobLock)
{
// add jobs
validJobs[jobId] = job;
// remove old ones
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;
// update stats
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(EthereumBlockTemplate blockTemplate, byte[] instanceId, string jobId,
PoolConfig poolConfig, ClusterConfig clusterConfig)
{
Contract.RequiresNonNull(blockTemplate, nameof(blockTemplate));
Contract.RequiresNonNull(poolConfig, nameof(poolConfig));
Contract.RequiresNonNull(clusterConfig, nameof(clusterConfig));
Contract.RequiresNonNull(instanceId, nameof(instanceId));
Contract.Requires <ArgumentException>(!string.IsNullOrEmpty(jobId), $"{nameof(jobId)} must not be empty");
BlockTemplate = blockTemplate;
}
public EthereumJob(string id, EthereumBlockTemplate blockTemplate)
{
Id = id;
BlockTemplate = blockTemplate;
var target = blockTemplate.Target;
if (target.StartsWith("0x"))
{
target = target.Substring(2);
}
blockTarget = new uint256(target.HexToByteArray().ReverseArray());
}
private async Task <EthereumBlockTemplate> GetBlockTemplateAsync()
{
var commands = new[]
{
new DaemonCmd(EC.GetBlockByNumber, new[] { (object)"pending", true }),
new DaemonCmd(EC.GetWork),
};
var results = await daemon.ExecuteBatchAnyAsync(commands);
if (results.Any(x => x.Error != null))
{
var errors = results.Where(x => x.Error != null)
.ToArray();
if (errors.Any())
{
logger.Warn(() => $"[{LogCat}] Error(s) refreshing blocktemplate: {string.Join(", ", errors.Select(y => y.Error.Message))})");
return(null);
}
}
// extract results
var block = results[0].Response.ToObject <Block>();
var work = results[1].Response.ToObject <string[]>();
var result = new EthereumBlockTemplate
{
Header = work[0].HexToByteArray(),
Seed = work[1].HexToByteArray(),
Target = new BigInteger(work[2].HexToByteArray().ToReverseArray()), // BigInteger.Parse(work[2], NumberStyles.HexNumber | NumberStyles.AllowHexSpecifier)
Difficulty = block.Difficulty.IntegralFromHex <ulong>(),
Height = block.Height.Value,
ParentHash = block.ParentHash,
};
return(result);
}
public EthereumJob(string id, EthereumBlockTemplate blockTemplate)
{
Id = id;
BlockTemplate = blockTemplate;
}