private List <string> AttachToTangleStatement(
Hash trunkTransaction, Hash branchTransaction,
int minWeightMagnitude, List <string> trytes)
{
lock (_syncRoot)
{
List <TransactionViewModel> transactionViewModels = new List <TransactionViewModel>();
Hash prevTransaction = null;
_pearlDiver = new PearlDiver();
int[] transactionTrits = Converter.AllocateTritsForTrytes(TrytesSize);
foreach (string tryte in trytes)
{
var startTime = DateTime.Now;
long timestamp = TimeStamp.Now();
try
{
Converter.Trits(tryte, transactionTrits, 0);
//branch and trunk
Array.Copy((prevTransaction ?? trunkTransaction).Trits(), 0,
transactionTrits, TransactionViewModel.TrunkTransactionTrinaryOffset,
TransactionViewModel.TrunkTransactionTrinarySize);
Array.Copy((prevTransaction == null ? branchTransaction : trunkTransaction).Trits(), 0,
transactionTrits, TransactionViewModel.BranchTransactionTrinaryOffset,
TransactionViewModel.BranchTransactionTrinarySize);
//attachment fields: tag and timestamps
//tag - copy the obsolete tag to the attachment tag field only if tag isn't set.
var tagTrits = ArrayUtils.SubArray(transactionTrits,
TransactionViewModel.TagTrinaryOffset,
TransactionViewModel.TagTrinarySize);
if (Array.TrueForAll(tagTrits, s => s == 0))
{
Array.Copy(transactionTrits, TransactionViewModel.ObsoleteTagTrinaryOffset,
transactionTrits, TransactionViewModel.TagTrinaryOffset,
TransactionViewModel.TagTrinarySize);
}
Converter.CopyTrits(timestamp, transactionTrits,
TransactionViewModel.AttachmentTimestampTrinaryOffset,
TransactionViewModel.AttachmentTimestampTrinarySize);
Converter.CopyTrits(0, transactionTrits,
TransactionViewModel.AttachmentTimestampLowerBoundTrinaryOffset,
TransactionViewModel.AttachmentTimestampLowerBoundTrinarySize);
Converter.CopyTrits(MaxTimestampValue, transactionTrits,
TransactionViewModel.AttachmentTimestampUpperBoundTrinaryOffset,
TransactionViewModel.AttachmentTimestampUpperBoundTrinarySize);
if (!_pearlDiver.Search(transactionTrits, minWeightMagnitude, 0))
{
transactionViewModels.Clear();
break;
}
//validate PoW - throws exception if invalid
TransactionViewModel transactionViewModel =
TransactionValidator.Validate(transactionTrits,
_instance.TransactionValidator.MinWeightMagnitude);
transactionViewModels.Add(transactionViewModel);
prevTransaction = transactionViewModel.Hash;
}
finally
{
IncreaseEllapsedTimePoW(DateTime.Now - startTime);
IncreaseCounterPoW();
if ((GetCounterPoW() % 100) == 0)
{
string sb = $"Last 100 PoW consumed {GetEllapsedTimePoW().TotalSeconds:F3} seconds processing time.";
Log.Info(sb);
ResetCounterPow();
ResetEllapsedTimePoW();
}
}
}
List <string> elements = new List <string>();
for (int i = transactionViewModels.Count; i-- > 0;)
{
elements.Add(Converter.Trytes(transactionViewModels[i].Trits()));
}
return(elements);
}
}