private bool TryIncludeNewTransaction(NodeIndex nodeIndex, OngoingBlock ongoingBlock, Transaction newTransaction, out OngoingBlock newOngoingBlock)
{
NewTransactionIncludeResult includeResult;
try
{
includeResult = _newTransactionValidator.Validate(nodeIndex, ongoingBlock, newTransaction);
}
catch (TransactionDeclinedException ex)
{
Trace.TraceWarning("Transaction message {0} will be declined: {1}", newTransaction.Signature, ex.Message);
newOngoingBlock = default(OngoingBlock);
return(false);
}
catch (Exception ex)
{
Trace.TraceWarning("Transaction message {0} will be ignored because of unexpected error: {1}", newTransaction.Signature, ex);
newOngoingBlock = default(OngoingBlock);
return(false);
}
if (includeResult.IsNone)
{
Trace.TraceWarning("Transaction message {0} will be declined: try to set a better fee", newTransaction.Signature);
newOngoingBlock = default(OngoingBlock);
return(false);
}
newOngoingBlock = ongoingBlock.Aggregate(newTransaction, includeResult.ToRemoveTransactions);
return(true);
}
public NodeState Add(Block nextBlock)
{
var newNodeIndex = NodeIndex.Add(nextBlock);
var includedTransactions = nextBlock.Transactions.Select(t => t.Signature).ToHashSet();
var notIncludedTransactios = OngoingBlock.Transactions.Where(t => !includedTransactions.Contains(t.Signature)).ToArray();
var newOngoingBlock = new OngoingBlock(nextBlock.Index + 1, OngoingBlock.Node, nextBlock.Signature, notIncludedTransactios);
return(new NodeState(newNodeIndex, newOngoingBlock));
}
private bool TryFindNextBlock(OngoingBlock ongoingBlock, out Block nextBlock)
{
var rnd = Guid.NewGuid().ToString("D");
nextBlock = _blockFactory.Create(ongoingBlock.Index, ongoingBlock.Node, rnd, ongoingBlock.PreviousHash, ongoingBlock.Transactions);
Trace.TraceInformation("[node]\t\tCreated next block candidate {0}", nextBlock);
return(_hashFilter.IsSatisfy(nextBlock.Signature, _nodeSettings.NextHashFactor));
}
public NodeState UpdateOngoingBlock(OngoingBlock newOngoingBlock)
{
return(new NodeState(NodeIndex, newOngoingBlock));
}
internal NodeState(NodeIndex nodeIndex, OngoingBlock ongoingBlock)
{
NodeIndex = nodeIndex ?? throw new NullReferenceException("nodeIndex");
OngoingBlock = ongoingBlock ?? throw new NullReferenceException("ongoingBlock");
}
public NodeState(INode node)
{
NodeIndex = NodeIndex.Empty;
OngoingBlock = new OngoingBlock(1, node, HashValue.Empty, Array.Empty <Transaction>());
}