//Types.Output GetUTXO(Types.Outpoint outpoint, bool IsInBlock)
//{
// using (TransactionContext dbTx = _DBContext.GetTransactionContext())
// {
// return GetUTXO(outpoint, dbTx, IsInBlock);
// }
//}
public UtxoLookup UtxoLookupFactory(TransactionContext dbTx, bool isInBlock, TransactionValidation.PointedTransaction ptx = null)
{
return(UtxoLookup.FromConverter(t =>
{
bool valid;
var output = GetUTXO(t, dbTx, isInBlock, out valid, ptx);
return output == null ? FSharpOption <Types.Output> .None : new FSharpOption <Types.Output>(output);
}));
}
bool IsTransactionValid(TransactionValidation.PointedTransaction ptx)
{
if (!HasUtxos(ptx))
{
MinerTrace.Information("could not validate tx - utxo missing");
return(false);
}
var utxoLookup = UtxoLookup.FromConverter(outpoint =>
{
var outputs = _UtxoSet.Where(t => t.Item1.Equals(outpoint)).Select(t => t.Item2);
return(!outputs.Any() ? FSharpOption <Types.Output> .None : new FSharpOption <Types.Output>(outputs.First()));
});
var contractLookup = FSharpFunc <byte[], FSharpOption <ContractFunction> > .FromConverter(contractHash =>
{
if (!_ActiveContracts.Contains(contractHash))
{
return(FSharpOption <ContractFunction> .None);
}
try
{
var code = new GetContractCodeAction(contractHash).Publish().Result;
//TODO: module name
var extration = ContractExamples.FStarExecution.extract(System.Text.Encoding.ASCII.GetString(code));
if (FSharpOption <string> .get_IsNone(extration))
{
MinerTrace.Information("Could not extract contract");
return(null);
}
var compilation = ContractExamples.FStarExecution.compile(extration.Value);
if (FSharpOption <byte[]> .get_IsNone(compilation))
{
MinerTrace.Information("Could not complie contract");
return(null);
}
return(ContractExamples.FStarExecution.deserialize(compilation.Value).Value.Item1);
}
catch (Exception e)
{
MinerTrace.Error("Could not compile contract " + Convert.ToBase64String(contractHash), e);
return(null);
}
});
if (!TransactionValidation.validateNonCoinbaseTx(
ptx,
utxoLookup,
contractLookup
))
{
MinerTrace.Information("could not validate tx");
return(false);
}
MinerTrace.Information("validated tx");
//TODO: memory management issues. trying to explicitly collect DynamicMethods
GC.Collect();
GC.WaitForPendingFinalizers();
return(true);
}
