/// <summary>
/// Execute the contract and add all relevant fees and refunds to the block.
/// </summary>
/// <remarks>TODO: At some point we need to change height to a ulong.</remarks>
private ISmartContractExecutionResult ExecuteSmartContract(TxMempoolEntry mempoolEntry)
{
this.logger.LogTrace("()");
GetSenderUtil.GetSenderResult getSenderResult = GetSenderUtil.GetSender(mempoolEntry.Transaction, this.coinView, this.inBlock.Select(x => x.Transaction).ToList());
if (!getSenderResult.Success)
{
throw new ConsensusErrorException(new ConsensusError("sc-block-assembler-addcontracttoblock", getSenderResult.Error));
}
ISmartContractTransactionContext transactionContext = new SmartContractTransactionContext((ulong)this.height, this.coinbaseAddress, mempoolEntry.Fee, getSenderResult.Sender, mempoolEntry.Transaction);
ISmartContractExecutor executor = this.executorFactory.CreateExecutor(this.stateSnapshot, transactionContext);
ISmartContractExecutionResult result = executor.Execute(transactionContext);
// As we're not storing receipts, can use only consensus fields.
var receipt = new Receipt(
new uint256(this.stateSnapshot.Root),
result.GasConsumed,
result.Logs.ToArray()
);
this.receipts.Add(receipt);
this.logger.LogTrace("(-)");
return(result);
}
/// <inheritdoc/>
public override BlockTemplate Build(ChainedHeader chainTip, Script scriptPubKeyIn)
{
this.logger.LogTrace("()");
GetSenderUtil.GetSenderResult getSenderResult = GetSenderUtil.GetAddressFromScript(scriptPubKeyIn);
if (!getSenderResult.Success)
{
throw new ConsensusErrorException(new ConsensusError("sc-block-assembler-createnewblock", getSenderResult.Error));
}
this.coinbaseAddress = getSenderResult.Sender;
this.stateSnapshot = this.stateRoot.GetSnapshotTo(((SmartContractBlockHeader)this.ConsensusLoop.Tip.Header).HashStateRoot.ToBytes());
this.refundOutputs.Clear();
this.receipts.Clear();
base.OnBuild(chainTip, scriptPubKeyIn);
this.coinbase.Outputs.AddRange(this.refundOutputs);
this.logger.LogTrace("(-)");
return(this.BlockTemplate);
}
/// <summary>
/// Execute the contract and add all relevant fees and refunds to the block.
/// </summary>
/// <remarks>TODO: At some point we need to change height to a ulong.</remarks>
private ISmartContractExecutionResult ExecuteSmartContract(TxMempoolEntry mempoolEntry)
{
this.logger.LogTrace("()");
GetSenderUtil.GetSenderResult getSenderResult = GetSenderUtil.GetSender(mempoolEntry.Transaction, this.coinView, this.inBlock.Select(x => x.Transaction).ToList());
if (!getSenderResult.Success)
{
throw new ConsensusErrorException(new ConsensusError("sc-block-assembler-addcontracttoblock", getSenderResult.Error));
}
ISmartContractTransactionContext transactionContext = new SmartContractTransactionContext((ulong)this.height, this.coinbaseAddress, mempoolEntry.Fee, getSenderResult.Sender, mempoolEntry.Transaction);
ISmartContractExecutor executor = this.executorFactory.CreateExecutor(this.stateSnapshot, transactionContext);
ISmartContractExecutionResult result = executor.Execute(transactionContext);
this.logger.LogTrace("(-)");
return(result);
}
/// <summary>
/// Retrieves the context object to be given to the contract executor.
/// </summary>
private ISmartContractTransactionContext GetSmartContractTransactionContext(RuleContext context, Transaction transaction)
{
ulong blockHeight = Convert.ToUInt64(context.ValidationContext.ChainedHeader.Height);
GetSenderUtil.GetSenderResult getSenderResult = GetSenderUtil.GetSender(transaction, ((PowConsensusRules)this.Parent).UtxoSet, this.blockTxsProcessed);
if (!getSenderResult.Success)
{
throw new ConsensusErrorException(new ConsensusError("sc-consensusvalidator-executecontracttransaction-sender", getSenderResult.Error));
}
Script coinbaseScriptPubKey = context.ValidationContext.Block.Transactions[0].Outputs[0].ScriptPubKey;
GetSenderUtil.GetSenderResult getCoinbaseResult = GetSenderUtil.GetAddressFromScript(coinbaseScriptPubKey);
if (!getCoinbaseResult.Success)
{
throw new ConsensusErrorException(new ConsensusError("sc-consensusvalidator-executecontracttransaction-coinbase", getCoinbaseResult.Error));
}
Money mempoolFee = transaction.GetFee(((UtxoRuleContext)context).UnspentOutputSet);
return(new SmartContractTransactionContext(blockHeight, getCoinbaseResult.Sender, mempoolFee, getSenderResult.Sender, transaction));
}