public void Test12()
{
ContractStateRoot repository = new ContractStateRoot(new MemoryDictionarySource());
IContractState track = repository.StartTracking();
track.SetCode(new uint160(cow), cowCode);
track.SetCode(new uint160(horse), horseCode);
Assert.Equal(cowCode, track.GetCode(new uint160(cow)));
Assert.Equal(horseCode, track.GetCode(new uint160(horse)));
track.Rollback();
Assert.Null(repository.GetCode(new uint160(cow)));
Assert.Null(repository.GetCode(new uint160(horse)));
}
/// <summary>
/// Invokes a method on an existing smart contract
/// </summary>
public VmExecutionResult ExecuteMethod(
IGasMeter gasMeter,
IContractState repository,
ICallData callData,
ITransactionContext transactionContext)
{
this.logger.LogTrace("(){0}:{1}", nameof(callData.MethodName), callData.MethodName);
if (callData.MethodName == null)
{
this.logger.LogTrace("(-)[CALLCONTRACT_METHODNAME_NOT_GIVEN]");
return(VmExecutionResult.Error(gasMeter.GasConsumed, null));
}
byte[] contractExecutionCode = repository.GetCode(callData.ContractAddress);
string typeName = repository.GetContractType(callData.ContractAddress);
if (contractExecutionCode == null)
{
return(VmExecutionResult.Error(gasMeter.GasConsumed, new SmartContractDoesNotExistException(callData.MethodName)));
}
// TODO consolidate this with CallData.
MethodCall methodCall = new MethodCall(callData.MethodName, callData.MethodParameters);
ContractByteCode code;
using (IContractModuleDefinition moduleDefinition = this.moduleDefinitionReader.Read(contractExecutionCode))
{
moduleDefinition.InjectMethodGas(typeName, methodCall);
code = moduleDefinition.ToByteCode();
}
var internalTransferList = new List <TransferInfo>();
var contractLogger = new ContractLogHolder(this.network);
ISmartContractState contractState = this.SetupState(contractLogger, internalTransferList, gasMeter, repository, transactionContext, callData.ContractAddress);
Result <IContract> contractLoadResult = this.Load(
code,
typeName,
callData.ContractAddress,
contractState);
if (!contractLoadResult.IsSuccess)
{
// TODO this is temporary until we improve error handling overloads
var exception = new Exception(contractLoadResult.Error);
LogException(exception);
this.logger.LogTrace("(-)[LOAD_CONTRACT_FAILED]:{0}={1}", nameof(gasMeter.GasConsumed), gasMeter.GasConsumed);
return(VmExecutionResult.Error(gasMeter.GasConsumed, exception));
}
IContract contract = contractLoadResult.Value;
LogExecutionContext(this.logger, contract.State.Block, contract.State.Message, contract.Address, callData);
IContractInvocationResult invocationResult = contract.Invoke(methodCall);
if (!invocationResult.IsSuccess)
{
this.logger.LogTrace("(-)[CALLCONTRACT_INSTANTIATION_FAILED]:{0}={1}", nameof(gasMeter.GasConsumed), gasMeter.GasConsumed);
return(VmExecutionResult.Error(gasMeter.GasConsumed, new Exception("Method invocation failed!")));
}
this.logger.LogTrace("[CALL_CONTRACT_INSTANTIATION_SUCCEEDED]");
this.logger.LogTrace("(-):{0}={1}", nameof(gasMeter.GasConsumed), gasMeter.GasConsumed);
return(VmExecutionResult.Success(internalTransferList, gasMeter.GasConsumed, invocationResult.Return, contractLogger.GetRawLogs()));
}
