public void SmartContract_Restorer_ConstructorNotInvokedSuccess()
{
LifecycleResult result = SmartContractRestorer
.Restore(typeof(ConstructorInvokedContract), this.state);
Assert.True(result.Success);
Assert.NotNull(result.Object);
Assert.False(((ConstructorInvokedContract)result.Object).ConstructorInvoked);
}
public void SmartContract_Restorer_NonpublicStateFieldsSetSuccess()
{
LifecycleResult result = SmartContractRestorer
.Restore(typeof(NoParamContract), this.state);
Assert.True(result.Success);
SmartContract contract = result.Object;
FieldInfo[] fields = typeof(SmartContract).GetFields(
BindingFlags.Instance
| BindingFlags.NonPublic
);
foreach (FieldInfo field in fields)
{
object value = field.GetValue(contract);
switch (field.Name)
{
case "Block":
Assert.Equal(this.state.Block, value);
break;
case "Message":
Assert.Equal(this.state.Message, value);
break;
case "PersistentState":
Assert.Equal(this.state.PersistentState, value);
break;
case "gasMeter":
Assert.Equal(this.state.GasMeter, value);
break;
case "getBalance":
Assert.Equal(this.state.GetBalance, value);
break;
case "internalTransactionExecutor":
Assert.Equal(this.state.InternalTransactionExecutor, value);
break;
case "internalHashHelper":
Assert.Equal(this.state.InternalHashHelper, value);
break;
case "smartContractState":
Assert.Equal(this.state, value);
break;
}
}
}
/// <summary>
/// Invokes a method on an existing smart contract
/// </summary>
public VmExecutionResult ExecuteMethod(
IGasMeter gasMeter,
IContractStateRepository 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)));
}
byte[] gasInjectedCode = SmartContractGasInjector.AddGasCalculationToContractMethod(contractExecutionCode, typeName, callData.MethodName);
Type contractType = Load(gasInjectedCode, typeName);
if (contractType == null)
{
this.logger.LogTrace("(-)[CALLCONTRACT_CONTRACTTYPE_NULL]");
return(VmExecutionResult.Error(gasMeter.GasConsumed, null));
}
uint160 contractAddress = callData.ContractAddress;
IPersistenceStrategy persistenceStrategy = new MeteredPersistenceStrategy(repository, gasMeter, new BasicKeyEncodingStrategy());
IPersistentState persistentState = new PersistentState(persistenceStrategy, contractAddress, this.network);
var internalTransferList = new List <TransferInfo>();
IInternalTransactionExecutor internalTransactionExecutor = this.internalTransactionExecutorFactory.Create(this, repository, internalTransferList, transactionContext);
var balanceState = new BalanceState(repository, transactionContext.Amount, internalTransferList);
var contractState = new SmartContractState(
new Block(
transactionContext.BlockHeight,
transactionContext.Coinbase.ToAddress(this.network)
),
new Message(
callData.ContractAddress.ToAddress(this.network),
transactionContext.From.ToAddress(this.network),
transactionContext.Amount
),
persistentState,
gasMeter,
internalTransactionExecutor,
new InternalHashHelper(),
() => balanceState.GetBalance(callData.ContractAddress));
LogExecutionContext(this.logger, contractState.Block, contractState.Message, contractAddress, callData);
LifecycleResult result = SmartContractRestorer.Restore(contractType, contractState);
if (!result.Success)
{
LogException(result.Exception);
this.logger.LogTrace("(-)[CALLCONTRACT_INSTANTIATION_FAILED]:{0}={1}", nameof(gasMeter.GasConsumed), gasMeter.GasConsumed);
return(VmExecutionResult.Error(gasMeter.GasConsumed, result.Exception.InnerException ?? result.Exception));
}
else
{
this.logger.LogTrace("[CALL_CONTRACT_INSTANTIATION_SUCCEEDED]");
}
object methodResult = null;
try
{
MethodInfo methodToInvoke = contractType.GetMethod(callData.MethodName);
if (methodToInvoke == null)
{
throw new ArgumentException(string.Format("[CALLCONTRACT_METHODTOINVOKE_NULL_DOESNOT_EXIST]:{0}={1}", nameof(callData.MethodName), callData.MethodName));
}
if (methodToInvoke.IsConstructor)
{
throw new ConstructorInvocationException("[CALLCONTRACT_CANNOT_INVOKE_CTOR]");
}
SmartContract smartContract = result.Object;
methodResult = methodToInvoke.Invoke(smartContract, callData.MethodParameters);
}
catch (ArgumentException argumentException)
{
LogException(argumentException);
return(VmExecutionResult.Error(gasMeter.GasConsumed, argumentException));
}
catch (TargetInvocationException targetException)
{
LogException(targetException);
return(VmExecutionResult.Error(gasMeter.GasConsumed, targetException.InnerException ?? targetException));
}
catch (TargetParameterCountException parameterException)
{
LogException(parameterException);
}
catch (ConstructorInvocationException constructorInvocationException)
{
LogException(constructorInvocationException);
return(VmExecutionResult.Error(gasMeter.GasConsumed, constructorInvocationException));
}
this.logger.LogTrace("(-):{0}={1}", nameof(gasMeter.GasConsumed), gasMeter.GasConsumed);
return(VmExecutionResult.Success(internalTransferList, gasMeter.GasConsumed, methodResult));
}
/// <summary>
/// Invokes a method on an existing smart contract
/// </summary>
public VmExecutionResult ExecuteMethod(byte[] contractCode,
string contractMethodName,
ISmartContractExecutionContext context,
IGasMeter gasMeter,
IPersistentState persistentState,
IContractStateRepository repository)
{
this.logger.LogTrace("(){0}:{1}", nameof(contractMethodName), contractMethodName);
ISmartContractExecutionResult executionResult = new SmartContractExecutionResult();
if (contractMethodName == null)
{
this.logger.LogTrace("(-)[CALLCONTRACT_METHODNAME_NOT_GIVEN]");
return(VmExecutionResult.Error(gasMeter.GasConsumed, null));
}
byte[] gasInjectedCode = SmartContractGasInjector.AddGasCalculationToContractMethod(contractCode, contractMethodName);
Type contractType = Load(gasInjectedCode);
if (contractType == null)
{
this.logger.LogTrace("(-)[CALLCONTRACT_CONTRACTTYPE_NULL]");
return(VmExecutionResult.Error(gasMeter.GasConsumed, null));
}
var internalTransferList = new List <TransferInfo>();
IInternalTransactionExecutor internalTransactionExecutor = this.internalTransactionExecutorFactory.Create(repository, internalTransferList);
var balanceState = new BalanceState(repository, context.Message.Value, internalTransferList);
var contractState = new SmartContractState(
context.Block,
context.Message,
persistentState,
gasMeter,
internalTransactionExecutor,
new InternalHashHelper(),
() => balanceState.GetBalance(context.ContractAddress));
LifecycleResult result = SmartContractRestorer.Restore(contractType, contractState);
if (!result.Success)
{
LogException(result.Exception);
this.logger.LogTrace("(-)[CALLCONTRACT_INSTANTIATION_FAILED]:{0}={1}", nameof(gasMeter.GasConsumed), gasMeter.GasConsumed);
executionResult.Exception = result.Exception.InnerException ?? result.Exception;
executionResult.GasConsumed = gasMeter.GasConsumed;
return(VmExecutionResult.Error(gasMeter.GasConsumed, result.Exception.InnerException ?? result.Exception));
}
else
{
this.logger.LogTrace("[CALL_CONTRACT_INSTANTIATION_SUCCEEDED]");
}
object methodResult = null;
try
{
MethodInfo methodToInvoke = contractType.GetMethod(contractMethodName);
if (methodToInvoke == null)
{
throw new ArgumentException(string.Format("[CALLCONTRACT_METHODTOINVOKE_NULL_DOESNOT_EXIST]:{0}={1}", nameof(contractMethodName), contractMethodName));
}
if (methodToInvoke.IsConstructor)
{
throw new ConstructorInvocationException("[CALLCONTRACT_CANNOT_INVOKE_CTOR]");
}
SmartContract smartContract = result.Object;
methodResult = methodToInvoke.Invoke(smartContract, context.Parameters);
}
catch (ArgumentException argumentException)
{
LogException(argumentException);
return(VmExecutionResult.Error(gasMeter.GasConsumed, argumentException));
}
catch (TargetInvocationException targetException)
{
LogException(targetException);
return(VmExecutionResult.Error(gasMeter.GasConsumed, targetException.InnerException ?? targetException));
}
catch (TargetParameterCountException parameterException)
{
LogException(parameterException);
}
catch (ConstructorInvocationException constructorInvocationException)
{
LogException(constructorInvocationException);
return(VmExecutionResult.Error(gasMeter.GasConsumed, constructorInvocationException));
}
this.logger.LogTrace("(-):{0}={1}", nameof(gasMeter.GasConsumed), gasMeter.GasConsumed);
return(VmExecutionResult.Success(internalTransferList, gasMeter.GasConsumed, methodResult));
}
