/// <summary> /// Creates a new instance of a smart contract by invoking the contract's constructor /// </summary> public VmExecutionResult Create(IGasMeter gasMeter, IContractState repository, ICreateData createData, ITransactionContext transactionContext, string typeName = null) { this.logger.LogTrace("()"); // TODO: Spend Validation + Creation Fee here. string typeToInstantiate; ContractByteCode code; // Decompile the contract execution code and validate it. using (IContractModuleDefinition moduleDefinition = this.moduleDefinitionReader.Read(createData.ContractExecutionCode)) { SmartContractValidationResult validation = moduleDefinition.Validate(this.validator); // If validation failed, refund the sender any remaining gas. if (!validation.IsValid) { this.logger.LogTrace("(-)[CONTRACT_VALIDATION_FAILED]"); return(VmExecutionResult.Error(gasMeter.GasConsumed, new SmartContractValidationException(validation.Errors))); } typeToInstantiate = typeName ?? moduleDefinition.ContractType.Name; moduleDefinition.InjectConstructorGas(); code = moduleDefinition.ToByteCode(); } var internalTransferList = new List <TransferInfo>(); uint160 address = this.addressGenerator.GenerateAddress(transactionContext.TransactionHash, transactionContext.GetNonceAndIncrement()); var contractLogger = new ContractLogHolder(this.network); ISmartContractState contractState = this.SetupState(contractLogger, internalTransferList, gasMeter, repository, transactionContext, address); Result <IContract> contractLoadResult = this.Load( code, typeToInstantiate, address, 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, createData); // Create an account for the contract in the state repository. repository.CreateAccount(contract.Address); // Invoke the constructor of the provided contract code IContractInvocationResult invocationResult = contract.InvokeConstructor(createData.MethodParameters); if (!invocationResult.IsSuccess) { this.logger.LogTrace("[CREATE_CONTRACT_INSTANTIATION_FAILED]"); return(VmExecutionResult.Error(gasMeter.GasConsumed, new Exception("Constructor invocation failed!"))); } this.logger.LogTrace("[CREATE_CONTRACT_INSTANTIATION_SUCCEEDED]"); this.logger.LogTrace("(-):{0}={1}, {2}={3}", nameof(contract.Address), contract.Address, nameof(gasMeter.GasConsumed), gasMeter.GasConsumed); repository.SetCode(contract.Address, createData.ContractExecutionCode); repository.SetContractType(contract.Address, contract.Type.Name); return(VmExecutionResult.CreationSuccess(contract.Address, internalTransferList, gasMeter.GasConsumed, invocationResult.Return, contractLogger.GetRawLogs())); }
/// <summary> /// Creates a new instance of a smart contract by invoking the contract's constructor /// </summary> public VmExecutionResult Create(IContractState repository, ISmartContractState contractState, byte[] contractCode, object[] parameters, string typeName = null) { this.logger.LogTrace("()"); string typeToInstantiate; ContractByteCode code; // Decompile the contract execution code and validate it. using (IContractModuleDefinition moduleDefinition = this.moduleDefinitionReader.Read(contractCode)) { SmartContractValidationResult validation = moduleDefinition.Validate(this.validator); // If validation failed, refund the sender any remaining gas. if (!validation.IsValid) { this.logger.LogTrace("(-)[CONTRACT_VALIDATION_FAILED]"); return(VmExecutionResult.Error(new SmartContractValidationException(validation.Errors))); } typeToInstantiate = typeName ?? moduleDefinition.ContractType.Name; moduleDefinition.InjectConstructorGas(); code = moduleDefinition.ToByteCode(); } Result <IContract> contractLoadResult = this.Load( code, typeToInstantiate, contractState.Message.ContractAddress.ToUint160(this.network), 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]"); return(VmExecutionResult.Error(exception)); } IContract contract = contractLoadResult.Value; LogExecutionContext(this.logger, contract.State.Block, contract.State.Message, contract.Address); // Set the code and the Type before the method is invoked repository.SetCode(contract.Address, contractCode); repository.SetContractType(contract.Address, typeToInstantiate); // Invoke the constructor of the provided contract code IContractInvocationResult invocationResult = contract.InvokeConstructor(parameters); if (!invocationResult.IsSuccess) { this.logger.LogTrace("[CREATE_CONTRACT_INSTANTIATION_FAILED]"); return(VmExecutionResult.Error(new Exception("Constructor invocation failed!"))); } this.logger.LogTrace("[CREATE_CONTRACT_INSTANTIATION_SUCCEEDED]"); this.logger.LogTrace("(-):{0}={1}", nameof(contract.Address), contract.Address); return(VmExecutionResult.Success(invocationResult.Return, typeToInstantiate)); }