public ISmartContractExecutionResult Execute(ISmartContractTransactionContext transactionContext) { this.logger.LogTrace("()"); var carrier = SmartContractCarrier.Deserialize(transactionContext); // Get the contract code (dll) from the repository. byte[] contractExecutionCode = this.stateSnapshot.GetCode(carrier.CallData.ContractAddress); if (contractExecutionCode == null) { return(SmartContractExecutionResult.ContractDoesNotExist(carrier)); } // Execute the call to the contract. return(this.CreateContextAndExecute(carrier.CallData.ContractAddress, contractExecutionCode, carrier.CallData.MethodName, transactionContext, carrier)); }
public ISmartContractExecutionResult Execute(ISmartContractTransactionContext transactionContext) { this.logger.LogTrace("()"); var carrier = SmartContractCarrier.Deserialize(transactionContext); // Create a new address for the contract. uint160 newContractAddress = carrier.GetNewContractAddress(); // Create an account for the contract in the state repository. this.stateSnapshot.CreateAccount(newContractAddress); // Decompile the contract execution code and validate it. SmartContractDecompilation decompilation = SmartContractDecompiler.GetModuleDefinition(carrier.CallData.ContractExecutionCode); SmartContractValidationResult validation = this.validator.Validate(decompilation); // If validation failed, refund the sender any remaining gas. if (!validation.IsValid) { this.logger.LogTrace("(-)[CONTRACT_VALIDATION_FAILED]"); return(SmartContractExecutionResult.ValidationFailed(carrier, validation)); } var block = new Block(transactionContext.BlockHeight, transactionContext.CoinbaseAddress.ToAddress(this.network)); var executionContext = new SmartContractExecutionContext ( block, new Message( newContractAddress.ToAddress(this.network), carrier.Sender.ToAddress(this.network), carrier.Value, carrier.CallData.GasLimit ), newContractAddress, carrier.CallData.GasPrice, carrier.MethodParameters ); LogExecutionContext(this.logger, block, executionContext.Message, newContractAddress, carrier); var gasMeter = new GasMeter(carrier.CallData.GasLimit); IPersistenceStrategy persistenceStrategy = new MeteredPersistenceStrategy(this.stateSnapshot, gasMeter, new BasicKeyEncodingStrategy()); var persistentState = new PersistentState(persistenceStrategy, newContractAddress, this.network); gasMeter.Spend((Gas)GasPriceList.BaseCost); var result = this.vm.Create(carrier.CallData.ContractExecutionCode, executionContext, gasMeter, persistentState, this.stateSnapshot); var revert = result.ExecutionException != null; var internalTransaction = this.transferProcessor.Process( carrier, this.stateSnapshot, transactionContext, result.InternalTransfers, revert); (var fee, var refundTxOuts) = this.refundProcessor.Process( carrier, transactionContext.MempoolFee, result.GasConsumed, result.ExecutionException); var executionResult = new SmartContractExecutionResult { NewContractAddress = revert ? null : newContractAddress, Exception = result.ExecutionException, GasConsumed = result.GasConsumed, Return = result.Result, InternalTransaction = internalTransaction, Fee = fee, Refunds = refundTxOuts }; if (revert) { this.logger.LogTrace("(-)[CONTRACT_EXECUTION_FAILED]"); this.stateSnapshot.Rollback(); } else { this.logger.LogTrace("(-):{0}={1}", nameof(newContractAddress), newContractAddress); this.stateSnapshot.SetCode(newContractAddress, carrier.CallData.ContractExecutionCode); this.stateSnapshot.Commit(); } return(executionResult); }