Package: aws-solutions-constructs.aws-lambda-stepfunctions
aws-lambda-stepfunctions module---Reference Documentation:https://docs.aws.amazon.com/solutions/latest/constructs/LanguagePackagePythonaws_solutions_constructs.aws_lambda_stepfunctionsTypescript@aws-solutions-constructs/aws-lambda-stepfunctionsJavasoftware.amazon.awsconstructs.services.lambdastepfunctionsOverviewThis AWS Solutions Construct implements an AWS Lambda function connected to an AWS Step Functions.Here is a minimal deployable pattern definition:Typescriptimport{Construct}from'constructs';import{Stack,StackProps}from'aws-cdk-lib';import{LambdaToStepfunctions}from'@aws-solutions-constructs/aws-lambda-stepfunctions';import*asstepfunctionsfrom'aws-cdk-lib/aws-stepfunctions';import*aslambdafrom'aws-cdk-lib/aws-lambda';conststartState=newstepfunctions.Pass(this,'StartState');newLambdaToStepfunctions(this,'LambdaToStepfunctionsPattern',{lambdaFunctionProps:{runtime:lambda.Runtime.NODEJS_16_X,handler:'index.handler',code:lambda.Code.fromAsset(`lambda`)},stateMachineProps:{definition:startState}});Pythonfromaws_solutions_constructs.aws_lambda_stepfunctionsimportLambdaToStepfunctionsfromaws_cdkimport(aws_lambdaas_lambda,aws_stepfunctionsasstepfunctions,Stack)fromconstructsimportConstructstart_state=stepfunctions.Pass(self,'start_state')LambdaToStepfunctions(self,'test-lambda-stepfunctions-stack',lambda_function_props=_lambda.FunctionProps(code=_lambda.Code.from_asset('lambda'),runtime=_lambda.Runtime.PYTHON_3_9,handler='index.handler'),state_machine_props=stepfunctions.StateMachineProps(definition=start_state))Javaimportsoftware.constructs.Construct;importsoftware.amazon.awscdk.Stack;importsoftware.amazon.awscdk.StackProps;importsoftware.amazon.awscdk.services.lambda.*;importsoftware.amazon.awscdk.services.lambda.Runtime;importsoftware.amazon.awscdk.services.stepfunctions.*;importsoftware.amazon.awsconstructs.services.lambdastepfunctions.*;finalPassstartState=newPass(this,"StartState");newLambdaToStepfunctions(this,"test-lambda-stepfunctions-stack",newLambdaToStepfunctionsProps.Builder().lambdaFunctionProps(newFunctionProps.Builder().runtime(Runtime.NODEJS_16_X).code(Code.fromAsset("lambda")).handler("index.handler").build()).stateMachineProps(newStateMachineProps.Builder().definition(startState).build()).build());Pattern Construct PropsNameTypeDescriptionexistingLambdaObj?lambda.FunctionExisting instance of Lambda Function object, providing both this andlambdaFunctionPropswill cause an error.lambdaFunctionProps?lambda.FunctionPropsUser provided props to override the default props for the Lambda function.stateMachinePropssfn.StateMachinePropsUser provided props for the sfn.StateMachine.createCloudWatchAlarmsbooleanWhether to create recommended CloudWatch alarmslogGroupProps?logs.LogGroupPropsUser provided props to override the default props for for the CloudWatchLogs LogGroup.stateMachineEnvironmentVariableName?stringOptional Name for the Lambda function environment variable set to the ARN of the state machine. Default: STATE_MACHINE_ARNexistingVpc?ec2.IVpcAn optional, existing VPC into which this pattern should be deployed. When deployed in a VPC, the Lambda function will use ENIs in the VPC to access network resources and an Interface Endpoint will be created in the VPC for Amazon Step Functions. If an existing VPC is provided, thedeployVpcproperty cannot betrue. This usesec2.IVpcto allow clients to supply VPCs that exist outside the stack using theec2.Vpc.fromLookup()method.vpcProps?ec2.VpcPropsOptional user-provided properties to override the default properties for the new VPC.enableDnsHostnames,enableDnsSupport,natGatewaysandsubnetConfigurationare set by the pattern, so any values for those properties supplied here will be overridden. IfdeployVpcis nottruethen this property will be ignored.deployVpc?booleanWhether to create a new VPC based onvpcPropsinto which to deploy this pattern. Setting this to true will deploy the minimal, most private VPC to run the pattern:One isolated subnet in each Availability Zone used by the CDK programenableDnsHostnamesandenableDnsSupportwill both be set to trueIf this property istruethenexistingVpccannot be specified. Defaults tofalse.Pattern PropertiesNameTypeDescriptionlambdaFunctionlambda.FunctionReturns an instance of the Lambda function created by the pattern.stateMachinesfn.StateMachineReturns an instance of StateMachine created by the construct.stateMachineLogGrouplogs.ILogGroupReturns an instance of the ILogGroup created by the construct for StateMachinecloudwatchAlarms?cloudwatch.Alarm[]Returns a list of alarms created by the construct.vpc?ec2.IVpcReturns an interface on the VPC used by the pattern (if any). This may be a VPC created by the pattern or the VPC supplied to the pattern constructor.Default settingsOut of the box implementation of the Construct without any override will set the following defaults:AWS Lambda FunctionConfigure limited privilege access IAM role for Lambda functionEnable reusing connections with Keep-Alive for NodeJs Lambda functionEnable X-Ray TracingSet Environment Variables(default) STATE_MACHINE_ARNAWS_NODEJS_CONNECTION_REUSE_ENABLED (for Node 10.x and higher functions)AWS Step FunctionsEnable CloudWatch logging for API GatewayDeploy best practices CloudWatch Alarms for the Step FunctionsArchitecture© Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.