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CDK Constructs for deploying AWS Events Rule that invokes AWS Step Functions




aws-eventbridge-stepfunctions module

Stability: Stable

| Reference Documentation:|| |:-------------|:-------------|

| Language | Package | |:-------------|-----------------| |Python Logo Python|aws_solutions_constructs.aws_eventbridge_stepfunctions| |Typescript Logo Typescript|@aws-solutions-constructs/aws-eventbridge-stepfunctions| |Java Logo Java||

This AWS Solutions Construct implements an AWS Events rule and an AWS Step Functions State Machine

Here is a minimal deployable pattern definition in Typescript:

const { EventbridgeToStepfunctions, EventbridgeToStepfunctionsProps } from '@aws-solutions-constructs/aws-eventbridge-stepfunctions';

const startState = new stepfunctions.Pass(this, 'StartState');

const props: EventbridgeToStepfunctionsProps = {
    stateMachineProps: {
      definition: startState
    eventRuleProps: {
      schedule: events.Schedule.rate(Duration.minutes(5))

new EventbridgeToStepfunctions(stack, 'test-eventbridge-stepfunctions-stack', props);


new EventbridgeToStepfunctions(scope: Construct, id: string, props: EventbridgeToStepfunctionsProps);


Pattern Construct Props

| Name | Type | Description | |:-------------|:----------------|-----------------| |stateMachineProps|sfn.StateMachineProps|Optional user provided props to override the default props for sfn.StateMachine| |existingEventBusInterface?|events.IEventBus| Optional user-provided custom EventBus for construct to use. Providing both this and eventBusProps results an error.| |eventBusProps?|events.EventBusProps|Optional user-provided properties to override the default properties when creating a custom EventBus. Setting this value to {} will create a custom EventBus using all default properties. If neither this nor existingEventBusInterface is provided the construct will use the default EventBus. Providing both this and existingEventBusInterface results an error.| |eventRuleProps|events.RuleProps|User provided eventRuleProps to override the defaults| |createCloudWatchAlarms|boolean|Whether to create recommended CloudWatch alarms| |logGroupProps?|logs.LogGroupProps|User provided props to override the default props for for the CloudWatchLogs LogGroup.|

Pattern Properties

| Name | Type | Description | |:-------------|:----------------|-----------------| |eventBus?|events.IEventBus|Returns the instance of events.IEventBus used by the construct| |eventsRule|events.Rule|Returns an instance of events.Rule created by the construct| |stateMachine|sfn.StateMachine|Returns an instance of sfn.StateMachine created by the construct| |stateMachineLogGroup|logs.ILogGroup|Returns an instance of the ILogGroup created by the construct for StateMachine| |cloudwatchAlarms?|cloudwatch.Alarm[]|Returns a list of cloudwatch.Alarm created by the construct|

Default settings

Out of the box implementation of the Construct without any override will set the following defaults:

Amazon CloudWatch Events Rule

  • Grant least privilege permissions to CloudWatch Events to trigger the Lambda Function

AWS Step Function

  • Enable CloudWatch logging for API Gateway
  • Deploy best practices CloudWatch Alarms for the Step Function


Architecture Diagram

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