aws-events-rule-step-function

All classes are under active development and subject to non-backward compatible changes or removal in any future version. These are not subject to the Semantic Versioning model. This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.

Language	Package
Python	aws_solutions_constructs.aws_events_rule_step_function
Typescript	@aws-solutions-constructs/aws-events-rule-step-function
Java	software.amazon.awsconstructs.services.eventsrulestepfunction

This AWS Solutions Constructs pattern implements an AWS Events rule and an AWS Step function.

Here is a minimal deployable pattern definition:

const { EventsRuleToStepFunction, EventsRuleToStepFunctionProps } = require('@aws-solutions-constructs/aws-events-rule-step-function');

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

const props: EventsRuleToStepFunctionProps = {
    stateMachineProps: {
      definition: startState
    },
    eventRuleProps: {
      schedule: events.Schedule.rate(Duration.minutes(5))
    }
};

new EventsRuleToStepFunction(stack, 'test-events-rule-step-function-stack', props);

Initializer

new EventsRuleToStepFunction(scope: Construct, id: string, props: EventsRuleToStepFunctionProps);

Parameters

• scope Construct

• id string

• props EventsRuleToStepFunctionProps

Pattern Construct Props

Name	Type	Description
stateMachineProps	sfn.StateMachineProps	Optional user provided props to override the default props for sfn.StateMachine
eventRuleProps	events.RuleProps	User provided eventRuleProps to override the defaults

Pattern Properties

Name	Type	Description
cloudwatchAlarms	cloudwatch.Alarm[]	Returns a list of one or more CloudWatch alarms created by the pattern.
eventsRule	events.Rule	Returns an instance of the Events rule created by the pattern.
stateMachine	sfn.StateMachine	Returns an instance of the state machine created by the pattern.
stateMachineLogGroup	logs.LogGroup	Returns an instance of the log group created by the pattern for the state machine.

Default settings

Out-of-the-box implementation of this pattern without any overrides 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