@aws-solutions-constructs/aws-eventbridge-lambda

aws-eventbridge-lambda module

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 This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.

Reference Documentation:	https://docs.aws.amazon.com/solutions/latest/constructs/

Language	Package
Python	aws_solutions_constructs.aws_eventbridge_lambda
Typescript	@aws-solutions-constructs/aws-eventbridge-lambda
Java	software.amazon.awsconstructs.services.eventbridgelambda

This AWS Solutions Construct implements an AWS EventBridge rule and an AWS Lambda function.

Here is a minimal deployable pattern definition in Typescript:

const { EventbridgeToLambdaProps, EventbridgeToLambda } from '@aws-solutions-constructs/aws-eventbridge-lambda';

const props: EventbridgeToLambdaProps = {
    lambdaFunctionProps: {
        code: lambda.Code.fromAsset(`${__dirname}/lambda`),
        runtime: lambda.Runtime.NODEJS_12_X,
        handler: 'index.handler'
    },
    eventRuleProps: {
      schedule: events.Schedule.rate(Duration.minutes(5))
    }
};

new EventbridgeToLambda(this, 'test-eventbridge-lambda', props);

Initializer

new EventbridgeToLambda(scope: Construct, id: string, props: EventbridgeToLambdaProps);

Parameters

• scope Construct
• id string
• props EventbridgeToLambdaProps

Pattern Construct Props

Name	Type	Description
existingLambdaObj?	lambda.Function	Existing instance of Lambda Function object, providing both this and lambdaFunctionProps will cause an error.
lambdaFunctionProps?	lambda.FunctionProps	User provided props to override the default props for the Lambda function.
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

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
lambdaFunction	lambda.Function	Returns an instance of lambda.Function created by the construct

Default settings

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

Amazon EventBridge Rule

• Grant least privilege permissions to EventBridge rule to trigger the Lambda Function

AWS Lambda Function

• Configure limited privilege access IAM role for Lambda function
• Enable reusing connections with Keep-Alive for NodeJs Lambda function
• Enable X-Ray Tracing
• Set Environment Variables
• AWS_NODEJS_CONNECTION_REUSE_ENABLED (for Node 10.x and higher functions)

Architecture

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