aws-solutions-constructs.aws-s3-lambda 1.48.0

CDK Constructs for AWS S3 to AWS Lambda integration

aws-s3-lambda module

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 This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.

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

Language	Package
Python	aws_solutions_constructs.aws_s3_lambda
Typescript	@aws-solutions-constructs/aws-s3-lambda
Java	software.amazon.awsconstructs.services.s3lambda

This AWS Solutions Construct implements an Amazon S3 bucket connected to an AWS Lambda function.

Here is a minimal deployable pattern definition:

const { S3ToLambdaProps, S3ToLambda } = require('@aws-solutions-constructs/aws-s3-lambda');

const stack = new Stack(app, 'test-s3-lambda-stack');

const props: S3ToLambdaProps = {
    deployLambda: true,
    lambdaFunctionProps: {
        code: lambda.Code.asset(`${__dirname}/lambda`),
        runtime: lambda.Runtime.NODEJS_12_X,
        handler: 'index.handler'
    },
};

new S3ToLambda(stack, 'test-s3-lambda', props);

Initializer

new S3ToLambda(scope: Construct, id: string, props: S3ToLambdaProps);

Parameters

• scope Construct
• id string
• props S3ToLambdaProps

Pattern Construct Props

Name	Type	Description
deployLambda	boolean	Whether to create a new Lambda function or use an existing Lambda function. If set to false, you must provide an existing function for the existingLambdaObj property.
existingLambdaObj?	lambda.Function	An optional, existing Lambda function. This property is required if deployLambda is set to false.
lambdaFunctionProps?	lambda.FunctionProps	Optional user-provided props to override the default props for the Lambda function. This property is only required if deployLambda is set to true.
deployBucket?	boolean	Whether to create a S3 Bucket or use an existing S3 Bucket
existingBucketObj?	s3.Bucket	Existing instance of S3 Bucket object
bucketProps?	s3.BucketProps	Optional user provided props to override the default props for S3 Bucket
s3EventSourceProps?	S3EventSourceProps	Optional user provided props to override the default props for S3EventSourceProps

Pattern Properties

Name	Type	Description
lambdaFunction	lambda.Function	Returns an instance of the lambda.Function created by the construct
s3Bucket	s3.Bucket	Returns an instance of the s3.Bucket created by the construct

Default settings

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

Amazon S3 Bucket

• Configure Access logging for S3 Bucket
• Enable server-side encryption for S3 Bucket using AWS managed KMS Key
• Turn on the versioning for S3 Bucket
• Don't allow public access for S3 Bucket
• Retain the S3 Bucket when deleting the CloudFormation stack

AWS Lambda Function

• Configure least privilege access IAM role for Lambda function
• Enable reusing connections with Keep-Alive for NodeJs Lambda function

Architecture

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