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CDK Constructs for AWS SNS to AWS Lambda integration

Project description

aws-sns-lambda module


Stability: Experimental

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 This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.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:
Language Package
Python Logo Python aws_solutions_constructs.aws_sns_lambda
Typescript Logo Typescript @aws-solutions-constructs/aws-sns-lambda
Java Logo Java

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

Here is a minimal deployable pattern definition in Typescript:

import { SnsToLambda, SnsToLambdaProps } from "@aws-solutions-constructs/aws-sns-lambda";

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

new SnsToLambda(this, 'test-sns-lambda', props);


new SnsToLambda(scope: Construct, id: string, props: SnsToLambdaProps);


Pattern Construct Props

Name Type Description
existingLambdaObj? lambda.Function Existing instance of Lambda Function object, if this is set then the lambdaFunctionProps is ignored.
lambdaFunctionProps? lambda.FunctionProps User provided props to override the default props for the Lambda function.
existingTopicObj? sns.Topic Existing instance of SNS Topic object, if this is set then the topicProps is ignored.
topicProps? sns.TopicProps Optional user provided properties to override the default properties for the SNS topic.

Pattern Properties

Name Type Description
lambdaFunction lambda.Function Returns an instance of the Lambda function created by the pattern.
snsTopic sns.Topic Returns an instance of the SNS topic created by the pattern.

Default settings

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

Amazon SNS Topic

  • Configure least privilege access permissions for SNS Topic
  • Enable server-side encryption for SNS Topic using AWS managed KMS Key
  • Enforce encryption of data in transit

AWS Lambda Function

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


Architecture Diagram

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