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@aws-solutions-constructs/aws-sns-lambda

v2.1.0

Published

CDK Constructs for AWS SNS to AWS Lambda integration

Downloads

1,624

Readme

aws-sns-lambda module


Stability: Stable


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

| Language | Package | |:-------------|-----------------| |Python Logo Python|aws_solutions_constructs.aws_sns_lambda| |Typescript Logo Typescript|@aws-solutions-constructs/aws-sns-lambda| |Java Logo Java|software.amazon.awsconstructs.services.snslambda|

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";

new SnsToLambda(this, 'test-sns-lambda', {
    lambdaFunctionProps: {
        runtime: lambda.Runtime.NODEJS_14_X,
        handler: 'index.handler',
        code: lambda.Code.fromAsset(`${__dirname}/lambda`)
    }
});

Initializer

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

Parameters

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.| |existingTopicObj?|sns.Topic|Existing instance of SNS Topic object, providing both this and topicProps will cause an error.| |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 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

Architecture Diagram


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