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

aws-sns-lambda module

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

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

Overview

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

Here is a minimal deployable pattern definition:

Typescript

import { Construct } from 'constructs';
import { Stack, StackProps } from 'aws-cdk-lib';
import { SnsToLambda, SnsToLambdaProps } from "@aws-solutions-constructs/aws-sns-lambda";
import * as lambda from 'aws-cdk-lib/aws-lambda';

new SnsToLambda(this, 'test-sns-lambda', {
  lambdaFunctionProps: {
    runtime: lambda.Runtime.NODEJS_16_X,
    handler: 'index.handler',
    code: lambda.Code.fromAsset(`lambda`)
  }
});

Python

from aws_solutions_constructs.aws_sns_lambda import SnsToLambda
from aws_cdk import (
    aws_lambda as _lambda,
    Stack
)
from constructs import Construct

SnsToLambda(self, 'test_sns_lambda',
            lambda_function_props=_lambda.FunctionProps(
                code=_lambda.Code.from_asset('lambda'),
                runtime=_lambda.Runtime.PYTHON_3_9,
                handler='index.handler'
            )
            )

Java

import software.constructs.Construct;

import software.amazon.awscdk.Stack;
import software.amazon.awscdk.StackProps;
import software.amazon.awscdk.services.lambda.*;
import software.amazon.awscdk.services.lambda.Runtime;
import software.amazon.awsconstructs.services.snslambda.*;

new SnsToLambda(this, "test-lambda-sqs-stack", new SnsToLambdaProps.Builder()
        .lambdaFunctionProps(new FunctionProps.Builder()
                .runtime(Runtime.NODEJS_16_X)
                .code(Code.fromAsset("lambda"))
                .handler("index.handler")
                .build())
        .build());

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.
enableEncryptionWithCustomerManagedKey?	`boolean`	If no key is provided, this flag determines whether the SNS Topic is encrypted with a new CMK or an AWS managed key. This flag is ignored if any of the following are defined: topicProps.masterKey, encryptionKey or encryptionKeyProps.
encryptionKey?	`kms.Key`	An optional, imported encryption key to encrypt the SNS Topic with.
encryptionKeyProps?	`kms.KeyProps`	Optional user provided properties to override the default properties for the KMS encryption key used to encrypt the SNS Topic with.

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

aws cdk awscdk AWS Solutions Constructs Amazon SNS AWS Lambda

@aws-cdk/integ-tests-alpha @aws-solutions-constructs/core constructs

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