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@aws-solutions-constructs/aws-cloudfront-apigateway-lambda

v2.1.0

Published

CDK Constructs for AWS Cloudfront to AWS API Gateway to AWS Lambda integration.

Downloads

5,760

Readme

aws-cloudfront-apigateway-lambda module


Stability: Stable


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

| Language | Package | |:-------------|-----------------| |Python Logo Python|aws_solutions_constructs.aws_cloudfront_apigateway_lambda| |Typescript Logo Typescript|@aws-solutions-constructs/aws-cloudfront-apigateway-lambda| |Java Logo Java|software.amazon.awsconstructs.services.cloudfrontapigatewaylambda|

This AWS Solutions Construct implements an AWS CloudFront fronting an Amazon API Gateway Lambda backed REST API.

Here is a minimal deployable pattern definition in Typescript:

import { CloudFrontToApiGatewayToLambda } from '@aws-solutions-constructs/aws-cloudfront-apigateway-lambda';

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

Initializer

new CloudFrontToApiGatewayToLambda(scope: Construct, id: string, props: CloudFrontToApiGatewayToLambdaProps);

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|Optional user provided props to override the default props for the Lambda function.| |apiGatewayProps?|api.LambdaRestApiProps|Optional user provided props to override the default props for API Gateway| |cloudFrontDistributionProps?|cloudfront.DistributionProps|Optional user provided props to override the default props for CloudFront Distribution| |insertHttpSecurityHeaders?|boolean|Optional user provided props to turn on/off the automatic injection of best practice HTTP security headers in all responses from CloudFront| |logGroupProps?|logs.LogGroupProps|Optional user provided props to override the default props for for the CloudWatchLogs LogGroup.| |cloudFrontLoggingBucketProps?|s3.BucketProps|Optional user provided props to override the default props for the CloudFront Logging Bucket.|

Pattern Properties

| Name | Type | Description | |:-------------|:----------------|-----------------| |cloudFrontWebDistribution|cloudfront.CloudFrontWebDistribution|Returns an instance of cloudfront.CloudFrontWebDistribution created by the construct| |cloudFrontFunction?|cloudfront.Function|Returns an instance of the Cloudfront function created by the pattern.| |cloudFrontLoggingBucket|s3.Bucket|Returns an instance of the logging bucket for CloudFront WebDistribution.| |apiGateway|api.RestApi|Returns an instance of the API Gateway REST API created by the pattern.| |apiGatewayCloudWatchRole?|iam.Role|Returns an instance of the iam.Role created by the construct for API Gateway for CloudWatch access.| |apiGatewayLogGroup|logs.LogGroup|Returns an instance of the LogGroup created by the construct for API Gateway access logging to CloudWatch.| |lambdaFunction|lambda.Function|Returns an instance of the Lambda function created by the pattern.|

Default settings

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

Amazon CloudFront

  • Configure Access logging for CloudFront WebDistribution
  • Enable automatic injection of best practice HTTP security headers in all responses from CloudFront WebDistribution

Amazon API Gateway

  • Deploy a regional API endpoint
  • Enable CloudWatch logging for API Gateway
  • Configure least privilege access IAM role for API Gateway
  • Set the default authorizationType for all API methods to NONE
  • Enable X-Ray Tracing

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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