CDKaaL - CDK as a Layer

This package will help you install CDK as a Lambda Layer. An example use-case for this is if you are using Lamdba as a mechanism to deploy your applications.

How to install

Here's a couple easy options for you:

1. Install Layer using ARN:

Go to your Lambda and click Add a Layer

arn:aws:lambda:us-east-1:588317532452:layer:CDKaaL:1

Note: the layer is built using nodejs12.x and is in us-east-. If you need another version or region, please open an issue and I can update this.

Note: this is on version 1, and last updated on 02/02/2020

2. Zip and Install Layer Yourself

git clone https://github.com/campionfellin/CDKaaL.git
cd CDKaal/nodejs
npm i
cd ..
zip -r nodejs.zip nodejs

Then go to Lamba layers and upload nodejs.zip as your source code.

How to use

This layer can be used in 2 ways:

1. As a standard dependency:

In your Lambda's code, you can use

import cdk = require('@aws-cdk/core');

as you normally would, without needing to upload the entire aws-cdk node module as part of your Lambda deployment. Right now the zipped size of aws-cdk is ~15mb and the unzipped size is ~70mb.

2. As a CLI:

This will also install the AWS-CDK CLI at /opt/nodejs/cdk so you can deploy CDK apps with your Lambda.

Example usage in a NodeJS Lambda:

const { exec } = require('child_process');

exec(`/opt/nodejs/cdk --version`, (err, stdout, stderr) => {
  .
  .
  .    
});