A Cloud Native Buildpack for AWS Lambda
Create a function by adding the following code to an index.js file:
"use strict";
exports.handler = async (event, context) => {
return '{"message": "Hello World!"}';
}Initialize the app:
$ npm initInstall the Pack CLI and run the buildpack:
$ pack build --builder jkutner/aws-lambda-builder:18 --trust-builder my-lambda(note: you can also use the Heroku builder if you need additional system packages. Try this if you write a more elaborate function and you get an error at runtime)
Run your lambda image locally:
$ docker run -p 9000:9000 my-lambdaAnd test it:
$ curl -XPOST "http://localhost:9000/2015-03-31/functions/function/invocations" -d '{}'
"Hello World!"Then create a lambda and deploy following the AWS Lambda guide to Container Image Support. In short:
$ aws ecr create-repository --repository-name my-lambda --image-scanning-configuration scanOnPush=true
$ docker tag random-letter:latest <image-repo>/my-lambda:latest
$ aws ecr get-login-password | docker login --username AWS --password-stdin <image-repo>
$ docker push <image-repo>/my-lambda:latest
Then create the Lambda and a Trigger via the AWS Console.
By default, the buildpack will try to execute a handler named index.handler (matching the exports.handler in index.js). You can customize this by setting the HANDLER environment variable (ex. docker run -e HANDLER="foo.bar" ...). Or you can add a Procfile to the repo to completely override the launch process.
Follow the Heroku Node.js Support guide for information on customizing the Node.js and NPM environments.
If you want to work with the buildpack independent of the jkutner/aws-lambda-builder image, run make create-buildpack to package a jkutner/aws-lambda-cnb image containing the buildpack.
By default, this repo is setup to use the jkutner/aws-lambda:18-tiny image, which is NOT production ready.
If you would prefer to ship a more secure and full-featured run-image (but also larger), you can use the Heroku stack image by using the heroku/buildpacks:18 builder image:
$ pack build --builder heroku/buildpacks:18 --buildpack jkutner/aws-lambda my-lambda
MIT