cdk-lambda-fleet

AWS CDK: Lambda Fleet

Deploy multiple AWS Lambda functions as container images to ECR with CDK.

Intention

Have a CloudFormation stack with multiple AWS Lambda functions in different langauges.

Usage

You can fork this repository and create a folder like src/lambda-node-example and store a Dockerfile there:

FROM amazon/aws-lambda-nodejs:12

ARG FUNCTION_DIR="/var/task"

RUN mkdir -p ${FUNCTION_DIR}

COPY package.json ${FUNCTION_DIR}

RUN npm install

COPY handler.js ${FUNCTION_DIR}

CMD [ "handler.run" ]

Using the AWS CDK, a docker image will be created and deployed to Amazon ECR for every folder in src/. After uploading the image, an AWS Lambda will be created or updated to use the latest image.

CDK Construct

When using the AWS CDK in TypeScript, you can use the published LambdaFleet construct:

$ > yarn install cdk-lambda-fleet

import * as path from "path";
import * as cdk from "@aws-cdk/core";

import { LambdaFleet } from "cdk-lambda-fleet";

export class FleetStack extends cdk.Stack {
  constructor(scope: cdk.App, id: string, props?: cdk.StackProps) {
    super(scope, id, props);

    new LambdaFleet(this, "Fleet", {
      path: path.resolve(__dirname, "../src"),
    });
  }
}

Examples

• src/lambda-node-example
• src/lambda-python-example
• src/lambda-typescript-example

Deployment

# Deploy all functions

$ > yarn deploy

Usage

Fleet.FleetLambdaNodeExampleArnXYZ = "arn:aws:lambda:eu-central-1:123:function:Fleet-FleetLambdaNodeExampleXYZ-XYZ"
Fleet.FleetLambdaPythonExampleArnXYZ = "arn:aws:lambda:eu-central-1:123:function:Fleet-FleetLambdaPythonExampleXYZ-XYZ"
Fleet.FleetLambdaTypescriptExampleArnXYZ = "arn:aws:lambda:eu-central-1:123:function:Fleet-FleetLambdaTypescriptExampleXYZ-XYZ"