Automating Lambda Deployments with AWS CDK Pipelines

Introduction

AWS CDK Pipelines provide CI/CD for infrastructure and applications using constructs and stages.

Prerequisites

• AWS CDK v2
• GitHub repository

Step 1: Install Pipeline Module

npm install aws-cdk-lib@aws-cdk/pipelines constructs

Step 2: Define Pipeline Stack

Edit bin/pipeline.ts:

import * as cdk from 'aws-cdk-lib';
import { CodePipeline, CodePipelineSource, ShellStep } from 'aws-cdk-lib/pipelines';
import { CdkInfraStack } from './cdk-infra-stack';

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

    const pipeline = new CodePipeline(this, 'Pipeline', {
      pipelineName: 'LambdaDeployPipeline',
      synth: new ShellStep('Synth', {
        input: CodePipelineSource.gitHub('owner/repo', 'main'),
        commands: ['npm ci', 'npm run build', 'npx cdk synth'],
      }),
    });

    const preProd = pipeline.addStage(new CdkInfraStack(pipeline, 'PreProd', {}));
    preProd.addPost(new ShellStep('TestPreProd', {
      commands: ['curl -Ssf $ENDPOINT_URL/health'],
      envFromCfnOutputs: {
        ENDPOINT_URL: pipeline.stackOutput(preProd.stackName + '.EndpointURL'),
      },
    }));
  }
}

Step 3: Deploy Pipeline

cdk deploy PipelineStack

Step 4: Observe Pipeline

Monitor in AWS CodePipeline console. On each push to main, pipeline runs synth, deploys infra, and runs tests.

Summary

CDK Pipelines automate continuous delivery of serverless apps and infrastructure, enabling rapid and reliable updates.