CDK 와 Serverless express 사용해 보기

root
 - packages
  - iac ← CDK 구성
  - server ← Serverless express 구성
package.json
...

{
  "name": "root",
  "private": true,
  ...
  "scripts": {
   ...
  },
  ...
  "workspaces": [
    "packages/server",
    "packages/iac"
  ]
}

npx cdk init --language typescript

npm install express
npm install @codegenie/serverless-express
npm install cors
npm install --save-dev @types/cors

...
    // Lambda
    const restApiFunc = new cdk.aws_lambda_nodejs.NodejsFunction(
      this,
      'RestApiFunc',
      {
        architecture: cdk.aws_lambda.Architecture.ARM_64,
        runtime: cdk.aws_lambda.Runtime.NODEJS_20_X,
        entry: "../server/src/index.ts",
      }
    );

    // REST API
    const restApi = new cdk.aws_apigateway.LambdaRestApi(this, 'RestApi', {
      handler: restApiFunc,
      defaultCorsPreflightOptions: {
        allowOrigins: cdk.aws_apigateway.Cors.ALL_ORIGINS,
        allowMethods: cdk.aws_apigateway.Cors.ALL_METHODS,
        allowHeaders: cdk.aws_apigateway.Cors.DEFAULT_HEADERS,
        maxAge: cdk.Duration.minutes(5),
      }, 
      deployOptions: {
        stageName: 'v1', 
        tracingEnabled: false, 
      },
    });

    // API Gateway
    new cdk.CfnOutput(this, 'RestApiEndpoint', {
      value: restApi.deploymentStage.urlForPath(),
    });
...

import serverlessExpress from '@codegenie/serverless-express';
import cors from 'cors';
import express, { Request, Response } from 'express';

const app = express();
app.use(cors());
app.use(express.json());

app.get('/', async (_req: Request, res: Response): Promise<void> => {
  res.status(200).send("Hello serverless express!");
});

export const handler = serverlessExpress({ app });

npm run cdk bootstrap ← 최초만 실행 
npm run cdk deploy

curl -X GET -H "Content-Type: application/json" https://xxxxxxxx.execute-api.[region].amazonaws.com/v1/