Remix.run - AWS API Gateway v2 - S3 Integration - Lambda

cdk-remix-run.stack.ts

import * as cdk from 'aws-cdk-lib';
import type { Construct } from "constructs";
import { NodejsFunction } from "aws-cdk-lib/aws-lambda-nodejs";
import { RemovalPolicy } from 'aws-cdk-lib';
import { RetentionDays } from 'aws-cdk-lib/aws-logs';
import { Alias, Runtime } from 'aws-cdk-lib/aws-lambda';
import {
  HttpApi, HttpMethod,
} from '@aws-cdk/aws-apigatewayv2-alpha';
import { HttpLambdaIntegration, HttpUrlIntegration } from '@aws-cdk/aws-apigatewayv2-integrations-alpha';
import { Bucket, ObjectOwnership } from 'aws-cdk-lib/aws-s3';
import { BucketDeployment, Source } from 'aws-cdk-lib/aws-s3-deployment';

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

    const httpApi = new HttpApi(this, 'HttpApi')

    const assetsBucket = new Bucket(this, "AssetsBucket", {
      autoDeleteObjects: true,
      publicReadAccess: true,
      removalPolicy: RemovalPolicy.DESTROY,
      websiteIndexDocument: 'index.html',
      objectOwnership: ObjectOwnership.BUCKET_OWNER_ENFORCED
    });

    new BucketDeployment(this, 'DeployWebsite', {
      sources: [Source.asset('./public/build')],
      destinationBucket: assetsBucket,
      destinationKeyPrefix: 'build/'
    });

    const remixFn = new NodejsFunction(this, "RemixFn", {
      runtime: Runtime.NODEJS_18_X,
      currentVersionOptions: {
        removalPolicy: RemovalPolicy.DESTROY,
      },
      handler: 'handler',
      entry: "remix.handler.ts",
      logRetention: RetentionDays.ONE_WEEK,
      memorySize: 512,
      timeout: cdk.Duration.seconds(10),
    });
    const version = remixFn.currentVersion;
    const remixFnProdAlias = new Alias(this, 'RemixFnProdAlias', {
      aliasName: 'Prod',
      provisionedConcurrentExecutions: 1,
      version,
    })


    const assetsIntegration = new HttpUrlIntegration('AssetsIntegration', `https://${assetsBucket.bucketDomainName}/{proxy}`, {
      method: HttpMethod.GET,
    });
    const lambdaIntegration = new HttpLambdaIntegration('lambdaIntegration', remixFnProdAlias);

    httpApi.addRoutes({
      path: '/{proxy+}',
      methods: [ HttpMethod.ANY ],
      integration: lambdaIntegration,
    });

    httpApi.addRoutes({
      path: '/_static/{proxy+}',
      methods: [ HttpMethod.GET ],
      integration: assetsIntegration,
    })
  }
}