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AWS CDKのフォルダ階層の変更をしたメモ

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概要

前回までにApiGatewayが使えるまでになった。
ここで、「形で考えるサーバーレス設計」のCDKテンプレートとフォルダ構造がずれていたので、揃えてみる。

ソースコード

修正

  • cdk以下にaws cdk関係のファイルを移動
  • フォルダ階層を反映する必要があるものは修正

setup

cdk/lib/process/setup.ts
#!/usr/bin/env node
import * as childProcess from 'child_process';
import * as fs from 'fs-extra';
import * as path from 'path'

const bundlePath = './bundle';
export const NODE_LAMBDA_LAYER_DIR = path.resolve(process.cwd(), bundlePath);
const NODE_LAMBDA_LAYER_RUNTIME_DIR_NAME = `nodejs`;
const runtimeDirName = path.resolve(process.cwd(), `${bundlePath}/${NODE_LAMBDA_LAYER_RUNTIME_DIR_NAME}`);
const distFilePath = (file: string) => path.resolve(process.cwd(), `${bundlePath}/${NODE_LAMBDA_LAYER_RUNTIME_DIR_NAME}/${file}`)
- const srcFilePath = (file: string) => path.resolve(`${process.cwd()}/${file}`)
+ const srcFilePath = (file: string) => path.resolve(`${process.cwd()}/../${file}`)

export const bundleNpm = () => {
  // create bundle directory
  copyPackageJson();

stack

cdk/lib/sample-stack.ts
import * as cdk from '@aws-cdk/core';
import * as lambda from '@aws-cdk/aws-lambda';
import { NodejsFunction } from '@aws-cdk/aws-lambda-nodejs';
import * as apigateway from '@aws-cdk/aws-apigateway'
import { NODE_LAMBDA_LAYER_DIR } from './process/setup';

export class SampleStack extends cdk.Stack {
  constructor(scope: cdk.Construct, id: string, props?: cdk.StackProps) {
    super(scope, id, props);
+    const entryHandlerDir = '../src/lambda/handlers/';
    const helloFunction = new NodejsFunction(this, 'hello', {
      runtime: lambda.Runtime.NODEJS_14_X,
-      entry: `src/lambda/handlers/hello.ts`,
+      entry: `${entryHandlerDir}/hello.ts`,
      functionName: 'kotahello',
      handler: 'lambdaHandler'
    });

参考

Website & Mobile starter project - github
サーバーレスをこれから始める方へ!「形で考えるサーバーレス設計」のCDKテンプレート(web/mBaaS編)を試して解説してみた
【AWS】 CDKの始め方

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