【AWS Lambda使い方ガイド】AWS CLIから簡単なランタイムNodejs v18対応のLambdaをデプロイする手順

            $ aws iam list-roles | grep Arn
#...ARNのリストが表示される
            "Arn": "arn:aws:iam::************:role/<Lambdaに割り当てる実行権限ロール>",
            #...

#もしくはjqコマンドが使える場合
$ aws iam list-roles | jq '.Roles[].Arn'
#...ARNのリストが表示される
"arn:aws:iam::************:role/<Lambdaに割り当てる実行権限ロール>"
#...

        

            $ touch package.json index.ts

        

            {
  "name": "my-lambda",
  "version": "0.0.1",
  "description": "To execise to use AWS lambda with nodejs18."
}

        

            $ yarn init

        

            $ yarn add typescript @types/node tslib -D

        

            $ yarn tsc --init

        

            $ yarn add esbuild -D
$ touch esbuild.config.js

        

            import esbuild from 'esbuild';

esbuild.build({
    entryPoints: [
        './iindex.ts',
    ],
    outdir: 'build',
    outExtension: { '.js': '.mjs' },
    bundle: true,
    minify: true,
    platform: 'node',
    sourcemap: false,
    target: ['node18'],
    plugins: [],
    external: [],
}).catch(() => process.exit(1));

        

            {
    "name": "my-lambda",
    "version": "0.0.1",
    "description": "To execise to use AWS lambda with nodejs18.",
    "scripts": {
        "build": "rm -rf build && node esbuild.config.js"
    },
    "type": "module",
    "devDependencies": {
        "tslib": "^2.4.1",
        "@types/node": "^20.0.0",
        "esbuild": "^0.18.2",
        "typescript": "^4.9.4"
    }
}

        

            //...中略
esbuild.build({
    //...
    external: [
        'shelljs',
        'pm2'
    ],
}).catch(() => process.exit(1));

        

            export const handler = async (event: any, context: any) => {
    const response: any = { statusCode: 200, body: '' };
    try {
        response.body = {message: 'HELLO, NODEJS V18!!!'};
        return response;
    } catch (error) {
        response.statusCode = 500;
        response.body = `ERROR: ${error}`;
        return response;
    }
}

        

            $ yarn build
$ ls -la build/
-rw-r--r--    1 node     node           655 Jun 14 07:45 index.mjs

        

            $ mkdir tmp
$ zip -rj tmp/my-function.zip build/*

        

            $ zip -r tmp/my-function.zip build/*

        

            $ zipinfo -1 my-function.zip
build/index.mjs

        

            2023-06-14T11:14:24.790Z undefined ERROR Uncaught Exception
{
    "errorType": "Runtime.ImportModuleError",
    "errorMessage": "Error: Cannot find module 'index'\nRequire stack:\n- /var/runtime/index.mjs",
    "stack": [
        "Runtime.ImportModuleError: Error: Cannot find module 'index'",
        "Require stack:",
        "- /var/runtime/index.mjs",
        "    at _loadUserApp (file:///var/runtime/index.mjs:997:17)",
        "    at async UserFunction.js.module.exports.load (file:///var/runtime/index.mjs:1032:21)",
        "    at async start (file:///var/runtime/index.mjs:1195:23)",
        "    at async file:///var/runtime/index.mjs:1201:1"
    ]
}

        

            $ zip -rj tmp/my-function.zip build/*

        

            $ zipinfo -1 my-function.zip
index.mjs

        

            $ aws lambda create-function \
    --function-name [Lambdaの関数名] \
    --runtime nodejs18.x \
    --zip-file fileb://tmp/my-function.zip \
    --role [Lambdaに割り当てる実行権限ロールのARN] \
    --handler index.handler

        

            $ aws lambda list-functions | grep FunctionName
#...
            "FunctionName": "Lambdaの関数名",
#...

        

            $ aws lambda invoke \
    --function-name [Lambdaの関数名] \
    --payload '{"key1":"value1","key2":"value2","key3": "value3"}' \
    response.json
#👇レスポンス
{
    "StatusCode": 200,
    "ExecutedVersion": "$LATEST"
}

        

            $ aws lambda update-function-code \
    --function-name [Lambdaの関数名] \
    --zip-file fileb://tmp/my-function.zip

        

            $ aws lambda delete-function \
    --function-name [Lambdaの関数名]