Pet*_*ala 10 amazon-web-services node.js typescript aws-lambda aws-sam-cli
我们即将开始使用 Lambda 函数。
我们有必须使用 TypeScript 的技术限制。
当从 Postman 调用相关端点时,我希望能够在 VS Code 中调试我的 ts 文件。
所以,我们有以下开发环境:
我已经使用sam initHello World 模板来生成初始文件夹结构。
我已经对其进行了增强(主要基于本文)以使用 TypeScript。
.
??? template.yaml
??? .aws-sam
??? .vscode
| ??? launch.json
??? events
??? hello-world
| ??? dist
| ??? app.js
| ??? app.js.map
| ??? src
| ??? app.ts
| ??? package.json
| ??? tsconfig.json
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template.yaml.
??? template.yaml
??? .aws-sam
??? .vscode
| ??? launch.json
??? events
??? hello-world
| ??? dist
| ??? app.js
| ??? app.js.map
| ??? src
| ??? app.ts
| ??? package.json
| ??? tsconfig.json
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tsconfig.jsonAWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
LambdaWithApiGateWayDebug
Sample SAM Template for LambdaWithApiGateWayDebug
Resources:
HelloWorldFunction:
Type: AWS::Serverless::Function
Properties:
CodeUri: hello-world/dist
Handler: app.lambdaHandler
Runtime: nodejs12.x
Events:
HelloWorld:
Type: Api
Properties:
Path: /hello
Method: get
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package.json{
"compilerOptions": {
"target": "ES2020",
"module": "commonjs",
"sourceMap": true,
"outDir": "./dist",
"strict": true,
"noImplicitAny": true,
"esModuleInterop": true,
"sourceRoot": "./src",
"skipLibCheck": true,
"forceConsistentCasingInFileNames": true
},
"include": ["src/**/*"],
"exclude": ["node_modules", "**/*.spec.ts"]
}
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app.ts{
"name": "hello_world",
"version": "1.0.0",
"description": "hello world sample for NodeJS",
"main": "app.js",
"repository": "https://github.com/awslabs/aws-sam-cli/tree/develop/samcli/local/init/templates/cookiecutter-aws-sam-hello-nodejs",
"scripts": {
"compile": "tsc",
"start": "sam local start-api -t ../template.yaml -p 5000 -d 5678"
},
"dependencies": {
"@types/aws-lambda": "^8.10.64",
"@types/node": "^14.14.10",
"aws-sdk": "^2.805.0",
"source-map-support": "^0.5.19",
"typescript": "^4.1.2"
}
}
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app.jsimport { APIGatewayProxyEvent, APIGatewayProxyResult } from "aws-lambda";
export const lambdaHandler = async (event: APIGatewayProxyEvent): Promise<APIGatewayProxyResult> => {
const queries = JSON.stringify(event.queryStringParameters);
return {
statusCode: 200,
body: `Queries: ${queries}`
}
}
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app.js.map"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.lambdaHandler = void 0;
const lambdaHandler = async (event) => {
const queries = JSON.stringify(event.queryStringParameters);
return {
statusCode: 200,
body: `Queries: ${queries}`
};
};
exports.lambdaHandler = lambdaHandler;
//# sourceMappingURL=app.js.map
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launch.json{"version":3,"file":"app.js","sourceRoot":"./src/","sources":["app.ts"],"names":[],"mappings":";;;AAEO,MAAM,aAAa,GAAG,KAAK,EAAE,KAA2B,EAAkC,EAAE;IAC/F,MAAM,OAAO,GAAG,IAAI,CAAC,SAAS,CAAC,KAAK,CAAC,qBAAqB,CAAC,CAAC;IAC5D,OAAO;QACL,UAAU,EAAE,GAAG;QACf,IAAI,EAAE,YAAY,OAAO,EAAE;KAC5B,CAAA;AACL,CAAC,CAAA;AANY,QAAA,aAAa,iBAMzB"}
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如你看到的:
hello-world/src/app.tshello-world/dist/app.jswith sourcemaphello-world/distvialocalhost:5000/hello端点下的处理程序因此,当我调用npm run startthen 它会打印以下输出:
> hello_world@1.0.0 start C:\temp\AWS\LambdaWithApiGateWayDebug\hello-world
> sam local start-api -t ../template.yaml -p 5000 -d 5678
Mounting HelloWorldFunction at http://127.0.0.1:5000/hello [GET]
You can now browse to the above endpoints to invoke your functions. You do not need to restart/reload SAM CLI while working on your functions, changes will be reflected instantly/automatically. You only need to restart SAM CLI if you update your AWS SAM template
2020-12-08 11:40:48 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
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当我通过 Postman 向端点发出请求时,控制台会扩展为以下文本:
Mounting C:\temp\AWS\LambdaWithApiGateWayDebug\hello-world\dist as /var/task:ro,delegated inside runtime container
START RequestId: 04d884cf-fa96-4d58-b41c-e4196e12de13 Version: $LATEST
Debugger listening on ws://0.0.0.0:5678/d6702717-f291-42cd-8056-22b9f029f4dd
For help, see: https://nodejs.org/en/docs/inspector
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当我附上我的VS代码发送到节点过程那我只能调试app.js,而不是app.ts。
控制台日志结束:
Debugger attached.
END RequestId: 04d884cf-fa96-4d58-b41c-e4196e12de13
REPORT RequestId: 04d884cf-fa96-4d58-b41c-e4196e12de13 Init Duration: 0.12 ms Duration: 7064.19 ms Billed Duration: 7100 ms Memory Size: 128 MB Max Memory Used: 128 MB
No Content-Type given. Defaulting to 'application/json'.
2020-12-08 11:40:58 127.0.0.1 - - [08/Dec/2020 11:40:58] "GET /hello HTTP/1.1" 200 -
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我应该改变什么才能调试我的app.ts而不是app.js?
我写了一篇中等文章,解释了如何创建、调用和调试 TypeScript lambda 函数。请查看以下链接了解更多详情。
要求
1-创建一个nodejs12x;
创建一个 nodejs12x lambda;
安装打字稿: npm i -g typescript
初始化打字稿:(tsc --init它将创建 tsconfig.json 文件)
将创建的 tsconfig.json 文件替换为以下代码:
{
"compilerOptions": {
"module": "CommonJS",
"target": "ES2017",
"noImplicitAny": true,
"preserveConstEnums": true,
"outDir": "./built",
"sourceMap": true
},
"include": ["handler/**/*"],
"exclude": ["node_modules", "**/*.spec.ts"]
}
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删除 app.js 文件;
在处理程序文件夹内的 TypeScript 代码中创建您的 lambda(您需要创建它):
import {
APIGatewayProxyEvent,
APIGatewayProxyResult
} from "aws-lambda";
export const lambdaHandler = async (
event: APIGatewayProxyEvent
): Promise<APIGatewayProxyResult> => {
const queries = JSON.stringify(event.queryStringParameters);
return {
statusCode: 200,
body: `Queries: ${queries}`
}
}
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调整模板.yaml。更改 lambda 的 CodeUri 路径:CodeUri: hello-world/built
安装所需的节点包: npm install typescript @types/aws-lambda @types/node -save-dev
包json:
{
"name": "typescript_lambda",
"version": "1.0.0",
"description": "hello world sample for TypeScript",
"main": "app.js",
"repository": "https://github.com/jafreitas90/AWS",
"author": "Jorge Freitas",
"license": "JorgeFreitas Ltd :)",
"dependencies": {
},
"scripts": {
"compile": "tsc"
},
"devDependencies": {
"@types/aws-lambda": "^8.10.71",
"@types/node": "^14.14.22",
"aws-sdk": "^2.815.0",
"typescript": "^4.1.3"
}
}
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安装
npm 运行编译
在 lambda 函数(TypeScript 代码)中设置断点。在左侧面板上选择调试,然后开始调试(顶部的绿色按钮)。就是这样:)
项目结构
事实证明我犯了两个小错误:
我已经sourceRoot在里面设置了tsconfig.json,在这种情况下是不必要的。include足够的:
{
"compilerOptions": {
"target": "ES2020",
"module": "commonjs",
"sourceMap": true,
"outDir": "./dist",
"strict": true,
"noImplicitAny": true,
"esModuleInterop": true,
// "sourceRoot": "./src",
"skipLibCheck": true,
"forceConsistentCasingInFileNames": true
},
"include": ["src/**/*"],
"exclude": ["node_modules", "**/*.spec.ts"]
}
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我设置了两个断点:一个在 inside app.js,另一个在 inside app.ts。
事实证明,如果app.js确实有一个断点,那么另一个断点将不会被触发。
因此,在我删除断点之后,app.js调试器停止在app.ts.
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