我可以将AWS API Gateway用作S3网站的反向代理吗? [英] Can I use AWS API Gateway as a reverse proxy for a S3 website?

问题描述

我在AWS S3上有一个无服务器网站.但是S3有一个我想克服的局限性:它不允许我拥有友好的URL.

I have a serverless website on AWS S3. But S3 have a limitation that I want to overcome: it don't allow me to have friendly URLs.

例如，我想替换URL:

For example, I would like to replace URL:

www.mywebsite.com/user.html?login=daniel

www.mywebsite.com/user.html?login=daniel

使用此网址友好:

www.mywebsite.com/user/daniel

www.mywebsite.com/user/daniel

因此，我想知道是否可以将Lambda与API Gateway一起使用来实现这一目标.

So, I would like to know if I can use Lambda together with API Gateway to achieve this.

我的想法是:

API网关---> Lambda函数--->获取S3资源

API Gateway ---> Lambda function ---> fetch S3 resource

API网关将获取ANY请求，并将信息传递给Lambda函数，该函数将使用请求URL处理某些逻辑(可能包括一些数据库查询)，然后从S3中获取资源.

The API Gateway will get ANY request, and pass information to a Lambda funcion, that will process some logic using the request URL (including maybe some database query) and then fetch the resource from S3.

我知道AWS API Gateway的主要目的是成为REST API的网关，但是我们也可以将其用作整个网站的代理吗?

I know AWS API Gateway main purpose is to be a gateway to REST APIs, but can we also use it as a proxy to an entire website?

推荐答案

可以将API Gateway用作S3网站的反向代理.

It is possible to use API Gateway as a reverse proxy for a S3 website.

我能够按照以下步骤进行操作:

I was able to do that following steps below:

• 在AWS API Gateway中，使用资源路径="{proxy +}"创建一个代理资源"
• 转到AWS Certificate Manager，并为您的网站(* .mywebsite.com)请求通配符证书
• AWS会告诉您在域名注册机构中创建CNAME记录，以验证您是否拥有该域名
• 验证证书之后，转到AWS API Gateway并创建一个自定义域名(单击自定义域名"，然后单击创建自定义域名").在域名"中，输入您的域(www.mywebsite.com)，然后选择您刚创建的ACM证书(上述步骤1).创建一个路径为"/"的基本路径映射"，并在目标"中选择您的API和阶段.
• 之后，您将需要添加另一个CNAME记录，以及为该自定义域名生成的CloudFront目标域名".

在Lambda中，我们可以路由请求:

In the Lambda, we can route the requests:

'use strict';

const AWS = require('aws-sdk');
const s3 = new AWS.S3();
const myBucket = 'myBucket';

exports.handler = async (event) => {

    var responseBody = "";

    if (event.path=="/") {
        responseBody = "<h1>My Landing Page</h1>";
        responseBody += "<a href='/xpto'>link to another page</a>";
        return buildResponse(200, responseBody);
    }

    if (event.path=="/xpto") {
        responseBody = "<h1>Another Page</h1>";
        responseBody += "<a href='/'>home</a>";
        return buildResponse(200, responseBody);
    }

    if (event.path=="/my-s3-resource") {

        var params = { 
            Bucket: myBucket,
            Key: 'path/to/my-s3-resource.html',
        };

        const data = await s3.getObject(params).promise();

        return buildResponse(200, data.Body.toString('utf-8'));
    }

    return buildResponse(404, '404 Error');

};


function buildResponse(statusCode, responseBody) {

    var response = {
        "isBase64Encoded": false,
        "statusCode": statusCode,
        "headers": {
            "Content-Type" : "text/html; charset=utf-8"
        },
        "body": responseBody,
    };

    return response;
}

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