将AWS API Gateway重定向到S3 Binary [英] Redirecting AWS API Gateway to S3 Binary

问题描述

我正在尝试通过API网关URL从S3下载大型二进制文件.由于API网关中的最大下载大小受到限制，我想我可以提供Amazon S3的基本URL(在swagger文件中)并将文件夹/项目添加到我要下载的二进制文件中.

I'm trying to download large binaries from S3 via an API Gateway URL. Because the maximum download size in API Gateway is limited I thought I just could provide the basic URL to Amazon S3 (in the swagger file) and add the folder/item to the binary I want to download.

但是我发现的只是通过Lambda函数重定向API网关，但是我不想要那样.

But all I find is redirection API Gateway via a Lambda function, but I don't want that.

我想要一个已经配置了重定向的大文件.

I want a swagger file where the redirect is already configured.

因此，如果我拨打<api_url>/folder/item，我想重定向到s3-url/folder/item

So if I call <api_url>/folder/item I want to be redirected to s3-url/folder/item

这可能吗?如果可以，怎么办?

Is this possible? And if so, how?

示例:

• S3: https://s3.eu-central-1.amazonaws.com/folder/item(项目=大的二进制文件)
• API网关: https://<id>.execute-api.eu-central-1.amazonaws.com/stage/folder/item->重定向到s3网址

• S3: https://s3.eu-central-1.amazonaws.com/folder/item (item = large binary file)
• API Gateway: https://<id>.execute-api.eu-central-1.amazonaws.com/stage/folder/item -> redirect to s3 url

推荐答案

我不确定您是否可以通过API网关将请求重定向到预先签名的S3 url，而无需后端来计算预先签名的S3 url. SDK提供了预先签名的S3 url功能，而不是API.您需要使用Lambda函数来计算预设的S3网址并返回.

I am not sure if you can redirect the request to a presigned S3 url via API Gateway without a backend to calculate the presigned S3 url. The presigned S3 url feature is provided by the SDK instead of an API. You need to use a Lambda function to calculate the presigned S3 url and return.

var AWS = require('aws-sdk');
AWS.config.region = "us-east-1";
var s3 = new AWS.S3({signatureVersion: 'v4'});
var BUCKET_NAME = 'my-bucket-name'

exports.handler = (event, context, callback) => {

    var params = {Bucket: BUCKET_NAME, Key: event.path};
    s3.getSignedUrl('putObject', params, function (err, url) {
        console.log('The URL is', url);
        callback(null, url);
    });

};

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