如何将图像文件从 s3 存储桶上传到 cloudinary (nodejs)

Question

我将图像文件保存在 s3 存储桶中。 我想使用 Cloudinary 更新图像。 将图像从 S3 取出并放入 Cloudinary 的最佳方法是什么？

我可以使用 nodeJS 中的 aws-sdk 获得可读流：

// Create service client module using ES6 syntax.
import { S3Client, GetObjectCommand } from "@aws-sdk/client-s3";
// Set the AWS Region.
const REGION = "eu-west-2";
// Create an Amazon S3 service client object.
const s3Client = new S3Client({ region: REGION });

// Set the parameters.
export const bucketParams = {
  Bucket: "mybucketname",
};

// Get an object from S3 bucket
export async function getS3Object(inputParams: { Key: string }) {
  try {
    const data = await s3Client.send(
      new GetObjectCommand({
        ...bucketParams,
        Key: `public/dalle/${inputParams.Key}`,
      })
    );

    return data; // data.Body is a readable stream
  } catch (err) {
    console.log("Error", err);
  }
}

上传到 cloudinary 可以通过传递图像 url 来完成：

import { v2 } from "cloudinary";
const cloudinary = v2;

// Return "https" URLs by setting secure: true
cloudinary.config({
  secure: true,
  cloud_name: myCloudName,
  api_key: myApiKey,
  api_secret: myApiSecret,
});

export async function uploadImage(fileLocation: string){
  const newUploadUrl = await cloudinary.uploader.upload(fileLocation, {});
  console.log({
    newUploadUrl,
  });
}

Cloudinary 有没有办法接受可读流进行上传？ 或者，有没有办法从 S3 获取公共图像 URL？ （或者是否有更好的方法来完全做到这一点？）

Answer 1

我们可以创建一个临时 URL 发送到 cloudinary，而不是从 S3 下载图像：

// Create service client module using ES6 syntax.
import { S3Client, GetObjectCommand } from "@aws-sdk/client-s3";
import { getSignedUrl } from "@aws-sdk/s3-request-presigner";

// Set the AWS Region.
const REGION = "eu-west-2";
// Create an Amazon S3 service client object.
const s3Client = new S3Client({ region: REGION });

// Set the parameters.
export const bucketParams = {
  Bucket: myBucketName,
};

export async function getTempSignedUrl(inputParams: { Key: string }) {
  try {
    const command = new GetObjectCommand({
      ...bucketParams,
      Key: inputParams.Key,
    });
    const data = await getSignedUrl(s3Client, command, {});
    console.log({
      data,
    });
    return data; // Can be passed to cloudinary as per the upload function in the question
  } catch (err) {
    console.log("Error", err);
  }
}

来源https://docs.aws.amazon.com/sdk-for-javascript/v3/developer-guide/s3-example-creating-buckets.html#s3-create-presigendurl

Answer 2

请确保可以公开访问 S3 URL 或为我们的 AWS 用户分配读取权限。 有关更多信息：http: //support.cloudinary.com/hc/en-us/articles/203276521-How-do-I-allow-Cloudinary-to-read-from-my-private-S3-bucket-