Need Signed URL without Async await like we have in V2

[nikhilmisra63]

Describe the feature

Need to generate S3 Signed URL without async await as after updating to v3 it is breaking my code.

Use Case

Need this feature because in mongo db serialization I'm generating signed url before sending response to frontend and there in toJSON method we can not call a method using await.

schema.methods.toJSON = async function () {
  const story = this.toObject();
  story.contentUrl = story.content
    ? await generateSignedUrl(story.content)
    : undefined;
  return story;
};

this is what I was doing in v2 and it is not working after v3 update.

Proposed Solution

support v2 method of generating signed url

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

SDK version used

v3

Environment details (OS name and version, etc.)

Mac, ubuntu

[aBurmeseDev]

HI @nikhilmisra63 - thanks for reaching out.

Here's code example of v3 to generate pre-signed URL without using async/await:

const { S3Client, GetObjectCommand } = require("@aws-sdk/client-s3");
const { getSignedUrl } = require("@aws-sdk/s3-request-presigner");

// Create an S3 client
const s3Client = new S3Client({ region: "your-aws-region" });

// Function to generate a pre-signed URL
function generateSignedUrl(key) {
  const command = new GetObjectCommand({
    Bucket: "your-bucket-name",
    Key: key,
  });

  // Generate the pre-signed URL
  return getSignedUrl(s3Client, command, { expiresIn: 3600 });
}

// Usage example
const objectKey = "path/to/your/object.jpg";
const signedUrl = generateSignedUrl(objectKey);
console.log(signedUrl);

Since the getSignedUrl function returns a Promise, you can directly assign the result to a variable without using async/await.

schema.methods.toJSON = function () {
  const story = this.toObject();
  story.contentUrl = story.content
    ? generateSignedUrl(story.content)
    : undefined;
  return story;
};

Hope it helps!
Best,
John