EmptyFiles | A collection of minimal binary files | File Utils library

The title basically explains itself.

I have a REST endpoint with VertX. Upon hitting it, I have some logic which results in an AWS-S3 object.

My previous logic was not to upload to S3, but to save it locally. So, I can do this at the response routerCxt.response().sendFile(file_path...).

Now that the file is in S3, I have to download it locally before I could call the above code.

That is slow and inefficient. I would like to stream S3 object directly to the response object.

In Express, it's something like this. s3.getObject(params).createReadStream().pipe(res);.

I read a little bit, and saw that VertX has a class called Pump. But it is used by vertx.fileSystem() in the examples.

I am not sure how to plug the InputStream from S3'sgetObjectContent() to the vertx.fileSystem() to use Pump.

I am not even sure Pump is the correct way because I tried to use Pump to return a local file, and it didn't work.