Feature: uploads file the s3 api.

[borissmidt]

I've had a look at how to upload a file with the S3 client and it seems the minimum chunk-size is 5MB.
It might be useful for the user to have a utility method to automatically select the right upload type.
It however will need to have an added dependency to https://github.com/monix/monix-nio.

  def upload(key: String, file: Path) = {
    if (Files.size(file) < awsMinChunkSize) {
      s3.upload(bucket, key, Files.readAllBytes(file))
    } else {
      monix.nio.file
        .readAsync(file, awsMinChunkSize)(global)
        .consumeWith(s3.uploadMultipart(bucket, key))
    }
  }

[paualarco]

Sounds like a useful method to implement!

We already have implemented something similar to upload objects from files to the google cloud storage , which does not depends on monix-nio, so probably we could do it like that too.