aws-upload-sample

Demonstrates usage of AWS SDK's TransferManager for handling S3 uploads.

Notes:

the thread-pool given to S3Uploader must be configured for blocking I/O because the TransferManager blocks the used threads on uploading chunks, preventing progress in processing the thread-pool's queue
getting the result in case of errors is problematic, as I found no way to do it without blocking for it and request.waitForUploadResult does happen to block the thread, even though you may receive a transfer complete event, but given that TransferManager is blocking those threads anyway, I see no harm in that

Configuration

Configuration lives in application.conf and must be configured with access keys:

aws.s3 {
  accessKey = "xxxxx"
  secretAccessKey = "xxxxxxxxxxxxxx"
  bucketName = "someBucket"
  region = "eu-west-1"
}