Release: AWS SDK for Java 1.1.0

In addition to a new high-level TransferManager class, which abstracts out the logic for multipart uploads, the AWS SDK for Java includes six new operations for working with the new Amazon S3 multipart upload API:

• InitiateMultipartUpload
• UploadPart
• CompleteMultipartUpload
• AbortMultipartUpload
• ListMultipartUploads
• ListParts

TransferManager will automatically switch over to use multipart uploads past a configurable size threshold. When uploading files, TransferManager will automatically upload multiple parts of the file in parallel for better throughput.

Over time, TransferManager will be extended with additional high level functionality for both uploads and downloads.

The AmazonS3TransferProgress sample included in the AWS SDK for Java demonstrates how to use TransferManager and how to track progress for uploads.

Using TransferManager to upload data to Amazon S3 is easy:

AWSCredentials myCredentials = new BasicAWSCredentials(...);
TransferManager tm = new TransferManager(myCredentials);
Transfer myUpload = tm.upload(myBucket, myFile.getName(), myFile);
 
// You can keep doing work while the transfer uploads in the background 
while (myUpload.isDone() == false) {
    System.out.println("Transfer: " + myUpload.getDescription());
    System.out.println("  - Status: " + myUpload.getStatus());
    System.out.println("  - Progress: " + myUpload.getProgress().getBytesTransfered());
    // Do work while we wait for our upload to complete...
    Thread.sleep(500);     
}
  
// Or you can simply wait for the transfer to finish 
// if you don't need to do more work 
myUpload.waitForCompletion();
  

• Fixed a race condition when loading MIME types as part of the AmazonS3Client construction.
• Added a warning when the SDK is running on a few JVM patch versions that have caused XML parsing problems for some customers.
• Added the filters member to the DescribeVpnConnectionRequest class.