程序包 com.sinacloud.scs.services.scs.transfer

Transfer management.

请参阅: 说明

接口概要

接口	说明
Download	Represents an asynchronous download from Amazon S3.
MultipleFileDownload	Multiple file download of an entire virtual directory.
MultipleFileUpload	Multiple file download of an entire virtual directory.
ObjectMetadataProvider	This is the callback interface which is used by TransferManager.uploadDirectory and TransferManager.uploadFileList.
Transfer	Represents an asynchronous upload to or download from Amazon S3.
Upload	Represents an asynchronous upload to Amazon S3.

类概要

类	说明
TransferManager	High level utility for managing transfers to Amazon S3.
TransferManagerConfiguration	Configuration options for how TransferManager processes requests.
TransferProgress	Describes the progress of a transfer.

枚举概要

枚举	说明
Transfer.TransferState	Enumeration of the possible transfer states.

程序包com.sinacloud.scs.services.scs.transfer的说明

Transfer management.

This package provides the com.sina.scs.transfer.TransferManager class, which manages a queue of asynchronous transfers. Callers can create a TransferManager instance, sharing that same instance throughout their application, queue new uploads for TransferManager to process, and continue working while TransferManager tracks the asynchronous upload progress.

The main benefits of using TransferManager are:

• Simplified API for working with, querying, and manipulating transfers.
• Consistent interface for submitting uploads that abstracts the single part and multipart upload logic.
• Increased throughput when multiple parts of an upload can be uploaded to Amazon S3 in parallel.

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 tx = new TransferManager(myCredentials);
 Upload myUpload = tx.upload(myBucket, myFile.getName(), myFile);

 // You can poll your transfer's status to check its progress
 if (myUpload.isDone() == false) {
     System.out.println("Transfer: " + myUpload.getDescription());
     System.out.println("  - State: " + myUpload.getState());
     System.out.println("  - Progress: " + myUpload.getProgress().getBytesTransferred());
 }

 // Transfers also allow you to set a ProgressListener to receive
 // asynchronous notifications about your transfer's progress.
 myUpload.addProgressListener(myProgressListener);

 // Or you can block the current thread and wait for your transfer to
 // to complete.  If the transfer fails, this method will throw an
 // AmazonClientException or AmazonServiceException detailing the reason.
 myUpload.waitForCompletion();
 

另请参阅:

com.sina.scs.transfer.TransferManager