Example usage for com.amazonaws.util VersionInfoUtils getVersion

Introduction

In this page you can find the example usage for com.amazonaws.util VersionInfoUtils getVersion.

Prototype

public static String getVersion() 

Source Link

Document

Returns the current version for the AWS SDK in which this class is running.

Usage

From source file:com.example.jinux.mydemo.s3.Uploader.java

License:Apache License

/**
 * Initiate a multipart file upload to Amazon S3
 * /*from  w ww. jav  a  2s .  c  o m*/
 * @return the URL of a successfully uploaded file
 */
public String start() {

    // initialize
    List<PartETag> partETags = new ArrayList<PartETag>();
    final long contentLength = file.length();
    long filePosition = 0;
    int startPartNumber = 1;

    userInterrupted = false;
    userAborted = false;
    bytesUploaded = 0;

    // check if we can resume an incomplete download
    String uploadId = getCachedUploadId();
    Utils.log("start uploading");
    if (uploadId != null) {
        // we can resume the download
        Log.i(TAG, "resuming upload for " + uploadId);

        // get the cached etags
        List<PartETag> cachedEtags = getCachedPartEtags();
        partETags.addAll(cachedEtags);

        // calculate the start position for resume
        startPartNumber = cachedEtags.size() + 1;
        filePosition = (startPartNumber - 1) * partSize;
        bytesUploaded = filePosition;

        Log.i(TAG, "resuming at part " + startPartNumber + " position " + filePosition);

    } else {
        // initiate a new multi part upload
        Log.i(TAG, "initiating new upload");

        Utils.log("the bucket = " + s3bucketName);
        InitiateMultipartUploadRequest initRequest = new InitiateMultipartUploadRequest(s3bucketName, s3key);
        configureInitiateRequest(initRequest);
        initRequest.getRequestClientOptions()
                .appendUserAgent("TransferService_multipart/" + VersionInfoUtils.getVersion());
        InitiateMultipartUploadResult initResponse = s3Client.initiateMultipartUpload(initRequest);
        uploadId = initResponse.getUploadId();

    }

    final AbortMultipartUploadRequest abortRequest = new AbortMultipartUploadRequest(s3bucketName, s3key,
            uploadId);

    for (int k = startPartNumber; filePosition < contentLength; k++) {

        long thisPartSize = Math.min(partSize, (contentLength - filePosition));

        Log.i(TAG, "starting file part " + k + " with size " + thisPartSize);

        UploadPartRequest uploadRequest = new UploadPartRequest().withBucketName(s3bucketName).withKey(s3key)
                .withUploadId(uploadId).withPartNumber(k).withFileOffset(filePosition).withFile(file)
                .withPartSize(thisPartSize);

        ProgressListener s3progressListener = new ProgressListener() {
            public void progressChanged(ProgressEvent progressEvent) {

                // bail out if user cancelled
                // TODO calling shutdown too brute force?
                if (userInterrupted) {
                    s3Client.shutdown();
                    throw new UploadIterruptedException("User interrupted");
                } else if (userAborted) {
                    // aborted requests cannot be resumed, so clear any cached etags
                    clearProgressCache();
                    s3Client.abortMultipartUpload(abortRequest);
                    s3Client.shutdown();
                }

                bytesUploaded += progressEvent.getBytesTransfered();

                //Log.d(TAG, "bytesUploaded=" + bytesUploaded);

                // broadcast progress
                float fpercent = ((bytesUploaded * 100) / contentLength);
                int percent = Math.round(fpercent);
                if (progressListener != null) {
                    progressListener.progressChanged(progressEvent, bytesUploaded, percent);
                }

            }
        };

        uploadRequest.setProgressListener(s3progressListener);

        UploadPartResult result = s3Client.uploadPart(uploadRequest);

        partETags.add(result.getPartETag());

        // cache the part progress for this upload
        if (k == 1) {
            initProgressCache(uploadId);
        }
        // store part etag
        cachePartEtag(result);

        filePosition += thisPartSize;
    }

    CompleteMultipartUploadRequest compRequest = new CompleteMultipartUploadRequest(s3bucketName, s3key,
            uploadId, partETags);

    CompleteMultipartUploadResult result = s3Client.completeMultipartUpload(compRequest);
    bytesUploaded = 0;

    Log.i(TAG, "upload complete for " + uploadId);

    clearProgressCache();

    return result.getLocation();

}

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