Example usage for com.amazonaws.event ProgressEvent ProgressEvent

Introduction

In this page you can find the example usage for com.amazonaws.event ProgressEvent ProgressEvent.

Prototype

public ProgressEvent(ProgressEventType eventType) 

Source Link

Document

Creates a ProgressEvent object with the specified event type.

Usage

From source file:com.github.rholder.esthree.command.Get.java

License:Apache License

@Override
public Integer call() throws Exception {

    // this is the most up to date digest, it's initialized here but later holds the most up to date valid digest
    currentDigest = MessageDigest.getInstance("MD5");
    currentDigest = retryingGet();//from w  w  w  .j av  a 2s.com

    if (progressListener != null) {
        progressListener.progressChanged(new ProgressEvent(ProgressEventType.TRANSFER_STARTED_EVENT));
    }

    if (!fullETag.contains("-")) {
        byte[] expected = BinaryUtils.fromHex(fullETag);
        byte[] current = currentDigest.digest();
        if (!Arrays.equals(expected, current)) {
            throw new AmazonClientException("Unable to verify integrity of data download.  "
                    + "Client calculated content hash didn't match hash calculated by Amazon S3.  "
                    + "The data may be corrupt.");
        }
    } else {
        // TODO log warning that we can't validate the MD5
        if (verbose) {
            System.err.println("\nMD5 does not exist on AWS for file, calculated value: "
                    + BinaryUtils.toHex(currentDigest.digest()));
        }
    }
    // TODO add ability to resume from previously downloaded chunks
    // TODO add rate limiter

    return 0;

}

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From source file:com.github.rholder.esthree.command.GetMultipart.java

License:Apache License

@Override
public Integer call() throws Exception {
    ObjectMetadata om = amazonS3Client.getObjectMetadata(bucket, key);
    contentLength = om.getContentLength();

    // this is the most up to date digest, it's initialized here but later holds the most up to date valid digest
    currentDigest = MessageDigest.getInstance("MD5");
    chunkSize = chunkSize == null ? DEFAULT_CHUNK_SIZE : chunkSize;
    fileParts = Parts.among(contentLength, chunkSize);
    for (Part fp : fileParts) {

        /*//from   w  w w. j av a  2 s .c o m
         * We'll need to compute the digest on the full incoming stream for
         * each valid chunk that comes in. Invalid chunks will need to be
         * recomputed and fed through a copy of the MD5 that was valid up
         * until the latest chunk.
         */
        currentDigest = retryingGetWithRange(fp.start, fp.end);
    }

    // TODO fix total content length progress bar
    if (progressListener != null) {
        progressListener.progressChanged(new ProgressEvent(ProgressEventType.TRANSFER_STARTED_EVENT));
    }

    String fullETag = om.getETag();
    if (!fullETag.contains("-")) {
        byte[] expected = BinaryUtils.fromHex(fullETag);
        byte[] current = currentDigest.digest();
        if (!Arrays.equals(expected, current)) {
            throw new AmazonClientException("Unable to verify integrity of data download.  "
                    + "Client calculated content hash didn't match hash calculated by Amazon S3.  "
                    + "The data may be corrupt.");
        }
    } else {
        // TODO log warning that we can't validate the MD5
        if (verbose) {
            System.err.println("\nMD5 does not exist on AWS for file, calculated value: "
                    + BinaryUtils.toHex(currentDigest.digest()));
        }
    }
    // TODO add ability to resume from previously downloaded chunks
    // TODO add rate limiter

    return 0;
}

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