Example usage for com.amazonaws.event ProgressEventType RESPONSE_BYTE_TRANSFER_EVENT

Introduction

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

Prototype

ProgressEventType RESPONSE_BYTE_TRANSFER_EVENT

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Document

Used to indicate the number of bytes received from AWS.

Usage

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

License:Apache License

public MessageDigest copyAndHash(InputStream input, long totalBytes, Progress progress)
        throws IOException, CloneNotSupportedException {

    // clone the current digest, such that it remains unchanged in this method
    MessageDigest computedDigest = (MessageDigest) currentDigest.clone();
    byte[] buffer = new byte[DEFAULT_BUF_SIZE];

    long count = 0;
    int n;//from   ww  w . jav  a  2 s.c o m
    while (-1 != (n = input.read(buffer))) {
        output.write(buffer, 0, n);
        if (progressListener != null) {
            progress.updateProgress(n);
            progressListener
                    .progressChanged(new ProgressEvent(ProgressEventType.RESPONSE_BYTE_TRANSFER_EVENT, n));
        }
        computedDigest.update(buffer, 0, n);
        count += n;
    }

    // verify that at least this many bytes were read
    if (totalBytes != count) {
        throw new IOException(
                String.format("%d bytes downloaded instead of expected %d bytes", count, totalBytes));
    }
    return computedDigest;
}

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