{

class UploaderWorker

{

private static short NUM_RETRIES = 3;

private GlacierAPIInterface api;

private TransferMetric metric;

private byte[] data;

private string checksum;

private long start;

private long end;

private string uploadId;

private long lastBytesCount;

public UploaderWorker(ref GlacierAPIInterface api, ref TransferMetric metric, ref byte[] data, string checksum, long start, long end, string uploadId)

{

this.api = api;

this.metric = metric;

this.start = start;

this.end = end;

this.uploadId = uploadId;

this.lastBytesCount = 0;

this.data = data;

this.checksum = checksum;

}

private void OnTransferProgress(Object sender, EventArgs e)

{

try

{

string tmp = e.ToString();

System.Text.RegularExpressions.Match match = System.Text.RegularExpressions.Regex.Match(tmp, "Bytes transferred: ([0-9]+)");

int numBytes = int.Parse(match.Groups[1].Value);

// Add the delta to the total then save the new byte count

metric.incrementTransferredBytes(numBytes - lastBytesCount);

lastBytesCount = numBytes;

}

catch (Exception ex)

{

Console.WriteLine("Exception: " + ex.Message);

}

}

public void Run()

{

short retries = 0;

while (retries++ < NUM_RETRIES)

{

try

{

GlacierFilePart part = new GlacierFilePart(ref data, checksum, start, end, uploadId);

api.UploadPart(part, OnTransferProgress);

metric.incrementTransferredParts();

return;

}

catch (Exception ex)

{

// Remove what we've uploaded so far from the metrics just to be precise.

metric.removeTransferredBytes(lastBytesCount);

// Reset the last byte count to zero or we're going to mess things up later.

lastBytesCount = 0;

Console.WriteLine("Upload exception: " + ex.Message);

}

}

}

}

}