/// <summary>
/// Uploads the buffer.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <param name="bytesToCopy">The bytes to copy.</param>
/// <param name="targetStreamOffset">The target stream offset.</param>
/// <returns></returns>
private long UploadBuffer(byte[] buffer, int bytesToCopy, long targetStreamOffset)
{
//append it to the remote stream
int attemptCount = 0;
bool uploadCompleted = false;
while (!uploadCompleted && attemptCount < MaxBufferUploadAttemptCount)
{
_token.ThrowIfCancellationRequested();
attemptCount++;
try
{
if (targetStreamOffset == 0)
{
_frontEnd.CreateStream(_segmentMetadata.Path, true, buffer, bytesToCopy);
}
else
{
_frontEnd.AppendToStream(_segmentMetadata.Path, buffer, targetStreamOffset, bytesToCopy);
}
uploadCompleted = true;
targetStreamOffset += bytesToCopy;
ReportProgress(targetStreamOffset, false);
}
catch
{
//if we tried more than the number of times we were allowed to, give up and throw the exception
if (attemptCount >= MaxBufferUploadAttemptCount)
{
ReportProgress(targetStreamOffset, true);
throw;
}
else
{
WaitForRetry(attemptCount, this.UseBackOffRetryStrategy, _token);
}
}
}
return(targetStreamOffset);
}
/// <summary>
/// Uploads the buffer.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <param name="bytesToCopy">The bytes to copy.</param>
/// <param name="targetStreamOffset">The target stream offset.</param>
/// <returns></returns>
private long UploadBuffer(byte[] buffer, int bytesToCopy, long targetStreamOffset)
{
//append it to the remote stream
int attemptCount = 0;
bool uploadCompleted = false;
while (!uploadCompleted && attemptCount < MaxBufferUploadAttemptCount)
{
_token.ThrowIfCancellationRequested();
attemptCount++;
try
{
if (targetStreamOffset == 0)
{
_frontEnd.CreateStream(_segmentMetadata.Path, true, buffer, bytesToCopy);
}
else
{
_frontEnd.AppendToStream(_segmentMetadata.Path, buffer, targetStreamOffset, bytesToCopy);
}
uploadCompleted = true;
targetStreamOffset += bytesToCopy;
ReportProgress(targetStreamOffset, false);
}
catch (AggregateException e)
{
if (e.InnerExceptions.Count == 1 && e.InnerException is AdlsErrorException)
{
if (((AdlsErrorException)e.InnerException).Body.RemoteException is AdlsBadOffsetException)
{
// this means we tried to re-upload at the same location and the upload actually succeeded, which means we should move on.
uploadCompleted = true;
targetStreamOffset += bytesToCopy;
ReportProgress(targetStreamOffset, false);
}
else
{
//if we tried more than the number of times we were allowed to, give up and throw the exception
if (attemptCount >= MaxBufferUploadAttemptCount)
{
ReportProgress(targetStreamOffset, true);
throw e;
}
else
{
WaitForRetry(attemptCount, this.UseBackOffRetryStrategy, _token);
}
}
}
else
{
//if we tried more than the number of times we were allowed to, give up and throw the exception
if (attemptCount >= MaxBufferUploadAttemptCount)
{
ReportProgress(targetStreamOffset, true);
throw e;
}
else
{
WaitForRetry(attemptCount, this.UseBackOffRetryStrategy, _token);
}
}
}
catch (AdlsErrorException e)
{
if (e.Body.RemoteException is AdlsBadOffsetException)
{
// this means we tried to re-upload at the same location and the upload actually succeeded, which means we should move on.
uploadCompleted = true;
targetStreamOffset += bytesToCopy;
ReportProgress(targetStreamOffset, false);
}
else
{
//if we tried more than the number of times we were allowed to, give up and throw the exception
if (attemptCount >= MaxBufferUploadAttemptCount)
{
ReportProgress(targetStreamOffset, true);
throw e;
}
else
{
WaitForRetry(attemptCount, this.UseBackOffRetryStrategy, _token);
}
}
}
catch (Exception ex)
{
//if we tried more than the number of times we were allowed to, give up and throw the exception
if (attemptCount >= MaxBufferUploadAttemptCount)
{
ReportProgress(targetStreamOffset, true);
throw ex;
}
else
{
WaitForRetry(attemptCount, this.UseBackOffRetryStrategy, _token);
}
}
}
return(targetStreamOffset);
}