private async Task DoTransfer(Transfer transfer, TransferScheduler scheduler, CancellationToken cancellationToken)
{
using (transfer)
{
bool hasError = false;
Interlocked.Increment(ref this.outstandingTasks);
try
{
await transfer.ExecuteAsync(scheduler, cancellationToken);
}
catch
{
// catch exception thrown from sub-transfer as it's already recorded
hasError = true;
}
finally
{
if (!hasError)
{
this.subTransfers.RemoveTransfer(transfer);
}
if (Interlocked.Decrement(ref this.outstandingTasks) == 0)
{
// all transfers are done
this.allTransfersCompleteSource.SetResult(null);
}
this.enumerationResetEvent.Set();
}
}
}
private async void DoTransfer(Transfer transfer, TransferScheduler scheduler, CancellationToken cancellationToken)
{
using (transfer)
{
bool hasError = false;
Interlocked.Increment(ref this.outstandingTasks);
try
{
await transfer.ExecuteAsync(scheduler, cancellationToken).ConfigureAwait(false);
}
catch
{
// catch exception thrown from sub-transfer as it's already recorded
hasError = true;
}
finally
{
// Don't keep the failed transferring in memory, if the checkpoint is persist to a streamed journal,
// instead, should only keep them in the streamed journal.
if ((!hasError) ||
(null != this.Journal))
{
this.subTransfers.RemoveTransfer(transfer);
}
this.enumerationResetEvent.Set();
if (Interlocked.Decrement(ref this.outstandingTasks) == 0)
{
// all transfers are done
this.allTransfersCompleteSource.SetResult(null);
}
}
}
}
private async Task DoTransfer(Transfer transfer, TransferScheduler scheduler, CancellationToken cancellationToken)
{
using (transfer)
{
bool hasError = false;
Interlocked.Increment(ref this.outstandingTasks);
try
{
await transfer.ExecuteAsync(scheduler, cancellationToken);
}
catch
{
// catch exception thrown from sub-transfer as it's already recorded
hasError = true;
}
finally
{
if (!hasError)
{
this.subTransfers.RemoveTransfer(transfer);
}
if (Interlocked.Decrement(ref this.outstandingTasks) == 0)
{
// all transfers are done
this.allTransfersCompleteSource.SetResult(null);
}
this.enumerationResetEvent.Set();
}
}
}
private static async Task DoTransfer(Transfer transfer, CancellationToken cancellationToken)
{
if (!TryAddTransfer(transfer))
{
throw new TransferException(TransferErrorCode.TransferAlreadyExists, Resources.TransferAlreadyExists);
}
try
{
await transfer.ExecuteAsync(scheduler, cancellationToken);
}
finally
{
RemoveTransfer(transfer);
}
}
private static async Task DoTransfer(Transfer transfer, TransferContext transferContext, CancellationToken cancellationToken)
{
using (transfer)
{
if (!TryAddTransfer(transfer))
{
throw new TransferException(TransferErrorCode.TransferAlreadyExists, Resources.TransferAlreadyExists);
}
if (transferContext != null)
{
if (transfer.Context == null)
{
// associate transfer with transfer context
transfer.Context = transferContext;
}
}
try
{
await transfer.ExecuteAsync(scheduler, cancellationToken);
}
finally
{
RemoveTransfer(transfer);
}
}
}