private async Task <SynchronizationReport> PerformSynchronizationAsync(IAsyncFilesSynchronizationCommands destination,
SynchronizationWorkItem work)
{
var commands = (IAsyncFilesCommandsImpl)destination.Commands;
string destinationUrl = commands.UrlFor();
Log.Debug("Starting to perform {0} for a file '{1}' and a destination server {2}",
work.GetType().Name, work.FileName, destinationUrl);
if (!CanSynchronizeTo(destinationUrl))
{
Log.Debug("The limit of active synchronizations to {0} server has been achieved. Cannot process a file '{1}'.",
destinationUrl, work.FileName);
if (synchronizationQueue.EnqueueSynchronization(destinationUrl, work))
{
publisher.Publish(new SynchronizationUpdateNotification
{
FileName = work.FileName,
DestinationFileSystemUrl = destinationUrl,
SourceServerId = storage.Id,
SourceFileSystemUrl = FileSystemUrl,
Type = work.SynchronizationType,
Action = SynchronizationAction.Enqueue,
SynchronizationDirection = SynchronizationDirection.Outgoing
});
}
return(new SynchronizationReport(work.FileName, work.FileETag, work.SynchronizationType)
{
Exception = new SynchronizationException(string.Format(
"The limit of active synchronizations to {0} server has been achieved. Cannot process a file '{1}'.",
destinationUrl, work.FileName))
});
}
string fileName = work.FileName;
synchronizationQueue.SynchronizationStarted(work, destinationUrl);
publisher.Publish(new SynchronizationUpdateNotification
{
FileName = work.FileName,
DestinationFileSystemUrl = destinationUrl,
SourceServerId = storage.Id,
SourceFileSystemUrl = FileSystemUrl,
Type = work.SynchronizationType,
Action = SynchronizationAction.Start,
SynchronizationDirection = SynchronizationDirection.Outgoing
});
SynchronizationReport report;
try
{
report = await work.PerformAsync(destination);
}
catch (Exception ex)
{
report = new SynchronizationReport(work.FileName, work.FileETag, work.SynchronizationType)
{
Exception = ex,
};
}
var synchronizationCancelled = false;
if (report.Exception == null)
{
var moreDetails = string.Empty;
if (work.SynchronizationType == SynchronizationType.ContentUpdate)
{
moreDetails = string.Format(". {0} bytes were transfered and {1} bytes copied. Need list length was {2}",
report.BytesTransfered, report.BytesCopied, report.NeedListLength);
}
UpdateSuccessfulSynchronizationTime();
Log.Debug("{0} to {1} has finished successfully{2}", work.ToString(), destinationUrl, moreDetails);
}
else
{
if (work.IsCancelled || report.Exception is TaskCanceledException)
{
synchronizationCancelled = true;
Log.DebugException(string.Format("{0} to {1} was cancelled", work, destinationUrl), report.Exception);
}
else
{
Log.WarnException(string.Format("{0} to {1} has finished with the exception", work, destinationUrl),
report.Exception);
}
}
Queue.SynchronizationFinished(work, destinationUrl);
if (!synchronizationCancelled)
{
CreateSyncingConfiguration(fileName, work.FileETag, destinationUrl, work.SynchronizationType);
}
publisher.Publish(new SynchronizationUpdateNotification
{
FileName = work.FileName,
DestinationFileSystemUrl = destinationUrl,
SourceServerId = storage.Id,
SourceFileSystemUrl = FileSystemUrl,
Type = work.SynchronizationType,
Action = SynchronizationAction.Finish,
SynchronizationDirection = SynchronizationDirection.Outgoing
});
return(report);
}
