private PathScanResults <string> DoWork(Models.Backup backup, CancellationToken cancellationToken)
{
PathScanResults <string> results = new PathScanResults <string>();
BackupedFileRepository daoBackupedFile = new BackupedFileRepository();
// Load pending `BackupedFiles` from `Backup`.
IList <Models.BackupedFile> pendingFiles = daoBackupedFile.GetByBackupAndStatus(backup,
// 1. We don't want to resume a file that FAILED.
// 2. We don't want to resume a file that was CANCELED.
// Theoretically, a CANCELED file should never be present in a backup that is still RUNNING,
// unless the backup was being CANCELED, and the PlanExecutor was terminated by some reason
// after it updated the files as CANCELED but before it got the chance to update the backup
// itself as CANCELED.
TransferStatus.STOPPED, // The transfer didn't begin.
TransferStatus.RUNNING // The transfer did begin but did not complete.
);
cancellationToken.ThrowIfCancellationRequested();
// Convert them to a list of paths.
results.Files = pendingFiles.ToLinkedList <string, Models.BackupedFile>(p => p.File.Path);
return(results);
}