public async Task RemoveOldBackupsAsync(int maximumAllowedBackups)
{
try
{
int localBackupCount = _fileSystemHelper.CountFilesInDirectory(backupPersistanceDirectory);
_logger.Info("Found {0} backups in the local data directory", localBackupCount);
if (localBackupCount > maximumAllowedBackups)
{
int numberOfBackupsToRemove = localBackupCount - maximumAllowedBackups;
_logger.Info("{0} backups need to be removed from the local data directory", numberOfBackupsToRemove);
for (int i = 0; i < numberOfBackupsToRemove; i++)
{
FileSystemInfo oldFileToRemove = _fileSystemHelper.GetOldestFile(backupPersistanceDirectory);
_logger.Info("Attempting to remove backup file {0} ...", oldFileToRemove.Name);
_fileSystemHelper.RemoveFile(oldFileToRemove.FullName);
_logger.Info("backup file {0} removed succesfully!", oldFileToRemove.Name);
}
}
else
{
_logger.Info("{0} backups on in the local data directory does not exceed the maximum allowed number of backups {1}, no backups were removed...", localBackupCount, maximumAllowedBackups);
}
}
catch (Exception e)
{
_logger.Warn("Failed to remove old backups from the local data directory: {0}", e.Message.ToString());
throw e;
}
}
