internal void DeleteExpiredBackups(BackupCleanerService backupCleanerService)
{
log.Debug("started to clean expired backups");
var backupsToRemove = BackupRepository.GetExpiredBackupRecords();
log.DebugFormat("found {0} backups which are expired", backupsToRemove.Count);
if (!backupCleanerService.IsStarted)
{
return;
}
foreach (var scheduledBackups in BackupRepository.GetScheduledBackupRecords().GroupBy(r => r.TenantId))
{
if (!backupCleanerService.IsStarted)
{
return;
}
var schedule = BackupRepository.GetBackupSchedule(scheduledBackups.Key);
if (schedule != null)
{
var scheduledBackupsToRemove = scheduledBackups.OrderByDescending(r => r.CreatedOn).Skip(schedule.BackupsStored).ToList();
if (scheduledBackupsToRemove.Any())
{
log.DebugFormat("only last {0} scheduled backup records are to keep for tenant {1} so {2} records must be removed", schedule.BackupsStored, schedule.TenantId, scheduledBackupsToRemove.Count);
backupsToRemove.AddRange(scheduledBackupsToRemove);
}
}
else
{
backupsToRemove.AddRange(scheduledBackups);
}
}
foreach (var backupRecord in backupsToRemove)
{
if (!backupCleanerService.IsStarted)
{
return;
}
try
{
var backupStorage = BackupStorageFactory.GetBackupStorage(backupRecord);
if (backupStorage == null)
{
continue;
}
backupStorage.Delete(backupRecord.StoragePath);
BackupRepository.DeleteBackupRecord(backupRecord.Id);
}
catch (Exception error)
{
log.Warn("can't remove backup record: {0}", error);
}
}
}