107 lines
3.6 KiB
C#
107 lines
3.6 KiB
C#
namespace ASC.Data.Backup.Services;
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[Singletone]
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internal sealed class BackupCleanerService : IHostedService, IDisposable
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{
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private Timer _timer;
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private readonly ILog _logger;
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private readonly TimeSpan _period;
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private readonly IServiceScopeFactory _scopeFactory;
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public BackupCleanerService(
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ConfigurationExtension configuration,
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IOptionsMonitor<ILog> options,
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IServiceScopeFactory scopeFactory)
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{
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_scopeFactory = scopeFactory;
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_logger = options.CurrentValue;
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_period = configuration.GetSetting<BackupSettings>("backup").Cleaner.Period;
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}
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public Task StartAsync(CancellationToken cancellationToken)
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{
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_logger.Info("starting backup cleaner service...");
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_timer = new Timer(DeleteExpiredBackups, null, TimeSpan.Zero, _period);
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_logger.Info("backup cleaner service started");
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return Task.CompletedTask;
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}
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public void DeleteExpiredBackups(object state)
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{
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using var serviceScope = _scopeFactory.CreateScope();
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var backupRepository = serviceScope.ServiceProvider.GetRequiredService<BackupRepository>();
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var backupStorageFactory = serviceScope.ServiceProvider.GetRequiredService<BackupStorageFactory>();
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_logger.Debug("started to clean expired backups");
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var backupsToRemove = backupRepository.GetExpiredBackupRecords();
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_logger.DebugFormat("found {0} backups which are expired", backupsToRemove.Count);
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foreach (var scheduledBackups in backupRepository.GetScheduledBackupRecords().GroupBy(r => r.TenantId))
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{
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var schedule = backupRepository.GetBackupSchedule(scheduledBackups.Key);
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if (schedule != null)
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{
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var scheduledBackupsToRemove = scheduledBackups.OrderByDescending(r => r.CreatedOn).Skip(schedule.BackupsStored).ToList();
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if (scheduledBackupsToRemove.Any())
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{
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_logger.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);
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backupsToRemove.AddRange(scheduledBackupsToRemove);
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}
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}
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else
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{
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backupsToRemove.AddRange(scheduledBackups);
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}
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}
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foreach (var backupRecord in backupsToRemove)
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{
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try
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{
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var backupStorage = backupStorageFactory.GetBackupStorage(backupRecord);
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if (backupStorage == null) continue;
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backupStorage.Delete(backupRecord.StoragePath);
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backupRepository.DeleteBackupRecord(backupRecord.Id);
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}
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catch (ProviderInfoArgumentException error)
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{
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_logger.Warn("can't remove backup record " + backupRecord.Id, error);
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if (DateTime.UtcNow > backupRecord.CreatedOn.AddMonths(6))
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{
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backupRepository.DeleteBackupRecord(backupRecord.Id);
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}
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}
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catch (Exception error)
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{
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_logger.Warn("can't remove backup record: " + backupRecord.Id, error);
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}
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}
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}
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public Task StopAsync(CancellationToken cancellationToken)
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{
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_logger.Info("stopping backup cleaner service...");
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_timer?.Change(Timeout.Infinite, 0);
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_logger.Info("backup cleaner service stopped");
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return Task.CompletedTask;
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}
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public void Dispose()
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{
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_timer?.Dispose();
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}
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}
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