DocSpace-buildtools/common/ASC.Data.Backup.Core/Service/BackupService.cs

/*
 *
 * (c) Copyright Ascensio System Limited 2010-2020
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
 * Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
 *
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*/

namespace ASC.Data.Backup.Services
{
    [Scope]
    public class BackupService : IBackupService
    {
        private readonly ILog _logger;
        private readonly BackupStorageFactory _backupStorageFactory;
        private readonly BackupWorker _backupWorker;
        private readonly BackupRepository _backupRepository;
        private readonly ConfigurationExtension _configuration;

        public BackupService(
            IOptionsMonitor<ILog> options,
            BackupStorageFactory backupStorageFactory,
            BackupWorker backupWorker,
            BackupRepository backupRepository,
            ConfigurationExtension configuration)
        {
            _logger = options.CurrentValue;
            _backupStorageFactory = backupStorageFactory;
            _backupWorker = backupWorker;
            _backupRepository = backupRepository;
            _configuration = configuration;
        }

        public void StartBackup(StartBackupRequest request)
        {
            var progress = _backupWorker.StartBackup(request);
            if (!string.IsNullOrEmpty(progress.Error))
            {
                throw new FaultException();
            }
        }

        public void DeleteBackup(Guid id)
        {
            var backupRecord = _backupRepository.GetBackupRecord(id);
            _backupRepository.DeleteBackupRecord(backupRecord.Id);

            var storage = _backupStorageFactory.GetBackupStorage(backupRecord);
            if (storage == null)
            {
                return;
            }

            storage.Delete(backupRecord.StoragePath);
        }

        public void DeleteAllBackups(int tenantId)
        {
            foreach (var backupRecord in _backupRepository.GetBackupRecordsByTenantId(tenantId))
            {
                try
                {
                    _backupRepository.DeleteBackupRecord(backupRecord.Id);
                    var storage = _backupStorageFactory.GetBackupStorage(backupRecord);
                    if (storage == null)
                    {
                        continue;
                    }

                    storage.Delete(backupRecord.StoragePath);
                }
                catch (Exception error)
                {
                    _logger.Warn("error while removing backup record: {0}", error);
                }
            }
        }

        public List<BackupHistoryRecord> GetBackupHistory(int tenantId)
        {
            var backupHistory = new List<BackupHistoryRecord>();
            foreach (var record in _backupRepository.GetBackupRecordsByTenantId(tenantId))
            {
                var storage = _backupStorageFactory.GetBackupStorage(record);
                if (storage == null)
                {
                    continue;
                }

                if (storage.IsExists(record.StoragePath))
                {
                    backupHistory.Add(new BackupHistoryRecord
                    {
                        Id = record.Id,
                        FileName = record.Name,
                        StorageType = record.StorageType,
                        CreatedOn = record.CreatedOn,
                        ExpiresOn = record.ExpiresOn
                    });
                }
                else
                {
                    _backupRepository.DeleteBackupRecord(record.Id);
                }
            }
            return backupHistory;
        }

        public void StartTransfer(StartTransferRequest request)
        {
            var progress = _backupWorker.StartTransfer(request.TenantId, request.TargetRegion, request.BackupMail, request.NotifyUsers);
            if (!string.IsNullOrEmpty(progress.Error))
            {
                throw new FaultException();
            }
        }

        public void StartRestore(StartRestoreRequest request)
        {
            if (request.StorageType == BackupStorageType.Local)
            {
                if (string.IsNullOrEmpty(request.FilePathOrId) || !File.Exists(request.FilePathOrId))
                {
                    throw new FileNotFoundException();
                }
            }

            if (!request.BackupId.Equals(Guid.Empty))
            {
                var backupRecord = _backupRepository.GetBackupRecord(request.BackupId);
                if (backupRecord == null)
                {
                    throw new FileNotFoundException();
                }

                request.FilePathOrId = backupRecord.StoragePath;
                request.StorageType = backupRecord.StorageType;
                request.StorageParams = JsonConvert.DeserializeObject<Dictionary<string, string>>(backupRecord.StorageParams);
            }

            var progress = _backupWorker.StartRestore(request);
            if (!string.IsNullOrEmpty(progress.Error))
            {
                throw new FaultException();
            }
        }

        public BackupProgress GetBackupProgress(int tenantId)
        {
            return _backupWorker.GetBackupProgress(tenantId);
        }

        public BackupProgress GetTransferProgress(int tenantId)
        {
            return _backupWorker.GetTransferProgress(tenantId);
        }

        public BackupProgress GetRestoreProgress(int tenantId)
        {
            return _backupWorker.GetRestoreProgress(tenantId);
        }

        public string GetTmpFolder()
        {
            return _backupWorker.TempFolder;
        }

        public List<TransferRegion> GetTransferRegions()
        {
            var settings = _configuration.GetSetting<BackupSettings>("backup");

            return settings.WebConfigs.Elements.Select(configElement =>
            {
                var config = Utils.ConfigurationProvider.Open(PathHelper.ToRootedConfigPath(configElement.Path));
                var baseDomain = config.AppSettings.Settings["core:base-domain"].Value;

                return new TransferRegion
                {
                    Name = configElement.Region,
                    BaseDomain = baseDomain,
                    IsCurrentRegion = configElement.Region.Equals(settings.WebConfigs.CurrentRegion, StringComparison.InvariantCultureIgnoreCase)
                };
            })
            .ToList();
        }

        public void CreateSchedule(CreateScheduleRequest request)
        {
            _backupRepository.SaveBackupSchedule(
                new BackupSchedule()
                {
                    TenantId = request.TenantId,
                    Cron = request.Cron,
                    BackupMail = request.BackupMail,
                    BackupsStored = request.NumberOfBackupsStored,
                    StorageType = request.StorageType,
                    StorageBasePath = request.StorageBasePath,
                    StorageParams = JsonConvert.SerializeObject(request.StorageParams)
                });
        }

        public void DeleteSchedule(int tenantId)
        {
            _backupRepository.DeleteBackupSchedule(tenantId);
        }

        public ScheduleResponse GetSchedule(int tenantId)
        {
            var schedule = _backupRepository.GetBackupSchedule(tenantId);
            if (schedule != null)
            {
                var tmp = new ScheduleResponse
                {
                    StorageType = schedule.StorageType,
                    StorageBasePath = schedule.StorageBasePath,
                    BackupMail = schedule.BackupMail,
                    NumberOfBackupsStored = schedule.BackupsStored,
                    Cron = schedule.Cron,
                    LastBackupTime = schedule.LastBackupTime,
                    StorageParams = JsonConvert.DeserializeObject<Dictionary<string, string>>(schedule.StorageParams)
                };

                return tmp;
            }
            else
            {
                return null;
            }
        }
    }
}