private void DeleteOldEntries(string fileName, int overflow)
{
var backupFileName = fileName + ".bak";
try
{
if (_fileStoreService.Exists(backupFileName))
{
_fileStoreService.DeleteFile(backupFileName);
}
// Creating a backup copy of the log in case a crash happends.
_fileStoreService.TryMove(fileName, backupFileName, false);
// read the content of file and remove old entries
string fileContentString = string.Empty;
_fileStoreService.TryReadTextFile(fileName, out fileContentString);
var logContent = RemoveOlderEntries(fileContentString, overflow);
// delete current log file en rewrite it without old entries
_fileStoreService.DeleteFile(fileName);
_fileStoreService.WriteFile(fileName, x => GenerateStreamFromString(logContent));
// deleting the backup copy
_fileStoreService.DeleteFile(backupFileName);
}
catch (Exception ex)
{
LogError(ex);
}
}
/// <inheritdoc />
public async Task RestoreBackup()
{
if (!connectivity.IsConnected)
{
return;
}
var backups = await backupService.GetFileNames();
if (backups.Contains(DatabaseConstants.BACKUP_NAME))
{
var backupStream =
await backupService.Restore(DatabaseConstants.BACKUP_NAME, DatabaseConstants.BACKUP_NAME);
fileStore.WriteFile(DatabaseConstants.BACKUP_NAME, backupStream.ReadToEnd());
var moveSucceed = fileStore.TryMove(DatabaseConstants.BACKUP_NAME, ApplicationContext.DbPath, true);
if (!moveSucceed)
{
throw new BackupException("Error Moving downloaded backup file");
}
settingsManager.LastDatabaseUpdate = DateTime.Now;
}
}
private async Task DownloadBackup()
{
if (!connectivity.IsConnected)
{
return;
}
var backups = await cloudBackupService.GetFileNames()
.ConfigureAwait(false);
if (backups.Contains(DatabaseConstants.BACKUP_NAME))
{
var backupStream = await cloudBackupService.Restore(DatabaseConstants.BACKUP_NAME, DatabaseConstants.BACKUP_NAME)
.ConfigureAwait(false);
fileStore.WriteFile(DatabaseConstants.BACKUP_NAME, backupStream.ReadToEnd());
var moveSucceed = fileStore.TryMove(DatabaseConstants.BACKUP_NAME, EfCoreContext.DbPath, true);
if (!moveSucceed)
{
throw new BackupException("Error Moving downloaded backup file");
}
}
}
/// <inheritdoc />
public async Task RestoreBackup()
{
if (!connectivity.IsConnected)
{
return;
}
var backups = await backupService.GetFileNames();
// Dispose dbfactory to release the dbFile.
dbFactory.Dispose();
if (backups.Contains(DatabaseConstants.BACKUP_NAME))
{
var backupStream =
await backupService.Restore(DatabaseConstants.BACKUP_NAME, DatabaseConstants.BACKUP_NAME);
fileStore.WriteFile(DatabaseConstants.BACKUP_NAME, backupStream.ReadToEnd());
var moveSucceed = fileStore.TryMove(DatabaseConstants.BACKUP_NAME, DatabaseConstants.DB_NAME, true);
if (!moveSucceed)
{
throw new BackupException("Error Moving downloaded backup file");
}
}
else if (backups.Contains(DatabaseConstants.BACKUP_NAME_OLD))
{
var backupStream =
await backupService.Restore(DatabaseConstants.BACKUP_NAME_OLD, DatabaseConstants.BACKUP_NAME_OLD);
fileStore.WriteFile(DatabaseConstants.BACKUP_NAME_OLD, backupStream.ReadToEnd());
// Execute migration
await dbFactory.Init();
fileStore.TryMove(DatabaseConstants.BACKUP_NAME_OLD, DatabaseConstants.DB_NAME_OLD, true);
await dbFactory.MigrateOldDatabase();
fileStore.DeleteFile(DatabaseConstants.DB_NAME_OLD);
}
dbFactory.Dispose();
settingsManager.LastDatabaseUpdate = DateTime.Now;
}
/// <summary>
/// Restores an existing backup from the backupservice.
/// </summary>
public async Task RestoreBackup()
{
if (!connectivity.IsConnected)
{
return;
}
var backupStream = await backupService.Restore(DatabaseConstants.BACKUP_NAME, DatabaseConstants.BACKUP_NAME);
fileStore.WriteFile(DatabaseConstants.BACKUP_NAME, backupStream.ReadToEnd());
var moveSucceed = fileStore.TryMove(DatabaseConstants.BACKUP_NAME, DatabaseConstants.DB_NAME, true);
if (!moveSucceed)
{
throw new BackupException("Error Moving downloaded backup file");
}
await dbFactory.Init();
settingsManager.LastDatabaseUpdate = DateTime.Now;
}
/// <summary>
/// Restores an existing backup from the backupservice.
/// If it was an old backup, it will delete the existing db an make an migration.
/// After the restore it will perform a reload of the data so that the cache works with the new data.
/// </summary>
public async Task RestoreBackup()
{
if (!connectivity.IsConnected)
{
return;
}
await backupService.Restore(DatabaseConstants.BACKUP_NAME, DatabaseConstants.BACKUP_NAME);
var moveSucceed = fileStore.TryMove(DatabaseConstants.BACKUP_NAME, DatabaseConstants.DB_NAME, true);
if (!moveSucceed)
{
throw new BackupException("Error Moving downloaded backup file");
}
databaseManager.CreateDatabase();
PaymentRepository.IsCacheMarkedForReload = true;
settingsManager.LastDatabaseUpdate = DateTime.Now;
}
