private async Task <bool> CreateNewBackup()
{
if (!connectivity.IsConnected)
{
throw new NetworkConnectionException();
}
using (Stream dbStream = fileStore.OpenRead(DatabaseConstants.DB_NAME))
{
return(await cloudBackupService.UploadAsync(dbStream));
}
}
private async Task EnqueueBackupTaskAsync(int attempts = 0)
{
if (!connectivity.IsConnected)
{
throw new NetworkConnectionException();
}
logger.Info("Enqueue Backup upload.");
await semaphoreSlim.WaitAsync(BACKUP_OPERATION_TIMEOUT,
cancellationTokenSource.Token);
try
{
if (await cloudBackupService.UploadAsync(await fileStore.OpenReadAsync(DatabasePathHelper.DbPath)))
{
logger.Info("Upload complete. Release Semaphore.");
semaphoreSlim.Release();
await toastService.ShowToastAsync(Strings.BackupCreatedMessage);
}
else
{
cancellationTokenSource.Cancel();
}
}
catch (FileNotFoundException ex)
{
logger.Error(ex, "Backup failed because database was not found.");
}
catch (OperationCanceledException ex)
{
logger.Error(ex, "Enqueue Backup failed.");
await Task.Delay(BACKUP_REPEAT_DELAY);
await EnqueueBackupTaskAsync(attempts + 1);
}
catch (ServiceException ex)
{
logger.Error(ex, "ServiceException when tried to enqueue Backup.");
throw;
}
catch (BackupAuthenticationFailedException ex)
{
logger.Error(ex, "BackupAuthenticationFailedException when tried to enqueue Backup.");
throw;
}
logger.Warn("Enqueue Backup failed.");
}
private async Task EnqueueBackupTaskAsync(int attempts = 0)
{
if (!connectivity.IsConnected)
{
throw new NetworkConnectionException();
}
await semaphoreSlim.WaitAsync(ServiceConstants.BACKUP_OPERATION_TIMEOUT,
cancellationTokenSource.Token);
try
{
if (await cloudBackupService.UploadAsync(fileStore.OpenRead(DatabasePathHelper.GetDbPath())))
{
semaphoreSlim.Release();
}
else
{
cancellationTokenSource.Cancel();
}
}
catch (FileNotFoundException ex)
{
logManager.Error(ex, "Backup failed because database was not found.");
}
catch (OperationCanceledException ex)
{
logManager.Error(ex, "Enqueue Backup failed.");
await Task.Delay(ServiceConstants.BACKUP_REPEAT_DELAY);
await EnqueueBackupTaskAsync(attempts + 1);
}
catch (ServiceException ex)
{
logManager.Error(ex, "ServiceException when tried to enqueue Backup.");
throw;
}
catch (BackupAuthenticationFailedException ex)
{
logManager.Error(ex, "BackupAuthenticationFailedException when tried to enqueue Backup.");
throw;
}
logManager.Warn("Enqueue Backup failed.");
}
