public async Task DoWorkAsync()
{
try
{
var customerDataBatch = await _csvHelper
.LoadFromFileAsync <Customer>(_customerDataFilePath, _sentMessageIds.Count, _batchSize);
if (customerDataBatch == null)
{
throw new ArgumentNullException();
}
var emailsBatch = CustomerDataToEmail(customerDataBatch);
if (emailsBatch == null)
{
throw new NullReferenceException();
}
await SendBatchAsync(emailsBatch, CancellationToken);
}
catch (ArgumentNullException e)
{
_logger.Exception(e, "There is no customer data to process");
throw e;
}
catch (NullReferenceException e)
{
_logger.Exception(e, "There are no emails to send");
throw e;
}
catch (Exception e)
{
_logger.Exception(e);
throw e;
}
}