public async Task DeliverBlast(EmailBlast blast, CancellationToken cancellationToken)
{
_logger.LogInformation($"Processing email blast with id {blast.Id}");
if (blast.Template == null)
{
throw new Exception($"Could not send blast with id {blast.Id}: template id was null");
}
if (blast.Customer == null)
{
throw new Exception($"Could not send blast with id {blast.Id}: customer id was null");
}
var template = await _templateRepository.GetByIdAsync(blast.Template, cancellationToken);
if (template == null)
{
await MarkBlastAsErrored(blast, cancellationToken);
throw new Exception($"Could not send blast with id {blast.Id}: template with " +
$"id {blast.Template} not found");
}
var customer = await _customerRepository.GetByIdAsync(blast.Customer, cancellationToken);
if (customer == null)
{
await MarkBlastAsErrored(blast, cancellationToken);
throw new Exception($"Could not send email blast with id {blast.Id}: " +
$"customer not found");
}
try
{
_logger.LogInformation($"Delivering email blast with template '{template.Name}' " +
$"for customer '{customer.FirstName} {customer.LastName}'");
var recipients =
await _recipientRepository.GetRecipientsForCustomer(blast.Customer, cancellationToken);
await ProcessBlast(template, customer, recipients, cancellationToken);
await MarkBlastAsDelivered(blast, recipients.Count, cancellationToken);
}
catch (Exception ex)
{
_logger.LogError(ex, $"Could not send email blast for blast {blast.Id}");
await MarkBlastAsErrored(blast, cancellationToken);
}
}
public async Task ExecuteAsync(CancellationToken cancellationToken)
{
while (cancellationToken.WaitHandle.WaitOne(5000) == false)
{
var pendingBlasts = await _emailBlastRepository.GetPendingEmailBlastsAsync(cancellationToken);
foreach (var blast in pendingBlasts)
{
_logger.LogInformation($"Processing email blast with id {blast.Id}");
if (blast.Template == null)
{
_logger.LogWarning($"Could not send blast with id {blast.Id}: template id was null");
continue;
}
if (blast.Customer == null)
{
_logger.LogWarning($"Could not send blast with id {blast.Id}: customer id was null");
continue;
}
try
{
var template = await _templateRepository.GetByIdAsync(blast.Template, cancellationToken);
if (template == null)
{
_logger.LogWarning(
$"Could not send blast with id {blast.Id}: template with " +
$"id {blast.Template} not found");
await MarkBlastAsErrored(blast, cancellationToken);
continue;
}
var customer = await _customerRepository.GetByIdAsync(blast.Customer, cancellationToken);
if (customer == null)
{
_logger.LogWarning($"Could not send email blast with id {blast.Id}: " +
$"customer not found");
await MarkBlastAsErrored(blast, cancellationToken);
continue;
}
_logger.LogInformation($"Delivering email blast with template '{template.Name}' " +
$"for customer '{customer.FirstName} {customer.LastName}'");
var recipients =
await _recipientRepository.GetRecipientsForCustomer(blast.Customer, cancellationToken);
await ProcessBlast(template, customer, recipients, cancellationToken);
await MarkBlastAsDelivered(blast, recipients.Count, cancellationToken);
}
catch (Exception ex)
{
_logger.LogError(ex, $"Could not send email blast for blast {blast.Id}");
await MarkBlastAsErrored(blast, cancellationToken);
}
}
}
}