protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
while (!stoppingToken.IsCancellationRequested)
{
var data = JsonConvert.SerializeObject(_client.ReadNextObjectMessage("EmailQueue"));
if (data.Contains("PatientCreated"))
{
string objectId = GetAttributeValue(GetAttributeValuePair(data, "ID"));
var dataObject = JsonConvert.DeserializeObject(data);
using (EventProducer eventProducer = _eventStore.CreateEventProducer())
{
try
{
_logger.LogInformation("Email confirmation sent!");
EventData eventData = eventProducer.CreateEventData(dataObject, "EmailConfirmation-Sent");
eventProducer.SendEvent($"AMQMessages-Patient-{objectId}", eventData);
}
catch (Exception)
{
_logger.LogInformation("Email confirmation sent!");
EventData eventData = eventProducer.CreateEventData(dataObject, "EmailConfirmation-Failed");
eventProducer.SendEvent($"AMQMessages-Patient-{objectId}", eventData);
}
}
}
await Task.Delay(1000, stoppingToken);
}
}
public async Task <PatientDTO> Handle(CreatePatientCommand request, CancellationToken cancellationToken)
{
bool tableInsertStatus;
try
{
_patient = await _patientRepository.AddAsync(request.PatientDTO);
using (EventProducer eventProducer = _eventStore.CreateEventProducer())
{
EventData eventData = eventProducer.CreateEventData(_patient, "Patient-Creation-Pending");
eventProducer.SendEvent($"Patient-{_patient.ID}", eventData);
}
tableInsertStatus = true;
}
catch (Exception)
{
tableInsertStatus = false;
}
if (tableInsertStatus == true)
{
try
{
PatientMessage patientMessage = new PatientMessage("PatientCreated", _patient);
var message = await _client.SendObjectMessageAsync("EmailQueue", patientMessage);
using (EventProducer eventProducer = _eventStore.CreateEventProducer())
{
EventData eventData = eventProducer.CreateEventData(message, "PatientCreatedConfirmation-Sent");
eventProducer.SendEvent($"AMQMessages-Patient-{_patient.ID}", eventData);
}
}
catch (Exception)
{
await _patientRepository.DeleteAsync(_patient.ID);
using (EventProducer eventProducer = _eventStore.CreateEventProducer())
{
EventData eventData = eventProducer.CreateEventData(_patient, "Patient-Creation-Rollback");
eventProducer.SendEvent($"Patient-{_patient.ID}", eventData);
}
tableInsertStatus = false;
}
}
using (EventConsumer eventConsumer = _eventStore.CreateEventConsumer($"AMQMessages-Patient-{_patient.ID}", "EmailCheck"))
{
bool eventFound = false;
while (eventFound == false)
{
var events = await eventConsumer.ReadStreamEventsForwardAsync();
if (eventConsumer.FindEventType(events, "EmailConfirmation-Sent"))
{
eventFound = true;
_workerSucceeded = true;
}
else if (eventConsumer.FindEventType(events, "EmailConfirmation-Failed"))
{
eventFound = true;
_workerSucceeded = false;
}
}
}
if (_workerSucceeded == false)
{
await _patientRepository.DeleteAsync(_patient.ID);
using (EventProducer eventProducer = _eventStore.CreateEventProducer())
{
EventData eventData = eventProducer.CreateEventData(_patient, "Patient-Creation-Rollback");
eventProducer.SendEvent($"Patient-{_patient.ID}", eventData);
}
tableInsertStatus = false;
}
if (tableInsertStatus == false)
{
return(null);
}
using (EventProducer eventProducer = _eventStore.CreateEventProducer())
{
EventData eventData = eventProducer.CreateEventData(_patient, "Patient-Creation-Committed");
eventProducer.SendEvent($"Patient-{_patient.ID}", eventData);
}
return(_patient);
}