public void ReceiveMedicalRecord()
{
var client = SubscriptionClient.CreateFromConnectionString(connectionString, topicName, subscriptionName);
client.OnMessageAsync(async message =>
{
MedicalRecord medicalRecord = JsonConvert.DeserializeObject <MedicalRecord>(message.GetBody <string>());
Patient patient = new PatientService(medicalRecord.PatientId).Retrieve();
if (PatientExists(patient) && !MedicalRecordExists(medicalRecord))
{
await SaveMedicalRecord(medicalRecord);
}
});
}
private async Task RegisterMedicalRecord(MedicalRecordEntity entity)
{
// First map the XRM entity to a Data Contract using AutoMapper
// Then add the medical record to its patient via a Patient service
// A correlation ID identifies the medical record associated to its patient uniquely
Mapper.Initialize(cfg => cfg.CreateMap <MedicalRecordEntity, MedicalRecord>());
MedicalRecord medicalRecord = Mapper.Map <MedicalRecord>(entity);
medicalRecord.CorrelationId = new PatientService(medicalRecord.PatientId).AddMedicalRecord(medicalRecord);
// Create a connection to an Azure Service Bus Topic
// Serialize the medical record and add the correlation ID as an extra property of the message
var client = TopicClient.CreateFromConnectionString(connectionString, topicName);
var message = new BrokeredMessage(JsonConvert.SerializeObject(medicalRecord));
// Send the message to the Topic
await client.SendAsync(message);
}
public Guid AddMedicalRecord(MedicalRecord medicalRecord)
{
// If the patient already has this medical record
// Return its correlation ID
Guid?correlationId = this.patient.MedicalRecords.SingleOrDefault(r => r.Id == medicalRecord.Id)?.CorrelationId;
if (correlationId.HasValue)
{
return(correlationId.Value);
}
// Otherwise, generate a new correlation ID
// Persist the medical record to the data context
medicalRecord.CorrelationId = Guid.NewGuid();
dataContext.MedicalRecords.Add(medicalRecord);
dataContext.SaveChanges();
return(medicalRecord.CorrelationId);
}
private async Task SaveMedicalRecord(MedicalRecord medicalRecord)
{
dataContext.MedicalRecords.Add(medicalRecord);
await dataContext.SaveChangesAsync();
}