protected override ISaga <T> DoCreateInstance(string sagaIdentifier, Func <T> sagaFactory)
{
try
{
var unitOfWOrk = CurrentUnitOfWork.Get();
var processRoot = unitOfWOrk.Root();
var sagaRoot = sagaFactory.Invoke();
var saga = new AnnotatedSaga <T>(sagaIdentifier, new HashSet <AssociationValue>(), sagaRoot, null, _sagaModel);
UnsavedSagasResource(processRoot).Add(sagaIdentifier);
unitOfWOrk.OnPrepareCommit(u =>
{
if (saga.IsActive)
{
StoreSaga(saga);
saga.AssociationValues.Commit();
UnsavedSagasResource(processRoot).Remove(sagaIdentifier);
}
});
_managedSagas[sagaIdentifier] = saga;
processRoot.OnCleanup(u => _managedSagas.Remove(sagaIdentifier));
return(saga);
}
catch (Exception e)
{
throw new SagaCreationException("An error occurred while attempting to create a new managed instance", e);
}
}
private void Commit(AnnotatedSaga <T> saga)
{
if (!saga.IsActive)
{
DeleteSaga(saga);
}
else
{
UpdateSaga(saga);
saga.AssociationValues.Commit();
}
}
private void UpdateSaga(AnnotatedSaga <T> saga)
{
_sagaStore.UpdateSaga(typeof(T), saga.SagaIdentifier, saga.Root, saga.TrackingToken, saga.AssociationValues);
}
private void StoreSaga(AnnotatedSaga <T> saga)
{
_sagaStore.InsertSaga(typeof(T), saga.SagaIdentifier, saga.Root, saga.TrackingToken, saga.AssociationValues.AsSet());
}
private void DeleteSaga(AnnotatedSaga <T> saga)
{
var associationValues = saga.AssociationValues.ToHashSet().Union(saga.AssociationValues.RemovedAssociations).ToHashSet();
_sagaStore.DeleteSaga(typeof(T), saga.SagaIdentifier, associationValues);
}
