static Task SendToInstance <T>(SagaQueryConsumeContext <TSaga, T> context, ISagaPolicy <TSaga, T> policy, TSaga instance,
IPipe <SagaConsumeContext <TSaga, T> > next, ISession session)
where T : class
{
try
{
var sagaConsumeContext = new NHibernateSagaConsumeContext <TSaga, T>(session, context, instance);
sagaConsumeContext.LogUsed();
return(policy.Existing(sagaConsumeContext, next));
}
catch (SagaException)
{
throw;
}
catch (Exception ex)
{
throw new SagaException(ex.Message, typeof(TSaga), typeof(T), instance.CorrelationId, ex);
}
}
async Task ISagaRepository <TSaga> .Send <T>(ConsumeContext <T> context, ISagaPolicy <TSaga, T> policy, IPipe <SagaConsumeContext <TSaga, T> > next)
{
if (!context.CorrelationId.HasValue)
{
throw new SagaException("The CorrelationId was not specified", typeof(TSaga), typeof(T));
}
var sagaId = context.CorrelationId.Value;
using (var session = _sessionFactory.OpenSession())
using (var transaction = session.BeginTransaction())
{
var inserted = false;
if (policy.PreInsertInstance(context, out var instance))
{
inserted = await PreInsertSagaInstance(context, session, instance).ConfigureAwait(false);
}
try
{
if (instance == null)
{
instance = await session.GetAsync <TSaga>(sagaId, LockMode.Upgrade).ConfigureAwait(false);
}
if (instance == null)
{
var missingSagaPipe = new MissingPipe <T>(session, next);
await policy.Missing(context, missingSagaPipe).ConfigureAwait(false);
}
else
{
var sagaConsumeContext = new NHibernateSagaConsumeContext <TSaga, T>(session, context, instance);
sagaConsumeContext.LogUsed();
await policy.Existing(sagaConsumeContext, next).ConfigureAwait(false);
if (inserted && !sagaConsumeContext.IsCompleted)
{
await session.UpdateAsync(instance).ConfigureAwait(false);
}
}
if (transaction.IsActive)
{
await transaction.CommitAsync().ConfigureAwait(false);
}
}
catch (Exception ex)
{
context.LogFault(this, ex, instance?.CorrelationId);
if (transaction.IsActive)
{
await transaction.RollbackAsync().ConfigureAwait(false);
}
throw;
}
}
}