public async Task SaveAsync <TAggregate>(IAggregateRoot <TAggregate> aggregateRoot, string stream)
{
await _connection.AppendToStreamAsync(stream, aggregateRoot.OriginalVersion,
aggregateRoot.GetUncommittedEvents());
aggregateRoot.ClearUncommittedEvents();
}
public void PersistEvents(IAggregateRoot aggregate)
{
try
{
var events = aggregate.GetUncommittedEvents();
if (!events.Any())
{
return;
}
Database.Open().Events.Insert(
Id: Guid.NewGuid(),
AggregateId: aggregate.Id,
Version: aggregate.Version + 1,
Events: _serializer.Serialize(events),
Created: DateTime.UtcNow
);
}
catch (SqlException ex)
{
if (ex.Number == UniqueKeyViolation)
{
throw new ConcurrencyException();
}
throw;
}
}
private EventStream CreateEventStream(IAggregateRoot aggregateRoot, ICommand command)
{
var uncommittedEvents = aggregateRoot.GetUncommittedEvents().ToList();
aggregateRoot.ClearUncommittedEvents();
var aggregateRootTypeCode = _aggregateRootTypeProvider.GetTypeCode(aggregateRoot.GetType());
foreach (var evnt in uncommittedEvents)
{
evnt.Version = aggregateRoot.Version + 1;
}
return new EventStream(
command.Id,
aggregateRoot.UniqueId,
aggregateRootTypeCode,
aggregateRoot.Version + 1,
DateTime.Now,
uncommittedEvents);
}
public async Task AppendUncommittedEventsToNewStream([Frozen] IEventStoreConnection connection,
IAggregateRoot <TestAggregate> aggregateRoot, EventStoreRepository sut)
{
await sut.SaveAsync(aggregateRoot);
await connection.Received(1).AppendToStreamAsync($"{aggregateRoot.GetType().Name}-{aggregateRoot.Id}",
aggregateRoot.OriginalVersion, aggregateRoot.GetUncommittedEvents());
}
static void PublishEvent(IAggregateRoot root, IServiceBus bus)
{
bus.PublishAsync(root.GetUncommittedEvents());
root.AcceptUncommittedEvents();
}