public async Task SaveAsync(TAggregate aggregateRoot, CancellationToken cancellationToken = default(CancellationToken))
{
// Get a copy of the uncommited domain events before saving.
IDomainEventStream <TAggregateId> domainEventStreamToSave = aggregateRoot.GetUncommitedDomainEvents();
await _domainEventStore.SaveAsync(aggregateRoot, cancellationToken).ConfigureAwait(false);
// No need to await. Any publish errors will be communicated through OnError event.
// Not passing cancellation token since event notification should not be cancelled.
Task publishTask = PublishDomainEventsAsync(domainEventStreamToSave);
}
public async Task Should_Append_To_Domain_Event_Store()
{
IDomainEventAsyncStore <TestAggregate, Guid> eventStore = Factory.CreateEventAsyncStore <TestAggregate, Guid>();
// Create aggregate.
TestAggregate aggregate = new TestAggregate(Guid.NewGuid());
await eventStore.SaveAsync(aggregate);
IDomainEventStream <Guid> stream = await eventStore.GetDomainEventStreamAsync(aggregate.Id);
Assert.NotNull(stream);
Assert.Equal(aggregate.Id, stream.AggregateId);
Assert.Equal(1, stream.DomainEventCount);
}
public async Task GetDomainEventStreamAsync_Should_Retrieve_Aggregate_Stream()
{
IDomainEventAsyncStore <TestAggregate, Guid> eventStore = Factory.CreateEventAsyncStore <TestAggregate, Guid>();
// Create and modify aggregate.
TestAggregate aggregate = new TestAggregate(Guid.NewGuid());
aggregate.ExecuteSomeOperation("I was modified!~");
await eventStore.SaveAsync(aggregate);
IDomainEventStream <Guid> stream = await eventStore.GetDomainEventStreamAsync(aggregate.Id);
Assert.NotNull(stream);
Assert.Equal(aggregate.Id, stream.AggregateId);
// 2 domain events in total: Created + Modified events.
Assert.Equal(2, stream.DomainEventCount);
// Stream starts from version 1 to 2.
Assert.Equal(1, stream.BeginVersion);
Assert.Equal(2, stream.EndVersion);
}
