/// <summary>
/// Attempts to get the aggregate root entity associated with the aggregate identifier.
/// </summary>
/// <param name="identifier">The aggregate identifier.</param>
/// <returns>The found <typeparamref name="TAggregateRoot"/>, or empty if not found.</returns>
public async Task <Optional <TAggregateRoot> > GetOptionalAsync(string identifier)
{
Aggregate aggregate;
if (_unitOfWork.TryGet(identifier, out aggregate))
{
return(new Optional <TAggregateRoot>((TAggregateRoot)aggregate.Root));
}
var streamUserCredentials = _configuration.StreamUserCredentialsResolver.Resolve(identifier);
var streamName = _configuration.StreamNameResolver.Resolve(identifier);
var slice =
await
_connection.ReadStreamEventsForwardAsync(streamName, StreamPosition.Start, _configuration.SliceSize,
false, streamUserCredentials);
if (slice.Status == SliceReadStatus.StreamDeleted || slice.Status == SliceReadStatus.StreamNotFound)
{
return(Optional <TAggregateRoot> .Empty);
}
var root = _rootFactory();
root.Initialize(slice.Events.Select(resolved => _configuration.Deserializer.Deserialize(resolved)));
while (!slice.IsEndOfStream)
{
slice =
await
_connection.ReadStreamEventsForwardAsync(streamName, slice.NextEventNumber, _configuration.SliceSize,
false, streamUserCredentials);
root.Initialize(slice.Events.Select(resolved => _configuration.Deserializer.Deserialize(resolved)));
}
aggregate = new Aggregate(identifier, slice.LastEventNumber, root);
_unitOfWork.Attach(aggregate);
return(new Optional <TAggregateRoot>(root));
}
public void Setup()
{
_aggregate1 = AggregateStubs.Create(new ChangedAggregateRootEntityStub());
_aggregate2 = AggregateStubs.Create(new ChangedAggregateRootEntityStub());
_sut = new ConcurrentUnitOfWork();
_sut.Attach(_aggregate1);
_sut.Attach(_aggregate2);
}
/// <summary>
/// Attempts to get the aggregate root entity associated with the aggregate identifier.
/// </summary>
/// <param name="identifier">The aggregate identifier.</param>
/// <returns>The found <typeparamref name="TAggregateRoot" />, or empty if not found.</returns>
public async Task <Optional <TAggregateRoot> > GetOptionalAsync(string identifier)
{
if (_unitOfWork.TryGet(identifier, out Aggregate aggregate))
{
return(new Optional <TAggregateRoot>((TAggregateRoot)aggregate.Root));
}
Optional <Snapshot> snapshot = await _reader.ReadOptionalAsync(identifier);
var version = StreamPosition.Start;
if (snapshot.HasValue)
{
version = snapshot.Value.Version + 1;
}
UserCredentials streamUserCredentials = _configuration.StreamUserCredentialsResolver.Resolve(identifier);
string streamName = _configuration.StreamNameResolver.Resolve(identifier);
StreamEventsSlice slice =
await
_connection.ReadStreamEventsForwardAsync(streamName, version, _configuration.SliceSize, false,
streamUserCredentials);
if (slice.Status == SliceReadStatus.StreamDeleted || slice.Status == SliceReadStatus.StreamNotFound)
{
return(Optional <TAggregateRoot> .Empty);
}
TAggregateRoot root = _rootFactory();
if (snapshot.HasValue)
{
root.RestoreSnapshot(snapshot.Value.State);
}
root.Initialize(slice.Events.Select(resolved => _configuration.Deserializer.Deserialize(resolved)));
while (!slice.IsEndOfStream)
{
slice =
await
_connection.ReadStreamEventsForwardAsync(streamName, slice.NextEventNumber, _configuration.SliceSize,
false, streamUserCredentials);
root.Initialize(slice.Events.Select(resolved => _configuration.Deserializer.Deserialize(resolved)));
}
aggregate = new Aggregate(identifier, (int)slice.LastEventNumber, root);
_unitOfWork.Attach(aggregate);
return(new Optional <TAggregateRoot>(root));
}
public void SetUp()
{
EmbeddedEventStore.Connection.DeleteAllStreams();
_model = new Model();
_root = SnapshotableAggregateRootEntityStub.Factory();
_unitOfWork = new ConcurrentUnitOfWork();
_unitOfWork.Attach(new Aggregate(_model.KnownIdentifier, 0, _root));
_resolver = A.Fake <IStreamNameResolver>();
_reader = A.Fake <IAsyncSnapshotReader>();
A.CallTo(() => _resolver.Resolve(_model.KnownIdentifier)).Returns(_model.KnownIdentifier);
A.CallTo(() => _resolver.Resolve(_model.UnknownIdentifier)).Returns(_model.UnknownIdentifier);
A.CallTo(() => _reader.ReadOptionalAsync(_model.KnownIdentifier))
.Returns(Task.FromResult(new Optional <Snapshot>(new Snapshot(100, new object()))));
A.CallTo(() => _reader.ReadOptionalAsync(_model.UnknownIdentifier))
.Returns(Task.FromResult(new Optional <Snapshot>(new Snapshot(100, new object()))));
_sut = new AsyncSnapshotableRepository <SnapshotableAggregateRootEntityStub>(
SnapshotableAggregateRootEntityStub.Factory,
_unitOfWork,
EmbeddedEventStore.Connection,
EventReaderConfigurationFactory.CreateWithResolver(_resolver),
_reader);
}
public void AttachThrowsWithSameAggregate()
{
Assert.Throws <ArgumentException>(() => _sut.Attach(_aggregate));
}
public void Setup()
{
_aggregate = AggregateStubs.Stub1;
_sut = new ConcurrentUnitOfWork();
_sut.Attach(_aggregate);
}
public void AttachAggregateDoesNotThrow()
{
var aggregate = AggregateStubs.Stub1;
Assert.DoesNotThrow(() => _sut.Attach(aggregate));
}
public void AttachNullThrows()
{
Assert.Throws <ArgumentNullException>(() => _sut.Attach(null));
}
public void SetUp()
{
EmbeddedEventStore.Instance.Connection.DeleteAllStreams();
_model = new Model();
_root = SnapshotableAggregateRootEntityStub.Factory();
_unitOfWork = new ConcurrentUnitOfWork();
_unitOfWork.Attach(new Aggregate(_model.KnownIdentifier, 0, _root));
_resolver = A.Fake<IStreamNameResolver>();
_reader = A.Fake<IAsyncSnapshotReader>();
A.CallTo(() => _resolver.Resolve(_model.KnownIdentifier)).Returns(_model.KnownIdentifier);
A.CallTo(() => _resolver.Resolve(_model.UnknownIdentifier)).Returns(_model.UnknownIdentifier);
A.CallTo(() => _reader.ReadOptionalAsync(_model.KnownIdentifier))
.Returns(Task.FromResult(new Optional<Snapshot>(new Snapshot(100, new object()))));
A.CallTo(() => _reader.ReadOptionalAsync(_model.UnknownIdentifier))
.Returns(Task.FromResult(new Optional<Snapshot>(new Snapshot(100, new object()))));
_sut = new AsyncSnapshotableRepository<SnapshotableAggregateRootEntityStub>(
SnapshotableAggregateRootEntityStub.Factory,
_unitOfWork,
EmbeddedEventStore.Instance.Connection,
EventReaderConfigurationFactory.CreateWithResolver(_resolver),
_reader);
}
public void Setup()
{
_aggregate = AggregateStubs.Stub1;
_sut = new ConcurrentUnitOfWork();
_sut.Attach(_aggregate);
}
public void Setup()
{
_aggregate1 = AggregateStubs.Create(new ChangedAggregateRootEntityStub());
_aggregate2 = AggregateStubs.Create(new ChangedAggregateRootEntityStub());
_sut = new ConcurrentUnitOfWork();
_sut.Attach(_aggregate1);
_sut.Attach(_aggregate2);
}
