public void Save(AggregateRoot aggregateRoot, int expectedVersion)
{
var events = aggregateRoot.GetUncommittedChanges();
var lastStoredEvent = Events
.Where(e => e.Id == aggregateRoot.Id)
.OrderByDescending(ev => ev.Version)
.FirstOrDefault();
var lastVersion = lastStoredEvent == null ? -1 : lastStoredEvent.Version;
if (lastVersion != expectedVersion)
{
throw new ConcurrencyException();
}
foreach (var @event in events)
{
var serializedEvent = _eventsSerializer.SerializeEvent(@event);
lastVersion = @event.Version;
Events.Add(new EventDescriptor
{
Version = @event.Version,
Id = aggregateRoot.Id,
Data = serializedEvent.Data,
Type = serializedEvent.Type
});
_bus.Send(@event);
}
var snapshottableAggregateRoot = aggregateRoot as SnapshottableAggregateRoot;
if (snapshottableAggregateRoot != null && snapshottableAggregateRoot.ShouldCreateSnapshot())
{
var snapshot = snapshottableAggregateRoot.GetSnapshot();
snapshot.Version = lastVersion;
_snapshotStore.SaveSnapshot(snapshot);
}
}
public when_saving_a_new_snapshotFixture(): base()
{
Snapshot = new Snapshot(Guid.NewGuid(), 1, new TestSnapshot { Name = "TestName" });
FolderName = Snapshot.EventSourceId.ToString().Substring(0, 2);
FileName = Snapshot.EventSourceId.ToString().Substring(2) + ".ss";
SnapshotStore.SaveSnapshot(Snapshot);
}
public when_getting_the_snapshot()
{
Snapshot = new Snapshot(Guid.NewGuid(), 1, new TestSnapshot {
Name = "Name"
});
SnapshotStore.SaveSnapshot(Snapshot);
_retrieved = SnapshotStore.GetSnapshot(Snapshot.EventSourceId, long.MaxValue);
}
public void SetUp()
{
Snapshot = new Snapshot(Guid.NewGuid(), 1, new TestSnapshot {
Name = "Name"
});
SnapshotStore.SaveSnapshot(Snapshot);
_retrieved = SnapshotStore.GetSnapshot(Snapshot.EventSourceId, long.MaxValue);
}
public void SetUp()
{
Snapshot = new Snapshot(Guid.NewGuid(), 1, new TestSnapshot {
Name = "TestName"
});
_foldername = Snapshot.EventSourceId.ToString().Substring(0, 2);
_filename = Snapshot.EventSourceId.ToString().Substring(2) + ".ss";
SnapshotStore.SaveSnapshot(Snapshot);
}
public void SnapshotStoreLoadsSnapshotFromPersistentStore()
{
var persistentSnapshotStore = new InMemorySnapshotStore();
var snapshotStore = new SnapshotStore(persistentSnapshotStore);
var guid = Guid.NewGuid();
var aggregate = new TestSnapshotAggregate(guid, "Test aggregate");
snapshotStore.SaveSnapshot(aggregate);
snapshotStore.GetSnapshot(guid).Should().NotBeNull();
snapshotStore.GetSnapshot(guid).AggregateId.Should().Be(guid);
}
public void SnapshotStoreSavesSnapshotToPersistentStore()
{
var persistentSnapshotStore = new InMemorySnapshotStore();
var snapshotStore = new SnapshotStore(persistentSnapshotStore);
var guid = Guid.NewGuid();
var aggregate = new TestSnapshotAggregate(guid, "Test aggregate");
snapshotStore.SaveSnapshot(aggregate);
persistentSnapshotStore.Find(guid).FirstOrDefault().Should().NotBeNull();
persistentSnapshotStore.Find(guid).FirstOrDefault().AggregateId.Should().Be(guid);
}
public void SnapshotStoreShouldReturnTheCorrectAggregateType()
{
var persistentSnapshotStore = new InMemorySnapshotStore();
var snapshotStore = new SnapshotStore(persistentSnapshotStore);
var guid = Guid.NewGuid();
var aggregate = new TestSnapshotAggregate(guid, "Test aggregate");
snapshotStore.SaveSnapshot(aggregate);
var snapshot = snapshotStore.GetSnapshot(guid) as TestAggregateSnapshot;
snapshot.Should().NotBeNull();
}
public void SnapshotShouldBeSuccessfullyAppliedToAggregate()
{
var persistentSnapshotStore = new InMemorySnapshotStore();
var snapshotStore = new SnapshotStore(persistentSnapshotStore);
var guid = Guid.NewGuid();
const string name = "Test aggregate";
var aggregate = new TestSnapshotAggregate(guid, name);
snapshotStore.SaveSnapshot(aggregate);
var snapshot = snapshotStore.GetSnapshot(guid) as TestAggregateSnapshot;
var newAggregate = new TestSnapshotAggregate(Guid.NewGuid(), String.Empty);
newAggregate.SetSnapshot(snapshot);
newAggregate.Id.Should().Be(guid);
newAggregate.ReturnNameForTest().Should().Be(name);
}
