private async Task <List <IEventMessageDraft> > CreateEventMessagesAsync(IEventSourcedAggregateRoot aggregate, IReadOnlyCollection <DomainAggregateEvent> events)
{
var messages = new List <IEventMessageDraft>();
Guid?aggregateClassId = entityTypeManager.TryGetClassInfoByClrType(aggregate.GetType())?.Id;
if (aggregateClassId == null)
{
throw new InvalidOperationException($"Cannot save event sourced aggregate of type {aggregate.GetType()}: its class ID has not been defined");
}
foreach (DomainAggregateEvent ev in events)
{
IEventMessageDraft message = await eventMessageFactory.CreateMessageAsync(ev);
message.SetMetadata(BasicEventMetadataNames.AggregateClassId, aggregateClassId.Value.ToString());
message.SetMetadata(BasicEventMetadataNames.AggregateVersion, (aggregate.Version + 1).ToString());
if (aggregate is ITenantOwned tenantOwned)
{
message.SetMetadata(BasicEventMetadataNames.AggregateTenantId, tenantOwned.TenantId?.ToString());
}
messages.Add(message);
}
return(messages);
}
public CrudAggregateStoreTests()
{
crudRepository = new InMemoryCrudRepository();
entityTypeManager = Substitute.For <IEntityTypeManager>();
publishEventBuffer = Substitute.For <IPublishEventBuffer>();
domainClasses = new List <DomainClassInfo>()
{
new DomainClassInfo(TestAggregateClassId, null, typeof(TestAggregate))
};
entityTypeManager.GetClassInfoByClassId(Guid.Empty)
.ReturnsForAnyArgs(ci => domainClasses.Single(x => x.Id == ci.Arg <Guid>()));
entityTypeManager.TryGetClassInfoByClrType(null)
.ReturnsForAnyArgs(ci => domainClasses.SingleOrDefault(x => x.ClrType == ci.Arg <Type>()));
entityTypeManager.GetClassInfoByClrType(null)
.ReturnsForAnyArgs(ci => domainClasses.Single(x => x.ClrType == ci.Arg <Type>()));
eventMessageFactory = Substitute.For <IEventMessageFactory>();
eventMessageFactory.CreateMessageAsync(null).ReturnsForAnyArgs(ci =>
{
var @event = ci.ArgAt <IEvent>(0);
Type messageType = typeof(EventMessageDraft <>).MakeGenericType(@event.GetType());
IEventMessageDraft messageDraft = (IEventMessageDraft)messageType.GetConstructor(new[] { @event.GetType() }).Invoke(new[] { @event });
messageDraft.SetMetadata("TestKey", "TestValue");
return(messageDraft);
}); // TODO something more lightweight?
sut = new CrudAggregateStore(crudRepository, entityTypeManager, publishEventBuffer, eventMessageFactory);
}
private async Task<List<IEventMessageDraft>> CreateEventMessagesAsync(IAggregateRoot aggregate, IReadOnlyCollection<DomainAggregateEvent> events)
{
var messages = new List<IEventMessageDraft>();
Guid? aggregateClassId = entityTypeManager.TryGetClassInfoByClrType(aggregate.GetType())?.Id;
foreach (DomainAggregateEvent ev in events)
{
IEventMessageDraft message = await eventMessageFactory.CreateMessageAsync(ev);
if (aggregateClassId != null)
{
message.SetMetadata(BasicEventMetadataNames.AggregateClassId, aggregateClassId.Value.ToString());
}
if (aggregate is ITenantOwned tenantOwned)
{
message.SetMetadata(BasicEventMetadataNames.AggregateTenantId, tenantOwned.TenantId?.ToString());
}
if (message.Metadata.GetEventId() == null)
{
message.SetMetadata(BasicEventMetadataNames.EventId, Guid.NewGuid().ToString());
}
messages.Add(message);
}
return messages;
}
public async Task CreateMessageAsync_CreatesCorrectMessageType()
{
IEvent @event = new Event1();
IEventMessageDraft message = await sut.CreateMessageAsync(@event);
message.Should().BeOfType <EventMessageDraft <Event1> >();
message.Event.Should().Be(@event);
}
public static void ReplaceMetadata(this IEventMessageDraft messageDraft, string key, string newValue)
{
if (messageDraft.Metadata.TryGetValue(key, out string oldValue))
{
messageDraft.SetMetadata("Original-" + key, oldValue);
}
messageDraft.SetMetadata(key, newValue);
}
public async Task <IEventMessageDraft> CreateMessageAsync(IEvent @event)
{
Type messageType = typeof(EventMessageDraft <>).MakeGenericType(@event.GetType());
IEventMessageDraft messageDraft = (IEventMessageDraft)messageType.GetConstructor(new[] { @event.GetType() }).Invoke(new[] { @event });
foreach (var metadataProvider in metadataProviders)
{
var metadata = await metadataProvider.GetMetadataAsync(messageDraft);
foreach (var pair in metadata)
{
messageDraft.SetMetadata(pair.key, pair.value);
}
}
return(messageDraft);
}
public EventSourcedRepositoryTests()
{
publishEventBuffer = Substitute.For <IPublishEventBuffer>();
eventStore = Substitute.For <IEventStore>();
entityTypeManager = Substitute.For <IEntityTypeManager>();
repositoryFilter1 = Substitute.For <IRepositoryFilter>();
repositoryFilter2 = Substitute.For <IRepositoryFilter>();
FakeClock.Setup();
eventStore.GetEventsAsync(entity2Id)
.Returns(new List <IEventStoreRecord>()
{
new FakeEventStoreRecord()
{
Event = new SetFooEvent()
{
AggregateId = entity2Id
},
StreamSequenceNumber = 1
}
});
eventStore.GetStreamMetadataAsync(entity2Id)
.Returns(new Dictionary <string, string>()
{
{ "TestKey", "TestValue" },
{ AggregateEventStreamMetadataNames.ClassId, entity2ClassId.ToString() }
});
eventStore.GetStreamMetadataAsync(entity3Id)
.Returns(new Dictionary <string, string>()
{
{ "TestKey", "TestValue" },
{ AggregateEventStreamMetadataNames.ClassId, entity3ClassId.ToString() }
});
eventStore.PushEventsAsync(Guid.Empty, null, null).ReturnsForAnyArgs(ci =>
{
var events = ci.ArgAt <IEnumerable <IUncommittedEventStoreRecord> >(1);
return(events.Select(x => new FakeEventStoreRecord()
{
AdditionalMetadata = x.Metadata,
Event = x.Event,
EventId = Guid.NewGuid(),
StoreDate = DateTimeOffset.Now,
StreamSequenceNumber = 0
}).ToList());
});
DomainClassInfo[] domainClasses = new[]
{
new DomainClassInfo(entityClassId, null, typeof(MyEntity)),
new DomainClassInfo(entity2ClassId, null, typeof(MyEntity2)),
new DomainClassInfo(entity3ClassId, null, typeof(MyEntity3LoadsAsDeleted))
};
entityTypeManager.GetClassInfoByClassId(Guid.Empty)
.ReturnsForAnyArgs(ci => domainClasses.Single(x => x.Id == ci.Arg <Guid>()));
entityTypeManager.TryGetClassInfoByClrType(null)
.ReturnsForAnyArgs(ci => domainClasses.SingleOrDefault(x => x.ClrType == ci.Arg <Type>()));
entityTypeManager.GetClassInfoByClrType(null)
.ReturnsForAnyArgs(ci => domainClasses.Single(x => x.ClrType == ci.Arg <Type>()));
eventMessageFactory = Substitute.For <IEventMessageFactory>();
eventMessageFactory.CreateMessageAsync(null).ReturnsForAnyArgs(ci =>
{
var @event = ci.ArgAt <IEvent>(0);
Type messageType = typeof(EventMessageDraft <>).MakeGenericType(@event.GetType());
IEventMessageDraft messageDraft = (IEventMessageDraft)messageType.GetConstructor(new[] { @event.GetType() }).Invoke(new[] { @event });
messageDraft.SetMetadata("TestKey", "TestValue");
return(messageDraft);
}); // TODO something more lightweight?
sut = new EventSourcedAggregateRepository(eventStore,
entityTypeManager, publishEventBuffer, new IRepositoryFilter[] {}, eventMessageFactory, new EntityFactory());
}
public EventSourcedAggregateStoreTests()
{
publishEventBuffer = Substitute.For <IPublishEventBuffer>();
eventStore = Substitute.For <IEventStore>();
entityTypeManager = Substitute.For <IEntityTypeManager>();
repositoryFilter1 = Substitute.For <IRepositoryFilter>();
repositoryFilter2 = Substitute.For <IRepositoryFilter>();
FakeClock.Setup();
entityEvents = new Dictionary <Guid, List <IEventStoreRecord> >()
{
{
entity2Id,
new List <IEventStoreRecord>()
{
new FakeEventStoreRecord()
{
Event = new SetFooEvent()
{
AggregateId = entity2Id
},
StreamSequenceNumber = 1
}
}
},
{
entity3Id,
new List <IEventStoreRecord>()
{
new FakeEventStoreRecord()
{
Event = new SetFooEvent()
{
AggregateId = entity3Id
},
StreamSequenceNumber = 1
}
}
},
{
entity4Id,
new List <IEventStoreRecord>()
{
new FakeEventStoreRecord()
{
Event = new SetFooEvent()
{
AggregateId = entity4Id
},
StreamSequenceNumber = 1
}
}
}
};
eventStore.FindEventsAsync(Arg.Any <Guid>())
.Returns(ci =>
{
var id = ci.ArgAt <Guid>(0);
if (entityEvents.TryGetValue(id, out var events))
{
return(events);
}
return(new List <IEventStoreRecord>());
});
eventStore.BatchFindEventsAsync(Arg.Any <Guid[]>())
.Returns(ci =>
{
var ids = ci.ArgAt <Guid[]>(0);
var result = new Dictionary <Guid, IReadOnlyCollection <IEventStoreRecord> >();
foreach (Guid id in ids)
{
if (entityEvents.TryGetValue(id, out var events))
{
result.Add(id, events);
}
}
return(result);
});
entityMetadata = new Dictionary <Guid, IReadOnlyDictionary <string, string> >()
{
{
entity2Id,
new Dictionary <string, string>()
{
{ "TestKey", "TestValue" },
{ AggregateEventStreamMetadataNames.ClassId, entity2ClassId.ToString() }
}
},
{
entity3Id,
new Dictionary <string, string>()
{
{ "TestKey", "TestValue" },
{ AggregateEventStreamMetadataNames.ClassId, entity3ClassId.ToString() }
}
},
{
entity4Id,
new Dictionary <string, string>()
{
{ "TestKey", "TestValue" },
{ AggregateEventStreamMetadataNames.ClassId, entity2ClassId.ToString() }
}
}
};
eventStore.FindStreamMetadataAsync(Arg.Any <Guid>())
.Returns(ci =>
{
var id = ci.ArgAt <Guid>(0);
if (entityMetadata.TryGetValue(id, out var metadata))
{
return(metadata);
}
return(new Dictionary <string, string>());
});
eventStore.BatchFindStreamMetadataAsync(Arg.Any <Guid[]>())
.Returns(ci =>
{
var ids = ci.ArgAt <Guid[]>(0);
var result = new Dictionary <Guid, IReadOnlyDictionary <string, string> >();
foreach (Guid id in ids)
{
if (entityMetadata.TryGetValue(id, out var metadata))
{
result.Add(id, metadata);
}
}
return(result);
});
eventStore.PushEventsAsync(Guid.Empty, null).ReturnsForAnyArgs(ci =>
{
var events = ci.ArgAt <IEnumerable <IUncommittedEventStoreRecord> >(1);
return(events.Select(x => new FakeEventStoreRecord()
{
AdditionalMetadata = x.Metadata,
Event = x.Event,
EventId = Guid.NewGuid(),
StoreDate = DateTimeOffset.Now,
StreamSequenceNumber = 0
}).ToList());
});
DomainClassInfo[] domainClasses = new[]
{
new DomainClassInfo(entityClassId, null, typeof(MyEntity)),
new DomainClassInfo(entity2ClassId, null, typeof(MyEntity2)),
new DomainClassInfo(entity3ClassId, null, typeof(MyEntity3LoadsAsDeleted))
};
entityTypeManager.GetClassInfoByClassId(Guid.Empty)
.ReturnsForAnyArgs(ci => domainClasses.Single(x => x.Id == ci.Arg <Guid>()));
entityTypeManager.TryGetClassInfoByClrType(null)
.ReturnsForAnyArgs(ci => domainClasses.SingleOrDefault(x => x.ClrType == ci.Arg <Type>()));
entityTypeManager.GetClassInfoByClrType(null)
.ReturnsForAnyArgs(ci => domainClasses.Single(x => x.ClrType == ci.Arg <Type>()));
eventMessageFactory = Substitute.For <IEventMessageFactory>();
eventMessageFactory.CreateMessageAsync(null).ReturnsForAnyArgs(ci =>
{
var @event = ci.ArgAt <IEvent>(0);
Type messageType = typeof(EventMessageDraft <>).MakeGenericType(@event.GetType());
IEventMessageDraft messageDraft = (IEventMessageDraft)messageType.GetConstructor(new[] { @event.GetType() }).Invoke(new[] { @event });
messageDraft.SetMetadata("TestKey", "TestValue");
return(messageDraft);
}); // TODO something more lightweight?
eventSourcedAggregateFactory = Substitute.For <IEventSourcedAggregateFactory>();
entity2 = new MyEntity2(entity2Id);
eventSourcedAggregateFactory.ConstructAndLoadEntityFromEvents(entity2Id,
Arg.Is <IReadOnlyDictionary <string, string> >(x => x.SequenceEqual(entityMetadata[entity2Id])),
Arg.Is <IReadOnlyCollection <IEventStoreRecord> >(x => x.SequenceEqual(entityEvents[entity2Id])))
.Returns(entity2);
entity3 = new MyEntity3LoadsAsDeleted(entity3Id);
eventSourcedAggregateFactory.ConstructAndLoadEntityFromEvents(entity3Id,
Arg.Is <IReadOnlyDictionary <string, string> >(x => x.SequenceEqual(entityMetadata[entity3Id])),
Arg.Is <IReadOnlyCollection <IEventStoreRecord> >(x => x.SequenceEqual(entityEvents[entity3Id])))
.Returns(entity3);
entity4 = new MyEntity2(entity4Id);
eventSourcedAggregateFactory.ConstructAndLoadEntityFromEvents(entity4Id,
Arg.Is <IReadOnlyDictionary <string, string> >(x => x.SequenceEqual(entityMetadata[entity4Id])),
Arg.Is <IReadOnlyCollection <IEventStoreRecord> >(x => x.SequenceEqual(entityEvents[entity4Id])))
.Returns(entity4);
sut = new EventSourcedAggregateStore(eventStore, entityTypeManager, publishEventBuffer,
new IRepositoryFilter[] { }, eventMessageFactory, eventSourcedAggregateFactory);
}
