public Session(
ILoggerFactory loggerFactory,
IEventStore eventStore,
IEventPublisher eventPublisher,
IEventSerializer eventSerializer,
IEventUpdateManager eventUpdateManager = null,
IEnumerable <IMetadataProvider> metadataProviders = null)
{
if (loggerFactory == null)
{
throw new ArgumentNullException(nameof(loggerFactory));
}
if (metadataProviders == null)
{
metadataProviders = Enumerable.Empty <IMetadataProvider>();
}
_logger = loggerFactory.CreateLogger <Session>();
_eventStore = eventStore ?? throw new ArgumentNullException(nameof(eventStore));
_eventSerializer = eventSerializer ?? throw new ArgumentNullException(nameof(eventSerializer));
_eventUpdateManager = eventUpdateManager;
_metadataProviders = metadataProviders.Concat(new IMetadataProvider[]
{
new StreamTypeMetadataProvider(),
new EventTypeMetadataProvider(),
new CorrelationIdMetadataProvider()
});
_eventPublisher = eventPublisher ?? throw new ArgumentNullException(nameof(eventPublisher));
}
public static ISession Create(
ITransaction transaction,
IEventStore eventStore,
ISnapshotStore snapshotStore,
ILoggerFactory loggerFactory = null,
IEventPublisher eventPublisher = null,
IEventRouter eventRouter = null,
IEventUpdateManager eventUpdateManager = null,
IEnumerable <IMetadataProvider> metadataProviders = null,
ISnapshotStrategy snapshotStrategy = null,
IEventsMetadataService eventsMetadataService = null)
{
// TODO: refactor ctor's Session sucks :(
if (eventStore == null)
{
throw new ArgumentNullException(nameof(eventStore));
}
if (snapshotStore == null)
{
throw new ArgumentNullException(nameof(snapshotStore));
}
if (loggerFactory == null)
{
loggerFactory = new NoopLoggerFactory();
}
if (eventRouter == null)
{
eventRouter = StubEventRouter.Ok();
}
if (eventPublisher == null)
{
eventPublisher = new EventPublisher(eventRouter);
}
var session = new Session(
loggerFactory: loggerFactory,
transaction: transaction,
eventStore: eventStore,
snapshotStore: snapshotStore,
eventPublisher: eventPublisher,
eventUpdateManager: eventUpdateManager,
metadataProviders: metadataProviders,
snapshotStrategy: snapshotStrategy,
eventsMetadataService: eventsMetadataService);
return(session);
}
public Session(
ILoggerFactory loggerFactory,
ITransaction transaction,
IEventStore eventStore,
ISnapshotStore snapshotStore,
IEventPublisher eventPublisher,
IEventUpdateManager eventUpdateManager = null,
IEnumerable <IMetadataProvider> metadataProviders = null,
ISnapshotStrategy snapshotStrategy = null,
IEventsMetadataService eventsMetadataService = null)
{
if (loggerFactory == null)
{
throw new ArgumentNullException(nameof(loggerFactory));
}
if (metadataProviders == null)
{
metadataProviders = Enumerable.Empty <IMetadataProvider>();
}
metadataProviders = metadataProviders.Concat(new IMetadataProvider[]
{
new AggregateTypeMetadataProvider(),
new EventTypeMetadataProvider(),
new CorrelationIdMetadataProvider()
});
if (snapshotStrategy == null)
{
snapshotStrategy = new IntervalSnapshotStrategy();
}
if (eventsMetadataService == null)
{
eventsMetadataService = new EventsMetadataService();
}
_logger = loggerFactory.Create(nameof(Session));
_transaction = transaction ?? throw new ArgumentNullException(nameof(transaction));
_eventStore = eventStore ?? throw new ArgumentNullException(nameof(eventStore));
_snapshotStore = snapshotStore ?? throw new ArgumentNullException(nameof(snapshotStore));
_eventPublisher = eventPublisher ?? throw new ArgumentNullException(nameof(eventPublisher));
_snapshotStrategy = snapshotStrategy;
_eventUpdateManager = eventUpdateManager;
_metadataProviders = metadataProviders;
_eventsMetadataService = eventsMetadataService;
}
public static ISession Create(
ITransaction transaction,
ICompositeStores stores,
ILoggerFactory loggerFactory = null,
IEventPublisher eventPublisher = null,
IEventRouter eventRouter = null,
IEventUpdateManager eventUpdateManager = null,
IEnumerable <IMetadataProvider> metadataProviders = null,
ISnapshotStrategy snapshotStrategy = null,
IEventsMetadataService eventsMetadataService = null)
{
return(Create(transaction,
stores.EventStore,
stores.SnapshotStore,
loggerFactory,
eventPublisher,
eventRouter,
eventUpdateManager,
metadataProviders,
snapshotStrategy,
eventsMetadataService));
}
private async Task <Session> ArrangeSessionAsync <TAggregate>(Guid aggregateId, IEventUpdateManager eventUpdateManager = null, params IDomainEvent[] arrangeEvents)
where TAggregate : Aggregate, new()
{
var metadataProviders = new IMetadataProvider[]
{
new StreamTypeMetadataProvider(),
new EventTypeMetadataProvider(),
new CorrelationIdMetadataProvider()
};
var loggerFactory = new LoggerFactory();
var eventPublisher = new EventPublisher(new StubEventRouter());
var eventStore = new InMemoryEventStore();
var eventSerializer = new EventSerializer(new JsonTextSerializer());
var session = new Session(loggerFactory, eventStore, eventPublisher, eventSerializer, eventUpdateManager);
var aggregate = (TAggregate)Activator.CreateInstance(typeof(TAggregate), args: aggregateId);
aggregate.SetVersion(arrangeEvents.Length - 1);
var serializedEvents = arrangeEvents.Select((evt, index) =>
{
index++;
var metadatas =
metadataProviders.SelectMany(md => md.Provide(aggregate, evt, EventSource.Metadata.Empty)).Concat(new[]
{
new KeyValuePair <string, object>(MetadataKeys.EventId, Guid.NewGuid()),
new KeyValuePair <string, object>(MetadataKeys.EventVersion, aggregate.Version + index)
});
return(eventSerializer.Serialize(evt, new EventSource.Metadata(metadatas)));
});
eventStore.BeginTransaction();
await eventStore.SaveAsync(serializedEvents);
await eventStore.CommitAsync();
return(session);
}
private async Task <Session> ArrangeSessionAsync <TAggregate>(Guid aggregateId, IEventUpdateManager eventUpdateManager = null, params IDomainEvent[] arrangeEvents)
where TAggregate : Aggregate, new()
{
var metadataProviders = new IMetadataProvider[]
{
new AggregateTypeMetadataProvider(),
new EventTypeMetadataProvider(),
new CorrelationIdMetadataProvider()
};
var loggerFactory = new NoopLoggerFactory();
var eventPublisher = new EventPublisher(new StubEventRouter());
var stores = new InMemoryStores();
var session = new Session(loggerFactory, stores, stores.EventStore, stores.SnapshotStore, eventPublisher, eventUpdateManager: eventUpdateManager);
var aggregate = (TAggregate)Activator.CreateInstance(typeof(TAggregate), args: aggregateId);
var serializedEvents = arrangeEvents.Select((e, index) =>
{
index++;
var eventVersion = aggregate.Version + index;
var metadata = metadataProviders.SelectMany(md => md.Provide(aggregate, e, MetadataCollection.Empty)).Concat(new[]
{
new KeyValuePair <string, object>(MetadataKeys.EventId, Guid.NewGuid()),
new KeyValuePair <string, object>(MetadataKeys.EventVersion, eventVersion)
});
return(new UncommittedEvent(aggregate, e, eventVersion)
{
Metadata = new MetadataCollection(metadata)
});
});
stores.BeginTransaction();
await stores.EventStore.AppendAsync(serializedEvents);
await stores.CommitAsync();
return(session);
}
