protected void Given(List <EventInStream> events, ITurnEventsIntoCommand worker)
{
_worker = worker;
_worker.SubscribeTo(_eventStore);
var eventInStreams = events.ToList();
foreach (var @event in eventInStreams)
{
var streamEvent = ToStreamEvent(@event);
_eventStore.Append(streamEvent);
}
}
public void first_test()
{
_eventStore.Append(new List <IDomainEvent> {
Customer1Created, Customer1AddressChanged
});
_eventStore.Append(new List <IDomainEvent> {
Customer2Created, Customer2AddressChanged
});
var allEvents = _eventStore.LoadAll().ToList();
allEvents.Should().BeEquivalentTo(Customer1Created, Customer1AddressChanged, Customer2Created, Customer2AddressChanged);
}
protected void Given(IEnumerable <EventInStream> events, T readModel)
{
_readModel = readModel;
_readModel.SubscribeTo(_eventStore);
var eventInStreams = events.ToList();
foreach (var @event in eventInStreams)
{
var streamEvent = ToStreamEvent(@event);
_eventStore.Append(streamEvent);
}
}
public async Task Execute(string[] args)
{
// run to establish an initial connection.
await Task.Run(() =>
{
var id = Guid.NewGuid();
var pendingEvent = _factory.Create(new ShoppingCart(id), new ShoppingCartCreated(Guid.NewGuid()));
return(_store.Append(id, 0, new[] { pendingEvent }));
});
Console.WriteLine("=====================================\n");
Console.WriteLine("Starting event store throughtput test.\n");
var stopWatch = new Stopwatch();
var tasks = new List <Task>();
var max = 10000;
Console.WriteLine($"Testing {max} events.\n");
stopWatch.Start();
for (var x = 0; x < max; x++)
{
tasks.Add(Task.Run(() =>
{
var id = Guid.NewGuid();
var pendingEvent = _factory.Create(new ShoppingCart(id), new ShoppingCartCreated(Guid.NewGuid()));
return(_store.Append(id, 0, new[] { pendingEvent }));
}));
}
var masterTask = Task.WhenAll(tasks);
while (!masterTask.IsCompleted)
{
var numberCompleted = tasks.Where(e => e.IsCompleted).Count();
Console.Write($"\r{numberCompleted}");
}
stopWatch.Stop();
var time = stopWatch.Elapsed;
Console.WriteLine($" shopping carts took {time.TotalSeconds:#.##} seconds.\n");
Console.WriteLine($"Throughput: {max / time.TotalSeconds:#.##} per second.\n");
Console.WriteLine("=====================================\n");
}
/// <inheritdoc />
public async Task Execute(IMessage message, ExecutionContext context)
{
if (context.IsSuccessful)
{
foreach (var instance in context.RaisedEvents.Union(new[] { context.Response as EventMessage }).Where(e => e != null))
{
await _eventStore.Append(instance);
await _messageGateway.Publish(instance, context);
}
}
}
public async Task Save(TAggregate aggregate, bool takeSnapshot = false)
{
await _eventStore.Append(aggregate.GetId(), aggregate.Version, GetPendingEvents(aggregate));
aggregate.ClearPendingEvents();
if (takeSnapshot)
{
var snapshot = _snapshotFactory.Create <TAggregate, TState>(aggregate);
await _snapShotStore.TakeSnapshot(snapshot);
}
}
public void SubscribeTo(IEventStore eventStore)
{
string date = DateTime.Today.ToString(DateTimeFormat);
eventStore.SubscribeToStream($"gameLobby-{date}", @event =>
{
var e = (CreateGameRequestApproved)@event.Event;
var streamName = $"game-{e.GameId}";
var createStreamEvent = new CreateStreamEvent(streamName, StreamPositions.CreateNewStream, new GameCreated(e.GameId));
eventStore.Append(createStreamEvent);
});
}
/// <inheritdoc />
public async Task Execute(ExecutionContext context)
{
if (context.IsSuccessful)
{
var raisedEvents = context.RaisedEvents.Union(new[] { context.Response as EventMessage }).Where(e => e != null).ToArray();
foreach (var instance in raisedEvents)
{
await _eventStore.Append(instance).ConfigureAwait(false);
#pragma warning disable 4014
_tasks.Add(() => Task.Run(() => _messageGateway.Publish(instance, context)));
#pragma warning restore 4014
}
}
}
public void SubscribeTo(IEventStore eventStore)
{
eventStore.SubscribeToStream("et-BasketCheckedOut", streamEvent =>
{
var e = (BasketCheckedOut)streamEvent.GetOriginatingEvent;
var orderItems = e.Items.Select(i => new OrderItem(i)).ToList();
var ordersCreatedStream = eventStore.ReadStream("et-orderCreated");
var createOrderPolicy = new CreateOrderHandler();
createOrderPolicy.Load(ordersCreatedStream);
var orderCreated =
createOrderPolicy.Handle(new CreateOrder(e.CustomerId, e.BasketId, orderItems)) as OrderCreated;
var @event = new StreamEvent(
$"order-{orderCreated.Order.OrderId}",
StreamPositions.CreateNewStream,
StreamPositions.Any,
DateTime.Now,
orderCreated);
eventStore.Append(@event);
});
}
private void TryPersistEvents(EventStreamContext eventStreamContext, ActionInfo successActionInfo)
{
Func <EventStreamContext, bool> tryPersistEventsAction = (context) => {
try {
_eventStore.Append(context.EventStream);
return(true);
}
catch (Exception ex) {
if (ex is ConcurrentException && IsEventStreamCommitted(context.EventStream))
{
return(true);
}
var errorMessage = string.Format("{0} raised when persisting events:{1}", ex.GetType().Name, context.EventStream.GetStreamInformation());
_logger.Error(errorMessage, ex);
if (ex is ConcurrentException)
{
context.SetConcurrentException(new ErrorInfo {
ErrorMessage = errorMessage, Exception = ex
});
return(true);
}
return(false);
}
};
if (_retryService.TryAction("TryPersistEvents", () => tryPersistEventsAction(eventStreamContext), 3))
{
successActionInfo.Action(successActionInfo.Data);
}
else
{
_retryService.RetryInQueue(new ActionInfo("TryPersistEvents", (obj) => tryPersistEventsAction(obj as EventStreamContext), eventStreamContext, successActionInfo));
}
}
public void _1()
{
_eventStore.Append(SingleCustomerQueueCreated.SetAnyVersionAndTimestamp());
_eventStore.Append(CounterA_Added.SetAnyVersionAndTimestamp());
_eventStore.Append(Ticket1_Added.SetAnyVersionAndTimestamp());
_eventStore.Append(CustomerWithTicket1_Taken.SetAnyVersionAndTimestamp());
_eventStore.Append(CustomerWithTicket1_Served.SetAnyVersionAndTimestamp());
_eventStore.Append(CustomerWithTicket1_Revoked.SetAnyVersionAndTimestamp());
var allEvents = _eventStore.LoadAllFor <CustomerQueueSubscription>().ToList();
ListsAreEquivalent(allEvents,
SingleCustomerQueueCreated,
CounterA_Added,
Ticket1_Added,
CustomerWithTicket1_Taken,
CustomerWithTicket1_Served,
CustomerWithTicket1_Revoked);
}
public Task Publish(IDomainEvent evt) => _eventStore.Append(evt);
private void ProcessEventMessage(EventMessage eventMessage)
{
eventStore.Append(eventMessage.EventId, eventMessage.Message);
}
public override Result Handle(AggregateRootCreated e) => _eventStore .Append(e) .ToOkResult();
public override Result Handle(RemoteEvent e) => _eventStore.Append(e) .ToOkResult();
public static Task Append(this IEventStore eventStore, Guid streamId, CancellationToken cancellationToken, params IEvent[] events)
{
return(eventStore.Append(streamId, null, cancellationToken, events));
}
public void Listen()
{
DomainEventPublisher.Instance.Subscribe(domainEvent => _eventStore.Append(domainEvent));
}
public void AppendEvents(T aggregate)
{
var events = aggregate.GetUncommittedEvents();
_eventStore.Append(GetStreamName(aggregate.Id), events);
}
/// <summary>
/// Saves the specified aggregate root.
/// </summary>
/// <typeparam name="AR">The type of the aggregate root.</typeparam>
/// <param name="aggregateRoot">The aggregate root.</param>
/// <exception cref="Elders.Cronus.DomainModeling.AggregateRootException"></exception>
public void Save <AR>(AR aggregateRoot) where AR : IAggregateRoot
{
if (ReferenceEquals(null, aggregateRoot.UncommittedEvents) || aggregateRoot.UncommittedEvents.Count() == 0)
{
return;
}
var arCommit = new AggregateCommit(aggregateRoot.State.Id as IBlobId, aggregateRoot.Revision, aggregateRoot.UncommittedEvents.ToList());
var result = atomicAction.Execute(aggregateRoot.State.Id, aggregateRoot.Revision, () => eventStore.Append(arCommit));
if (result.IsSuccessful)
{
// #prodalzavameNapred
// #bravoKobra
// https://www.youtube.com/watch?v=2wWusHu_3w8
}
else
{
throw new AggregateStateFirstLevelConcurrencyException("", result.Errors.MakeJustOneException());
}
}
internal static void Update(this IEventStore eventStore, IAggregate aggregate)
{
eventStore.Append(aggregate.Id, aggregate.DequeuePendingEvents());
}
public override Result Handle(CustomerQueueEvent e) => _eventStore.Append(e) .ToOkResult();
public async Task Handle(TEvent @event, CancellationToken cancellationToken)
{
await eventStore.Append(@event.StreamId, cancellationToken, @event);
await eventStore.SaveChanges(cancellationToken);
}
public async Task Save(T aggregate)
{
await _eventStore.Append(aggregate.Id, aggregate.Version, GetPendingEvents(aggregate));
aggregate.ClearPendingEvents();
}
/// <summary>
/// 保存聚合事件。
/// </summary>
public void Save(IEventSourced aggregateRoot, string correlationId = null)
{
var events = aggregateRoot.GetEvents();
if (events.IsEmpty())
{
return;
}
var aggregateRootType = aggregateRoot.GetType();
int aggregateRootTypeCode = _typeCodeProvider.GetTypeCode(aggregateRootType);
string aggregateRootId = aggregateRoot.Id.ToString();
if (!_eventStore.IsExist(correlationId))
{
var sourcedEvents = events.Select(@event => new EventData()
{
AggregateRootId = aggregateRootId,
AggregateRootTypeCode = aggregateRootTypeCode,
Version = @event.Version,
CorrelationId = correlationId,
Payload = _serializer.Serialize(@event)
}).ToArray();
_eventStore.Append(sourcedEvents);
_logger.Info("sourcing events persistent completed. aggregateRootId:{0},aggregateRootType:{1}.",
aggregateRootId, aggregateRootType.FullName);
_cache.Set(aggregateRoot, aggregateRoot.Id);
}
else
{
events = _eventStore.FindAll(correlationId).Select(Deserialize);
_logger.Info("the command generates events have been saved, load from storage. command id:{0}", correlationId);
}
_eventBus.Publish(new EventStream {
AggregateRootId = aggregateRootId,
AggregateRootTypeCode = aggregateRootTypeCode,
CommandId = correlationId,
StartVersion = events.Min(item => item.Version),
EndVersion = events.Max(item => item.Version),
Events = events.OfType <IEvent>().ToArray()
});
_logger.Info("publish all events. event ids: [{0}]", string.Join(",", events.Select(@event => @event.Id).ToArray()));
if (_snapshotStore.StorageEnabled)
{
var snapshot = new SnapshotData(aggregateRootTypeCode, aggregateRootId)
{
Data = _serializer.Serialize(aggregateRoot),
Version = aggregateRoot.Version
};
_snapshotStore.Save(snapshot).ContinueWith(task => {
if (task.Status == TaskStatus.Faulted)
{
_logger.Error(task.Exception, "snapshot persistent failed. aggregateRootId:{0},aggregateRootType:{1},version:{2}.", aggregateRootId, aggregateRootType.FullName, aggregateRoot.Version);
}
});
//Task.Factory.StartNew(() => {
// try {
// _snapshotStore.Save(snapshot);
// }
// catch (Exception ex) {
// _logger.Error(ex, "snapshot persistent failed. aggregateRootId:{0},aggregateRootType:{1},version:{2}.", aggregateRootId, aggregateRootType.FullName, aggregateRoot.Version);
// }
//});
}
}
