public async Task <ISubscription> Subscribe(IEventHandlerFactory factory, object[] args = null)
{
Subscription s = new Subscription(true);
var lastPosition = (StreamPosition)await _stream.LastPosition();
string[] prefixes = _events.Select(x => x.Name).ToArray();
FilterOptions filters = new FilterOptions(EventTypeFilter.Prefix(prefixes));
// be very careful. We need to subscribe after the global position.
await _eventStore.SubscribeToAllAsync(lastPosition.GlobalPosition,
async (s, r, c) =>
{
var type = _schema.EventByName(r.Event.EventType);
if (type != null && _events.Contains(type))
{
using (var scope = factory.Scope())
{
var handler = scope.CreateHandler(type);
var(m, e) = _eventConverter.Convert(type, r);
await handler.Execute(m, e);
}
}
}, true, null, filters);
return(s);
}
public async Task SubscribeToStreams(IStreamPosition streamPosition, params SubscriptionInfo[] eventTypes)
{
var methods = new Dictionary <string, Func <IStreamSubscription, ResolvedEvent, CancellationToken, Task> >();
var prefixes = eventTypes.Select(x => x.EventType.Name).ToArray();
var filter = EventTypeFilter.Prefix(prefixes);
FilterOptions filterOptions = new FilterOptions(filter);
var esStreamPosition = ((StreamPosition)(streamPosition)).GlobalPosition;
var handlers = eventTypes.ToDictionary(x => x.EventType.Name, x => x.HandlerType);
var dict = eventTypes.Select(x => x.EventType).ToDictionary(x => x.Name);
await _connection.SubscribeToAllAsync(esStreamPosition, async (s, r, c) =>
{
await OnEventAppearead(s, r, methods, handlers, dict, c);
}, true, OnDropped, filterOptions);
}
