private void Subscribe(IActorRef subscriber, ClusterEvent.SubscriptionInitialStateMode initMode,
IEnumerable <Type> to)
{
if (initMode == ClusterEvent.SubscriptionInitialStateMode.InitialStateAsEvents)
{
Action <object> pub = @event =>
{
var eventType = @event.GetType();
//TODO: IsAssignableFrom same as in scala?
if (to.Any(o => o.IsAssignableFrom(eventType)))
{
subscriber.Tell(@event);
}
};
PublishDiff(Gossip.Empty, _latestGossip, pub);
}
else if (initMode == ClusterEvent.SubscriptionInitialStateMode.InitialStateAsSnapshot)
{
SendCurrentClusterState(subscriber);
}
foreach (var t in to)
{
_eventStream.Subscribe(subscriber, t);
}
}
/// <summary>
/// Subscribe to one or more cluster domain events.
/// </summary>
/// <param name="subscriber">The actor who'll receive the cluster domain events</param>
/// <param name="initialStateMode">
/// If set to <see cref="ClusterEvent.SubscriptionInitialStateMode.InitialStateAsEvents"/>, then the events corresponding to the current state
/// are sent to <paramref name="subscriber"/> to mimic what it would have seen if it were listening to the events when they occurred in the past.
///
/// If set to <see cref="ClusterEvent.SubscriptionInitialStateMode.InitialStateAsSnapshot"/>, then a snapshot of
/// <see cref="ClusterEvent.CurrentClusterState"/> will be sent to <paramref name="subscriber"/> as the first message.
/// </param>
/// <param name="to">An array of event types that the actor receives.</param>
/// <exception cref="ArgumentException">
/// This exception is thrown when the array of supplied types, <paramref name="to"/>, is empty
/// or contains types that do not implement <see cref="ClusterEvent.IClusterDomainEvent"/>.
/// </exception>
public void Subscribe(IActorRef subscriber, ClusterEvent.SubscriptionInitialStateMode initialStateMode, params Type[] to)
{
if (to.Length == 0)
throw new ArgumentException("At least one `IClusterDomainEvent` class is required", nameof(to));
if (!to.All(t => typeof(ClusterEvent.IClusterDomainEvent).IsAssignableFrom(t)))
throw new ArgumentException($"Subscribe to `IClusterDomainEvent` or subclasses, was [{string.Join(", ", to.Select(c => c.Name))}]", nameof(to));
ClusterCore.Tell(new InternalClusterAction.Subscribe(subscriber, initialStateMode, ImmutableHashSet.Create(to)));
}
/// <summary>
/// Subscribe to one or more cluster domain events.
/// </summary>
/// <param name="subscriber">The actor who'll receive the cluster domain events</param>
/// <param name="initialStateMode">
/// If set to <see cref="ClusterEvent.SubscriptionInitialStateMode.InitialStateAsEvents"/> the events corresponding to the current state
/// will be sent to <see cref="subscriber"/> to mimic what it would have seen if it were listening to the events when they occurred in the past.
///
/// If set to <see cref="ClusterEvent.SubscriptionInitialStateMode.InitialStateAsSnapshot"/>
/// a snapshot of <see cref="ClusterEvent.CurrentClusterState"/> will be sent to <see cref="subscriber"/> as the first message. </param>
/// <param name="to"><see cref="ClusterEvent.IClusterDomainEvent"/> subclasses</param>
public void Subscribe(IActorRef subscriber, ClusterEvent.SubscriptionInitialStateMode initialStateMode, Type[] to)
{
var val = _clusterCore;
_clusterCore.Tell(new InternalClusterAction.Subscribe(subscriber, initialStateMode, ImmutableHashSet.Create <Type>(to)));
}
public Subscribe(IActorRef subscriber, ClusterEvent.SubscriptionInitialStateMode initialStateMode,
ImmutableHashSet<Type> to)
{
_subscriber = subscriber;
_initialStateMode = initialStateMode;
_to = to;
}
