private async Task <Guid> SubscribeAsync(IPredicate predicate, bool hasPredicate, TKey key, bool hasKey, Action <ReplicatedDictionaryEventHandlers <TKey, TValue> > handle)
{
if (hasKey && key == null)
{
throw new ArgumentNullException(nameof(key));
}
if (hasPredicate && predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
if (handle == null)
{
throw new ArgumentNullException(nameof(handle));
}
var handlers = new ReplicatedDictionaryEventHandlers <TKey, TValue>();
handle(handlers);
// 0: no entryKey, no predicate
// 1: entryKey, no predicate
// 2: no entryKey, predicate
// 3: entryKey, predicate
var mode = (hasKey ? 1 : 0) + (hasPredicate ? 2 : 0);
var subscribeRequest = mode switch
{
0 => ReplicatedMapAddEntryListenerCodec.EncodeRequest(Name, Cluster.IsSmartRouting),
1 => ReplicatedMapAddEntryListenerToKeyCodec.EncodeRequest(Name, ToData(key), Cluster.IsSmartRouting),
2 => ReplicatedMapAddEntryListenerWithPredicateCodec.EncodeRequest(Name, ToData(predicate), Cluster.IsSmartRouting),
3 => ReplicatedMapAddEntryListenerToKeyWithPredicateCodec.EncodeRequest(Name, ToData(key), ToData(predicate), Cluster.IsSmartRouting),
_ => throw new NotSupportedException()
};
var subscription = new ClusterSubscription(
subscribeRequest,
ReadSubscribeResponse,
CreateUnsubscribeRequest,
ReadUnsubscribeResponse,
HandleEventAsync,
new MapSubscriptionState(mode, Name, handlers));
await Cluster.Events.InstallSubscriptionAsync(subscription).CAF();
return(subscription.Id);
}
public MapSubscriptionState(int mode, string name, ReplicatedDictionaryEventHandlers <TKey, TValue> handlers)
: base(name, handlers)
{
Mode = mode;
}
