private async Task <Guid> SubscribeAsync(bool includeValues, IPredicate predicate, bool hasPredicate, TKey key, bool hasKey, Action <DictionaryEventHandlers <TKey, TValue> > handle, CancellationToken cancellationToken)
{
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 DictionaryEventHandlers <TKey, TValue>();
handle(handlers);
var flags = HDictionaryEventTypes.Nothing;
foreach (var handler in handlers)
{
flags |= handler.EventType;
}
// 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 => MapAddEntryListenerCodec.EncodeRequest(Name, includeValues, (int)flags, Cluster.IsSmartRouting),
1 => MapAddEntryListenerToKeyCodec.EncodeRequest(Name, ToData(key), includeValues, (int)flags, Cluster.IsSmartRouting),
2 => MapAddEntryListenerWithPredicateCodec.EncodeRequest(Name, ToData(predicate), includeValues, (int)flags, Cluster.IsSmartRouting),
3 => MapAddEntryListenerToKeyWithPredicateCodec.EncodeRequest(Name, ToData(key), ToData(predicate), includeValues, (int)flags, Cluster.IsSmartRouting),
_ => throw new NotSupportedException()
};
var subscription = new ClusterSubscription(
subscribeRequest,
ReadSubscribeResponse,
CreateUnsubscribeRequest,
ReadUnsubscribeResponse,
HandleEventAsync,
new MapSubscriptionState(mode, Name, handlers));
await Cluster.Events.InstallSubscriptionAsync(subscription, cancellationToken).CAF();
return(subscription.Id);
}
public MapSubscriptionState(int mode, string name, DictionaryEventHandlers <TKey, TValue> handlers)
: base(name, handlers)
{
Mode = mode;
}
