add HasSubscribers method to check if there are supscribers listening…

… to given topic
dtomasi · Apr 2, 2021 · 631d012 · 631d012
1 parent cbc6cff
commit 631d012
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/event_bus.go b/event_bus.go
@@ -163,3 +163,8 @@ func (eb *EventBus) SubscribeCallback(topic string, callable CallbackFunc) {
 		evt.Done()
 	}(callable)
 }
+
+// Check if a topic has subscribers
+func (eb *EventBus) HasSubscribers(topic string) bool {
+	return len(eb.getSubscribingChannels(topic)) > 0
+}