We do not want to add duplicated subscriptiosn

Signed-off-by: Matthias Wessendorf <[email protected]>

cmd/subscribe.go

@@ -61,14 +61,10 @@ func runSubscribe(cmd *cobra.Command, args []string) (err error) {
 	}
 
 	// add subscription	to function
-	f.Deploy.Subscriptions = append(f.Deploy.Subscriptions, fn.KnativeSubscription{
-		Source:  cfg.Source,
-		Filters: extractFilterMap(cfg.Filter),
-	})
+	f.Deploy.Subscriptions = updateOrAddSubscription(f.Deploy.Subscriptions, cfg)
 
 	// pump it
 	return f.Write()
-
 }
 
 func extractFilterMap(filters []string) map[string]string {
@@ -91,6 +87,33 @@ type subscibeConfig struct {
 	Source string
 }
 
+func updateOrAddSubscription(subscriptions []fn.KnativeSubscription, cfg subscibeConfig) []fn.KnativeSubscription {
+	found := false
+	newFilters := extractFilterMap(cfg.Filter)
+
+	// Iterate over subscriptions to find if one with the same source already exists
+	for i, subscription := range subscriptions {
+		if subscription.Source == cfg.Source {
+			found = true
+			// Update filters. Override if the key already exists.
+			for newKey, newValue := range newFilters {
+				subscription.Filters[newKey] = newValue
+			}
+			subscriptions[i] = subscription // Reassign the updated subscription
+			break
+		}
+	}
+
+	// If a subscription with the source was not found, add a new one
+	if !found {
+		subscriptions = append(subscriptions, fn.KnativeSubscription{
+			Source:  cfg.Source,
+			Filters: newFilters,
+		})
+	}
+	return subscriptions
+}
+
 func newSubscribeConfig(cmd *cobra.Command) (c subscibeConfig) {
 	c = subscibeConfig{
 		Filter: viper.GetStringSlice("filter"),