various: standardize registry APIs; truncate metrics responses at 10MB

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: I428255e61f8d2211fec0c320527b8e066a6a6964

internal/aggregate/custom_events.go

@@ -54,3 +54,20 @@ func (r *CustomEventRegistry) OverflowCount() int {
 	defer r.mu.RUnlock()
 	return r.overflowCount
 }
+
+// Contains checks if an event name exists in the registry.
+func (r *CustomEventRegistry) Contains(eventName string) bool {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	_, exists := r.events[eventName]
+	return exists
+}
+
+// Count returns the number of unique events in the registry.
+func (r *CustomEventRegistry) Count() int {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	return len(r.events)
+}

internal/normalize/referrer_registry.go

@@ -56,3 +56,20 @@ func (r *ReferrerRegistry) OverflowCount() int {
 	defer r.mu.RUnlock()
 	return r.overflowCount
 }
+
+// Contains checks if a source exists in the registry.
+func (r *ReferrerRegistry) Contains(source string) bool {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	_, exists := r.sources[source]
+	return exists
+}
+
+// Count returns the number of unique sources in the registry.
+func (r *ReferrerRegistry) Count() int {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	return len(r.sources)
+}