优化结构

internal/integration/runtimeconfig/store.go

@@ -68,6 +68,13 @@ func (s *Store) Set(config Config) {
 	config = cloneConfig(config)
 	key := configKey(config.Kind, config.Provider)
 	s.mu.Lock()
+	if s.values == nil {
+		s.values = make(map[string]Config)
+	}
+	if previous, exists := s.values[key]; exists && sameConfig(previous, config) {
+		s.mu.Unlock()
+		return
+	}
 	s.values[key] = config
 	callbacks := s.matchingListenersLocked(config.Kind, config.Provider)
 	s.mu.Unlock()
@@ -83,7 +90,12 @@ func (s *Store) Delete(kind, provider string) {
 	kind = strings.ToLower(strings.TrimSpace(kind))
 	provider = strings.ToLower(strings.TrimSpace(provider))
 	s.mu.Lock()
-	delete(s.values, configKey(kind, provider))
+	key := configKey(kind, provider)
+	if _, exists := s.values[key]; !exists {
+		s.mu.Unlock()
+		return
+	}
+	delete(s.values, key)
 	callbacks := s.matchingListenersLocked(kind, provider)
 	s.mu.Unlock()
 	config := Config{Kind: kind, Provider: provider}
@@ -142,6 +154,9 @@ func (s *Store) Subscribe(kind, provider string, callback func(Config)) func() {
 	s.mu.Lock()
 	s.nextID++
 	id := s.nextID
+	if s.listeners == nil {
+		s.listeners = make(map[uint64]listener)
+	}
 	s.listeners[id] = listener{kind: strings.ToLower(strings.TrimSpace(kind)), provider: strings.ToLower(strings.TrimSpace(provider)), callback: callback}
 	s.mu.Unlock()
 	return func() {

internal/integration/runtimeconfig/store_test.go

@@ -63,3 +63,23 @@ func TestStoreReplaceSkipsUnchangedValues(t *testing.T) {
 		t.Fatal("changed replace notification was not delivered")
 	}
 }
+
+func TestStoreSetSkipsUnchangedValues(t *testing.T) {
+	var store Store
+	updates := make(chan Config, 1)
+	stop := store.Subscribe("mq", "rabbitmq", func(config Config) { updates <- config })
+	defer stop()
+	config := Config{Kind: "mq", Provider: "rabbitmq", Enabled: true, Values: json.RawMessage(`{"host":"localhost"}`)}
+	store.Set(config)
+	select {
+	case <-updates:
+	case <-time.After(time.Second):
+		t.Fatal("initial set notification was not delivered")
+	}
+	store.Set(config)
+	select {
+	case update := <-updates:
+		t.Fatalf("unchanged set emitted notification: %#v", update)
+	case <-time.After(20 * time.Millisecond):
+	}
+}