with callback instead

manager.go

@@ -34,15 +34,10 @@ func NewManager() *Manager {
 type ComponentsAreReady struct {
 }
 
-func (m *Manager) RunNonBlocking(ctx context.Context, readyChan chan ComponentsAreReady) error {
+type CleanupFunc func(ctx context.Context) error
+
+func (m *Manager) RunNonBlocking(ctx context.Context, readyChan chan ComponentsAreReady) (CleanupFunc, error) {
 	go func() error {
-		defer func() {
-			ctx, _ := context.WithTimeout(context.Background(), time.Second*5)
-			err := m.shutdown(ctx)
-			if err != nil {
-				panic(err)
-			}
-		}()
 		m.initLifetime()
 		err := m.init(ctx)
 		if err != nil {
@@ -63,7 +58,10 @@ func (m *Manager) RunNonBlocking(ctx context.Context, readyChan chan ComponentsA
 
 		return nil
 	}()
-	return nil
+
+	return func(ctx context.Context) error {
+		return m.shutdown(ctx)
+	}, nil
 }
 
 func (m *Manager) Run(ctx context.Context) error {