Method Watch

os/gcfg/gcfg_loader.go:145–167

Watch starts watching for configuration changes and automatically updates the target struct name: the name of the watcher, which is used to identify this watcher This method sets up a watcher that will call Load() when configuration changes are detected

(ctx context.Context, name string)

// name: the name of the watcher, which is used to identify this watcher
// This method sets up a watcher that will call Load() when configuration changes are detected
func (l *Loader[T]) Watch(ctx context.Context, name string) error {
	if name == "" {
		return gerror.New("Watcher name cannot be empty")
	}
	adapter := l.config.GetAdapter()
	if watcherAdapter, ok := adapter.(WatcherAdapter); ok {
		watcherAdapter.AddWatcher(name, func(ctx context.Context) {
			// Reload configuration when change is detected
			if err := l.Load(ctx); err != nil {
				// Use the configured error handler if available, otherwise execute default logging
				if l.watchErrorFunc != nil {
					l.watchErrorFunc(ctx, err)
				} else {
					// Default logging using intlog (internal logging for development)
					intlog.Errorf(ctx, "Configuration load failed in watcher %s: %v", name, err)
				}
			}
		})
		l.watcherName = name
		return nil
	}
	return gerror.New("Watcher adapter not found")
}

// MustWatch is like Watch but panics if there is an error
func (l *Loader[T]) MustWatch(ctx context.Context, name string) {