Method Make

di/factory.go:36–54

Make creates an instance under the provided name. It an instance is already created and it is not nil, that instance is returned to the caller.

(name string)

// Make creates an instance under the provided name. It an instance is already
// created and it is not nil, that instance is returned to the caller.
func (f *Factory) Make(name string) (interface{}, error) {
	var err error

	conn, err, _ := f.group.Do(name, func() (interface{}, error) {
		if slot, ok := f.cache.Load(name); ok {
			return slot.(Pair).Conn, nil
		}
		slot, err := f.constructor(name)
		if err != nil {
			return nil, err
		}
		f.cache.Store(name, slot)
		return slot.Conn, nil
	})
	if err != nil {
		return nil, err
	}
	return conn, nil
}

// SubscribeReloadEventFrom subscribes to the reload events from dispatcher and then notifies the di
// factory to clear its cache and shutdown all connections gracefully.