package common import ( "context" "reflect" "github.com/v2fly/v2ray-core/v4/common/registry" ) // ConfigCreator is a function to create an object by a config. type ConfigCreator func(ctx context.Context, config interface{}) (interface{}, error) var typeCreatorRegistry = make(map[reflect.Type]ConfigCreator) // RegisterConfig registers a global config creator. The config can be nil but must have a type. func RegisterConfig(config interface{}, configCreator ConfigCreator) error { configType := reflect.TypeOf(config) if _, found := typeCreatorRegistry[configType]; found { return newError(configType.Name() + " is already registered").AtError() } typeCreatorRegistry[configType] = configCreator registry.RegisterImplementation(config, nil) return nil } // CreateObject creates an object by its config. The config type must be registered through RegisterConfig(). func CreateObject(ctx context.Context, config interface{}) (interface{}, error) { configType := reflect.TypeOf(config) creator, found := typeCreatorRegistry[configType] if !found { return nil, newError(configType.String() + " is not registered").AtError() } return creator(ctx, config) }