selector

type Filter func([]*registry.Service) []*registry.Service

type Next func() (*registry.Node, error)

type Option func(*Options)

type Options struct {
	// 服务注册表
	Registry registry.Registry
	// 节点选择策略引擎
	Strategy Strategy
	// 扩展配置，可以添加自定义选项
	Context context.Context
}

type SelectOption func(*SelectOptions)

type SelectOptions struct {
	// 节点过滤器列表
	Filters []Filter
	// 节点选择策略引擎
	Strategy Strategy
	// 扩展配置，可以添加自定义选项
	Context context.Context
}

type Selector interface {
	Init(opts ...Option) error
	Options() Options
	Select(service string, opts ...SelectOption) (Next, error)
	Mark(service string, node *registry.Node, err error)
	Reset(service string)
	Close() error
	String() string
}

type Strategy func([]*registry.Service) Next