discovery

type Hub interface {
	Register(ctx context.Context, info ServiceInfo) error
	Load(ctx context.Context) ([]ServiceInfo, error)
}

type Middleware[Service service.Service] struct {
	InfoProvider  func(ctx context.Context, srvc Service) (map[string]any, error)
	Events        *event.Broker
	RequestCodec  codec.Codec[Request, []byte]
	ResponseCodec codec.Codec[Response, []byte]
}

type Poller struct {
	Hub           Hub
	Events        *event.Broker
	RequestCodec  codec.Codec[Request, []byte]
	ResponseCodec codec.Codec[Response, []byte]
	Interval      time.Duration

	service.Core
}

type Request struct {
	ID string
}

type Responder[Service service.Service] struct {
	Service       Service
	InfoProvider  func(ctx context.Context, srvc Service) (map[string]any, error)
	Events        *event.Broker
	RequestCodec  codec.Codec[Request, []byte]
	ResponseCodec codec.Codec[Response, []byte]
}

type Response struct {
	RequestID   string
	ServiceInfo ServiceInfo
}

type ServiceInfo struct {
	ID     string
	Name   string
	Info   map[string]any
	Status map[string]any
}