package registry

import (
	"context"
	"io"
)

type Registry interface {
	Register(ctx context.Context, si ServiceInstance) error
	UnRegister(ctx context.Context, si ServiceInstance) error

	ListService(ctx context.Context, serviceName string) ([]ServiceInstance, error)

	Subscribe(serviceName string) (<-chan Event, error)

	io.Closer
}

type ServiceInstance struct {
	Name   string
	Addr   string
	Weight uint32
	Group  string
}

type Event struct {
}