可不可以在不修改源码的情况下集成nacos about feign.net HOT 2 CLOSED

using Feign.Discovery;
using Nacos;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Feign.Nacos.Demo
{
    public class NacosServiceDiscovery : IServiceDiscovery
    {

        public NacosServiceDiscovery(INacosNamingClient nacosNamingClient)
        {
            _nacosNamingClient = nacosNamingClient;
        }

        private readonly INacosNamingClient _nacosNamingClient;


        public IList<string> Services => throw new NotImplementedException();

        public IList<IServiceInstance> GetServiceInstances(string serviceId)
        {
            var result = _nacosNamingClient.ListInstancesAsync(new ListInstancesRequest
            {
                ServiceName = serviceId,
                HealthyOnly = true
            }).Result;

            return result.Hosts.Select(s => (IServiceInstance)new NacosServiceInstance(s)).ToList();
        }


        class NacosServiceInstance : IServiceInstance
        {
            public NacosServiceInstance(Host host)
            {
                _host = host;
            }

            Host _host;

            public string ServiceId => _host.ServiceName;

            public string Host => _host.Ip;

            public int Port => _host.Port;

            public Uri Uri => new Uri($"http://{_host.Ip}:{_host.Port}");
        }

    }
}

        var builder = services.AddFeignClients();

        builder.AddServiceDiscovery<NacosServiceDiscovery>();

using Feign.Discovery;
using Nacos;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Feign.Nacos.Demo
{
    public class TestServiceDiscovery : IServiceDiscovery
    {
        public IList<string> Services => throw new NotImplementedException();

        private readonly Nacos.V2.INacosNamingService _svc;
        public TestServiceDiscovery(Nacos.V2.INacosNamingService svc)
        {
            _svc = svc;
        }

        public IList<IServiceInstance> GetServiceInstances(string serviceId)
        {
            var instance = _svc.GetAllInstances(serviceId, "DEFAULT_GROUP").Result;
            return instance.Select(s => (IServiceInstance)new NacosServiceInstance(s)).ToList();
        }
    }

    class NacosServiceInstance : IServiceInstance
    {
        public NacosServiceInstance(Instance instance)
        {
            _instance = instance;
        }

        Instance _instance;

        public string ServiceId => _instance.ServiceName;

        public string Host => _instance.Ip;

        public int Port => _instance.Port;

        public Uri Uri => new Uri($"http://{_instance.Ip}:{_instance.Port}");
    }
}