NETCORE - Consul 注册

1. 部署Consul服务，参考：https://www.cnblogs.com/1285026182YUAN/p/13847705.html

2. 创建NetCore Web Api 项目，框架：net5：NETCORE.ConSul

3. 引用nuget包

4. 修改配置文件

  "ConsulSetting": {
    "ServiceName": "TestService",
    "ServiceIP": "10.10.50.99", //服务地址
    "ServiceHealthCheck": "/healthcheck",
    "ServicePort": "5000",//服务端口
    "ConsulAddress": "http://192.168.91.128:8500/", //consul地址
    "ConsulCenter": "dc1"
  }

5. 增加扩展类

using Consul;
using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

public static class ConsulExtensions
{
    public static IApplicationBuilder RegisterConsul(this IApplicationBuilder app, IConfiguration configuration)//, IHostApplicationLifetime lifetime)
    {
        var consulClient = new ConsulClient(c =>
        {
            c.Address = new Uri(configuration["ConsulSetting:ConsulAddress"]);
        });

        var registration = new AgentServiceRegistration()
        {
            ID = Guid.NewGuid().ToString(),//服务实例唯一标识
            Name = configuration["ConsulSetting:ServiceName"],//服务名
            Address = configuration["ConsulSetting:ServiceIP"], //服务IP
            Port = int.Parse(configuration["ConsulSetting:ServicePort"]),//服务端口 因为要运行多个实例，端口不能在appsettings.json里配置，在docker容器运行时传入
            Check = new AgentServiceCheck()
            {
                DeregisterCriticalServiceAfter = TimeSpan.FromSeconds(5),//服务启动多久后注册
                Interval = TimeSpan.FromSeconds(10),//健康检查时间间隔
                HTTP = $"http://{configuration["ConsulSetting:ServiceIP"]}:{configuration["ConsulSetting:ServicePort"]}{configuration["ConsulSetting:ServiceHealthCheck"]}",//健康检查地址
                Timeout = TimeSpan.FromSeconds(5)//超时时间
            }
        };

        //服务注册
        consulClient.Agent.ServiceRegister(registration).Wait();

        ////应用程序终止时，手动取消注册
        //lifetime.ApplicationStopping.Register(() =>
        //{
        //    consulClient.Agent.ServiceDeregister(registration.ID).Wait();
        //});

        return app;
    }
}

6. 在Starup里面注册Consul服务

        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "NETCORE.ConSul v1"));
            }

            app.UseHttpsRedirection();

            app.UseRouting();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllers();
            });

            // Consul注册
            app.RegisterConsul(Configuration);
        }

7. 如调试模式，注意修改IP地址

8. 增加 webapi 控制器：BookController.cs

接口访问地址：https://10.10.50.99:5001/api/Book/GetInfo

namespace NETCORE.ConSul.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class BookController : ControllerBase
    {
        [Route("GetInfo")]
        [HttpGet]
        public IActionResult GetInfo()
        {
            Task.Run(() => { Console.WriteLine("name:onn , Host:{0}", HttpContext.Request.Host.Value); });
            return Ok("ok , task running go !");
        }
    }
}

9. 增加 webapi 控制器：HealthController.cs

namespace NETCORE.ConSul.Controllers
{
    [Route("api/[controller]")]
    [ApiController]
    public class HealthController : ControllerBase
    {
        [HttpGet]
        public IActionResult Get() => Ok("ok");
    }
}