步驟1：為項目添加consul依賴
步驟2：在項目中配置consul，具體如下
配置文件中添加如下
"Service": {
"Name": "homepage",
"IP": "172.17.0.12",
"Port": "8300"
},
"Consul": {
"IP": "172.17.0.12",
"Port": "8500"
}
補全startup.cs中的如下方法：
public void Configure(IApplicationBuilder app, IHostingEnvironment env, IApplicationLifetime lifetime)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseCors(x => x
.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader()
.AllowCredentials());
#region register this service
ConsulService consulService = new ConsulService()
{
IP = Configuration["Consul:IP"],
Port = Convert.ToInt32(Configuration["Consul:Port"])
};
HealthService healthService = new HealthService()
{
IP = Configuration["Service:IP"],
Port = Convert.ToInt32(Configuration["Service:Port"]),
Name = Configuration["Service:Name"],
};
app.RegisterConsul(lifetime, healthService, consulService);
#endregion
app.UseMvc();
}
添加三個類：
consul註冊類：
using Consul;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Options;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace MaskBackground.Extensions
{
public static class ConsulBuilderExtensions
{
// 服務註冊
public static IApplicationBuilder RegisterConsul(this IApplicationBuilder app, IApplicationLifetime lifetime, HealthService healthService, ConsulService consulService)
{
var consulClient = new ConsulClient(x => x.Address = new Uri($"http://{consulService.IP}:{consulService.Port}"));//請求註冊的 Consul 地址
var httpCheck = new AgentServiceCheck()
{
DeregisterCriticalServiceAfter = TimeSpan.FromSeconds(5),//服務啓動多久後註冊
Interval = TimeSpan.FromSeconds(10),//健康檢查時間間隔，或者稱爲心跳間隔
//HTTP = "http://61.174.171.58:5556/api/health/status",
HTTP = $"http://{healthService.IP}:{healthService.Port}/api/health/status",//健康檢查地址
Timeout = TimeSpan.FromSeconds(5)
};
// Register service with consul
var registration = new AgentServiceRegistration()
{
Checks = new[] { httpCheck },
ID = healthService.Name + "_" + healthService.Port,
Name = healthService.Name,
Address = healthService.IP,
Port = healthService.Port,
Tags = new[] { $"urlprefix-/{healthService.Name}" }//添加 urlprefix-/servicename 格式的 tag 標籤，以便 Fabio 識別
};
consulClient.Agent.ServiceRegister(registration).Wait();//服務啓動時註冊，內部實現其實就是使用 Consul API 進行註冊（HttpClient發起）
lifetime.ApplicationStopping.Register(() =>
{
consulClient.Agent.ServiceDeregister(registration.ID).Wait();//服務停止時取消註冊
});
return app;
}
}
}
參數類：
namespace MaskBackground.Extensions
{
public class ConsulService
{
public string IP { get; set; }
public int Port { get; set; }
}
}
namespace MaskBackground.Extensions
{
public class HealthService
{
public string Name { get; set; }
public string IP { get; set; }
public int Port { get; set; }
}
}
心跳檢測方法
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
namespace HomeBg.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class HealthController : ControllerBase
{
[AllowAnonymous]
[HttpGet("status")]
public IActionResult Status() => Ok(new {Message = $"OK",DateTime = DateTime.Now});
}
}
步驟3：在項目主配置文件中配置網關
"ReRouteOptions": {
"DownstreamPathTemplate": "/api/{url}",
"UpstreamPathTemplate": "/api/homepage/{url}",
"ServiceName": "homepage",
"UseServiceDiscovery": true,
"DownstreamScheme": "http",
"UpstreamHttpMethod": [ "Get", "Post" ],
"LoadBalancer": "LeastConnection",
"ReRouteIsCaseSensitive": false,
"Priority": 9
}
步驟4：在consul中建立網關鍵值對
reroutes-後面的為註冊到consul的服務名稱。寫入如下配置。
[{"DownstreamPathTemplate":"/api/{url}","DownstreamScheme":"http","UpstreamPathTemplate":"/api/homepage/{url}","UpstreamHttpMethod":["Get","Post"],"ServiceName":"homepage","LoadBalancer":"LeastConnection","UseServiceDiscovery":true,"ReRouteIsCaseSensitive":false,"Priority":9}]
步驟5：重啓網關