net6 对接Nacos

服务发现和服务健康监测

Nacos 支持基于 DNS 和基于 RPC 的服务发现。服务提供者使用 原生SDK、OpenAPI、或一个独立的Agent TODO注册 Service 后，服务消费者可以使用DNS TODO 或HTTP&API查找和发现服务。

部署Nacos

1、搭建Nacos注册中心

1. 下载Nacos[https://github.com/alibaba/nacos/releases]

2. 解压后配置持久化

3. 

4. 创建一个数据库nacos_config,并执行红色框内的2个Sql脚本

   1. 修改配置文件application.properties,主要配置连接db

   ```
   ### Count of DB:
   db.num=1

   ### Connect URL of DB:
   db.url.0=jdbc:mysql://127.0.0.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=PRC
   db.user.0=nacos
   db.password.0=nacos
   ```

5. 1. 进入nacos/bin目录下，输入cmd，执行startup -m standalone启动

   2. 通过http://localhost:8848/nacos验证，输入账号：nacos和密码：nacos

NET6接入Nacos

Nacos添加配置文件

{
    "nacos": {
    "ServerAddresses": [ "http://localhost:8848" ],
    "DefaultTimeOut": 15000,
    "Namespace": "01786d05-61ed-4d81-9a31-698faf51aa96", // Please set the value of Namespace ID !!!!!!!!
    "ListenInterval": 1000,
    "ServiceName": "UserService",
    "GroupName": "DEFAULT_GROUP",
    "ClusterName": "DEFAULT",
    "RegisterEnabled": true,
    "InstanceEnabled": true,
    "Ephemeral": true,
    "ConfigUseRpc": true,
    "NamingUseRpc": true,
    "LBStrategy": "WeightRoundRobin" //WeightRandom WeightRoundRobin
  }
}

添加Nacos依赖

<PackageReference Include="nacos-sdk-csharp.AspNetCore" Version="1.3.1" />
<PackageReference Include="nacos-sdk-csharp.Extensions.Configuration" Version="1.3.1" />

修改appsettings.json文件

// 注册服务到Nacos
builder.Services.AddNacosAspNet(builder.Configuration); //默认节点Nacos
// 添加配置中心
builder.Host.ConfigureAppConfiguration((context, builder) =>
{
    var config = builder.Build();
    builder.AddNacosV2Configuration(config.GetSection("NacosConfig"));
});

整合到Ocelot

引入依赖

<PackageReference Include="nacos-sdk-csharp.AspNetCore" Version="1.3.1" />
<PackageReference Include="nacos-sdk-csharp.Extensions.Configuration" Version="1.3.1" />
<PackageReference Include="Ocelot.Provider.Nacos" Version="1.2.2" />

修改配置文件

{
  "NacosConfig": {
    "Listeners": [
      {
        "Optional": false,
        "DataId": "GatewayConfig",
        "Group": "DEFAULT_GROUP"
      }
    ],
    "Optional": false,
    "Namespace": "MiscroService",
    "ServerAddresses": [ "http://192.168.3.102:8848/" ]
  }
}

修改Program.cs文件

// 添加Ocelot对应Nacos扩展
builder.Services.AddOcelot().AddNacosDiscovery();

// 添加配置中心
builder.Host.ConfigureAppConfiguration((context, builder) =>
{
    var config = builder.Build();
    builder.AddNacosV2Configuration(config.GetSection("NacosConfig"));
});

Nacos添加配置文件

{
  "Routes": [
    {
      "UpstreamPathTemplate": "/microservice/{url}",
      "UpstreamHttpMethod": [ "Get", "Post" ],
      "DownstreamPathTemplate": "/api/{url}",
      "DownstreamScheme": "http",
      "UseServiceDiscovery": true,
      "ServiceName": "OrderService",
      "LoadBalancerOptions": {
        "Type": "RoundRobin"
      }
    }
  ],
  "GlobalConfiguration": {
    "ServiceDiscoveryProvider": {
      "Type": "Nacos"
    }
  },
  "nacos": {
    "ServerAddresses": [ "http://192.168.3.102:8848" ],
    "DefaultTimeOut": 15000,
    "Namespace": "MiscroService",
    "ListenInterval": 1500,
    "ServiceName": "Gateway",
    "GroupName": "DEFAULT_GROUP",
    "ClusterName": "DEFAULT",
    "RegisterEnabled": true,
    "InstanceEnabled": true,
    "ConfigUseRpc": true,
    "NamingUseRpc": true,
    "Ephemeral": true,
    "LBStrategy": "WeightRoundRobin"
  }
}

测试是否读取OrderService实例