服务发现
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# 网关和
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# 网关和服务发现
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## 构建和设计 API 网关
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@ -26,35 +26,71 @@ Ocelot 和 Yarp 是一个基于.NET 的开源 API 网关,它可以用于构建
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dotnet add package Yarp.ReverseProxy
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```
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## 使用 Aspire 服务发现
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```shell
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dotnet add package Microsoft.Extensions.ServiceDiscovery.Yarp
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```
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## 使用配置文件配置 Yarp
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```json
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{
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  "ReverseProxy": {
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    "Clusters": {
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      "cluster1": {
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        "Destinations": {
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          "destination1": {
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            "Address": "https://localhost:5001"
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          }
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        }
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    "Routes": {
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      "testserviceRoute": {
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        "ClusterId": "testServiceCluster",
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        "Match": {
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          "Path": "testservice/{**remainder}"
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        },
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        "Transforms": [
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          { "PathPattern": "{**remainder}" }
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        ]
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      }
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    },
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    "Routes": [
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      {
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        "RouteId": "route1",
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        "ClusterId": "cluster1",
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        "Match": {
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          "Host": "localhost",
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          "Path": "/api"
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    "Clusters": {
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      "testServiceCluster": {
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        "Destinations": {
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          "testServiceCluster/destination1": {
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            "Address": "http://identityservice"
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          }
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        }
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      }
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    }
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    ]
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  }
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}
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```
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## .NET 中的服务发现
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服务发现是一种用于发现和定位服务的机制,它可以帮助客户端找到服务的位置和地址。服务发现可以用于构建和设计微服务架构中的 API 网关,以便客户端可以通过 API 网关访问后端服务。
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## 使用服务发现
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https://learn.microsoft.com/zh-cn/dotnet/core/extensions/service-discovery
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```shell
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dotnet add package Microsoft.Extensions.ServiceDiscovery --prerelease
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```
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```csharp
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builder.Services.AddServiceDiscovery();
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builder.Services.ConfigureHttpClientDefaults(static http =>
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{
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    // Turn on service discovery by default
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    http.AddServiceDiscovery();
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});
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```
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```json
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{
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  "Services": {
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    "catalog": {
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      "https": [
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        "localhost:8080",
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        "10.46.24.90:80"
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      ]
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    }
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  }
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}
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```
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## 在反向代理中使用服务发现
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```shell
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dotnet add package Microsoft.Extensions.ServiceDiscovery.Yarp
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```
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