HealthCheckUI不显示像CosmosDB这样的依赖项的状态

Question

我有asp.net core 2.2项目，用于构建API。这些API依赖于其他一些服务，例如Azure CosmosDB，Azure ServiceBus，Azure存储服务。我有以下代码来实现HealthCheck：

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddCustomHealthChecks(Configuration);
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseHealthChecks("/healthcheck", new HealthCheckOptions{Predicate = _ => true, ResponseWriter = UIResponseWriter.WriteHealthCheckUIResponse});
    app.UseHealthChecksUI();
}

public static IServiceCollection AddCustomHealthChecks(this IServiceCollection services, IConfiguration configuration)
{
    var cosmosDBServiceEndPoint = configuration.GetValue<string>("CosmosDBEndpoint");
    var cosmosDBAuthKeyOrResourceToken = configuration.GetValue<string>("CosmosDBAccessKey");
    var cosmosDBConnectionString = $"AccountEndpoint={cosmosDBServiceEndPoint};AccountKey={cosmosDBAuthKeyOrResourceToken};";
    var hcBuilder = services.AddHealthChecks();
    hcBuilder.AddCheck("self", () => HealthCheckResult.Healthy()).AddCosmosDb(connectionString: cosmosDBConnectionString, name: "CosmosDB-check", failureStatus: HealthStatus.Degraded, tags: new string[]{"cosmosdb"});
    services.AddHealthChecksUI(setupSettings: setup =>
    {
        setup.AddHealthCheckEndpoint("Basic healthcheck", "http://localhost:63812/healthcheck");
    }

    );
    return services;
}

关于验证以下URL：

http://localhost:63812/healthcheck

结果：

{
  "status": "Healthy",
  "totalDuration": "00:00:00.0277870",
  "entries": {
    "self": {
      "data": {},
      "duration": "00:00:00.0000026",
      "status": "Healthy"
    },
    "cosmosDB-check": {
      "data": {},
      "duration": "00:00:00.0276920",
      "status": "Healthy"
    }
  }
}

但是在检查HealthCheckUI时，我没有看到CosmosDB作为仪表板上的依赖项：http://localhost:63812/healthchecks-ui#/healthchecks

谁能帮助我知道如何解决此问题？

Answer 1

如您提供的图片中的描述所示，似乎您使用的是3.0.x版本程序包。因此，如果您的项目是asp.net核心应用2.2，则需要使用AspNetCore.HealthChecks.UI 2.2.X而非3.0.X版本。

也可以更改

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    services.AddCustomHealthChecks(Configuration);
}

到

public void ConfigureServices(IServiceCollection services)
{
   services.AddCustomHealthChecks(Configuration);
}

有关更多详细信息，您可以参考如何使用Implement health checks in ASP.NET Core services。