worker服务中的事件日志未发布到Azure Application Insight

Question

我正在构建一个Worker服务作为Windows服务..。我使用EventLog用于日志记录。我还想补充一点

ApplicationInsights来记录事件。我关注这篇文章https://docs.microsoft.com/en-us/azure/azure-monitor/app/worker-service，使用Nuget安装SDK，并按要求设置所有内容。这是我的program.cs配置。

public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)                
            .ConfigureServices((hostContext, services) =>
            {
                services.AddHostedService();
                services.AddApplicationInsightsTelemetryWorkerService();
                services.CustomeDependencyInjection();
            })
            .UseWindowsService()
            .ConfigureLogging(logging =>
            {
                logging.AddEventLog(eventLogSetting =>
                {
                    eventLogSetting.LogName = "MyTestEventLog";
                    eventLogSetting.SourceName = "MyTestEventApp";
                });
            });

下面是appsetting.json文件

{
  "ApplicationInsights": {
      "InstrumentationKey": "bd******-****-****-****-***********b"
  },
  Logging": {
    "LogLevel": {
    "Default": "Information",
    "Microsoft": "Information",
    "Microsoft.Hosting.Lifetime": "Information"
    },
    "EventLog": {
      "LogLevel": {
      "Default": "Information",
      "Microsoft": "Information",
      "Microsoft.Hosting.Lifetime": "Information"
      }
    }
  }
}

下面是一个日志记录示例，位于worker.cs文件

public Worker(ILogger logger, TelemetryClient tc)
{
        _logger = logger;
        this.tc = tc;
 }
 public Task StartAsync(CancellationToken cancellationToken)
 {
        this._logger.LogInformation("In Start");
        using (tc.StartOperation("Operation"))
        {
            /** 
                my service starting code 
            **/
            this._logger.LogInformation("Service is being started");
            tc.TrackEvent("Worker service starting operation completed.");
        }
        this._logger.LogInformation( "Service Started");
        return Task.CompletedTask;
 }

当我运行应用程序时，我可以看到一个customEvent..。我也能看到request事件。但是我在里面找不到任何东西trace我期望使用以下命令发送信息的位置_logger..。我检查了输出窗口，也没有发现针对_logger.LogInformation..。

我在这里做错了什么?如何使记录器信息可供ApplicationInsights什么？还是我找对地方了？

Answer 1

Application Insight默认为Warning作为日志级别。由于您使用level进行跟踪Information您需要使用appsettings.json文件配置应用程序洞察：

{
  "ApplicationInsights": {
      "InstrumentationKey": "bd******-****-****-****-***********b"
  },
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Information",
      "Microsoft.Hosting.Lifetime": "Information"
    },
    "ApplicationInsights": {
      "LogLevel": {
        "Default": "Information"
      }
    }
    "EventLog": {
        "LogLevel": {
        "Default": "Information",
        "Microsoft": "Information",
        "Microsoft.Hosting.Lifetime": "Information"
      }
    }
  }
}