Application Insights - 全球最低严重性级别筛选器？

Question

是否有一个地方可以设置日志写入的最低严重性？它也应该适用于通过TelemetryClient.TraceTelemetry 写的痕迹！有几个问题只涉及ILogger...

Answer 1

没有直接的方法。但是您可以使用telemetry processor 来确定可以记录哪个SeverityLevel。

例如，创建一个实现 ITelemetryProcessor 的类，如下所示：

public class MyCustomFilter : ITelemetryProcessor
{
    private ITelemetryProcessor Next { get; set; }

    // next will point to the next TelemetryProcessor in the chain.
    public MyCustomFilter(ITelemetryProcessor next)
    {
        this.Next = next;
    }

    public void Process(ITelemetry item)
    {
        TraceTelemetry traceTelemetry = item as TraceTelemetry;

        if (traceTelemetry != null)
        {
            //use this line of code to determine which SeverityLevel should be logged. In this example, only SeverityLevel is warning and up can be logged
            if (traceTelemetry.SeverityLevel < SeverityLevel.Warning) { return; }
        }

        this.Next.Process(item);
    }
}

然后在Startup.cs中注册（对于.net core web app）：

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllersWithViews();
        services.AddApplicationInsightsTelemetry();

        //register your custom TelemetryProcessor
        services.AddApplicationInsightsTelemetryProcessor<MyCustomFilter>();
    }