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web api+azure应用洞察将数据从actionfilter传递到itelemetryprocessor

actionfilterattribute azure-application-insights asp.net-web-api azure c#

mickl · 技术社区 · 6 年前

我想自定义我的应用程序洞察日志记录行为。所以我想在我的 动作过滤器 然后把旗子读进去 ITelemetryprocessor公司 是的。

public class MyCustomFilterAttribute: ActionFilterAttribute
{
    public override void OnActionExecuting(HttpActionContext filterContext)
    {
        //perform some logic and set the flag here
    }
}

然后

public class TelemetryFilter : ITelemetryProcessor
{
    public void Process(ITelemetry item)
    {
        var request = item as RequestTelemetry;
        //read the flag here and terminate processing
    }
}

有可能吗?这两种类型之间有共享的tempdata吗?我想避免像设置临时标题之类的黑客攻击。提前谢谢。

2 回复 | 直到 6 年前

Jayendran 6 年前

我不确定这是否有用。但我希望会。

使用 Activity.Current

    public void Initialize(ITelemetry telemetry)
    {
        Activity current = Activity.Current;

        if (current == null)
        {
            current = (Activity)HttpContext.Current?.Items["__AspnetActivity__"];
//put your code here
        }
}

参考这个 SO

cijothomas 6 年前

在可以访问httpcontext的地方编写一个遥测初始化器。

//遥测初始化器

public void Initialize(ITelemetry telemetry)
    {
     var ctx = HttpContext.Current; // Telemetry Initialzer runs in same thread as the request.
     var request = item as RequestTelemetry;
     req.Properties.Add("MyActionFilter", "MyActionFilterValue")
     ...
    }

//遥测处理器

public void Process(ITelemetry item)
    {
        var request = item as RequestTelemetry;
        //read the flag here and terminate processing
        if(req.Properties["MyActionFilter"] == "somthing")
        {
        ...
        }
    }

https://docs.microsoft.com/en-us/azure/application-insights/app-insights-api-filtering-sampling#itelemetryprocessor-and-itelemetryinitializer

对于ASP.NET核心,注入 IHttpContextAccessor 到遥测初始化器构造函数可以获取上下文,如下所示: https://github.com/Microsoft/ApplicationInsights-aspnetcore/blob/develop/src/Microsoft.ApplicationInsights.AspNetCore/TelemetryInitializers/TelemetryInitializerBase.cs