c# - 在 Controller 级别将自定义属性添加到遥测请求

Question

我正在尝试为每条路线的遥测请求添加特定属性。经过一番挖掘，我发现我可以通过实现 ITelemetryInitializer 创建自己的自定义 TelemetryInitializer。通过这样做，我成功地将全局属性添加到请求中。但是，我仍然需要在 Controller 级别添加特定属性。您知道我该如何实现这一目标吗？

我尝试将 TelemetryClient 注入(inject) Controller ，但如果我使用它，属性将在请求之间共享。

这就是我尝试登录 Controller 的方式:

private TelemetryClient telemetryClient;

public ValueController(TelemetryClient telemetryClient)
{
    this.telemetryClient = telemetryClient;
}

[HttpGet]
public async Task<IActionResult> RouteOne([FromQuery(Name = "param1")]string param1, [FromQuery(Name = "param2")]string param2)
{                     
      telemetryClient.Context.GlobalProperties["param1"] = param1;
      telemetryClient.Context.GlobalProperties["param2"] = param2;
}

[HttpGet]
public async Task<IActionResult> RouteTwo([FromQuery(Name = "param3")]string param3, [FromQuery(Name = "param4")]string param4)
{                     
      telemetryClient.Context.GlobalProperties["param3"] = param3;
      telemetryClient.Context.GlobalProperties["param4"] = param4;
}

这是 ITelemetryInitializer 的实现:

public class CustomPropertiesTelemetryInitializer : ITelemetryInitializer
{
    private readonly IHttpContextAccessor httpContextAccessor;

    public CustomPropertiesTelemetryInitializer(IHttpContextAccessor httpContextAccessor)
    {
        this.httpContextAccessor = httpContextAccessor;
    }

    public void Initialize(ITelemetry telemetry)
    {
        telemetry.Context.GlobalProperties["RequestId"] = httpContextAccessor.HttpContext.GetProperty("requestId");
        telemetry.Context.GlobalProperties["Ip"] = httpContextAccessor.HttpContext?.Connection.RemoteIpAddress.ToString();
        telemetry.Context.GlobalProperties["RoutePath"] = httpContextAccessor.HttpContext?.Request.Path;           
    }
}

Answer 1

如果您添加的属性总是类似于“paramxxx”，那么有一个解决方法(但它确实不是很优雅)。

在 Controller 构造函数中，检查 GlobalProperties 是否包含类似“paramxxx”的键:

public ValueController(TelemetryClient telemetryClient)
{
    this.telemetryClient = telemetryClient;
    var props = this.telemetryClient.Context.GlobalProperties;
            foreach (var p in props)
            {
                if (p.Key.Contains("param"))
                {
                    props.Remove(p.Key);
                }
            }
}