这个问题和我想知道的很相似。我在配置了 Application Insights 的 Azure 云服务上有一个 Web api 服务。在自动生成的请求信息门户上,我想将作为请求一部分的自定义 http 标头添加到与每个请求一起记录的信息中。问题是我该怎么做?
我尝试使用如下所示的遥测初始化程序,但这失败了(因为我在门户上看不到信息)。我还在 global.asax 中添加了这个
TelemetryConfiguration.Active.TelemetryInitializers.Add(propertyTelemetryInitializer);
public class PropertyTelemetryInitializer : ITelemetryInitializer
{
private readonly HttpContext httpContext;
public PropertyTelemetryInitializer(HttpContext httpContext)
{
this.httpContext = httpContext;
}
public void Initialize(ITelemetry telemetry)
{
this.AddTelemetryContextPropertFromContextHeader(telemetry, "xyz");
this.AddTelemetryContextPropertFromContextHeader(telemetry, "abc");
this.AddTelemetryContextPropertFromContextHeader(telemetry, "123");
}
private void AddTelemetryContextPropertFromContextHeader(ITelemetry telemetry, string headerKey)
{
var requestTelemetry = telemetry as RequestTelemetry;
telemetry.Context.Properties[headerKey] = this.httpContext.Request.Headers[headerKey] ?? string.Empty;
telemetry.Context.Properties[headerKey] = this.httpContext.Request.Headers[headerKey] ?? string.Empty;
}
}
还有一种方法可以从控制器方法本身做到这一点吗?类似于以下内容(注意:以下内容不起作用)?
[Route("api/Something")]
[HttpGet]
[ResponseType(typeof(Something))]
public async Task<Something> GetSomething()
{
var requestTelemetry = new RequestTelemetry();
this.AddCustomHeadersToRequestTelemetry(requestTelemetry);
var result = await this.Service.GetSomethingAsync();
requestTelemetry.Properties["result"] = result.ToString();
return TypeMapper.Map<Model.Something, Something>(result);
}
/// <summary>
/// Adds the custom headers to request telemetry.
/// </summary>
/// <param name="controller">The controller.</param>
/// <param name="requestTelemetry">The request telemetry.</param>
public static void AddCustomHeadersToRequestTelemetry(this ApiController controller, RequestTelemetry requestTelemetry)
{
if (controller == null)
{
throw new ArgumentNullException("controller");
}
if (requestTelemetry == null)
{
throw new ArgumentNullException("requestTelemetry");
}
requestTelemetry.Context.Properties["abc"] = controller.Request.GetABCFromHeader();
requestTelemetry.Context.Properties["xyz"] = controller.Request.GetXYZFromHeader();
requestTelemetry.Context.Properties["123"] = controller.Request.Get123FromHeader();
}