API Application Insights 使用的良好实践
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【中文标题】API Application Insights 使用的良好实践【英文标题】:API Application Insights good practice to use 【发布时间】:2018-08-27 11:10:32 【问题描述】:我阅读了这份文档:https://docs.microsoft.com/en-us/azure/application-insights/app-insights-api-custom-events-metrics
有许多不同的 API 方法来跟踪异常、跟踪跟踪等。
我有一个 ASP.NET MVC 5 应用程序。 例如,我有以下控制器方法(由 ajax 调用):
[AjaxErrorHandling]
[HttpPost]
public async Task SyncDriverToVistracks(int DriverID)
if ([condition])
// some actions here
try
driver.VistrackId = await _vistracksService.AddNewDriverToVistrackAsync(domain);
await db.SaveChangesAsync();
catch (VistracksApiException api_ex)
// external service throws exception type VistracksApiException
throw new AjaxException("vistracksApiClient", api_ex.Response.Message);
catch (VistracksApiCommonException common_ex)
// external service throws exception type VistracksApiCommonException
throw new AjaxException("vistracksApiServer", "3MD HOS server is not available");
catch (Exception ex)
// something wrong at all
throw new AjaxException("General", ex.Message);
else
// condition is not valid
throw new AjaxException("General", "AccountId is not found");
如果出现问题,此方法会抛出 AjaxException(由 AjaxErrorHandling 捕获,然后返回一些 json 响应给客户端)。
现在我想添加遥测以记录、分析异常和观察客户端事件。
所以,我添加了以下内容:
[AjaxErrorHandling]
[HttpPost]
public async Task SyncDriverToVistracks(int DriverID)
telemetryClient.TrackEvent("Sync driver", new Dictionary<string, string> "ChangedBy", User.Identity.Name , "DriverID", DriverID.ToString() , null);
if ([condition])
// some actions here
try
driver.VistrackId = await _vistracksService.AddNewDriverToVistrackAsync(domain);
await db.SaveChangesAsync();
catch (VistracksApiException api_ex)
// external service throws exception type VistracksApiException
telemetryClient.TrackTrace("VistracksApiException", new Dictionary<string, string>
"ChangedBy", User.Identity.Name ,
"DriverID", DriverID.ToString() ,
"ResponseCode", api_ex.Response.Code.ToString() ,
"ResponseMessage", api_ex.Response.Message ,
"ResponseDescription", api_ex.Response.Description
);
telemetryClient.TrackException(api_ex);
throw new AjaxException("vistracksApiClient", api_ex.Response.Message);
catch (VistracksApiCommonException common_ex)
// external service throws exception type VistracksApiCommonException
telemetryClient.TrackTrace("VistracksApiCommonException", new Dictionary<string, string>
"ChangedBy", User.Identity.Name ,
"DriverID", DriverID.ToString() ,
"Message", common_ex.Message ,
);
telemetryClient.TrackException(common_ex);
throw new AjaxException("vistracksApiServer", "3MD HOS server is not available");
catch (Exception ex)
// something wrong at all
telemetryClient.TrackTrace("Exception", new Dictionary<string, string>
"ChangedBy", User.Identity.Name ,
"DriverID", DriverID.ToString() ,
"Message", ex.Message ,
);
telemetryClient.TrackException(ex);
throw new AjaxException("General", ex.Message);
else
telemetryClient.TrackTrace("ConditionWrong", new Dictionary<string, string>
"ChangedBy", User.Identity.Name ,
"DriverID", DriverID.ToString() ,
"Message", "AccountId is not found" ,
);
// condition is not valid
throw new AjaxException("General", "AccountId is not found");
通过以下行:
telemetryClient.TrackEvent("Sync driver", new Dictionary<string, string> "ChangedBy", User.Identity.Name , "DriverID", DriverID.ToString() , null);
我只是“记录”客户端事件,即调用该方法。仅用于统计。
在每个“catch”块中,我尝试使用不同的参数编写跟踪并写入异常:
telemetryClient.TrackTrace("trace name", new Dictionary<string, string>
"ChangedBy", User.Identity.Name ,
....
);
telemetryClient.TrackException(ex);
有必要吗?还是只需要跟踪异常?然后我会丢失不同的信息,比如谁尝试添加这些更改等...什么时候应该使用这些方法?
【问题讨论】:
您也可以跟踪自定义属性是否存在异常。因此,无需同时跟踪两者(除非您愿意)。 另外 Activity.Current.Tags 应该可以解决问题,但由于某种原因,它们对我不起作用。已打开github.com/Microsoft/ApplicationInsights-dotnet-server/issues/… 如果您的外部调用不是基于 HTTP 的,那么您可能希望将其包装在 this.telemetryClient.StartOperation您可以独立跟踪所有指标/异常/跟踪/事件。要使信息事件相互关联,请使用TelemetryContext
有必要吗?还是只需要跟踪异常?然后我输了 不同的信息,例如谁尝试添加这些更改等...当每个 这些方法应该用吗?
这仅取决于您的需求。如果您需要该信息 - 请发送。
【讨论】:
因此我询问最佳实践:)【参考方案2】:这是 2.5.1 AI SDK 的最佳实践。将突出显示即将发布的 AI SDK 版本中可能不需要的部分。
进行端到端跟踪的正确方法是依赖 .NET 框架中的新 Activity 类。在 AI 支持 Activity.Tags (https://github.com/Microsoft/ApplicationInsights-dotnet/issues/562) 之前,您需要使用 TelemetryInitializer 手动传播它们:
public class ActvityTagsTelemetryInitializer : ITelemetryInitializer
public void Initialize(ITelemetry telemetry)
Activity current = Activity.Current;
if (current == null)
current = (Activity)HttpContext.Current?.Items["__AspnetActivity__"];
while (current != null)
foreach (var tag in current.Tags)
if (!telemetry.Context.Properties.ContainsKey(tag.Key))
telemetry.Context.Properties.Add(tag.Key, tag.Value);
current = current.Parent;
然后在 ApplicationInsights.config 中注册:
<TelemetryInitializers>
...
<Add Type="<namespace>.ActvityTagsTelemetryInitializer, <assemblyname>"/>
</TelemetryInitializers>
然后你可以填充适当的标签:
[AjaxErrorHandling]
[HttpPost]
public async Task SyncDriverToVistracks(int DriverID)
Activity.Current.AddTag("DriverID", DriverID.ToString());
Activity.Current.AddTag("UserID", User.Identity.Name);
try
if ([condition])
// some actions here
try
// If below call is HTTP then no need to use StartOperation
using (telemetryClient.StartOperation<DependencyTelemetry>("AddNewDriverToVistrackAsync"))
driver.VistrackId = await _vistracksService.AddNewDriverToVistrackAsync(domain);
// If below call is HTTP then no need to use StartOperation
using (telemetryClient.StartOperation<DependencyTelemetry>("SaveChanges"))
await db.SaveChangesAsync();
catch (VistracksApiException api_ex)
// external service throws exception type VistracksApiException
throw new AjaxException("vistracksApiClient", api_ex.Response.Message);
catch (VistracksApiCommonException common_ex)
// external service throws exception type VistracksApiCommonException
throw new AjaxException("vistracksApiServer", "3MD HOS server is not available");
catch (Exception ex)
// something wrong at all
throw new AjaxException("General", ex.Message);
else
// condition is not valid
throw new AjaxException("General", "AccountId is not found");
catch (Exception ex)
// Upcoming 2.6 AI SDK will track exceptions for MVC apps automatically.
telemetryClient.TrackException(ex);
throw;
您应该有以下遥测数据:
-
收到的请求
传出请求(依赖项)
失败请求的例外情况
所有遥测数据都将带有 ChangedBy 和 DriverID 标记
【讨论】:
我们如何在 azure 函数中使用Activity
?
有人在 azure 函数中使用它吗?会喜欢一个例子以上是关于API Application Insights 使用的良好实践的主要内容,如果未能解决你的问题,请参考以下文章
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