Azure Functions - Application Insights - 自定义遥测 - EventSource 实例已存在

Question

我正在尝试按照Insights Preview 中的说明创建自定义遥测。我完全按照说明进行操作。但也许我配置错了。

我在local.settings.json 文件中设置了APPINSIGHTS_INSTRUMENTATIONKEY，它似乎工作正常。但是当我添加一个新的TelemetryClient 时，我开始收到那些重复的错误（如下）。它在函数被调用时发生。

我真的希望将来自 AF 的遥测数据发送到同一个 AI 仪表键，以便我可以一起查看。

我还取消了Microsoft.Extensions.Logging，因为我只想使用 AI，如果这有什么不同的话。

有人有什么建议吗？

见下文...

TIA

ERROR: Exception in Command Processing for EventSource Microsoft-ApplicationInsights-Core: An instance of EventSource with Guid 74af9f20-af6a-5582-9382-f21f674fb271 already exists.
ERROR: Exception in Command Processing for EventSource Microsoft-ApplicationInsights-Core: An instance of EventSource with Guid 74af9f20-af6a-5582-9382-f21f674fb271 already exists.
Microsoft.WindowsAzure.ServiceRuntime Critical: 102 : Unexpcted Exception During Runtime Startup:
System.TypeInitializationException: The type initializer for '<Module>' threw an exception. ---> <CrtImplementationDetails>.ModuleLoadException: The C++ module failed to load while attempting to initialize the default appdomain.
 ---> System.Runtime.InteropServices.COMException: Invalid operation. (Exception from HRESULT: 0x80131022)
   at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
   at <CrtImplementationDetails>.GetDefaultDomain()
   at <CrtImplementationDetails>.DoCallBackInDefaultDomain(IntPtr function, Void* cookie)
   at <CrtImplementationDetails>.LanguageSupport.InitializeDefaultAppDomain(LanguageSupport* )
   at <CrtImplementationDetails>.LanguageSupport._Initialize(LanguageSupport* )
   at <CrtImplementationDetails>.LanguageSupport.Initialize(LanguageSupport* )
   --- End of inner exception stack trace ---
   at <CrtImplementationDetails>.LanguageSupport.Initialize(LanguageSupport* )
   at .cctor()
   --- End of inner exception stack trace ---
   at Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.InitializeEnvironment()
   at Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment..cctor()
ERROR: Exception in Command Processing for EventSource Microsoft-ApplicationInsights-Data: An instance of EventSource with Guid a62adddb-6b4b-519d-7ba1-f983d81623e0 already exists.

Answer 1

为了简单起见，我重新开始了一个新的 AF 项目（和一杯酒）。

以下代码有效：

private static TelemetryConfiguration config = new TelemetryConfiguration { InstrumentationKey = System.Environment.GetEnvironmentVariable("APPINSIGHTS_INSTRUMENTATIONKEY", EnvironmentVariableTarget.Process)};
private static TelemetryClient telemetryClient = new TelemetryClient(config);

此代码（直接来自预览帖子）没有：

private static TelemetryClient telemetryClient = new TelemetryClient();
private static string key = TelemetryConfiguration.Active.InstrumentationKey = System.Environment.GetEnvironmentVariable("APPINSIGHTS_INSTRUMENTATIONKEY", EnvironmentVariableTarget.Process);

一个不幸的副作用是遥测不会自动显示在 VS2017 Application Insights 窗口中。您必须使用设置工具选择所需的 AI 存储库，然后才能看到它。几分钟后，但总比没有好。