Merge pull request #85908 from mrbullwinkle/mrb_08_19_2019_netcore_endpoint_mod

update app insights code samples

Author: PRMerger9

articles/azure-government/documentation-government-services-monitoringandmanagement.md

@@ -208,7 +208,7 @@ In order to send data from Application Insights to the Azure Government region,
 </ApplicationInsights>
 ```
 
-### .NET Core
+### ASP.NET Core
 
 Modify the appsettings.json file in your project as follows to adjust the main endpoint:
 
@@ -224,18 +224,72 @@ Modify the appsettings.json file in your project as follows to adjust the main e
 The values for Live Metrics and the Profile Query Endpoint can only be set via code. To override the default values for all endpoint values via code, make the following changes in the `ConfigureServices` method of the `Startup.cs` file:
 
 ```csharp
+using Microsoft.ApplicationInsights.Extensibility;
 using Microsoft.ApplicationInsights.Extensibility.Implementation.ApplicationId;
-using Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.QuickPulse; //place at top of Startup.cs file
+using Microsoft.ApplicationInsights.Extensibility.PerfCounterCollector.QuickPulse;
+using Microsoft.ApplicationInsights.Channel;
+using Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel; //place at top of Startup.cs file
 
    services.ConfigureTelemetryModule<QuickPulseTelemetryModule>((module, o) => module.QuickPulseServiceEndpoint="https://quickpulse.applicationinsights.us/QuickPulseService.svc");
 
-   services.AddSingleton(new ApplicationInsightsApplicationIdProvider() { ProfileQueryEndpoint = "https://dc.applicationinsights.us/api/profiles/{0}/appId" }); 
+   services.AddSingleton<IApplicationIdProvider, ApplicationInsightsApplicationIdProvider>(_ => new ApplicationInsightsApplicationIdProvider() { ProfileQueryEndpoint = "https://dc.applicationinsights.us/api/profiles/{0}/appId" });
 
-   services.AddSingleton<ITelemetryChannel>(new ServerTelemetryChannel() { EndpointAddress = "https://dc.applicationinsights.us/v2/track" });
+   services.AddSingleton<ITelemetryChannel>(_ => new ServerTelemetryChannel() { EndpointAddress = "https://dc.applicationinsights.us/v2/track" });
 
     //place in ConfigureServices method. If present, place this prior to   services.AddApplicationInsightsTelemetry("instrumentation key");
 ```
 
+### Azure Functions
+
+Please install following packages into your Function project:
+
+- Microsoft.ApplicationInsights version 2.10.0
+- Microsoft.ApplicationInsights.PerfCounterCollector version 2.10.0
+- Microsoft.ApplicationInsights.WindowsServer.TelemetryChannel version 2.10.0
+
+And also add (or modify) the startup code for your Function application:
+
+```csharp
+[assembly: FunctionsStartup(typeof(Example.Startup))]
+namespace Example
+{
+  class Startup : FunctionsStartup
+  {
+      public override void Configure(IFunctionsHostBuilder builder)
+      {
+          var quickPulseFactory = builder.Services.FirstOrDefault(sd => sd.ServiceType == typeof(ITelemetryModule) && 
+                                               sd.ImplementationType == typeof(QuickPulseTelemetryModule));
+          if (quickPulseFactory != null)
+          {
+              builder.Services.Remove(quickPulseFactory);
+          }
+
+          var appIdFactory = builder.Services.FirstOrDefault(sd => sd.ServiceType == typeof(IApplicationIdProvider));
+          if (appIdFactory != null)
+          {
+              builder.Services.Remove(appIdFactory);
+          }
+
+          var channelFactory = builder.Services.FirstOrDefault(sd => sd.ServiceType == typeof(ITelemetryChannel));
+          if (channelFactory != null)
+          {
+              builder.Services.Remove(channelFactory);
+          }
+
+          builder.Services.AddSingleton<ITelemetryModule, QuickPulseTelemetryModule>(_ =>
+              new QuickPulseTelemetryModule
+              {
+                  QuickPulseServiceEndpoint = "https://quickpulse.applicationinsights.us/QuickPulseService.svc"
+              });
+
+          builder.Services.AddSingleton<IApplicationIdProvider, ApplicationInsightsApplicationIdProvider>(_ => new ApplicationInsightsApplicationIdProvider() { ProfileQueryEndpoint = "https://dc.applicationinsights.us/api/profiles/{0}/appId" });
+
+          builder.Services.AddSingleton<ITelemetryChannel>(_ => new ServerTelemetryChannel() { EndpointAddress = "https://dc.applicationinsights.us/v2/track" });
+      }
+  }
+}
+```
+
 ### Java
 
 Modify the applicationinsights.xml file to change the default endpoint address.