Consume WebJobs diagnostics for Application Insights flushing issues (#8998)

* Subscribe to flushing issue messages from WebJobs.Logging.ApplicationInsights

* Update release_notes.md

* Add the AzureFunctions feed as a NuGet package source (#9167)

* Add AzureFunctions as a package source

* Correct view to be staging only

* Update WebJobs.Logging.ApplicationInsights package

Author: michaelpeng36

NuGet.config

@@ -6,6 +6,7 @@
     <add key="azure_app_service_staging" value="https://www.myget.org/F/azure-appservice-staging/api/v2" />
     <add key="azure-appservice-test" value="https://azfunc.pkgs.visualstudio.com/e6a70c92-4128-439f-8012-382fe78d6396/_packaging/azure-appservice-test%40Local/nuget/v3/index.json" />
     <add key="Microsoft.Azure.Functions.PowerShellWorker" value="https://azfunc.pkgs.visualstudio.com/e6a70c92-4128-439f-8012-382fe78d6396/_packaging/Microsoft.Azure.Functions.PowerShellWorker/nuget/v3/index.json" />
+    <add key="AzureFunctions@staging" value="https://azfunc.pkgs.visualstudio.com/e6a70c92-4128-439f-8012-382fe78d6396/_packaging/AzureFunctions%40staging/nuget/v3/index.json" />
     <add key="AzureFunctionsRelease" value="https://azfunc.pkgs.visualstudio.com/e6a70c92-4128-439f-8012-382fe78d6396/_packaging/AzureFunctionsRelease/nuget/v3/index.json" />
     <add key="AzureFunctionsPreRelease" value="https://azfunc.pkgs.visualstudio.com/e6a70c92-4128-439f-8012-382fe78d6396/_packaging/AzureFunctionsPreRelease/nuget/v3/index.json" />
     <!-- dotnet-tools is required for Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.XUnit -->

release_notes.md

@@ -3,6 +3,8 @@
 <!-- Please add your release notes in the following format:
 - My change description (#PR)
 -->
+
+- Consume diagnostic events raised by the WebJobs SDK for Application Insights flushing issues: see [PR](https://github.com/Azure/azure-webjobs-sdk/pull/2939)
 - Update Python Worker Version to [4.11.0](https://github.com/Azure/azure-functions-python-worker/releases/tag/4.11.0)
 - Update Java Worker Version to [2.10.0](https://github.com/Azure/azure-functions-java-worker/releases/tag/2.10.0)
 - Update PowerShell Worker 7.2 to 4.0.2719 [Release Note](https://github.com/Azure/azure-functions-powershell-worker/releases/tag/v4.0.2719)

src/WebJobs.Script.WebHost/Diagnostics/DiagnosticListenerService.cs

@@ -6,6 +6,7 @@
 using System.Diagnostics;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.Azure.WebJobs.Logging.ApplicationInsights;
 using Microsoft.Azure.WebJobs.Script.Config;
 using Microsoft.Azure.WebJobs.Script.Diagnostics;
 using Microsoft.Extensions.Hosting;
@@ -47,7 +48,8 @@ private void SubscribeListeners()
 
             _allListenersSubscription = DiagnosticListener.AllListeners.Subscribe(delegate (DiagnosticListener listener)
             {
-                if (listener.Name.StartsWith(ScriptConstants.HostDiagnosticSourcePrefix))
+                if (listener.Name.StartsWith(ScriptConstants.HostDiagnosticSourcePrefix)
+                    || listener.Name.StartsWith(ApplicationInsightsDiagnosticConstants.ApplicationInsightsDiagnosticSourcePrefix))
                 {
                     lock (_listenerSubscriptions)
                     {
@@ -63,7 +65,7 @@ private void SubscribeListeners()
                             _listenerSubscriptions.Add(listener.Name, listenerSubscription);
                         }
 
-                        _logger.LogInformation("Subscribed to host diagnostic source '{sourceName}'", listener.Name);
+                        _logger.LogInformation("Subscribed to diagnostic source '{sourceName}'", listener.Name);
                     }
                 }
             });

src/WebJobs.Script/WebJobs.Script.csproj

@@ -66,7 +66,7 @@
     <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Http" Version="3.2.0" />
     <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Timers.Storage" Version="1.0.0-beta.1" />
     <PackageReference Include="Microsoft.Azure.WebJobs.Script.Abstractions" Version="1.0.4-preview" />
-    <PackageReference Include="Microsoft.Azure.WebJobs.Logging.ApplicationInsights" Version="3.0.34" />
+    <PackageReference Include="Microsoft.Azure.WebJobs.Logging.ApplicationInsights" Version="3.0.35" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="3.3.1" />
     <PackageReference Include="Microsoft.Extensions.Logging.Console" Version="6.0.0" />
     <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="6.0.0" />