Add telemetry reporting (#6873)

eng/Versions.props

@@ -110,6 +110,7 @@
     <MicrosoftVisualStudioInteropPackageVersion>$(MicrosoftVisualStudioShellPackagesVersion)</MicrosoftVisualStudioInteropPackageVersion>
     <MicrosoftInternalVisualStudioInteropPackageVersion>$(MicrosoftVisualStudioShellPackagesVersion)</MicrosoftInternalVisualStudioInteropPackageVersion>
     <MicrosoftVisualStudioRpcContractsPackageVersion>17.3.3-alpha</MicrosoftVisualStudioRpcContractsPackageVersion>
+    <MicrosoftVisualStudioTelemetryVersion>16.4.137</MicrosoftVisualStudioTelemetryVersion>
     <MicrosoftVisualStudioTextDataPackageVersion>$(MicrosoftVisualStudioPackagesVersion)</MicrosoftVisualStudioTextDataPackageVersion>
     <MicrosoftVisualStudioTextImplementationPackageVersion>$(MicrosoftVisualStudioPackagesVersion)</MicrosoftVisualStudioTextImplementationPackageVersion>
     <MicrosoftVisualStudioTextLogicPackageVersion>$(MicrosoftVisualStudioPackagesVersion)</MicrosoftVisualStudioTextLogicPackageVersion>

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/Microsoft.AspNetCore.Razor.LanguageServer.Common.csproj

@@ -8,9 +8,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.Extensions.Tooling.Internal" Version="$(MicrosoftAspNetCoreMvcRazorExtensionsToolingInternalPackageVersion)"/>
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X.Internal.Transport" Version="$(MicrosoftAspNetCoreMvcRazorExtensionsVersion1_XInternalTransportPackageVersion)"/>
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X.Internal.Transport" Version="$(MicrosoftAspNetCoreMvcRazorExtensionsVersion2_XInternalTransportPackageVersion)"/>
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.Extensions.Tooling.Internal" Version="$(MicrosoftAspNetCoreMvcRazorExtensionsToolingInternalPackageVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X.Internal.Transport" Version="$(MicrosoftAspNetCoreMvcRazorExtensionsVersion1_XInternalTransportPackageVersion)" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X.Internal.Transport" Version="$(MicrosoftAspNetCoreMvcRazorExtensionsVersion2_XInternalTransportPackageVersion)" />
+    <PackageReference Include="Microsoft.VisualStudio.Telemetry" Version="$(MicrosoftVisualStudioTelemetryVersion)" />
   </ItemGroup>
 
   <ItemGroup>

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer.Common/Telemetry/ITelemetryReporter.cs

@@ -0,0 +1,12 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT license. See License.txt in the project root for license information.
+
+using Microsoft.VisualStudio.Telemetry;
+
+namespace Microsoft.AspNetCore.Razor.LanguageServer.Common.Telemetry
+{
+    internal interface ITelemetryReporter
+    {
+        void ReportEvent(string name, TelemetrySeverity severity);
+    }
+}

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/RazorLanguageServer.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT license. See License.txt in the project root for license information.
 
 using System;
+using System.Collections.Immutable;
 using System.IO;
 using System.Linq;
 using System.Reflection;
@@ -10,6 +11,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Razor.LanguageServer.AutoInsert;
 using Microsoft.AspNetCore.Razor.LanguageServer.CodeActions;
 using Microsoft.AspNetCore.Razor.LanguageServer.Common;
+using Microsoft.AspNetCore.Razor.LanguageServer.Common.Telemetry;
 using Microsoft.AspNetCore.Razor.LanguageServer.Completion;
 using Microsoft.AspNetCore.Razor.LanguageServer.Completion.Delegation;
 using Microsoft.AspNetCore.Razor.LanguageServer.Debugging;
@@ -30,6 +32,7 @@ using Microsoft.AspNetCore.Razor.LanguageServer.Refactoring;
 using Microsoft.AspNetCore.Razor.LanguageServer.Semantic;
 using Microsoft.AspNetCore.Razor.LanguageServer.Serialization;
 using Microsoft.AspNetCore.Razor.LanguageServer.SignatureHelp;
+using Microsoft.AspNetCore.Razor.LanguageServer.Telemetry;
 using Microsoft.AspNetCore.Razor.LanguageServer.Tooltip;
 using Microsoft.AspNetCore.Razor.LanguageServer.WrapWithTag;
 using Microsoft.CodeAnalysis.Razor;
@@ -41,6 +44,7 @@ using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using Microsoft.VisualStudio.Editor.Razor;
+using Microsoft.VisualStudio.Telemetry;
 using Newtonsoft.Json.Linq;
 using OmniSharp.Extensions.JsonRpc;
 using OmniSharp.Extensions.LanguageServer.Protocol.Serialization;
@@ -306,6 +310,12 @@ namespace Microsoft.AspNetCore.Razor.LanguageServer
 
                         // Defaults: For when the caller hasn't provided them through the `configure` action.
                         services.TryAddSingleton<HostServicesProvider, DefaultHostServicesProvider>();
+
+                        // Get the DefaultSession for telemetry. This is set by VS with
+                        // TelemetryService.SetDefaultSession and provides the correct
+                        // appinsights keys etc
+                        services.AddSingleton<ITelemetryReporter>(provider =>
+                            new TelemetryReporter(ImmutableArray.Create(TelemetryService.DefaultSession), provider.GetRequiredService<ILoggerFactory>()));
                     }));
 
             try

src/Razor/src/Microsoft.AspNetCore.Razor.LanguageServer/Telemetry/TelemetryReporter.cs

@@ -0,0 +1,50 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT license. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Immutable;
+using Microsoft.AspNetCore.Razor.LanguageServer.Common.Telemetry;
+using Microsoft.Extensions.Logging;
+using Microsoft.VisualStudio.Telemetry;
+
+namespace Microsoft.AspNetCore.Razor.LanguageServer.Telemetry
+{
+    internal class TelemetryReporter : ITelemetryReporter
+    {
+        private readonly ImmutableArray<TelemetrySession> _telemetrySessions;
+        private readonly ILogger _logger;
+
+        public TelemetryReporter(ImmutableArray<TelemetrySession> telemetrySessions, ILoggerFactory loggerFactory)
+        {
+            _telemetrySessions = telemetrySessions;
+            _logger = loggerFactory.CreateLogger<TelemetryReporter>();
+        }
+
+        public void ReportEvent(string name, TelemetrySeverity severity)
+        {
+            var telemetryEvent = new TelemetryEvent(name, severity);
+            Report(telemetryEvent);
+        }
+
+        private void Report(TelemetryEvent telemetryEvent)
+        {
+            try
+            {
+                foreach (var session in _telemetrySessions)
+                {
+                    session.PostEvent(telemetryEvent);
+                }
+            }
+            catch (OutOfMemoryException)
+            {
+                // Do we want to failfast like Roslyn here?
+            }
+            catch (Exception e)
+            {
+                // No need to do anything here. We failed to report telemetry
+                // which isn't good, but not catastrophic for a user
+                _logger.LogError(e, "Failed logging telemetry event");
+            }
+        }
+    }
+}