[Telemetry]Re-add preview handlers telemetry logs and add tracers (#35597)

src/modules/previewpane/PdfPreviewHandler/PdfPreviewHandlerControl.cs

@@ -1,8 +1,17 @@
 // Copyright (c) Microsoft Corporation
 // The Microsoft Corporation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
+using System;
+using System.Drawing;
+using System.IO;
+using System.Runtime.InteropServices.ComTypes;
+using System.Windows.Forms;
+
 using Common;
+using Common.Utilities;
 using Microsoft.PowerToys.PreviewHandler.Pdf.Properties;
+using Microsoft.PowerToys.PreviewHandler.Pdf.Telemetry.Events;
+using Microsoft.PowerToys.Telemetry;
 using Windows.Data.Pdf;
 using Windows.Storage.Streams;
 using Windows.UI.ViewManagement;
@@ -149,9 +158,25 @@ namespace Microsoft.PowerToys.PreviewHandler.Pdf
                         memStream.Dispose();
                     }
                 }
+
+                try
+                {
+                    PowerToysTelemetry.Log.WriteEvent(new PdfFilePreviewed());
+                }
+                catch
+                { // Should not crash if sending telemetry is failing. Ignore the exception.
+                }
             }
-            catch (Exception)
+            catch (Exception ex)
             {
+                try
+                {
+                    PowerToysTelemetry.Log.WriteEvent(new PdfFilePreviewError { Message = ex.Message });
+                }
+                catch
+                { // Should not crash if sending telemetry is failing. Ignore the exception.
+                }
+
                 Controls.Clear();
                 _infoBar = GetTextBoxControl(Resources.PdfNotPreviewedError);
                 Controls.Add(_infoBar);

src/modules/previewpane/PdfPreviewHandler/Program.cs

@@ -5,6 +5,7 @@ using System.Globalization;
 using System.Windows.Threading;
 
 using Common.UI;
+using Microsoft.PowerToys.Telemetry;
 using PowerToys.Interop;
 
 namespace Microsoft.PowerToys.PreviewHandler.Pdf
@@ -26,6 +27,8 @@ namespace Microsoft.PowerToys.PreviewHandler.Pdf
             {
                 if (args.Length == 6)
                 {
+                    ETWTrace etwTrace = new ETWTrace(Path.Combine(Environment.GetEnvironmentVariable("USERPROFILE"), "AppData", "LocalLow", "Microsoft", "PowerToys", "etw"));
+
                     string filePath = args[0];
                     IntPtr hwnd = IntPtr.Parse(args[1], NumberStyles.HexNumber, CultureInfo.InvariantCulture);
 
@@ -51,12 +54,16 @@ namespace Microsoft.PowerToys.PreviewHandler.Pdf
                             Rectangle s = default;
                             if (!_previewHandlerControl.SetRect(s))
                             {
+                                etwTrace?.Dispose();
+
                                 // When the parent HWND became invalid, the application won't respond to Application.Exit().
                                 Environment.Exit(0);
                             }
                         },
                         Dispatcher.CurrentDispatcher,
                         _tokenSource.Token);
+
+                    etwTrace?.Dispose();
                 }
                 else
                 {

src/modules/previewpane/PdfPreviewHandler/Telemetry/Events/PdfFileHandlerLoaded.cs

@@ -0,0 +1,21 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics.Tracing;
+
+using Microsoft.PowerToys.Telemetry;
+using Microsoft.PowerToys.Telemetry.Events;
+
+namespace Microsoft.PowerToys.PreviewHandler.Pdf.Telemetry.Events
+{
+    /// <summary>
+    /// A telemetry event that is triggered when a pdf file is viewed in the preview pane.
+    /// </summary>
+    [EventData]
+    public class PdfFileHandlerLoaded : EventBase, IEvent
+    {
+        /// <inheritdoc/>
+        public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServiceUsage;
+    }
+}

src/modules/previewpane/PdfPreviewHandler/Telemetry/Events/PdfFilePreviewError.cs

@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using Microsoft.PowerToys.Telemetry;
+using Microsoft.PowerToys.Telemetry.Events;
+
+namespace Microsoft.PowerToys.PreviewHandler.Pdf.Telemetry.Events
+{
+    /// <summary>
+    /// A telemetry event that is triggered when an error occurs while attempting to view a markdown file in the preview pane.
+    /// </summary>
+    public class PdfFilePreviewError : EventBase, IEvent
+    {
+        /// <summary>
+        /// Gets or sets the error message.
+        /// </summary>
+        public string Message { get; set; }
+
+        /// <inheritdoc/>
+        public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServicePerformance;
+    }
+}

src/modules/previewpane/PdfPreviewHandler/Telemetry/Events/PdfFilePreviewed.cs

@@ -0,0 +1,21 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics.Tracing;
+
+using Microsoft.PowerToys.Telemetry;
+using Microsoft.PowerToys.Telemetry.Events;
+
+namespace Microsoft.PowerToys.PreviewHandler.Pdf.Telemetry.Events
+{
+    /// <summary>
+    /// A telemetry event that is triggered when a markdown file is viewed in the preview pane.
+    /// </summary>
+    [EventData]
+    public class PdfFilePreviewed : EventBase, IEvent
+    {
+        /// <inheritdoc/>
+        public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServiceUsage;
+    }
+}