Add the OS Platform information in telemetry

shell/agents/Microsoft.Azure.Agent/Telemetry.cs

@@ -1,3 +1,4 @@
+using System.Runtime.InteropServices;
 using System.Text.Json;
 
 using Microsoft.ApplicationInsights;
@@ -13,45 +14,15 @@ public class AzTrace
     /// </summary>
     internal static string InstallationId { get; private set; }
 
+    /// <summary>
+    /// OS platform the application is running on.
+    /// </summary>
+    internal static string Platform { get; private set; }
+
     internal static void Initialize()
     {
-        InstallationId = null;
-
-        string azCLIProfilePath, azPSHProfilePath;
-        string azureConfigDir = Environment.GetEnvironmentVariable("AZURE_CONFIG_DIR");
-        string userProfile = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
-
-        if (string.IsNullOrEmpty(azureConfigDir))
-        {
-            azCLIProfilePath = Path.Combine(userProfile, ".azure", "azureProfile.json");
-            azPSHProfilePath = Path.Combine(userProfile, ".Azure", "AzureRmContextSettings.json");
-        }
-        else
-        {
-            azCLIProfilePath = Path.Combine(azureConfigDir, "azureProfile.json");
-            azPSHProfilePath = Path.Combine(azureConfigDir, "AzureRmContextSettings.json");
-        }
-
-        try
-        {
-            if (File.Exists(azCLIProfilePath))
-            {
-                using var stream = File.OpenRead(azCLIProfilePath);
-                var jsonElement = JsonSerializer.Deserialize<JsonElement>(stream);
-                InstallationId = jsonElement.GetProperty("installationId").GetString();
-            }
-            else if (File.Exists(azPSHProfilePath))
-            {
-                using var stream = File.OpenRead(azPSHProfilePath);
-                var jsonElement = JsonSerializer.Deserialize<JsonElement>(stream);
-                InstallationId = jsonElement.GetProperty("Settings").GetProperty(nameof(InstallationId)).GetString();
-            }
-        }
-        catch
-        {
-            // Something wrong when reading the config file.
-            InstallationId = null;
-        }
+        InstallationId = GetInstallationId();
+        Platform = GetOSPlatform();
     }
 
     /// <summary>
@@ -157,6 +128,67 @@ internal static AzTrace Exception(object details)
         // Don't create an object when telemetry is disabled.
         return null;
     }
+
+    private static string GetInstallationId()
+    {
+        string azCLIProfilePath, azPSHProfilePath;
+        string azureConfigDir = Environment.GetEnvironmentVariable("AZURE_CONFIG_DIR");
+        string userProfile = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
+
+        if (string.IsNullOrEmpty(azureConfigDir))
+        {
+            azCLIProfilePath = Path.Combine(userProfile, ".azure", "azureProfile.json");
+            azPSHProfilePath = Path.Combine(userProfile, ".Azure", "AzureRmContextSettings.json");
+        }
+        else
+        {
+            azCLIProfilePath = Path.Combine(azureConfigDir, "azureProfile.json");
+            azPSHProfilePath = Path.Combine(azureConfigDir, "AzureRmContextSettings.json");
+        }
+
+        try
+        {
+            if (File.Exists(azCLIProfilePath))
+            {
+                using var stream = File.OpenRead(azCLIProfilePath);
+                var jsonElement = JsonSerializer.Deserialize<JsonElement>(stream);
+                return jsonElement.GetProperty("installationId").GetString();
+            }
+            else if (File.Exists(azPSHProfilePath))
+            {
+                using var stream = File.OpenRead(azPSHProfilePath);
+                var jsonElement = JsonSerializer.Deserialize<JsonElement>(stream);
+                return jsonElement.GetProperty("Settings").GetProperty(nameof(InstallationId)).GetString();
+            }
+        }
+        catch
+        {
+            // Something wrong when reading the config file.
+            return null;
+        }
+
+        return null;
+    }
+
+    private static string GetOSPlatform()
+    {
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+        {
+            return "Windows";
+        }
+        else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+        {
+            return "Linux";
+        }
+        else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+        {
+            return "macOS";
+        }
+        else
+        {
+            return "Unknown";
+        }
+    }
 }
 
 internal class Telemetry
@@ -199,6 +231,7 @@ private void LogTelemetry(AzTrace trace, Exception exception)
             ["EventType"] = trace.EventType,
             ["ShellCommand"] = trace.ShellCommand,
             ["Details"] = GetDetailedMessage(trace.Details),
+            ["OSPlatform"] = AzTrace.Platform
         };
 
         if (exception is null)