Set service name in App insights

backend/extensions/Squidex.Extensions/APM/ApplicationInsights/ApplicationInsightsPlugin.cs

@@ -8,6 +8,7 @@
 using System;
 using Microsoft.ApplicationInsights;
 using Microsoft.ApplicationInsights.DataContracts;
+using Microsoft.ApplicationInsights.Extensibility;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
@@ -42,6 +43,7 @@ namespace Squidex.Extensions.APM.ApplicationInsights
             {
                 services.AddSingleton<IStartupFilter>(this);
                 services.AddApplicationInsightsTelemetry();
+                services.AddSingleton<ITelemetryInitializer, RoleNameTelemetryInitializer>();
             }
         }
     }

backend/extensions/Squidex.Extensions/APM/ApplicationInsights/RoleNameTelemetryInitializer.cs

@@ -0,0 +1,36 @@
+// ==========================================================================
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex UG (haftungsbeschraenkt)
+//  All rights reserved. Licensed under the MIT license.
+// ==========================================================================
+
+using Microsoft.ApplicationInsights.Channel;
+using Microsoft.ApplicationInsights.Extensibility;
+using Microsoft.Extensions.Configuration;
+
+namespace Squidex.Extensions.APM.ApplicationInsights
+{
+    public sealed class RoleNameTelemetryInitializer : ITelemetryInitializer
+    {
+        private readonly string roleName;
+
+        public RoleNameTelemetryInitializer(IConfiguration configuration)
+        {
+            roleName = configuration.GetValue<string>("logging:roleName");
+
+            if (string.IsNullOrWhiteSpace(roleName))
+            {
+                roleName = "Squidex";
+            }
+        }
+
+        public void Initialize(ITelemetry telemetry)
+        {
+            if (string.IsNullOrEmpty(telemetry.Context.Cloud.RoleName))
+            {
+                telemetry.Context.Cloud.RoleName = roleName;
+            }
+        }
+    }
+}