feat: switch dotnet-isolated project template telemetry to OpenTelemetry (#1779)

liliankasem · web-flow · commit 1cc8df7bb380 · 2026-04-29T11:16:24.000-07:00
diff --git a/Functions.Templates/ProjectTemplate_v4.x/CSharp-Isolated/.template.config/template.json b/Functions.Templates/ProjectTemplate_v4.x/CSharp-Isolated/.template.config/template.json
@@ -146,23 +146,6 @@
                     }
                 ]
             }
-        },
-        "FunctionsAppInsightsPackageVersion": {
-            "type": "generated",
-            "generator": "switch",
-            "replaces": "FunctionsAppInsightsPackageVersionValue",
-            "parameters": {
-                "datatype": "string",
-                "cases": [
-                    {
-                        "condition": "FrameworkShouldUseV1Dependencies",
-                        "value": "1.4.0"
-                    },
-                    {
-                        "value": "2.50.0"
-                    }
-                ]
-            }
         }
     },
     "sources": [
diff --git a/Functions.Templates/ProjectTemplate_v4.x/CSharp-Isolated/Company.FunctionApp.csproj b/Functions.Templates/ProjectTemplate_v4.x/CSharp-Isolated/Company.FunctionApp.csproj
@@ -15,9 +15,10 @@
   <!--#if (NetCore)-->
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
   <!--#endif -->
-    <PackageReference Include="Microsoft.ApplicationInsights.WorkerService" Version="2.23.0" />
     <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="FunctionsWorkerPackageVersionValue" />
-    <PackageReference Include="Microsoft.Azure.Functions.Worker.ApplicationInsights" Version="FunctionsAppInsightsPackageVersionValue" />
+    <PackageReference Include="Microsoft.Azure.Functions.Worker.OpenTelemetry" Version="1.2.0" />
+    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.15.3" />
+    <PackageReference Include="Azure.Monitor.OpenTelemetry.Exporter" Version="1.7.0" />
   <!--#if (NetCore)-->
     <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http.AspNetCore" Version="FunctionsAspNetCorePackageVersionValue" />
   <!--#endif -->
diff --git a/Functions.Templates/ProjectTemplate_v4.x/CSharp-Isolated/Program.cs b/Functions.Templates/ProjectTemplate_v4.x/CSharp-Isolated/Program.cs
@@ -1,9 +1,12 @@
+using Azure.Monitor.OpenTelemetry.Exporter;
 using Microsoft.Azure.Functions.Worker;
 #if (NetCore && !FrameworkShouldUseV1Dependencies)
 using Microsoft.Azure.Functions.Worker.Builder;
 #endif
+using Microsoft.Azure.Functions.Worker.OpenTelemetry;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
+using OpenTelemetry;
 
 #if NetFramework
 namespace Company.FunctionApp
@@ -17,8 +20,9 @@ static void Main(string[] args)
             var host = new HostBuilder()
                 .ConfigureFunctionsWorkerDefaults()
                 .ConfigureServices(services => {
-                    services.AddApplicationInsightsTelemetryWorkerService();
-                    services.ConfigureFunctionsApplicationInsights();
+                    services.AddOpenTelemetry()
+                        .UseFunctionsWorkerDefaults()
+                        .UseAzureMonitorExporter();
                 })
                 .Build();
 
@@ -30,8 +34,9 @@ static void Main(string[] args)
 var host = new HostBuilder()
     .ConfigureFunctionsWebApplication()
     .ConfigureServices(services => {
-        services.AddApplicationInsightsTelemetryWorkerService();
-        services.ConfigureFunctionsApplicationInsights();
+        services.AddOpenTelemetry()
+            .UseFunctionsWorkerDefaults()
+            .UseAzureMonitorExporter();
     })
     .Build();
 
@@ -41,9 +46,9 @@ static void Main(string[] args)
 
 builder.ConfigureFunctionsWebApplication();
 
-builder.Services
-    .AddApplicationInsightsTelemetryWorkerService()
-    .ConfigureFunctionsApplicationInsights();
+builder.Services.AddOpenTelemetry()
+    .UseFunctionsWorkerDefaults()
+    .UseAzureMonitorExporter();
 
 builder.Build().Run();
-#endif
+#endif
diff --git a/Functions.Templates/ProjectTemplate_v4.x/CSharp-Isolated/host.json b/Functions.Templates/ProjectTemplate_v4.x/CSharp-Isolated/host.json
@@ -1,5 +1,6 @@
 {
     "version": "2.0",
+    "telemetryMode": "OpenTelemetry",
     "logging": {
         "applicationInsights": {
             "samplingSettings": {
diff --git a/Functions.Templates/ProjectTemplate_v4.x/FSharp-Isolated/.template.config/template.json b/Functions.Templates/ProjectTemplate_v4.x/FSharp-Isolated/.template.config/template.json
@@ -116,23 +116,6 @@
                     }
                 ]
             }
-        },
-        "FunctionsAppInsightsPackageVersion": {
-            "type": "generated",
-            "generator": "switch",
-            "replaces": "FunctionsAppInsightsPackageVersionValue",
-            "parameters": {
-                "datatype": "string",
-                "cases": [
-                    {
-                        "condition": "FrameworkShouldUseV1Dependencies",
-                        "value": "1.4.0"
-                    },
-                    {
-                        "value": "2.50.0"
-                    }
-                ]
-            }
         }
     },
     "sources": [
diff --git a/Functions.Templates/ProjectTemplate_v4.x/FSharp-Isolated/Company.FunctionApp.fsproj b/Functions.Templates/ProjectTemplate_v4.x/FSharp-Isolated/Company.FunctionApp.fsproj
@@ -15,9 +15,10 @@
   <!--#if (NetCore)-->
     <FrameworkReference Include="Microsoft.AspNetCore.App" />
   <!--#endif -->
-    <PackageReference Include="Microsoft.ApplicationInsights.WorkerService" Version="2.23.0" />
     <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="FunctionsWorkerPackageVersionValue" />
-    <PackageReference Include="Microsoft.Azure.Functions.Worker.ApplicationInsights" Version="FunctionsAppInsightsPackageVersionValue" />
+    <PackageReference Include="Microsoft.Azure.Functions.Worker.OpenTelemetry" Version="1.2.0" />
+    <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.15.3" />
+    <PackageReference Include="Azure.Monitor.OpenTelemetry.Exporter" Version="1.7.0" />
   <!--#if (NetCore)-->
     <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http.AspNetCore" Version="FunctionsAspNetCorePackageVersionValue" />
   <!--#endif -->
diff --git a/Functions.Templates/ProjectTemplate_v4.x/FSharp-Isolated/Program.fs b/Functions.Templates/ProjectTemplate_v4.x/FSharp-Isolated/Program.fs
@@ -1,9 +1,12 @@
+open Azure.Monitor.OpenTelemetry.Exporter
 open Microsoft.Azure.Functions.Worker
 #if (!FrameworkShouldUseV1Dependencies)
 open Microsoft.Azure.Functions.Worker.Builder
 #endif
+open Microsoft.Azure.Functions.Worker.OpenTelemetry
 open Microsoft.Extensions.DependencyInjection
 open Microsoft.Extensions.Hosting
+open global.OpenTelemetry
 
 #if (FrameworkShouldUseV1Dependencies)
 [<EntryPoint>]
@@ -12,10 +15,10 @@ let main args =
         HostBuilder()
             .ConfigureFunctionsWebApplication()
             .ConfigureServices(fun services ->
-                services.AddApplicationInsightsTelemetryWorkerService()
-                |> ignore
-
-                services.ConfigureFunctionsApplicationInsights() |> ignore)
+                services.AddOpenTelemetry()
+                    .UseFunctionsWorkerDefaults()
+                    .UseAzureMonitorExporter()
+                |> ignore)
             .Build()
 
     // If using the Cosmos DB, Blob or Tables extension, you need to configure the extensions manually using the extension methods below.
@@ -35,9 +38,9 @@ let main args =
 
     builder.ConfigureFunctionsWebApplication() |> ignore
 
-    builder.Services
-        .AddApplicationInsightsTelemetryWorkerService()
-        .ConfigureFunctionsApplicationInsights() 
+    builder.Services.AddOpenTelemetry()
+        .UseFunctionsWorkerDefaults()
+        .UseAzureMonitorExporter()
     |> ignore
             
     // If using the Cosmos DB, Blob or Tables extension, you need to configure the extensions manually using the extension methods below.
@@ -48,4 +51,4 @@ let main args =
 
     builder.Build().Run()
     0
-#endif
+#endif
diff --git a/Functions.Templates/ProjectTemplate_v4.x/FSharp-Isolated/host.json b/Functions.Templates/ProjectTemplate_v4.x/FSharp-Isolated/host.json
@@ -1,5 +1,6 @@
 {
     "version": "2.0",
+    "telemetryMode": "OpenTelemetry",
     "logging": {
         "applicationInsights": {
             "samplingSettings": {

Original file line number	Diff line number	Diff line change
`@@ -146,23 +146,6 @@`
`146`	`146`	`}`
`147`	`147`	`]`
`148`	`148`	`}`
`149`		`- },`
`150`		`- "FunctionsAppInsightsPackageVersion": {`
`151`		`- "type": "generated",`
`152`		`- "generator": "switch",`
`153`		`- "replaces": "FunctionsAppInsightsPackageVersionValue",`
`154`		`- "parameters": {`
`155`		`- "datatype": "string",`
`156`		`- "cases": [`
`157`		`- {`
`158`		`- "condition": "FrameworkShouldUseV1Dependencies",`
`159`		`- "value": "1.4.0"`
`160`		`- },`
`161`		`- {`
`162`		`- "value": "2.50.0"`
`163`		`- }`
`164`		`- ]`
`165`		`- }`
`166`	`149`	`}`
`167`	`150`	`},`
`168`	`151`	`"sources": [`
Original file line number	Diff line number	Diff line change
`@@ -1,5 +1,6 @@`
`1`	`1`	`{`
`2`	`2`	`"version": "2.0",`
	`3`	`+ "telemetryMode": "OpenTelemetry",`
`3`	`4`	`"logging": {`
`4`	`5`	`"applicationInsights": {`
`5`	`6`	`"samplingSettings": {`
Original file line number	Diff line number	Diff line change
`@@ -116,23 +116,6 @@`
`116`	`116`	`}`
`117`	`117`	`]`
`118`	`118`	`}`
`119`		`- },`
`120`		`- "FunctionsAppInsightsPackageVersion": {`
`121`		`- "type": "generated",`
`122`		`- "generator": "switch",`
`123`		`- "replaces": "FunctionsAppInsightsPackageVersionValue",`
`124`		`- "parameters": {`
`125`		`- "datatype": "string",`
`126`		`- "cases": [`
`127`		`- {`
`128`		`- "condition": "FrameworkShouldUseV1Dependencies",`
`129`		`- "value": "1.4.0"`
`130`		`- },`
`131`		`- {`
`132`		`- "value": "2.50.0"`
`133`		`- }`
`134`		`- ]`
`135`		`- }`
`136`	`119`	`}`
`137`	`120`	`},`
`138`	`121`	`"sources": [`