Add TypeScript apphost.ts for polyglot AppHost support.

README.md

@@ -26,6 +26,24 @@ Samples for [Aspire](https://aspire.dev).
 | [HealthChecksUI](./samples/health-checks-ui) | C# | ASP.NET Core, Containers, Docker Compose | Demonstrates resources with separate isolated endpoints for health checks. |
 | [Azure Functions](./samples/aspire-with-azure-functions) | C# | ASP.NET Core, Blazor, Azure Functions, Azure Blob Storage | Shows how to integrate [Azure Functions](https://learn.microsoft.com/azure/azure-functions/functions-overview) with Aspire. |
 
+## Sample Directory Structure
+
+Each sample contains `cs/` and `ts/` subfolders that isolate the C# and TypeScript [polyglot AppHosts](https://learn.microsoft.com/dotnet/aspire/app-host/polyglot-apphost) respectively. Shared service projects remain at the sample root.
+
+To run a sample with the **C# AppHost**:
+
+```bash
+cd samples/<sample-name>/cs
+aspire run
+```
+
+To run a sample with the **TypeScript AppHost** (requires the [staging Aspire CLI](./samples/POLYGLOT_NOTES.md)):
+
+```bash
+cd samples/<sample-name>/ts
+aspire run
+```
+
 ## eShop
 
 [eShop](https://github.com/dotnet/eshop) is a reference application implementing an eCommerce web site on a services-based architecture using Aspire.

samples/Metrics/Metrics.slnx

@@ -2,7 +2,7 @@
   <Folder Name="/Solution Items/">
     <File Path="README.md" />
   </Folder>
-  <Project Path="MetricsApp.AppHost/MetricsApp.AppHost.csproj" />
+  <Project Path="cs/MetricsApp.AppHost/MetricsApp.AppHost.csproj" />
   <Project Path="MetricsApp.Client/MetricsApp.Client.csproj" />
   <Project Path="MetricsApp/MetricsApp.csproj" />
   <Project Path="ServiceDefaults/ServiceDefaults.csproj" />

samples/Metrics/README.md

@@ -17,7 +17,10 @@ This is a simple .NET app that shows off collecting metrics with OpenTelemetry a
 
 ## Running the sample
 
-If using the Aspire CLI, run `aspire run` from this directory.
+If using the Aspire CLI, first navigate to the desired AppHost language directory, then run the app:
+
+- **C# AppHost**: `cd cs` then `aspire run`
+- **TypeScript AppHost**: `cd ts` then `aspire run`
 
 If using VS Code, open this directory as a workspace and launch the `MetricsApp.AppHost` project using either the Aspire or C# debuggers.
 

samples/Metrics/MetricsApp.AppHost/AppHost.cs → samples/Metrics/cs/MetricsApp.AppHost/AppHost.cs

@@ -3,19 +3,19 @@
 var builder = DistributedApplication.CreateBuilder(args);
 
 var prometheus = builder.AddContainer("prometheus", "prom/prometheus", "v3.2.1")
-    .WithBindMount("../prometheus", "/etc/prometheus", isReadOnly: true)
+    .WithBindMount("../../prometheus", "/etc/prometheus", isReadOnly: true)
     .WithArgs("--web.enable-otlp-receiver", "--config.file=/etc/prometheus/prometheus.yml")
     .WithHttpEndpoint(targetPort: 9090)
     .WithUrlForEndpoint("http", u => u.DisplayText = "Prometheus Dashboard");
 
 var grafana = builder.AddContainer("grafana", "grafana/grafana")
-    .WithBindMount("../grafana/config", "/etc/grafana", isReadOnly: true)
-    .WithBindMount("../grafana/dashboards", "/var/lib/grafana/dashboards", isReadOnly: true)
+    .WithBindMount("../../grafana/config", "/etc/grafana", isReadOnly: true)
+    .WithBindMount("../../grafana/dashboards", "/var/lib/grafana/dashboards", isReadOnly: true)
     .WithEnvironment("PROMETHEUS_ENDPOINT", prometheus.GetEndpoint("http"))
     .WithHttpEndpoint(targetPort: 3000)
     .WithUrlForEndpoint("http", u => u.DisplayText = "Grafana Dashboard");
 
-builder.AddOpenTelemetryCollector("otelcollector", "../otelcollector/config.yaml")
+builder.AddOpenTelemetryCollector("otelcollector", "../../otelcollector/config.yaml")
     .WithEnvironment("PROMETHEUS_ENDPOINT", $"{prometheus.GetEndpoint("http")}/api/v1/otlp");
 
 builder.AddProject<Projects.MetricsApp>("app")

samples/Metrics/MetricsApp.AppHost/MetricsApp.AppHost.csproj → samples/Metrics/cs/MetricsApp.AppHost/MetricsApp.AppHost.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\MetricsApp\MetricsApp.csproj" />
+    <ProjectReference Include="..\..\MetricsApp\MetricsApp.csproj" />
   </ItemGroup>
 
 </Project>

samples/Metrics/ts/.modules/.codegen-hash

@@ -0,0 +1 @@
+54ABC5F6F3238E45FD69B96BCCB0C6A5BB14B11F3C267B90DC987EFF3E1B7E45