Add health check endpoint to Flagd resource and builder

Signed-off-by: GitHub <noreply@github.com>

Author: askpt

src/CommunityToolkit.Aspire.Hosting.Flagd/FlagdBuilderExtensions.cs

@@ -9,6 +9,7 @@ namespace Aspire.Hosting;
 public static class FlagdBuilderExtensions
 {
     private const int FlagdPort = 8013;
+    private const int HealthCheckPort = 8014;
 
     /// <summary>
     /// Adds a flagd container to the application model.
@@ -34,6 +35,8 @@ public static IResourceBuilder<FlagdResource> AddFlagd(
             .WithImage(FlagdContainerImageTags.Image, FlagdContainerImageTags.Tag)
             .WithImageRegistry(FlagdContainerImageTags.Registry)
             .WithHttpEndpoint(port: port, targetPort: FlagdPort, name: FlagdResource.HttpEndpointName)
+            .WithHttpEndpoint(null, HealthCheckPort, FlagdResource.HealthCheckEndpointName)
+            .WithHttpHealthCheck("/healthz", endpointName: FlagdResource.HealthCheckEndpointName)
             .WithBindMount(fileSource, "/flags")
             .WithArgs("start", "--uri", "file:./flags/flagd.json");
     }

src/CommunityToolkit.Aspire.Hosting.Flagd/FlagdResource.cs

@@ -10,14 +10,22 @@ namespace Aspire.Hosting.ApplicationModel;
 public class FlagdResource(string name) : ContainerResource(name), IResourceWithConnectionString
 {
     internal const string HttpEndpointName = "http";
+    internal const string HealthCheckEndpointName = "health";
 
     private EndpointReference? _primaryEndpointReference;
 
+    private EndpointReference? _healthCheckEndpointReference;
+
     /// <summary>
     /// Gets the primary HTTP endpoint for the flagd server.
     /// </summary>
     public EndpointReference PrimaryEndpoint => _primaryEndpointReference ??= new(this, HttpEndpointName);
 
+    /// <summary>
+    /// Gets the health check HTTP endpoint for the flagd server.
+    /// </summary>
+    public EndpointReference HealthCheckEndpoint => _healthCheckEndpointReference ??= new(this, HealthCheckEndpointName);
+
     /// <summary>
     /// Gets the connection string expression for the flagd server.
     /// </summary>