[DRAFT/TEMP] Dogfooding MCP Gateway

playground/PostgresEndToEnd/PostgresEndToEnd.AppHost/Program.cs

@@ -3,9 +3,10 @@
 
 var builder = DistributedApplication.CreateBuilder(args);
 
-var db1 = builder.AddAzurePostgresFlexibleServer("pg")
-                 .RunAsContainer()
-                 .AddDatabase("db1");
+var pg = builder.AddPostgres("pg")
+              .WithPostgresMcp();
+
+var db1 = pg.AddDatabase("db1");
 
 builder.AddProject<Projects.PostgresEndToEnd_ApiService>("api")
        .WithExternalHttpEndpoints()

playground/Redis/Redis.AppHost/Program.cs

@@ -3,7 +3,8 @@
 var redis = builder.AddRedis("redis");
 redis.WithDataVolume()
     .WithRedisCommander(c => c.WithHostPort(33803).WithParentRelationship(redis))
-    .WithRedisInsight(c => c.WithHostPort(41567).WithParentRelationship(redis));
+    .WithRedisInsight(c => c.WithHostPort(41567).WithParentRelationship(redis))
+    .WithRedisMcp();
 
 var garnet = builder.AddGarnet("garnet")
     .WithDataVolume();

src/Aspire.Cli/Backchannel/AuxiliaryBackchannelMonitor.cs

@@ -35,7 +35,24 @@ internal sealed class AuxiliaryBackchannelMonitor(
     /// <summary>
     /// Gets or sets the path to the selected AppHost. When set, this AppHost will be used for MCP operations.
     /// </summary>
-    public string? SelectedAppHostPath { get; set; }
+    public string? SelectedAppHostPath
+    {
+        get => _selectedAppHostPath;
+        set
+        {
+            if (_selectedAppHostPath != value)
+            {
+                _selectedAppHostPath = value;
+                SelectedAppHostChanged?.Invoke();
+            }
+        }
+    }
+    private string? _selectedAppHostPath;
+
+    /// <summary>
+    /// Event raised when the selected AppHost changes.
+    /// </summary>
+    public event Action? SelectedAppHostChanged;
 
     protected override async Task ExecuteAsync(CancellationToken stoppingToken)
     {

src/Aspire.Cli/Backchannel/IAuxiliaryBackchannelMonitor.cs

@@ -17,4 +17,9 @@ internal interface IAuxiliaryBackchannelMonitor
     /// Gets or sets the path to the selected AppHost. When set, this AppHost will be used for MCP operations.
     /// </summary>
     string? SelectedAppHostPath { get; set; }
+
+    /// <summary>
+    /// Event raised when the selected AppHost changes.
+    /// </summary>
+    event Action? SelectedAppHostChanged;
 }