dotnet · davidfowl · Jul 12, 2025 · Jun 20, 2025 · Jul 10, 2025 · Jul 10, 2025
@@ -1,8 +1,12 @@
+#pragma warning disable ASPIREINTERACTION001 // Type is for evaluation purposes only and is subject to change or removal in future updates. Suppress this diagnostic to proceed.
+
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Reflection;
 using System.Security.Cryptography;
 using System.Text.Json.Nodes;
+using System.Text.RegularExpressions;
 using Aspire.Hosting.Azure.Utils;
 using Azure;
 using Azure.Core;
@@ -16,7 +20,8 @@ namespace Aspire.Hosting.Azure.Provisioning.Internal;
 /// <summary>
 /// Default implementation of <see cref="IProvisioningContextProvider"/>.
 /// </summary>
-internal sealed class DefaultProvisioningContextProvider(
+internal sealed partial class DefaultProvisioningContextProvider(
+    IInteractionService interactionService,
     IOptions<AzureProvisionerOptions> options,
     IHostEnvironment environment,
     ILogger<DefaultProvisioningContextProvider> logger,
@@ -26,8 +31,157 @@ internal sealed class DefaultProvisioningContextProvider(
 {
     private readonly AzureProvisionerOptions _options = options.Value;
 
+    private readonly TaskCompletionSource _provisioningOptionsAvailable = new();
+
+    private void EnsureProvisioningOptions(JsonObject userSecrets)
+    {
+        if (!interactionService.IsAvailable ||
+            (!string.IsNullOrEmpty(_options.Location) && !string.IsNullOrEmpty(_options.SubscriptionId)))
+        {
+            // If the interaction service is not available, or 
+            // if both options are already set, we can skip the prompt
+            _provisioningOptionsAvailable.TrySetResult();
+            return;
+        }
+
+        // Start the loop that will allow the user to specify the Azure provisioning options
+        _ = Task.Run(async () =>
+        {
+            try
+            {
+                await RetrieveAzureProvisioningOptions(userSecrets).ConfigureAwait(false);
+
+                logger.LogDebug("Azure provisioning options have been handled successfully.");
+            }
+            catch (Exception ex)
+            {
+                logger.LogError(ex, "Failed to retrieve Azure provisioning options.");
+                _provisioningOptionsAvailable.SetException(ex);
+            }
+        });
+    }
+
+    private async Task RetrieveAzureProvisioningOptions(JsonObject userSecrets, CancellationToken cancellationToken = default)
+    {
+        while (_options.Location == null || _options.SubscriptionId == null)
+        {
+            var locations = typeof(AzureLocation).GetProperties(BindingFlags.Public | BindingFlags.Static)
+                            .Where(p => p.PropertyType == typeof(AzureLocation))
+                            .Select(p => (AzureLocation)p.GetValue(null)!)
+                            .Select(location => KeyValuePair.Create(location.Name, location.DisplayName ?? location.Name))
+                            .OrderBy(kvp => kvp.Value)
+                            .ToList();
+
+            var messageBarResult = await interactionService.PromptMessageBarAsync(
+                 "Azure provisioning",
+                 "The model contains Azure resources that require an Azure Subscription.",
+                 new MessageBarInteractionOptions
+                 {
+                     Intent = MessageIntent.Warning,
+                     PrimaryButtonText = "Enter values"
+                 },
+                 cancellationToken)
+                 .ConfigureAwait(false);
+
+            if (messageBarResult.Canceled)
+            {
+                // User canceled the prompt, so we exit the loop
+                _provisioningOptionsAvailable.SetException(new MissingConfigurationException("Azure provisioning options were not provided."));
+                return;
+            }
+
+            if (messageBarResult.Data)
+            {
+                var result = await interactionService.PromptInputsAsync(
+                    "Azure provisioning",
+                    """
+                    The model contains Azure resources that require an Azure Subscription. 
+
+                    To learn more, see the [Azure provisioning docs](https://aka.ms/dotnet/aspire/azure/provisioning).
+                    """,
+                    [
+                        new InteractionInput { InputType = InputType.Choice, Label = "Location", Placeholder = "Select Location", Required = true, Options = [..locations] },
+                        new InteractionInput { InputType = InputType.SecretText, Label = "Subscription ID", Placeholder = "Select Subscription ID", Required = true },
+                        new InteractionInput { InputType = InputType.Text, Label = "Resource group", Value = GetDefaultResourceGroupName()},
+                    ],
+                    new InputsDialogInteractionOptions
+                    {
+                        EnableMessageMarkdown = true,
+                        ValidationCallback = static (validationContext) =>
+                        {
+                            var subscriptionInput = validationContext.Inputs[1];
+                            if (!Guid.TryParse(subscriptionInput.Value, out var _))
+                            {
+                                validationContext.AddValidationError(subscriptionInput, "Subscription ID must be a valid GUID");
+                            }
+
+                            var resourceGroupInput = validationContext.Inputs[2];
+                            if (!IsValidResourceGroupName(resourceGroupInput.Value))
+                            {
+                                validationContext.AddValidationError(resourceGroupInput, "Resource group name must be a valid Azure resource group name.");
+                            }
+
+                            return Task.CompletedTask;
+                        }
+                    },
+                    cancellationToken).ConfigureAwait(false);
+
+                if (!result.Canceled)
+                {
+                    _options.Location = result.Data?[0].Value;
+                    _options.SubscriptionId = result.Data?[1].Value;
+                    _options.ResourceGroup = result.Data?[2].Value;
+                    _options.AllowResourceGroupCreation = true; // Allow the creation of the resource group if it does not exist.
+
+                    // Persist the parameter value to user secrets so they can be reused in the future
+                    userSecrets.Prop("Azure")["Location"] = _options.Location;
+                    userSecrets.Prop("Azure")["SubscriptionId"] = _options.SubscriptionId;
+                    userSecrets.Prop("Azure")["ResourceGroup"] = _options.ResourceGroup;
+
+                    _provisioningOptionsAvailable.SetResult();
+                }
+            }
+        }
+    }
+
+    [GeneratedRegex(@"^[a-zA-Z0-9_\-\.\(\)]+$")]
+    private static partial Regex ResourceGroupValidCharacters();
+
+    private static bool IsValidResourceGroupName(string? name)
+    {
+        if (string.IsNullOrWhiteSpace(name) || name.Length > 90)
+        {
+            return false;
+        }
+
+        // Only allow valid characters - letters, digits, underscores, hyphens, periods, and parentheses
+        if (!ResourceGroupValidCharacters().IsMatch(name))
+        {
+            return false;
+        }
+
+        // Must start with a letter
+        if (!char.IsLetter(name[0]))
+        {
+            return false;
+        }
+
+        // Cannot end with a period
+        if (name.EndsWith('.'))
+        {
+            return false;
+        }
+
+        // No consecutive periods
+        return !name.Contains("..");
+    }
+
     public async Task<ProvisioningContext> CreateProvisioningContextAsync(JsonObject userSecrets, CancellationToken cancellationToken = default)
     {
+        EnsureProvisioningOptions(userSecrets);
+
+        await _provisioningOptionsAvailable.Task.ConfigureAwait(false);
+
         var subscriptionId = _options.SubscriptionId ?? throw new MissingConfigurationException("An Azure subscription id is required. Set the Azure:SubscriptionId configuration value.");
 
         var credential = tokenCredentialProvider.TokenCredential;
@@ -57,26 +211,8 @@ public async Task<ProvisioningContext> CreateProvisioningContextAsync(JsonObject
         if (string.IsNullOrEmpty(_options.ResourceGroup))
         {
             // Generate an resource group name since none was provided
-
-            var prefix = "rg-aspire";
-
-            if (!string.IsNullOrWhiteSpace(_options.ResourceGroupPrefix))
-            {
-                prefix = _options.ResourceGroupPrefix;
-            }
-
-            var suffix = RandomNumberGenerator.GetHexString(8, lowercase: true);
-
-            var maxApplicationNameSize = ResourceGroupNameHelpers.MaxResourceGroupNameLength - prefix.Length - suffix.Length - 2; // extra '-'s
-
-            var normalizedApplicationName = ResourceGroupNameHelpers.NormalizeResourceGroupName(environment.ApplicationName.ToLowerInvariant());
-            if (normalizedApplicationName.Length > maxApplicationNameSize)
-            {
-                normalizedApplicationName = normalizedApplicationName[..maxApplicationNameSize];
-            }
-
             // Create a unique resource group name and save it in user secrets
-            resourceGroupName = $"{prefix}-{normalizedApplicationName}-{suffix}";
+            resourceGroupName = GetDefaultResourceGroupName();
 
             createIfAbsent = true;
 
@@ -131,4 +267,26 @@ public async Task<ProvisioningContext> CreateProvisioningContextAsync(JsonObject
                     principal,
                     userSecrets);
     }
-}
+
+    private string GetDefaultResourceGroupName()
+    {
+        var prefix = "rg-aspire";
+
+        if (!string.IsNullOrWhiteSpace(_options.ResourceGroupPrefix))
+        {
+            prefix = _options.ResourceGroupPrefix;
+        }
+
+        var suffix = RandomNumberGenerator.GetHexString(8, lowercase: true);
+
+        var maxApplicationNameSize = ResourceGroupNameHelpers.MaxResourceGroupNameLength - prefix.Length - suffix.Length - 2; // extra '-'s
+
+        var normalizedApplicationName = ResourceGroupNameHelpers.NormalizeResourceGroupName(environment.ApplicationName.ToLowerInvariant());
+        if (normalizedApplicationName.Length > maxApplicationNameSize)
+        {
+            normalizedApplicationName = normalizedApplicationName[..maxApplicationNameSize];
+        }
+
+        return $"{prefix}-{normalizedApplicationName}-{suffix}";
+    }
+}
diff --git a/src/Aspire.Hosting/Dashboard/DashboardServiceData.cs b/src/Aspire.Hosting/Dashboard/DashboardServiceData.cs
@@ -179,7 +179,7 @@ await _interactionService.CompleteInteractionAsync(
                                 incomingValue = (bool.TryParse(incomingValue, out var b) && b) ? "true" : "false";
                             }
 
-                            modelInput.SetValue(incomingValue);
+                            modelInput.Value = incomingValue;
                         }
 
                         return new InteractionCompletionState { Complete = true, State = inputsInfo.Inputs };

diff --git a/src/Aspire.Hosting/IInteractionService.cs b/src/Aspire.Hosting/IInteractionService.cs
@@ -103,8 +103,6 @@ public interface IInteractionService
 [Experimental(InteractionService.DiagnosticId, UrlFormat = "https://aka.ms/aspire/diagnostics/{0}")]
 public sealed class InteractionInput
 {
-    private string? _value;
-
     /// <summary>
     /// Gets or sets the label for the input.
     /// </summary>
@@ -128,15 +126,13 @@ public sealed class InteractionInput
     /// <summary>
     /// Gets or sets the value of the input.
     /// </summary>
-    public string? Value { get => _value; init => _value = value; }
+    public string? Value { get; set; }
 
     /// <summary>
     /// Gets or sets the placeholder text for the input.
     /// </summary>
     public string? Placeholder { get; set; }
 
-    internal void SetValue(string value) => _value = value;
-
     internal List<string> ValidationErrors { get; } = [];
 }
 
@@ -329,6 +325,38 @@ public class InteractionOptions
     public bool? EnableMessageMarkdown { get; set; }
 }
 
+/// <summary>
+/// Provides a set of static methods for the <see cref="InteractionResult{T}"/>.
+/// </summary>
+public static class InteractionResult
+{
+    /// <summary>
+    /// Creates a new <see cref="InteractionResult{T}"/> with the specified result and a flag indicating that the interaction was not canceled.
+    /// </summary>
+    /// <typeparam name="T">The type of the data associated with the interaction result.</typeparam>
+    /// <param name="result">The data returned from the interaction.</param>
+    /// <returns>The new <see cref="InteractionResult{T}"/>.</returns>
+    public static InteractionResult<T> Ok<T>(T result)
+    {
+        return new InteractionResult<T>(result, canceled: false);
+    }
+
+    /// <summary>
+    /// Creates an <see cref="InteractionResult{T}"/> indicating a canceled interaction.
+    /// </summary>
+    /// <typeparam name="T">The type of the data associated with the interaction result.</typeparam>
+    /// <param name="data">Optional data to include with the interaction result. Defaults to the default value of type <typeparamref
+    /// name="T"/> if not provided.</param>
+    /// <returns>
+    /// An <see cref="InteractionResult{T}"/> with the <c>canceled</c> flag set to <see langword="true"/> and containing
+    /// the specified data.
+    /// </returns>
+    public static InteractionResult<T> Cancel<T>(T? data = default)
+    {
+        return new InteractionResult<T>(data ?? default, canceled: true);
+    }
+}
+
 /// <summary>
 /// Represents the result of an interaction.
 /// </summary>

diff --git a/src/Aspire.Hosting/InteractionService.cs b/src/Aspire.Hosting/InteractionService.cs
@@ -67,8 +67,8 @@ private async Task<InteractionResult<bool>> PromptMessageBoxCoreAsync(string tit
         var completion = await newState.CompletionTcs.Task.ConfigureAwait(false);
         var promptState = completion.State as bool?;
         return promptState == null
-            ? InteractionResultFactory.Cancel<bool>()
-            : InteractionResultFactory.Ok(promptState.Value);
+            ? InteractionResult.Cancel<bool>()
+            : InteractionResult.Ok(promptState.Value);
     }
 
     public async Task<InteractionResult<InteractionInput>> PromptInputAsync(string title, string? message, string inputLabel, string placeHolder, InputsDialogInteractionOptions? options = null, CancellationToken cancellationToken = default)
@@ -81,10 +81,10 @@ public async Task<InteractionResult<InteractionInput>> PromptInputAsync(string t
         var result = await PromptInputsAsync(title, message, [input], options, cancellationToken).ConfigureAwait(false);
         if (result.Canceled)
         {
-            return InteractionResultFactory.Cancel<InteractionInput>();
+            return InteractionResult.Cancel<InteractionInput>();
         }
 
-        return InteractionResultFactory.Ok(result.Data[0]);
+        return InteractionResult.Ok(result.Data[0]);
     }
 
     public async Task<InteractionResult<IReadOnlyList<InteractionInput>>> PromptInputsAsync(string title, string? message, IReadOnlyList<InteractionInput> inputs, InputsDialogInteractionOptions? options = null, CancellationToken cancellationToken = default)
@@ -103,8 +103,8 @@ public async Task<InteractionResult<IReadOnlyList<InteractionInput>>> PromptInpu
         var completion = await newState.CompletionTcs.Task.ConfigureAwait(false);
         var inputState = completion.State as IReadOnlyList<InteractionInput>;
         return inputState == null
-            ? InteractionResultFactory.Cancel<IReadOnlyList<InteractionInput>>()
-            : InteractionResultFactory.Ok(inputState);
+            ? InteractionResult.Cancel<IReadOnlyList<InteractionInput>>()
+            : InteractionResult.Ok(inputState);
     }
 
     public async Task<InteractionResult<bool>> PromptMessageBarAsync(string title, string message, MessageBarInteractionOptions? options = null, CancellationToken cancellationToken = default)
@@ -123,8 +123,8 @@ public async Task<InteractionResult<bool>> PromptMessageBarAsync(string title, s
         var completion = await newState.CompletionTcs.Task.ConfigureAwait(false);
         var promptState = completion.State as bool?;
         return promptState == null
-            ? InteractionResultFactory.Cancel<bool>()
-            : InteractionResultFactory.Ok(promptState.Value);
+            ? InteractionResult.Cancel<bool>()
+            : InteractionResult.Ok(promptState.Value);
     }
 
     // For testing.
@@ -221,6 +221,12 @@ internal async Task CompleteInteractionAsync(int interactionId, Func<Interaction
         }
     }
 
+    /// <summary>
+    /// Runs validation for the inputs interaction.
+    /// </summary>
+    /// <returns>
+    /// true if validation passed, false if there were validation errors.
+    /// </returns>
     private async Task<bool> RunValidationAsync(Interaction interactionState, InteractionCompletionState result, CancellationToken cancellationToken)
     {
         if (result.Complete && interactionState.InteractionInfo is Interaction.InputsInteractionInfo inputsInfo)
@@ -245,7 +251,7 @@ private async Task<bool> RunValidationAsync(Interaction interactionState, Intera
                     };
                     await validationCallback(context).ConfigureAwait(false);
 
-                    return context.HasErrors;
+                    return !context.HasErrors;
                 }
             }
         }
@@ -306,19 +312,6 @@ internal class InteractionCollection : KeyedCollection<int, Interaction>
     protected override int GetKeyForItem(Interaction item) => item.InteractionId;
 }
 
-internal static class InteractionResultFactory
-{
-    internal static InteractionResult<T> Ok<T>(T result)
-    {
-        return new InteractionResult<T>(result, canceled: false);
-    }
-
-    internal static InteractionResult<T> Cancel<T>(T? data = default)
-    {
-        return new InteractionResult<T>(data ?? default, canceled: true);
-    }
-}
-
 [DebuggerDisplay("State = {State}, Complete = {Complete}")]
 internal sealed class InteractionCompletionState
 {