Merge main to release/stable/v8

src/Microsoft.Azure.AppConfiguration.AspNetCore/Microsoft.Azure.AppConfiguration.AspNetCore.csproj

@@ -21,7 +21,7 @@
   <!-- Nuget Package Version Settings -->
 
   <PropertyGroup>
-    <OfficialVersion>8.1.1</OfficialVersion>
+    <OfficialVersion>8.1.2</OfficialVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(CDP_PATCH_NUMBER)'!='' AND '$(CDP_BUILD_TYPE)'=='Official'">

src/Microsoft.Azure.AppConfiguration.Functions.Worker/Microsoft.Azure.AppConfiguration.Functions.Worker.csproj

@@ -24,7 +24,7 @@
   <!-- Nuget Package Version Settings -->
 
   <PropertyGroup>
-    <OfficialVersion>8.1.1</OfficialVersion>
+    <OfficialVersion>8.1.2</OfficialVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(CDP_PATCH_NUMBER)'!='' AND '$(CDP_BUILD_TYPE)'=='Official'">

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/AzureAppConfigurationExtensions.cs

@@ -3,6 +3,7 @@
 //
 using Microsoft.Extensions.Configuration.AzureAppConfiguration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
 using System;
 using System.Collections.Generic;
 using System.Security;
@@ -99,11 +100,11 @@ public static IServiceCollection AddAzureAppConfiguration(this IServiceCollectio
             if (!_isProviderDisabled)
             {
                 services.AddLogging();
-                services.AddSingleton<IConfigurationRefresherProvider, AzureAppConfigurationRefresherProvider>();
+                services.TryAddSingleton<IConfigurationRefresherProvider, AzureAppConfigurationRefresherProvider>();
             }
             else
             {
-                services.AddSingleton<IConfigurationRefresherProvider, EmptyConfigurationRefresherProvider>();
+                services.TryAddSingleton<IConfigurationRefresherProvider, EmptyConfigurationRefresherProvider>();
             }
 
             return services;

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/AzureAppConfigurationProvider.cs

@@ -118,6 +118,13 @@ public AzureAppConfigurationProvider(IConfigurationClientManager configClientMan
 
             if (options.RegisterAllEnabled)
             {
+                if (options.KvCollectionRefreshInterval <= TimeSpan.Zero)
+                {
+                    throw new ArgumentException(
+                        $"{nameof(options.KvCollectionRefreshInterval)} must be greater than zero seconds when using RegisterAll for refresh",
+                        nameof(options));
+                }
+
                 MinRefreshInterval = TimeSpan.FromTicks(Math.Min(minWatcherRefreshInterval.Ticks, options.KvCollectionRefreshInterval.Ticks));
             }
             else if (hasWatchers)
@@ -206,7 +213,7 @@ public async Task RefreshAsync(CancellationToken cancellationToken)
                     var utcNow = DateTimeOffset.UtcNow;
                     IEnumerable<KeyValueWatcher> refreshableIndividualKvWatchers = _options.IndividualKvWatchers.Where(kvWatcher => utcNow >= kvWatcher.NextRefreshTime);
                     IEnumerable<KeyValueWatcher> refreshableFfWatchers = _options.FeatureFlagWatchers.Where(ffWatcher => utcNow >= ffWatcher.NextRefreshTime);
-                    bool isRefreshDue = utcNow >= _nextCollectionRefreshTime;
+                    bool isRefreshDue = _options.RegisterAllEnabled && utcNow >= _nextCollectionRefreshTime;
 
                     // Skip refresh if mappedData is loaded, but none of the watchers or adapters are refreshable.
                     if (_mappedData != null &&
@@ -412,7 +419,7 @@ await ExecuteWithFailOverPolicyAsync(clients, async (client) =>
                         }
                     }
 
-                    if (isRefreshDue)
+                    if (_options.RegisterAllEnabled && isRefreshDue)
                     {
                         _nextCollectionRefreshTime = DateTimeOffset.UtcNow.Add(_options.KvCollectionRefreshInterval);
                     }
@@ -590,9 +597,21 @@ private async Task<Dictionary<string, string>> PrepareData(Dictionary<string, Co
             // Reset old feature flag tracing in order to track the information present in the current response from server.
             _options.FeatureFlagTracing.ResetFeatureFlagTracing();
 
+            // Reset old request tracing values for content type
+            if (_requestTracingEnabled && _requestTracingOptions != null)
+            {
+                _requestTracingOptions.ResetAiConfigurationTracing();
+            }
+
             foreach (KeyValuePair<string, ConfigurationSetting> kvp in data)
             {
                 IEnumerable<KeyValuePair<string, string>> keyValuePairs = null;
+
+                if (_requestTracingEnabled && _requestTracingOptions != null)
+                {
+                    _requestTracingOptions.UpdateAiConfigurationTracing(kvp.Value.ContentType);
+                }
+
                 keyValuePairs = await ProcessAdapters(kvp.Value, cancellationToken).ConfigureAwait(false);
 
                 foreach (KeyValuePair<string, string> kv in keyValuePairs)
@@ -629,7 +648,7 @@ private async Task LoadAsync(bool ignoreFailures, CancellationToken cancellation
                 {
                     IEnumerable<ConfigurationClient> clients = _configClientManager.GetClients();
 
-                    if (_requestTracingOptions != null)
+                    if (_requestTracingEnabled && _requestTracingOptions != null)
                     {
                         _requestTracingOptions.ReplicaCount = clients.Count() - 1;
                     }

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/AzureAppConfigurationRefresherProvider.cs

@@ -13,11 +13,38 @@ internal class AzureAppConfigurationRefresherProvider : IConfigurationRefresherP
     {
         private static readonly PropertyInfo _propertyInfo = typeof(ChainedConfigurationProvider).GetProperty("Configuration", BindingFlags.Public | BindingFlags.Instance);
 
-        public IEnumerable<IConfigurationRefresher> Refreshers { get; }
+        private readonly IConfiguration _configuration;
+        private readonly ILoggerFactory _loggerFactory;
+        private IEnumerable<IConfigurationRefresher> _refreshers;
+        private bool _rediscoveredRefreshers = false;
 
-        public AzureAppConfigurationRefresherProvider(IConfiguration configuration, ILoggerFactory _loggerFactory)
+        public IEnumerable<IConfigurationRefresher> Refreshers
         {
-            var configurationRoot = configuration as IConfigurationRoot;
+            get
+            {
+                // Ensure latest refreshers are discovered if the configuration has changed since the constructor was called
+                if (!_rediscoveredRefreshers)
+                {
+                    _refreshers = DiscoverRefreshers();
+
+                    _rediscoveredRefreshers = true;
+                }
+
+                return _refreshers;
+            }
+        }
+
+        public AzureAppConfigurationRefresherProvider(IConfiguration configuration, ILoggerFactory loggerFactory)
+        {
+            _configuration = configuration ?? throw new ArgumentNullException(nameof(configuration));
+            _loggerFactory = loggerFactory;
+
+            _refreshers = DiscoverRefreshers();
+        }
+
+        private IEnumerable<IConfigurationRefresher> DiscoverRefreshers()
+        {
+            var configurationRoot = _configuration as IConfigurationRoot;
             var refreshers = new List<IConfigurationRefresher>();
 
             FindRefreshers(configurationRoot, _loggerFactory, refreshers);
@@ -27,7 +54,7 @@ public AzureAppConfigurationRefresherProvider(IConfiguration configuration, ILog
                 throw new InvalidOperationException("Unable to access the Azure App Configuration provider. Please ensure that it has been configured correctly.");
             }
 
-            Refreshers = refreshers;
+            return refreshers;
         }
 
         private void FindRefreshers(IConfigurationRoot configurationRoot, ILoggerFactory loggerFactory, List<IConfigurationRefresher> refreshers)

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/AzureKeyVaultReference/AzureKeyVaultKeyValueAdapter.cs

@@ -4,9 +4,12 @@
 using Azure;
 using Azure.Data.AppConfiguration;
 using Azure.Security.KeyVault.Secrets;
+using Microsoft.Extensions.Configuration.AzureAppConfiguration.Extensions;
+using Microsoft.Extensions.Configuration.AzureAppConfiguration.FeatureManagement;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net.Mime;
 using System.Text.Json;
 using System.Threading;
 using System.Threading.Tasks;
@@ -72,8 +75,15 @@ KeyVaultReferenceException CreateKeyVaultReferenceException(string message, Conf
 
         public bool CanProcess(ConfigurationSetting setting)
         {
-            string contentType = setting?.ContentType?.Split(';')[0].Trim();
-            return string.Equals(contentType, KeyVaultConstants.ContentType);
+            if (setting == null ||
+                string.IsNullOrWhiteSpace(setting.Value) ||
+                string.IsNullOrWhiteSpace(setting.ContentType))
+            {
+                return false;
+            }
+
+            return setting.ContentType.TryParseContentType(out ContentType contentType)
+                && contentType.IsKeyVaultReference();
         }
 
         public void OnChangeDetected(ConfigurationSetting setting = null)

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/ConfigurationSettingPageExtensions.cs

@@ -1,5 +1,5 @@
-using Azure.Data.AppConfiguration;
-using Azure;
+using Azure;
+using Azure.Data.AppConfiguration;
 using System.Collections.Generic;
 
 namespace Microsoft.Extensions.Configuration.AzureAppConfiguration

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/Constants/RequestTracingConstants.cs

@@ -31,6 +31,9 @@ internal class RequestTracingConstants
         public const string ReplicaCountKey = "ReplicaCount";
         public const string FeaturesKey = "Features";
         public const string LoadBalancingEnabledTag = "LB";
+        public const string AIConfigurationTag = "AI";
+        public const string AIChatCompletionConfigurationTag = "AICC";
+
         public const string SignalRUsedTag = "SignalR";
         public const string FailoverRequestTag = "Failover";
         public const string PushRefreshTag = "PushRefresh";
@@ -54,5 +57,8 @@ internal class RequestTracingConstants
         public const string SignalRAssemblyName = "Microsoft.AspNetCore.SignalR";
 
         public const string Delimiter = "+";
+
+        public const string AIMimeProfile = "https://azconfig.io/mime-profiles/ai";
+        public const string AIChatCompletionMimeProfile = "https://azconfig.io/mime-profiles/ai/chat-completion";
     }
 }

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/Extensions/ContentTypeExtensions.cs

@@ -0,0 +1,85 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+//
+using System.Linq;
+using System;
+using System.Net.Mime;
+using Microsoft.Extensions.Configuration.AzureAppConfiguration.AzureKeyVault;
+using Microsoft.Extensions.Configuration.AzureAppConfiguration.FeatureManagement;
+using System.Collections.Generic;
+
+namespace Microsoft.Extensions.Configuration.AzureAppConfiguration.Extensions
+{
+    internal static class ContentTypeExtensions
+    {
+        public static bool IsAi(this ContentType contentType)
+        {
+            return contentType != null &&
+                   contentType.IsJson() &&
+                   !contentType.IsFeatureFlag() &&
+                   !contentType.IsKeyVaultReference() &&
+                   contentType.Parameters.ContainsKey("profile") &&
+                   !string.IsNullOrEmpty(contentType.Parameters["profile"]) &&
+                   contentType.Parameters["profile"].StartsWith(RequestTracingConstants.AIMimeProfile);
+        }
+
+        public static bool IsAiChatCompletion(this ContentType contentType)
+        {
+            return contentType != null &&
+                   contentType.IsJson() &&
+                   !contentType.IsFeatureFlag() &&
+                   !contentType.IsKeyVaultReference() &&
+                   contentType.Parameters.ContainsKey("profile") &&
+                   !string.IsNullOrEmpty(contentType.Parameters["profile"]) &&
+                   contentType.Parameters["profile"].StartsWith(RequestTracingConstants.AIChatCompletionMimeProfile);
+        }
+
+        public static bool IsJson(this ContentType contentType)
+        {
+            if (contentType == null)
+            {
+                return false;
+            }
+
+            string acceptedMainType = "application";
+            string acceptedSubType = "json";
+
+            ReadOnlySpan<char> mediaTypeSpan = contentType.MediaType.AsSpan();
+
+            // Since contentType has been validated using System.Net.Mime.ContentType,
+            // mediaType will always have exactly 2 parts after splitting on '/'
+            int slashIndex = mediaTypeSpan.IndexOf('/');
+
+            if (mediaTypeSpan.Slice(0, slashIndex).Equals(acceptedMainType.AsSpan(), StringComparison.OrdinalIgnoreCase))
+            {
+                ReadOnlySpan<char> subTypeSpan = mediaTypeSpan.Slice(slashIndex + 1);
+
+                while (!subTypeSpan.IsEmpty)
+                {
+                    int plusIndex = subTypeSpan.IndexOf('+');
+
+                    ReadOnlySpan<char> currentSubType = plusIndex == -1 ? subTypeSpan : subTypeSpan.Slice(0, plusIndex);
+
+                    if (currentSubType.Equals(acceptedSubType.AsSpan(), StringComparison.OrdinalIgnoreCase))
+                    {
+                        return true;
+                    }
+
+                    subTypeSpan = plusIndex == -1 ? ReadOnlySpan<char>.Empty : subTypeSpan.Slice(plusIndex + 1);
+                }
+            }
+
+            return false;
+        }
+
+        public static bool IsFeatureFlag(this ContentType contentType)
+        {
+            return contentType.MediaType.Equals(FeatureManagementConstants.ContentType);
+        }
+
+        public static bool IsKeyVaultReference(this ContentType contentType)
+        {
+            return contentType.MediaType.Equals(KeyVaultConstants.ContentType);
+        }
+    }
+}

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/Extensions/StringExtensions.cs

@@ -1,10 +1,40 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 //
+using System;
+using System.Net.Mime;
+
 namespace Microsoft.Extensions.Configuration.AzureAppConfiguration.Extensions
 {
     internal static class StringExtensions
     {
+        public static bool TryParseContentType(this string contentTypeString, out ContentType contentType)
+        {
+            contentType = null;
+
+            if (string.IsNullOrWhiteSpace(contentTypeString))
+            {
+                return false;
+            }
+
+            try
+            {
+                contentType = new ContentType(contentTypeString.Trim());
+
+                return true;
+            }
+            catch (FormatException)
+            {
+                return false;
+            }
+            catch (IndexOutOfRangeException)
+            {
+                // Bug in System.Net.Mime.ContentType throws this if contentType is "xyz/"
+                // https://github.com/dotnet/runtime/issues/39337
+                return false;
+            }
+        }
+
         public static string NormalizeNull(this string s)
         {
             return s == LabelFilter.Null ? null : s;

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/FeatureManagement/FeatureManagementKeyValueAdapter.cs

@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net.Mime;
 using System.Security.Cryptography;
 using System.Text;
 using System.Text.Json;
@@ -45,10 +46,20 @@ public Task<IEnumerable<KeyValuePair<string, string>>> ProcessKeyValue(Configura
 
         public bool CanProcess(ConfigurationSetting setting)
         {
-            string contentType = setting?.ContentType?.Split(';')[0].Trim();
+            if (setting == null ||
+                string.IsNullOrWhiteSpace(setting.Value) ||
+                string.IsNullOrWhiteSpace(setting.ContentType))
+            {
+                return false;
+            }
+
+            if (setting.Key.StartsWith(FeatureManagementConstants.FeatureFlagMarker))
+            {
+                return true;
+            }
 
-            return string.Equals(contentType, FeatureManagementConstants.ContentType) ||
-                                 setting.Key.StartsWith(FeatureManagementConstants.FeatureFlagMarker);
+            return setting.ContentType.TryParseContentType(out ContentType contentType) &&
+                contentType.IsFeatureFlag();
         }
 
         public bool NeedsRefresh()

src/Microsoft.Extensions.Configuration.AzureAppConfiguration/IConfigurationSettingPageIterator.cs

@@ -1,5 +1,5 @@
-using Azure.Data.AppConfiguration;
-using Azure;
+using Azure;
+using Azure.Data.AppConfiguration;
 using System.Collections.Generic;
 
 namespace Microsoft.Extensions.Configuration.AzureAppConfiguration