Add request tracing for Aspire usage

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

@@ -1331,6 +1331,8 @@ private void EnsureAssemblyInspected()
 
                     _requestTracingOptions.FeatureManagementAspNetCoreVersion = TracingUtils.GetAssemblyVersion(RequestTracingConstants.FeatureManagementAspNetCoreAssemblyName);
 
+                    _requestTracingOptions.AspireComponentVersion = TracingUtils.GetAssemblyVersion(RequestTracingConstants.AspireComponentAssemblyName);
+
                     if (TracingUtils.GetAssemblyVersion(RequestTracingConstants.SignalRAssemblyName) != null)
                     {
                         _requestTracingOptions.IsSignalRUsed = true;

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

@@ -24,6 +24,7 @@ internal class RequestTracingConstants
         public const string EnvironmentKey = "Env";
         public const string FeatureManagementVersionKey = "FMVer";
         public const string FeatureManagementAspNetCoreVersionKey = "FMANCVer";
+        public const string AspireComponentVersionKey = "ACVer";
         public const string DevEnvironmentValue = "Dev";
         public const string KeyVaultConfiguredTag = "UsesKeyVault";
         public const string KeyVaultRefreshConfiguredTag = "RefreshesKeyVault";
@@ -53,6 +54,7 @@ internal class RequestTracingConstants
 
         public const string FeatureManagementAssemblyName = "Microsoft.FeatureManagement";
         public const string FeatureManagementAspNetCoreAssemblyName = "Microsoft.FeatureManagement.AspNetCore";
+        public const string AspireComponentAssemblyName = "Aspire.Microsoft.Extensions.Configuration.AzureAppConfiguration";
         public const string SignalRAssemblyName = "Microsoft.AspNetCore.SignalR";
 
         public const string Delimiter = "+";

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

@@ -50,6 +50,11 @@ internal class RequestTracingOptions
         /// </summary>
         public string FeatureManagementAspNetCoreVersion { get; set; }
 
+        /// <summary>
+        /// Version of the Aspire.Microsoft.Extensions.Configuration.AzureAppConfiguration assembly, if present in the application.
+        /// </summary>
+        public string AspireComponentVersion { get; set; }
+
         /// <summary>
         /// Flag to indicate whether Microsoft.AspNetCore.SignalR assembly is present in the application.
         /// </summary>

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

@@ -181,6 +181,11 @@ private static string CreateCorrelationContextHeader(RequestType requestType, Re
                 correlationContextKeyValues.Add(new KeyValuePair<string, string>(RequestTracingConstants.FeatureManagementAspNetCoreVersionKey, requestTracingOptions.FeatureManagementAspNetCoreVersion));
             }
 
+            if (requestTracingOptions.AspireComponentVersion != null)
+            {
+                correlationContextKeyValues.Add(new KeyValuePair<string, string>(RequestTracingConstants.AspireComponentVersionKey, requestTracingOptions.AspireComponentVersion));
+            }
+
             if (requestTracingOptions.UsesAnyTracingFeature())
             {
                 correlationContextKeyValues.Add(new KeyValuePair<string, string>(RequestTracingConstants.FeaturesKey, requestTracingOptions.CreateFeaturesString()));