Added cancellation token and configureawait.

Author: jimmyca15

examples/FeatureFlagDemo/HttpContextTargetingContextAccessor.cs

@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Security.Claims;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace FeatureFlagDemo
@@ -23,7 +24,7 @@ public HttpContextTargetingContextAccessor(IHttpContextAccessor httpContextAcces
             _httpContextAccessor = httpContextAccessor ?? throw new ArgumentNullException(nameof(httpContextAccessor));
         }
 
-        public ValueTask<TargetingContext> GetContextAsync()
+        public ValueTask<TargetingContext> GetContextAsync(CancellationToken _)
         {
             HttpContext httpContext = _httpContextAccessor.HttpContext;
 

src/Microsoft.FeatureManagement.AspNetCore/TagHelpers/FeatureTagHelper.cs

@@ -56,8 +56,8 @@ public override async Task ProcessAsync(TagHelperContext context, TagHelperOutpu
                 IEnumerable<string> names = Name.Split(',').Select(n => n.Trim());
 
                 enabled = Requirement == RequirementType.All ?
-                    await names.All(async n => await _featureManager.IsEnabledAsync(n, CancellationToken.None).ConfigureAwait(false)) :
-                    await names.Any(async n => await _featureManager.IsEnabledAsync(n, CancellationToken.None).ConfigureAwait(false));
+                    await names.All(async n => await _featureManager.IsEnabledAsync(n, CancellationToken.None).ConfigureAwait(false)).ConfigureAwait(false) :
+                    await names.Any(async n => await _featureManager.IsEnabledAsync(n, CancellationToken.None).ConfigureAwait(false)).ConfigureAwait(false);
             }
 
             if (Negate)

src/Microsoft.FeatureManagement/Targeting/ITargetingContextAccessor.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT license.
 //
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace Microsoft.FeatureManagement.FeatureFilters
@@ -13,7 +14,8 @@ public interface ITargetingContextAccessor
         /// <summary>
         /// Retrieves the current targeting context.
         /// </summary>
+        /// <param name="cancellationToken">The cancellation token to cancel the operation.</param>
         /// <returns>The current targeting context.</returns>
-        ValueTask<TargetingContext> GetContextAsync();
+        ValueTask<TargetingContext> GetContextAsync(CancellationToken cancellationToken);
     }
 }

src/Microsoft.FeatureManagement/Targeting/TargetingFilter.cs

@@ -49,7 +49,7 @@ public async Task<bool> EvaluateAsync(FeatureFilterEvaluationContext context, Ca
 
             //
             // Acquire targeting context via accessor
-            TargetingContext targetingContext = await _contextAccessor.GetContextAsync().ConfigureAwait(false);
+            TargetingContext targetingContext = await _contextAccessor.GetContextAsync(cancellationToken).ConfigureAwait(false);
 
             //
             // Ensure targeting can be performed

tests/Tests.FeatureManagement/OnDemandTargetingContextAccessor.cs

@@ -2,6 +2,7 @@
 // Licensed under the MIT license.
 //
 using Microsoft.FeatureManagement.FeatureFilters;
+using System.Threading;
 using System.Threading.Tasks;
 
 namespace Tests.FeatureManagement
@@ -10,7 +11,7 @@ class OnDemandTargetingContextAccessor : ITargetingContextAccessor
     {
         public TargetingContext Current { get; set; }
 
-        public ValueTask<TargetingContext> GetContextAsync()
+        public ValueTask<TargetingContext> GetContextAsync(CancellationToken _)
         {
             return new ValueTask<TargetingContext>(Current);
         }