Azure · liliankasem · Oct 16, 2024 · Sep 2, 2024 · Sep 2, 2024
diff --git a/...Generators/FunctionMetadataProviderGenerator/FunctionMetadataProviderGenerator.Emitter.cs b/...Generators/FunctionMetadataProviderGenerator/FunctionMetadataProviderGenerator.Emitter.cs
@@ -49,7 +49,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                                  {
                                      var metadataList = new List<IFunctionMetadata>();
                          {{functionMetadataInfo}}
-                                     return Task.FromResult(metadataList.ToImmutableArray());
+                                     return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                                  }
                              }
 

diff --git a/sdk/release_notes.md b/sdk/release_notes.md
@@ -12,4 +12,6 @@
 
 ### Microsoft.Azure.Functions.Worker.Sdk.Generators <version>
 
+- Use full namespace for `Task.FromResult` in function metadata provider generator to avoid namespace conflict (#2681)
+
 - <entry>
diff --git a/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/AmbiguousNamespaceTests.cs b/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/AmbiguousNamespaceTests.cs
@@ -0,0 +1,146 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for license information.
+
+using System.Reflection;
+using System.Threading.Tasks;
+using Microsoft.Azure.Functions.Worker.Sdk.Generators;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Xunit;
+
+namespace Microsoft.Azure.Functions.SdkGeneratorTests
+{
+    public partial class FunctionMetadataProviderGeneratorTests
+    {
+        public class AmbiguousNamespaceTests
+        {
+            private readonly Assembly[] _referencedExtensionAssemblies;
+
+            public AmbiguousNamespaceTests()
+            {
+                // load all extensions used in tests (match extensions tested on E2E app? Or include ALL extensions?)
+                var abstractionsExtension = Assembly.LoadFrom("Microsoft.Azure.Functions.Worker.Extensions.Abstractions.dll");
+                var httpExtension = Assembly.LoadFrom("Microsoft.Azure.Functions.Worker.Extensions.Http.dll");
+                var hostingExtension = typeof(HostBuilder).Assembly;
+                var diExtension = typeof(DefaultServiceProviderFactory).Assembly;
+                var hostingAbExtension = typeof(IHost).Assembly;
+                var diAbExtension = typeof(IServiceCollection).Assembly;
+
+                _referencedExtensionAssemblies = new[]
+                {
+                    abstractionsExtension,
+                    httpExtension,
+                    hostingExtension,
+                    hostingAbExtension,
+                    diExtension,
+                    diAbExtension
+                };
+            }
+
+            [Theory]
+            [InlineData(LanguageVersion.CSharp7_3)]
+            [InlineData(LanguageVersion.CSharp8)]
+            [InlineData(LanguageVersion.CSharp9)]
+            [InlineData(LanguageVersion.CSharp10)]
+            [InlineData(LanguageVersion.CSharp11)]
+            [InlineData(LanguageVersion.Latest)]
+            public async Task NamespaceEndingWithTask(LanguageVersion languageVersion)
+            {
+                string inputCode = """
+                using System;
+                using System.Collections.Generic;
+                using Microsoft.Azure.Functions.Worker;
+                using Microsoft.Azure.Functions.Worker.Http;
+
+                namespace MyCompany.Task
+                {
+                    public static class HttpTriggerSimple
+                    {
+                        [Function(nameof(HttpTriggerSimple))]
+                        public static HttpResponseData Run([HttpTrigger(AuthorizationLevel.User, "get")] HttpRequestData req, FunctionContext c)
+                        {
+                            return Run(req);
+                        }
+
+                        public static HttpResponseData Run(HttpRequestData req)
+                            => req.CreateResponse(System.Net.HttpStatusCode.OK);
+                    }
+                }
+                """;
+
+                string expectedGeneratedFileName = $"GeneratedFunctionMetadataProvider.g.cs";
+                string expectedOutput = """
+                // <auto-generated/>
+                using System;
+                using System.Collections.Generic;
+                using System.Collections.Immutable;
+                using System.Text.Json;
+                using System.Threading.Tasks;
+                using Microsoft.Azure.Functions.Worker;
+                using Microsoft.Azure.Functions.Worker.Core.FunctionMetadata;
+                using Microsoft.Extensions.DependencyInjection;
+                using Microsoft.Extensions.Hosting;
+
+                namespace TestProject
+                {
+                    /// <summary>
+                    /// Custom <see cref="IFunctionMetadataProvider"/> implementation that returns function metadata definitions for the current worker."/>
+                    /// </summary>
+                    [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Never)]
+                    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+                    public class GeneratedFunctionMetadataProvider : IFunctionMetadataProvider
+                    {
+                        /// <inheritdoc/>
+                        public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string directory)
+                        {
+                            var metadataList = new List<IFunctionMetadata>();
+                            var Function0RawBindings = new List<string>();
+                            Function0RawBindings.Add(@"{""name"":""req"",""type"":""httpTrigger"",""direction"":""In"",""authLevel"":""User"",""methods"":[""get""]}");
+                            Function0RawBindings.Add(@"{""name"":""$return"",""type"":""http"",""direction"":""Out""}");
+
+                            var Function0 = new DefaultFunctionMetadata
+                            {
+                                Language = "dotnet-isolated",
+                                Name = "HttpTriggerSimple",
+                                EntryPoint = "MyCompany.Task.HttpTriggerSimple.Run",
+                                RawBindings = Function0RawBindings,
+                                ScriptFile = "TestProject.dll"
+                            };
+                            metadataList.Add(Function0);
+
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
+                        }
+                    }
+
+                    /// <summary>
+                    /// Extension methods to enable registration of the custom <see cref="IFunctionMetadataProvider"/> implementation generated for the current worker.
+                    /// </summary>
+                    public static class WorkerHostBuilderFunctionMetadataProviderExtension
+                    {
+                        ///<summary>
+                        /// Adds the GeneratedFunctionMetadataProvider to the service collection.
+                        /// During initialization, the worker will return generated function metadata instead of relying on the Azure Functions host for function indexing.
+                        ///</summary>
+                        public static IHostBuilder ConfigureGeneratedFunctionMetadataProvider(this IHostBuilder builder)
+                        {
+                            builder.ConfigureServices(s => 
+                            {
+                                s.AddSingleton<IFunctionMetadataProvider, GeneratedFunctionMetadataProvider>();
+                            });
+                            return builder;
+                        }
+                    }
+                }
+                """;
+
+                await TestHelpers.RunTestAsync<FunctionMetadataProviderGenerator>(
+                    _referencedExtensionAssemblies,
+                    inputCode,
+                    expectedGeneratedFileName,
+                    expectedOutput,
+                    languageVersion: languageVersion);
+            }
+        }
+    }
+}
diff --git a/...k.Generator.Tests/FunctionMetadataProviderGeneratorTests/AutoConfigureStartupTypeTests.cs b/...k.Generator.Tests/FunctionMetadataProviderGeneratorTests/AutoConfigureStartupTypeTests.cs
@@ -112,7 +112,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
             }};
             metadataList.Add(Function0);
 
-            return Task.FromResult(metadataList.ToImmutableArray());
+            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
         }}
     }}
 

diff --git a/...Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/DependentAssemblyTest.NetFx.cs b/...Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/DependentAssemblyTest.NetFx.cs
@@ -135,7 +135,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function2);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 

diff --git a/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/DependentAssemblyTest.cs b/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/DependentAssemblyTest.cs
@@ -166,7 +166,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function5);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -307,7 +307,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function4);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 

diff --git a/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/EventHubsBindingsTests.cs b/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/EventHubsBindingsTests.cs
@@ -124,7 +124,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                                 };
                                 metadataList.Add(Function0);
 
-                                return Task.FromResult(metadataList.ToImmutableArray());
+                                return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                             }
                         }
 
@@ -258,7 +258,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -361,7 +361,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -552,7 +552,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function3);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -693,7 +693,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function1);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -821,7 +821,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function1);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 

diff --git a/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/HttpTriggerTests.cs b/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/HttpTriggerTests.cs
@@ -106,7 +106,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -208,7 +208,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -315,7 +315,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -442,7 +442,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function1);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 

diff --git a/...erator.Tests/FunctionMetadataProviderGeneratorTests/IntegratedTriggersAndBindingsTests.cs b/...erator.Tests/FunctionMetadataProviderGeneratorTests/IntegratedTriggersAndBindingsTests.cs
@@ -158,7 +158,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function1);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -299,7 +299,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function1);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -423,7 +423,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -532,7 +532,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -627,7 +627,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -723,7 +723,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -854,7 +854,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function2);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -987,7 +987,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function2);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 

diff --git a/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/KafkaTests.cs b/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/KafkaTests.cs
@@ -114,7 +114,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 

diff --git a/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/NestedTypesTest.cs b/test/Sdk.Generator.Tests/FunctionMetadataProviderGeneratorTests/NestedTypesTest.cs
@@ -112,7 +112,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
 
@@ -216,7 +216,7 @@ public Task<ImmutableArray<IFunctionMetadata>> GetFunctionMetadataAsync(string d
                             };
                             metadataList.Add(Function0);
 
-                            return Task.FromResult(metadataList.ToImmutableArray());
+                            return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
                         }
                     }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -12,4 +12,6 @@

		### Microsoft.Azure.Functions.Worker.Sdk.Generators <version>

		- Use full namespace for `Task.FromResult` in function metadata provider generator to avoid namespace conflict (#2681)

		- <entry>
-Original file line number
+Diff line change
@@ Expand Up @@
                 }};
                 metadataList.Add(Function0);
-                return Task.FromResult(metadataList.ToImmutableArray());
+                return global::System.Threading.Tasks.Task.FromResult(metadataList.ToImmutableArray());
             }}
         }}
@@ Expand Down @@