Light up System.ClientModel interface decorations on public API surface

src/dotnet/APIView/APIView/Languages/CompilationFactory.cs

@@ -13,7 +13,9 @@ public static class CompilationFactory
     {
         private static HashSet<string> AllowedAssemblies = new HashSet<string>(new[]
         {
-            "Microsoft.Bcl.AsyncInterfaces"
+            "Microsoft.Bcl.AsyncInterfaces",
+            "System.ClientModel"
+
         }, StringComparer.InvariantCultureIgnoreCase);
 
         public static IAssemblySymbol GetCompilation(string file)
@@ -24,7 +26,7 @@ public static IAssemblySymbol GetCompilation(string file)
             }
         }
 
-        public static IAssemblySymbol GetCompilation(Stream stream, Stream documentationStream)
+        public static IAssemblySymbol GetCompilation(Stream stream, Stream documentationStream, IEnumerable<string> dependencyPaths = null)
         {
             PortableExecutableReference reference;
 
@@ -59,6 +61,17 @@ public static IAssemblySymbol GetCompilation(Stream stream, Stream documentation
                     compilation = compilation.AddReferences(MetadataReference.CreateFromFile(tpl));
                 }
             }
+            if (dependencyPaths != null)
+            {
+                foreach (var dependencyFile in dependencyPaths)
+                {
+                    if (!File.Exists(dependencyFile) || !AllowedAssemblies.Contains(Path.GetFileNameWithoutExtension(dependencyFile)))
+                    {
+                        continue;
+                    }
+                    compilation = compilation.AddReferences(MetadataReference.CreateFromFile(dependencyFile));
+                }
+            }
 
             return (IAssemblySymbol)compilation.GetAssemblyOrModuleSymbol(reference);
         }

src/dotnet/APIView/APIViewWeb/APIViewWeb.csproj

@@ -57,6 +57,7 @@
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta2-19367-01" PrivateAssets="All" />
     <PackageReference Include="MongoDB.Driver" Version="2.23.1" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+    <PackageReference Include="NuGet.Protocol" Version="6.10.0" />
     <PackageReference Include="Octokit" Version="9.1.0" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.5.0" />
   </ItemGroup>

src/dotnet/APIView/APIViewWeb/Languages/CSharpLanguageService.cs

@@ -7,9 +7,15 @@
 using System.IO.Compression;
 using System.Linq;
 using System.Text.RegularExpressions;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Xml.Linq;
 using ApiView;
+using NuGet.Common;
+using NuGet.Packaging;
+using NuGet.Protocol;
+using NuGet.Protocol.Core.Types;
+using NuGet.Versioning;
 
 namespace APIViewWeb
 {
@@ -44,9 +50,10 @@ public override bool CanUpdate(string versionString)
             return versionString != CodeFileBuilder.CurrentVersion;
         }
 
-        public override Task<CodeFile> GetCodeFileAsync(string originalName, Stream stream, bool runAnalysis)
+        public override async Task<CodeFile> GetCodeFileAsync(string originalName, Stream stream, bool runAnalysis)
         {
             ZipArchive archive = null;
+            string dependencyFilesTempDir = null;
             try
             {
                 Stream dllStream = stream;
@@ -62,7 +69,7 @@ public override Task<CodeFile> GetCodeFileAsync(string originalName, Stream stre
                     var dllEntries = archive.Entries.Where(entry => IsDll(entry.Name)).ToArray();
                     if (dllEntries.Length == 0)
                     {
-                        return Task.FromResult(GetDummyReviewCodeFile(originalName, dependencies));
+                        return GetDummyReviewCodeFile(originalName, dependencies);
                     }
 
                     var dllEntry = dllEntries.First();
@@ -99,17 +106,24 @@ public override Task<CodeFile> GetCodeFileAsync(string originalName, Stream stre
                     }
                 }
 
-                var assemblySymbol = CompilationFactory.GetCompilation(dllStream, docStream);
+                dependencyFilesTempDir = await ExtractNugetDependencies(dependencies).ConfigureAwait(false);
+                var dependencyFilePaths = Directory.EnumerateFiles(dependencyFilesTempDir, "*.dll", SearchOption.AllDirectories);
+
+                var assemblySymbol = CompilationFactory.GetCompilation(dllStream, docStream, dependencyFilePaths);
                 if (assemblySymbol == null)
                 {
-                    return Task.FromResult(GetDummyReviewCodeFile(originalName, dependencies));
+                    return GetDummyReviewCodeFile(originalName, dependencies);
                 }
 
-                return Task.FromResult(new CodeFileBuilder().Build(assemblySymbol, runAnalysis, dependencies));
+                return new CodeFileBuilder().Build(assemblySymbol, runAnalysis, dependencies);
             }
             finally
             {
                 archive?.Dispose();
+                if (dependencyFilesTempDir != null && Directory.Exists(dependencyFilesTempDir))
+                {
+                    Directory.Delete(dependencyFilesTempDir, true);
+                }
             }
         }
 
@@ -132,13 +146,58 @@ private CodeFile GetDummyReviewCodeFile(string originalName, List<DependencyInfo
             CodeFileBuilder.BuildDependencies(builder, dependencies);
 
             return new CodeFile()
-            {                
+            {
                 Name = reviewName,
                 Language = "C#",
                 VersionString = CodeFileBuilder.CurrentVersion,
                 PackageName = packageName,
                 Tokens = builder.Tokens.ToArray()
             };
         }
+
+        /// <summary>
+        /// Resolves the NuGet package dependencies and extracts them to a temporary folder. It is the responsibility of teh caller to clean up the folder.
+        /// </summary>
+        /// <param name="dependencyInfos">The dependency infos</param>
+        /// <returns>A temporary path where the dependency files were extracted.</returns>
+        private async Task<string> ExtractNugetDependencies(List<DependencyInfo> dependencyInfos)
+        {
+            string tempFolder = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
+            SourceCacheContext cache = new SourceCacheContext();
+            SourceRepository repository = NuGet.Protocol.Core.Types.Repository.Factory.GetCoreV3("https://api.nuget.org/v3/index.json");
+            try
+            {
+                FindPackageByIdResource resource = await repository.GetResourceAsync<FindPackageByIdResource>().ConfigureAwait(false);
+                foreach (var dep in dependencyInfos)
+                {
+                    using (MemoryStream packageStream = new MemoryStream())
+                    {
+                        if (await resource.CopyNupkgToStreamAsync(
+                        dep.Name,
+                        new NuGetVersion(dep.Version),
+                        packageStream,
+                        cache,
+                        NullLogger.Instance,
+                        CancellationToken.None))
+                        {
+                            using PackageArchiveReader reader = new PackageArchiveReader(packageStream);
+                            NuspecReader nuspec = reader.NuspecReader;
+                            var file = reader.GetFiles().FirstOrDefault(f => f.EndsWith(dep.Name + ".dll"));
+                            if (file != null)
+                            {
+                                var fileInfo = new FileInfo(file);
+                                var path = Path.Combine(tempFolder, dep.Name, fileInfo.Name);
+                                var tmp = reader.ExtractFile(file, path, NullLogger.Instance);
+                            }
+                        }
+                    }
+                }
+            }
+            finally
+            {
+                cache.Dispose();
+            }
+            return tempFolder;
+        }
     }
 }