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Using MetadataLoadContext to load assmebly #4926

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24 changes: 11 additions & 13 deletions src/dotnet-svcutil/lib/src/CommandProcessorOptions.cs
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Threading;
using System.Threading.Tasks;

Expand Down Expand Up @@ -807,25 +808,22 @@ private void LoadReferencedAssemblies()
{
// we should not load the ServiceModel assemblies as types will clash with the private code types.
var loadableReferences = this.References.Where(r => !TargetFrameworkHelper.ServiceModelPackages.Any(s => s.Name == r.Name));

string projFolder = Path.Combine(this.BootstrapPath.FullName, nameof(SvcutilBootstrapper));
DirectoryInfo directoryInfo = new DirectoryInfo(projFolder);


foreach (ProjectDependency reference in loadableReferences)
{
Assembly assembly = null;

if (this.ToolContext == OperationalContext.Infrastructure)
{
string projFolder = Path.Combine(this.BootstrapPath.FullName, nameof(SvcutilBootstrapper));
DirectoryInfo directoryInfo = new DirectoryInfo(projFolder);
FileInfo assemblyFile = directoryInfo.GetFiles(reference.AssemblyName + ".*", SearchOption.AllDirectories).FirstOrDefault();
if (assemblyFile != null)
{
assembly = Assembly.LoadFrom(assemblyFile.FullName);
}
}
else
FileInfo assemblyFile = directoryInfo.GetFiles(reference.AssemblyName + ".*", SearchOption.AllDirectories).FirstOrDefault();

if (assemblyFile != null)
{
assembly = TypeLoader.LoadAssembly(reference.AssemblyName);
assembly = TypeLoader.LoadAssembly(assemblyFile.FullName);
}

if (assembly != null)
{
if (!this.ReferencedAssemblies.Contains(assembly))
Expand Down
20 changes: 8 additions & 12 deletions src/dotnet-svcutil/lib/src/TypeLoader.cs
Original file line number Diff line number Diff line change
Expand Up @@ -5,8 +5,8 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Runtime.Serialization;

namespace Microsoft.Tools.ServiceModel.Svcutil
Expand All @@ -17,16 +17,15 @@ internal static class TypeLoader

static public Assembly LoadAssembly(string path)
{
string DotDll = ".dll";
string DotExe = ".exe";
string[] runtimeAssemblies = Directory.GetFiles(RuntimeEnvironment.GetRuntimeDirectory(), "*.dll");
var paths = new List<string>(runtimeAssemblies);

if (path.EndsWith(DotDll, StringComparison.OrdinalIgnoreCase) || path.EndsWith(DotExe, StringComparison.OrdinalIgnoreCase))
{
path = path.Remove(path.Length - DotDll.Length, DotDll.Length);
}
var resolver = new PathAssemblyResolver(paths);
var mlc = new MetadataLoadContext(resolver);

try
{
return Assembly.Load(new AssemblyName(path));
return mlc.LoadFromAssemblyPath(path);
}
catch (Exception ex)
{
Expand All @@ -49,10 +48,7 @@ static public Type[] LoadTypes(Assembly assembly, Verbosity verbosity)
listType.AddRange(Array.FindAll<Type>(rtle.Types, delegate (Type t)
{
return t != null;
}));

//type.Module or type.Assembly could throw if multiple assembly with same name get referenced but only one version get restored.
listType = listType.Except(GetUnAvailableTypes(listType)).ToList();
}));

if (verbosity > Verbosity.Normal)
{
Expand Down
1 change: 1 addition & 0 deletions src/dotnet-svcutil/lib/src/dotnet-svcutil-lib.csproj
Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,7 @@
<PackageReference Include="System.Reflection.Emit.Lightweight" Version="4.6.0" />
<PackageReference Include="System.Runtime.Loader" Version="4.3.0" />
<PackageReference Include="System.Reflection.DispatchProxy" Version="4.4.0" />
<PackageReference Include="System.Reflection.MetadataLoadContext" Version="6.0.0" />
</ItemGroup>

<!-- Include resx files here so that arcade will handle them correctly. -->
Expand Down