Could not load type 'System.Linq.ParallelEnumerable'

[ryanthedev]

When published trimmed.

code

public static Task ParallelForEachAsync<T>(this IEnumerable<T> source, Func<T, Task> funcBody, int maxDoP = 4)
{
	async Task AwaitPartition(IEnumerator<T> partition)
	{
		using (partition)
		{
			while (partition.MoveNext())
			{ await funcBody(partition.Current); }
		}
	}

	return Task.WhenAll(
		Partitioner
			.Create(source)
			.GetPartitions(maxDoP)
			.AsParallel()
			.Select(p => AwaitPartition(p)));
}

Exception

Application startup exception: System.AggregateException: One or more errors occurred. (Could not load type 'System.Linq.ParallelEnumerable' from assembly 'System.Console, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.)
 ---> System.TypeLoadException: Could not load type 'System.Linq.ParallelEnumerable' from assembly 'System.Console, Version=4.1.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
   at AA.Hydra.Zombies.CrossCutting.HelperExtensions.ParallelForEachAsync[T](IEnumerable`1 source, Func`2 funcBody, Int32 maxDoP)
   at AA.Hydra.Zombies.CrossCutting.HelperExtensions.ParallelForEachAsync[T](T[] source, Func`2 funcBody, Int32 maxDoP)
   at AA.Hydra.Zombies.Infrastructure.Repos.FileSystemRepo.GetAllAsync[T](CancellationToken cancellation)
   at AA.Hydra.Zombies.Application.ZombiesApi.InitCachedZombies()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Task.Wait()
   at AA.Hydra.Zombies.Application.ZombiesApi..ctor(IZombieProcessAdapterFactory zombieProcessAdapterFactory, IKeyValueRepo kvRepo, IArtifactAdapter artifactAdapter, IServiceMeshAdapter meshAdapter)
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitRootCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
   at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider.GetService(Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at AA.Hydra.Zombies.Startup.Configure(IApplicationBuilder app, IHostingEnvironment env)
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.<Build>b__0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.Configure(IApplicationBuilder app)
   at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.<Configure>g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
   at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder app)
   at Microsoft.AspNetCore.Hosting.WebHost.BuildApplication()

[vitek-karas]

Could you please try again with .NET 6+. All previous releases were only a preview of the trimming feature. In .NET 6+, publishing a trimmed app should either produce a warning, or the app should work.

Note that ASP.NET apps currently don't support trimming because the core ASP.NET libraries are not marked for trimming yet. The work is in progress (although slow): https://github.com/dotnet/aspnetcore/issues?q=is%3Aopen+is%3Aissue+label%3Alinker-friendliness