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Échec du démarrage d'ANCM InProcess en raison d'un runtimeconfig.json non valide

L'application est déployée en tant que service d'application (32 bits, .NET Core 2.2) sur Azure. Cela fonctionne très bien lorsque vous utilisez le standard AspNetCoreModule au lieu du plus récent AspNetCoreModuleV2 qui prend en charge le modèle d'hébergement InProcess.

Lorsque vous utilisez le nouveau modèle d'hébergement InProcess, l'erreur réelle est

Impossible de trouver le gestionnaire de demande inprocess. Sortie capturée lors de l'appel de hostfxr: runtimeconfig.json [D:\home\site\wwwroot\Foo.Api.runtimeconfig.json] non valide [D:\home\site\wwwroot\Foo.Api.runtimeconfig.dev.json]

Foo.Api.runtimeconfig.json à l'emplacement wwwroot

{
  "runtimeOptions": {
    "tfm": "netcoreapp2.2",
    "framework": {
      "name": "Microsoft.AspNetCore.App",
      "version": "2.2.0"
    },
    "configProperties": {
      "System.GC.Server": true
    }
  }
}

Web.config

<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath="dotnet" arguments=".\Foo.Api.dll" stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout" hostingModel="InProcess">
           <handlerSettings>
               <handlerSetting name="debugLevel" value="file" />
               <handlerSetting name="debugFile" value=".\logs\ancm.log" />
           </handlerSettings>
      </aspNetCore>
    </system.webServer>
  </location>
</configuration>

fichier journal ANCM

[aspnetcorev2.dll] Initializing logs for 'D:\Program Files (x86)\IIS\Asp.Net Core Module\V2\aspnetcorev2.dll'. Process Id: 12324.. File Version: 12.2.18296.0. Description: IIS ASP.NET Core Module V2. Commit: 61f1a70784dc0a32cf98f8ddd169c0293b0390ab.
[aspnetcorev2.dll] Detected app_offline file, creating polling application
[aspnetcorev2.dll] Application went offline
[aspnetcorev2.dll] Resolving hostfxr parameters for application: 'dotnet' arguments: '.\Foo.Api.dll' path: 'D:\home\site\wwwroot\'
[aspnetcorev2.dll] Known dotnet.exe location: ''
[aspnetcorev2.dll] Process path 'dotnet.exe' is dotnet, treating application as portable
[aspnetcorev2.dll] Resolving absolute path to dotnet.exe from 'dotnet.exe'
[aspnetcorev2.dll] Invoking where.exe to find dotnet.exe
[aspnetcorev2.dll] where.exe invocation returned: 'D:\Program Files (x86)\dotnet\dotnet.exe
D:\Program Files\dotnet\dotnet.exe
'
[aspnetcorev2.dll] Current process bitness type detected as isX64=0
[aspnetcorev2.dll] Processing entry 'D:\Program Files (x86)\dotnet\dotnet.exe'
[aspnetcorev2.dll] Binary type 0
[aspnetcorev2.dll] Found dotnet.exe via where.exe invocation at 'D:\Program Files (x86)\dotnet\dotnet.exe'
[aspnetcorev2.dll] Resolving absolute path to hostfxr.dll from 'D:\Program Files (x86)\dotnet\dotnet.exe'
[aspnetcorev2.dll] hostfxr.dll located at 'D:\Program Files (x86)\dotnet\Host\fxr\2.2.0\hostfxr.dll'
[aspnetcorev2.dll] Converted argument '.\Foo.Api.dll' to 'D:\home\site\wwwroot\.\Foo.Api.dll'
[aspnetcorev2.dll] Parsed hostfxr options: dotnet location: 'D:\Program Files (x86)\dotnet\dotnet.exe' hostfxr path: 'D:\Program Files (x86)\dotnet\Host\fxr\2.2.0\hostfxr.dll' arguments:
[aspnetcorev2.dll] Argument[0] = 'D:\Program Files (x86)\dotnet\dotnet.exe'
[aspnetcorev2.dll] Argument[1] = 'D:\home\site\wwwroot\.\Foo.Api.dll'
[aspnetcorev2.dll] Event Log: 'Invoking hostfxr to find the inprocess request handler failed without finding any native dependencies. This most likely means the app is misconfigured, please check the versions of Microsoft.NetCore.App and Microsoft.AspNetCore.App that are targeted by the application and are installed on the machine.' 
End Event Log Message.
[aspnetcorev2.dll] Failed HRESULT returned: 0x8000ffff at c:\b\w\e37dd45d8cd1eaf4\modules\iisintegration\src\aspnetcoremodulev2\aspnetcore\handlerresolver.cpp:80 
[aspnetcorev2.dll] Event Log: 'Could not find inprocess request handler. Captured output from invoking hostfxr: Invalid runtimeconfig.json [D:\home\site\wwwroot\Foo.Api.runtimeconfig.json] [D:\home\site\wwwroot\Foo.Api.runtimeconfig.dev.json]
' 
End Event Log Message.
[aspnetcorev2.dll] Failed HRESULT returned: 0x8000ffff at c:\b\w\e37dd45d8cd1eaf4\modules\iisintegration\src\aspnetcoremodulev2\aspnetcore\handlerresolver.cpp:153 
[aspnetcorev2.dll] Failed HRESULT returned: 0x8000ffff at c:\b\w\e37dd45d8cd1eaf4\modules\iisintegration\src\aspnetcoremodulev2\aspnetcore\applicationinfo.cpp:136 
[aspnetcorev2.dll] Failed HRESULT returned: 0x8000ffff at c:\b\w\e37dd45d8cd1eaf4\modules\iisintegration\src\aspnetcoremodulev2\aspnetcore\applicationinfo.cpp:91 
[aspnetcorev2.dll] Event Log: 'Failed to start application '/LM/W3SVC/1455123678/ROOT', ErrorCode '0x8000ffff'.' 
End Event Log Message.
[aspnetcorev2.dll] ASPNET_CORE_GLOBAL_MODULE::OnGlobalStopListening
[aspnetcorev2.dll] Stopping application '/LM/W3SVC/1455123678/ROOT'
[aspnetcorev2.dll] ASPNET_CORE_GLOBAL_MODULE::Terminate

Détails du serveur en utilisant kud

dotnet --info
.NET Core SDK (reflecting any global.json):
 Version:   2.2.100
 Commit:    51868761f2

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.14393
 OS Platform: Windows
 RID:         win10-x86
 Base Path:   D:\Program Files (x86)\dotnet\sdk\2.2.100\

Host (useful for support):
  Version: 2.2.0
  Commit:  1249f08fed

.NET Core SDKs installed:
  1.1.10 [D:\Program Files (x86)\dotnet\sdk]
  2.1.402 [D:\Program Files (x86)\dotnet\sdk]
  2.1.500 [D:\Program Files (x86)\dotnet\sdk]
  2.2.100 [D:\Program Files (x86)\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.4 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.6 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.0 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.4 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.6 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.0 [D:\Program Files (x86)\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 1.0.12 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.9 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.9 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.4 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.6 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.0 [D:\Program Files (x86)\dotnet\shared\Microsoft.NETCore.App]

Program.cs

using System;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using Foo.Dal;
using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Hosting;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Serilog;

namespace Foo.Api
{
    [ExcludeFromCodeCoverage]
    public class Program
    {
        public static IConfiguration Configuration { get; } = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
            .AddEnvironmentVariables()
            .Build();

        public static int Main(string[] args)
        {
            Log.Logger = new LoggerConfiguration()
                .Enrich.FromLogContext()
                .ReadFrom.Configuration(Configuration)
                .WriteTo.Console()
                .CreateLogger();

            try
            {
                Log.Information("Starting web Host");
                CreateWebHostBuilder(args).Build().Migrate().Run();
                return 0;
            }
            catch (Exception ex)
            {
                Log.Fatal(ex, "Host terminated unexpectedly");
                return 1;
            }
            finally
            {
                Log.CloseAndFlush();
            }
        }

        public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
            WebHost.CreateDefaultBuilder(args)
                .UseStartup<Startup>()
                .UseConfiguration(Configuration)
                .UseSerilog();


    }

    public static class MigrationExtentions
    {
        public static IWebHost Migrate(this IWebHost webhost)
        {
            using (var scope = webhost.Services.GetService<IServiceScopeFactory>().CreateScope())
            {
                using (var dbContext = scope.ServiceProvider.GetRequiredService<MyContext>())
                {
                    dbContext.Database.Migrate();
                }
            }
            return webhost;
        }
    }
}

extrait de csproj

<PropertyGroup>
    <TargetFramework>netcoreapp2.2</TargetFramework>
    <RuntimeFrameworkVersion>2.2.0</RuntimeFrameworkVersion>
    <UserSecretsId>717ec1cf-5ff6-4176-b96b-ee427f40bee5</UserSecretsId>
    <AssemblyName>Bar.Foo.Api</AssemblyName>
    <AspNetCoreHostingModel>InProcess</AspNetCoreHostingModel>
</PropertyGroup>
c#asp.net-coreasp.net-core-2.2
9
emp

Directory.GetCurrentDirectory() ne fonctionne pas dans InProcess modèle d'hébergement dans ASP.NET Core 2.2 . C'est un bug que j'ai signalé dans Github .

Une solution alternative consiste à écrire une classe d'assistance appelée CurrentDirectoryHelpers comme suit:

internal class CurrentDirectoryHelpers
{
    internal const string AspNetCoreModuleDll = "aspnetcorev2_inprocess.dll";

    [System.Runtime.InteropServices.DllImport("kernel32.dll")]
    private static extern IntPtr GetModuleHandle(string lpModuleName);

    [System.Runtime.InteropServices.DllImport(AspNetCoreModuleDll)]
    private static extern int http_get_application_properties(ref IISConfigurationData iiConfigData);

    [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)]
    private struct IISConfigurationData
    {
        public IntPtr pNativeApplication;
        [System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.BStr)]
        public string pwzFullApplicationPath;
        [System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.BStr)]
        public string pwzVirtualApplicationPath;
        public bool fWindowsAuthEnabled;
        public bool fBasicAuthEnabled;
        public bool fAnonymousAuthEnable;
    }

    public static void SetCurrentDirectory()
    {
        try
        {
            // Check if physical path was provided by ANCM
            var sitePhysicalPath = Environment.GetEnvironmentVariable("ASPNETCORE_IIS_PHYSICAL_PATH");
            if (string.IsNullOrEmpty(sitePhysicalPath))
            {
                // Skip if not running ANCM InProcess
                if (GetModuleHandle(AspNetCoreModuleDll) == IntPtr.Zero)
                {
                    return;
                }

                IISConfigurationData configurationData = default(IISConfigurationData);
                if (http_get_application_properties(ref configurationData) != 0)
                {
                    return;
                }

                sitePhysicalPath = configurationData.pwzFullApplicationPath;
            }

            Environment.CurrentDirectory = sitePhysicalPath;
        }
        catch
        {
            // ignore
        }
    }
}

Appelez ensuite la SetCurrentDirectory() de la classe CurrentDirectoryHelpers comme suit:

public class Program
{
    public static void Main(string[] args)
    {
        CurrentDirectoryHelpers.SetCurrentDirectory();

        Log.Logger = new LoggerConfiguration()
                .Enrich.FromLogContext()
                .ReadFrom.Configuration(Configuration)
                .WriteTo.Console()
                .CreateLogger();

        ...
    }
}

Maintenant, tout devrait bien fonctionner!

8
TanvirArjel