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Web アプリケーションで Microsoft Enterprise Library 5.0 Logging Application Block を使用しようとしています。メイン アプリケーションからログに書き込むことはできますが、2 番目の AppDomain からこれを試みると、ログに記録しようとすると例外がスローされます (以下を参照)。

コンソール アプリケーションでは、まったく同じコードで問題なく動作します。次のテスト コードに絞り込みました (プロジェクトに合わせてアセンブリと型名の定数を変更する必要があります)。

public class LogTester
{
    public const string LogWriterAssembly = "LogTest";
    public const string LogWriterType = "LogTest.LogWriter";

    public static void DoLogTest()
    {
        LogWriter localLogger = new LogWriter();
        localLogger.Log("In first AppDomain");

        AppDomain domain = GetAppDomain();

        LogWriter remoteLogger = (LogWriter)domain.CreateInstanceAndUnwrap(LogWriterAssembly, LogWriterType);
        remoteLogger.Log("In second AppDomain");
    }

    private static AppDomain GetAppDomain()
    {
        string baseFolder = AppDomain.CurrentDomain.BaseDirectory;

        string folder = AppDomain.CurrentDomain.SetupInformation.PrivateBinPath;

        if (String.IsNullOrEmpty(folder))
            folder = baseFolder;

        AppDomainSetup setup = new AppDomainSetup();
        setup.ApplicationName = "TestAppName";
        setup.ApplicationBase = baseFolder;
        setup.PrivateBinPath = folder;
        setup.ShadowCopyFiles = "true";

        return AppDomain.CreateDomain("TestAppName", null, setup);
    }
}

public class LogWriter : MarshalByRefObject
{
    public void Log(string message)
    {
        Logger.Write(AppDomain.CurrentDomain.FriendlyName + ": " + message);
    }
}

私が使用しているロギング構成はデフォルトです (エンタープライズ ライブラリ構成ユーティリティによって作成されます)。

<configSections>
    <section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.505.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
</configSections>
<loggingConfiguration name="" tracingEnabled="true" defaultCategory="General">
    <listeners>
        <add name="Event Log Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FormattedEventLogTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.505.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
            listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FormattedEventLogTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.505.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
            source="Enterprise Library Logging" formatter="Text Formatter"
            log="" machineName="." traceOutputOptions="None" />
    </listeners>
    <formatters>
        <add type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.505.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
            template="Timestamp: {timestamp}{newline}&#xA;Message: {message}{newline}&#xA;Category: {category}{newline}&#xA;Priority: {priority}{newline}&#xA;EventId: {eventid}{newline}&#xA;Severity: {severity}{newline}&#xA;Title:{title}{newline}&#xA;Machine: {localMachine}{newline}&#xA;App Domain: {localAppDomain}{newline}&#xA;ProcessId: {localProcessId}{newline}&#xA;Process Name: {localProcessName}{newline}&#xA;Thread Name: {threadName}{newline}&#xA;Win32 ThreadId:{win32ThreadId}{newline}&#xA;Extended Properties: {dictionary({key} - {value}{newline})}"
            name="Text Formatter" />
    </formatters>
    <categorySources>
        <add switchValue="All" name="General">
            <listeners>
                <add name="Event Log Listener" />
            </listeners>
        </add>
    </categorySources>
    <specialSources>
        <allEvents switchValue="All" name="All Events" />
        <notProcessed switchValue="All" name="Unprocessed Category" />
        <errors switchValue="All" name="Logging Errors &amp; Warnings">
            <listeners>
                <add name="Event Log Listener" />
            </listeners>
        </errors>
    </specialSources>
</loggingConfiguration>

コンソール アプリでは、すべて正常に動作し、両方のログ メッセージが書き込まれます。ただし、Web アプリでは、2 番目のメッセージを書き込もうとすると、次の例外が発生します。

[InvalidOperationException: The type LogWriter cannot be constructed. You must configure the container to supply this value.]

[ResolutionFailedException: Resolution of the dependency failed, type = "Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter", name = "(none)".
Exception occurred while: while resolving.
Exception is: InvalidOperationException - The type LogWriter cannot be constructed. You must configure the container to supply this value.
-----------------------------------------------
At the time of the exception, the container was:

  Resolving Microsoft.Practices.EnterpriseLibrary.Logging.LogWriter,(none)
]

[ActivationException: Activation error occured while trying to get instance of type LogWriter, key ""]
   System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) +10582079
   System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) +336
   MvcApplication1.Controllers.LogWriter.Log(String message) in c:\dev\Sage Data Cloud\Development\MvcApplication1\MvcApplication1\Controllers\DefaultController.cs:65
   MvcApplication1.Controllers.LogTester.DoLogTest() in c:\dev\Sage Data Cloud\Development\MvcApplication1\MvcApplication1\Controllers\DefaultController.cs:38
   MvcApplication1.Controllers.DefaultController.Index() in c:\dev\Sage Data Cloud\Development\MvcApplication1\MvcApplication1\Controllers\DefaultController.cs:18
   lambda_method(Closure , ControllerBase , Object[] ) +101
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +59
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +435
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +60
   System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeSynchronousActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +50
   System.Web.Mvc.Async.<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41() +75
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +44
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +139
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +49
   System.Web.Mvc.Async.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33() +126
   System.Web.Mvc.Async.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49() +323
   System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult) +44
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +139
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +102
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +50
   System.Web.Mvc.Async.<>c__DisplayClass2a.<BeginInvokeAction>b__20() +68
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult) +184
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +136
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +56
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +40
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult) +40
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +47
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +151
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +44
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +47
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +151
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +39
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +45
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +47
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +151
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +59
   System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +40
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9629708
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155

必要な Enterprise Library アセンブリへの参照があるため、Logging、ServiceLocation、Unity、および Unity.Configuration アセンブリがローカルにコピーされます。

.NET Reflector を使用して Enterprise Library コードへのデバッグを試みましたが、オブジェクトの作成はすべて、動的に生成されたコードを使用して行われます。コメント解除された逆コンパイルされたソース!)。

誰かが以前にこの問題に遭遇したことがあるかどうか、また可能な解決策はありますか? この同じ問題は他のどこにも見つかりません。

前もって感謝します。ピート

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1 に答える 1

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新しい AppDomain でエンタープライズ ライブラリを構成できるように、新しい AppDomain の構成ファイルを設定する必要があります。AppDomainSetup.ConfigurationFileプロパティを使用してこれを行うことができます。

AppDomainSetup setup = new AppDomainSetup();
setup.ApplicationName = "TestAppName";
setup.ApplicationBase = baseFolder;
setup.PrivateBinPath = folder;
setup.ShadowCopyFiles = "true";
setup.ConfigurationFile = 
    AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
于 2013-06-20T17:37:10.960 に答える