appharborのアプリケーション起動時にNinjectがクラッシュする

Question

appharborにデプロイされたMVC 3プロジェクトでNinjectを使用しています。私は、アプリケーションが起動したときに例外が発生したことに気付き、Ninject内部の何かが原因であるように見えますが、そこに何かの答えが見つかりません -

完全な例外を追加しようとしますここに：

Server Error in '/' Application. 

Object reference not set to an instance of an object. 

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. 

Source Error: 

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. 

Stack Trace: 


[NullReferenceException: Object reference not set to an instance of an object.] 
    NewRelic.Agent.Core.AgentShim.GetTracer(String tracerFactoryName, UInt32 level, String metricName, String assemblyName, String className, String methodName, String argumentSignature, Object invocationTarget) +51 
    System.AppDomain.CreateDomain(String friendlyName, Evidence securityInfo, AppDomainSetup info) +99 
    Ninject.Modules.AssemblyNameRetriever.CreateTemporaryAppDomain() in c:\Projects\Ninject\ninject\src\Ninject\Modules\AssemblyNameRetriever.cs:68 
    Ninject.Modules.AssemblyNameRetriever.GetAssemblyNames(IEnumerable`1 filenames, Predicate`1 filter) in c:\Projects\Ninject\ninject\src\Ninject\Modules\AssemblyNameRetriever.cs:47 
    Ninject.Modules.CompiledModuleLoaderPlugin.LoadModules(IEnumerable`1 filenames) in c:\Projects\Ninject\ninject\src\Ninject\Modules\CompiledModuleLoaderPlugin.cs:81 
    Ninject.Modules.ModuleLoader.LoadModules(IEnumerable`1 patterns) in c:\Projects\Ninject\ninject\src\Ninject\Modules\ModuleLoader.cs:60 
    Ninject.KernelBase.Load(IEnumerable`1 filePatterns) in c:\Projects\Ninject\ninject\src\Ninject\KernelBase.cs:236 
    Ninject.KernelBase..ctor(IComponentContainer components, INinjectSettings settings, INinjectModule[] modules) in c:\Projects\Ninject\ninject\src\Ninject\KernelBase.cs:97 
    Ninject.KernelBase..ctor(INinjectModule[] modules) in c:\Projects\Ninject\ninject\src\Ninject\KernelBase.cs:57 
    Ninject.StandardKernel..ctor(INinjectModule[] modules) in c:\Projects\Ninject\ninject\src\Ninject\StandardKernel.cs:46 
    Checkin.App_Start.NinjectWebCommon.CreateKernel() in d:\temp\44uvjuob.32m\input\Checkin\App_Start\NinjectWebCommon.cs:43 
    Ninject.Web.Common.Bootstrapper.Initialize(Func`1 createKernelCallback) in c:\Projects\Ninject\Ninject.Web.Common\src\Ninject.Web.Common\Bootstrapper.cs:50 
    Checkin.App_Start.NinjectWebCommon.Start() in d:\temp\44uvjuob.32m\input\Checkin\App_Start\NinjectWebCommon.cs:26 

[TargetInvocationException: Exception has been thrown by the target of an invocation.] 
    System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner) +0 
    System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner) +69 
    System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) +242 
    System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +21 
    System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +19 
    WebActivator.BaseActivationMethodAttribute.InvokeMethod() +223 
    WebActivator.ActivationManager.RunActivationMethods() +493 
    WebActivator.ActivationManager.RunPreStartMethods() +28 
    WebActivator.ActivationManager.Run() +55 

[InvalidOperationException: The pre-application start initialization method Run on type WebActivator.ActivationManager threw an exception with the following error message: Exception has been thrown by the target of an invocation..] 
    System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods) +377 
    System.Web.Compilation.BuildManager.CallPreStartInitMethods() +267 
    System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +690 

[HttpException (0x80004005): The pre-application start initialization method Run on type WebActivator.ActivationManager threw an exception with the following error message: Exception has been thrown by the target of an invocation..] 
    System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +532 
    System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +90 
    System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +172 

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272 

私は、ページをリロードした場合 - 例外が消えます。 これは、フィルタにninject使用とは何かを持っているかもしれません：

this.BindFilter<AdminAuthorizationAttribute>(FilterScope.Controller, -100) 
    .When((context, ad) => context.RouteData.DataTokens["area"] != null && 
      ((string)context.RouteData.DataTokens["area"]).ToLower() == "admin" && 
      ((string)context.RouteData.Values["controller"]).ToLower() != "login"); 

Answer 1

問題がNinjectによって引き起こされていません。原因は、NewRelic.Agent.Core.AgentShim（AppHarborが使用）です。

stacktraceを見ても、Ninjectの自動エクステンション読み込み機能を無効にして手動でロードすることでこの問題を回避できます。

var kernel = new StandardKernel(new NinjectSettings { LoadExtensions = false }) 
kernel.Load(new Ninject.Web.Mvc.MvcModule()); // same for all other extension modules 

Answer 2

一時的にNew Relicアドオンを無効にし、AppHarborサーバーからNew Relicエージェントを削除しました。 New Relicは、プラットフォーム上で実行されているアプリケーションでも問題が発生しなくなった時点で、再追加されます。