严重的Sitecore MVC / Glassmapper问题(Serious Sitecore MVC/Glassmapper issue)

 我们为客户端提供Sitecore站点，该站点抛出了与MVC和/或Glassmapper相关的错误。 在负载测试期间（不是大量）负载下，它发生在内容传送服务器上。 它似乎发生在网站首次编译时。 在此事件发生之前，我们关闭了sitecore（“HostingEnvironment started shutdown”），当它重新启动时，在主视图中遇到的第一行代码会引发错误。 如果我删除该行，那么错误后的行等等，一直向下移动页面。 好像没有代码可以运行，就像重新启动时某些东西会被破坏一样。 如果我重置IIS，问题就会消失。 当然，除了Razor视图外，我们的所有代码都在DLL中编译。 
 
 我知道这是一个很大的变化，但如果有人遇到过这样的问题或者有什么想法在哪里看，我将不胜感激！ 
 
 这是堆栈跟踪： 
 
Exception: System.Web.HttpUnhandledException
Message: An unhandled exception occurred.
Source: Sitecore.Mvc
   at Sitecore.Mvc.Pipelines.MvcEvents.Exception.ShowAspNetErrorMessage.ShowErrorMessage(ExceptionContext exceptionContext, ExceptionArgs args)
   at Sitecore.Mvc.Pipelines.MvcEvents.Exception.ShowAspNetErrorMessage.Process(ExceptionArgs args)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
   at Sitecore.Mvc.Filters.PipelineBasedRequestFilter.OnException(ExceptionContext exceptionContext)
   at System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters(ControllerContext controllerContext, IList`1 filters, Exception exception)
   at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
   at Sitecore.Mvc.Controllers.SitecoreActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
   at System.Web.Mvc.Controller.<>c__DisplayClass22.<BeginExecuteCore>b__1e()
   at System.Web.Mvc.Async.AsyncResultWrapper.<.cctor>b__0(IAsyncResult asyncResult, Action action)
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at Sitecore.Mvc.Routing.RouteHttpHandler.EndProcessRequest(IAsyncResult result)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Nested Exception

Exception: System.InvalidOperationException
Message: Error while rendering view: '/Views/Chrome.cshtml' (model: 'Castle.Proxies.IPageBaseProxy, DynamicProxyGenAssembly2').

Source: Sitecore.Mvc
   at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)
   at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Render(Renderer renderer, TextWriter writer, RenderRenderingArgs args)
   at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Process(RenderRenderingArgs args)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
   at Sitecore.Mvc.Presentation.RenderingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)

Nested Exception

Exception: System.IndexOutOfRangeException
Message: Index was outside the bounds of the array.
Source: System.Core
   at System.Collections.Generic.HashSet`1.AddIfNotPresent(T value)
   at System.Collections.Generic.HashSet`1.Add(T item)
   at Glass.Mapper.Sc.DataMappers.SitecoreFieldStringMapper.GetField(Field field, SitecoreFieldConfiguration config, SitecoreDataMappingContext context)
   at Glass.Mapper.Sc.DataMappers.AbstractSitecoreFieldMapper.MapToProperty(AbstractDataMappingContext mappingContext)
   at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateInterface.InterfacePropertyInterceptor.LoadValues()
   at System.Lazy`1.CreateValue()
   at System.Lazy`1.LazyInitValue()
   at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateInterface.InterfacePropertyInterceptor.get_Values()
   at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateInterface.InterfacePropertyInterceptor.Intercept(IInvocation invocation)
   at Castle.DynamicProxy.AbstractInvocation.Proceed()
   at Castle.Proxies.IPageBaseProxy.get_TemplateId()
   at ASP._Page_Views_Chrome_cshtml.Execute() in d:\Webroot\Sitecore\Website\Views\Chrome.cshtml:line 11
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
   at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)
 
 这是错误的代码： 
 
Line 9:      var bodyClass = "";
Line 10: 
Line 11:     if (Model.TemplateId == GlobalId.ArticlePageTemplate.Guid)
Line 12:     {
Line 13:         bodyClass = "pagetype-article";
 
 第11行是发生错误的地方。 不知道是模型还是我们对静态ID的调用。 请记住，这是调用我们的编译代码（DLL）的第一行代码。 如果我删除它，下一个喜欢它会出错。 我已经为页面上的每行代码测试了这个。 
 
 获得了一些额外的信息：在这种情况下，服务器由IT人员重新启动，因此关闭是正常的并且是计划好的。 所以，我认为负载测试是一个红色的鲱鱼。 即使我们已经看到在负载测试期间发生错误，看起来这种情况可能会在应用程序启动后的第一个请求中随机发生。 

We have a Sitecore site for a client that is throwing an error that seems related to MVC and/or Glassmapper. It happening on the content delivery server when under some load during load testing (not massive). It appears to happen when the site is first compiling. Prior to this event, we get a sitecore shut down ("HostingEnvironment initiated shutdown"), When it restarts the first line of code that's hit in the main view throws an error. If I remove that line, then the line after errors, etc., all the way down the page. It's as if no code can run, like the something become corrupt when it restarted. If I reset IIS the issue goes away. All of our code is complied in the DLLs, except the Razor views, of course.
 
I know this is all a big vauge, but if anyone has experienced an issue like this or has any ideas where to look, it would be greatly appreciated! 
 
Here's the stack trace:
 
Exception: System.Web.HttpUnhandledException
Message: An unhandled exception occurred.
Source: Sitecore.Mvc
   at Sitecore.Mvc.Pipelines.MvcEvents.Exception.ShowAspNetErrorMessage.ShowErrorMessage(ExceptionContext exceptionContext, ExceptionArgs args)
   at Sitecore.Mvc.Pipelines.MvcEvents.Exception.ShowAspNetErrorMessage.Process(ExceptionArgs args)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
   at Sitecore.Mvc.Filters.PipelineBasedRequestFilter.OnException(ExceptionContext exceptionContext)
   at System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters(ControllerContext controllerContext, IList`1 filters, Exception exception)
   at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
   at Sitecore.Mvc.Controllers.SitecoreActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)
   at System.Web.Mvc.Controller.<>c__DisplayClass22.<BeginExecuteCore>b__1e()
   at System.Web.Mvc.Async.AsyncResultWrapper.<.cctor>b__0(IAsyncResult asyncResult, Action action)
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState)
   at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult)
   at Sitecore.Mvc.Routing.RouteHttpHandler.EndProcessRequest(IAsyncResult result)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Nested Exception

Exception: System.InvalidOperationException
Message: Error while rendering view: '/Views/Chrome.cshtml' (model: 'Castle.Proxies.IPageBaseProxy, DynamicProxyGenAssembly2').

Source: Sitecore.Mvc
   at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)
   at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Render(Renderer renderer, TextWriter writer, RenderRenderingArgs args)
   at Sitecore.Mvc.Pipelines.Response.RenderRendering.ExecuteRenderer.Process(RenderRenderingArgs args)
   at (Object , Object[] )
   at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
   at Sitecore.Mvc.Pipelines.PipelineService.RunPipeline[TArgs](String pipelineName, TArgs args)
   at Sitecore.Mvc.Presentation.RenderingView.Render(ViewContext viewContext, TextWriter writer)
   at System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult)
   at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)

Nested Exception

Exception: System.IndexOutOfRangeException
Message: Index was outside the bounds of the array.
Source: System.Core
   at System.Collections.Generic.HashSet`1.AddIfNotPresent(T value)
   at System.Collections.Generic.HashSet`1.Add(T item)
   at Glass.Mapper.Sc.DataMappers.SitecoreFieldStringMapper.GetField(Field field, SitecoreFieldConfiguration config, SitecoreDataMappingContext context)
   at Glass.Mapper.Sc.DataMappers.AbstractSitecoreFieldMapper.MapToProperty(AbstractDataMappingContext mappingContext)
   at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateInterface.InterfacePropertyInterceptor.LoadValues()
   at System.Lazy`1.CreateValue()
   at System.Lazy`1.LazyInitValue()
   at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateInterface.InterfacePropertyInterceptor.get_Values()
   at Glass.Mapper.Pipelines.ObjectConstruction.Tasks.CreateInterface.InterfacePropertyInterceptor.Intercept(IInvocation invocation)
   at Castle.DynamicProxy.AbstractInvocation.Proceed()
   at Castle.Proxies.IPageBaseProxy.get_TemplateId()
   at ASP._Page_Views_Chrome_cshtml.Execute() in d:\Webroot\Sitecore\Website\Views\Chrome.cshtml:line 11
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy()
   at System.Web.Mvc.WebViewPage.ExecutePageHierarchy()
   at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage)
   at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData)
   at Sitecore.Mvc.Presentation.ViewRenderer.Render(TextWriter writer)
 
Here's the code that errors:
 
Line 9:      var bodyClass = "";
Line 10: 
Line 11:     if (Model.TemplateId == GlobalId.ArticlePageTemplate.Guid)
Line 12:     {
Line 13:         bodyClass = "pagetype-article";
 
Line 11 is where the error occurs. Don't know if it's the Model that's or our call to the static ID. Keep in mind that this is the very first line of code that calls out to our compiled code (DLL). If I remove it, the next one like it will error. I've tested this for every line of code on the page. 
 
Got some additional information: The server was restarted by an IT guy in this case, so the shutdown was normal and planned. So, I think the load testing is a red herring. Even though we've seen the error happen during load testing, it looks like this situation can happen randomly on first request after the app starts.

原文：