NLog：定制安装程序

Question

我的任务是编写ac＃表单应用程序以：

• 显示可安装NLog的可用网站的DDL（基于我们的内部标准）
• 安装所需的文件以支持NLog 我有一些工作站点（我没有写过），都使用NLog功能作为基础。 Global.asax和App_Code / LogManager.vb之间存在一些连接/交互，可以将错误定向到NLog。 我没有写那部分，所以我认为那可能是问题所在，因为我不知道它们是如何相互作用的...

这是供我们的实施工程师用作部署工具。

（注意：此应用是C＃，但目标网站和我们的生态系统一样，始终是VB）

正在复制的文件：

• bin / NLog.dll
• bin / NLog.Extended.dll
• Global.asax
• NLog.config
• App_Code / LogManager.vb

在我们的Global.asax中，我们正在捕获如下错误：

Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)
    ' Code that runs when an unhandled error occurs
    Dim lastException As Exception = Server.GetLastError()
    HandleError(lastException)       
End Sub
 Public Shared Sub HandleError(ex As Exception)
    'Honor the config setting for whether we should do the logging. 

    Dim hostId As String = ""

    If HttpContext.Current IsNot Nothing AndAlso HttpContext.Current.Request IsNot Nothing Then
        hostId = " (" + HttpContext.Current.Request.Url.Host + ")"
    End If

    If ex Is Nothing Then
        'OrElse request.Url.Host.ToLower = "localhost" Then
        Return
    End If

    If ShouldLogError(ex) Then
        Dim LogManager As New LogManager()

        LogManager.Logger.LogError("Global Exception",ex)

    End If
End Sub

Protected Shared Function ShouldLogError(ex As Exception) As Boolean
    If TypeOf ex Is System.Web.HttpRequestValidationException Then
        Return False
    End If

    If TypeOf ex Is HttpException Then
        Dim exHttp As HttpException = DirectCast(ex, HttpException)
        Select Case exHttp.GetHttpCode()
            Case 404
                'File Not Found
                Return False
        End Select
    End If

    If TypeOf ex Is System.IO.FileNotFoundException Then
        Return False
    End If

    If TypeOf ex.InnerException Is System.IO.FileNotFoundException Then
        Return False
    End If

    If TypeOf ex Is System.Reflection.TargetInvocationException OrElse TypeOf ex Is System.FormatException OrElse (TypeOf ex Is HttpException AndAlso ex.Message.Contains("Invalid viewstate.")) OrElse TypeOf ex Is System.Security.Cryptography.CryptographicException Then
        If HttpContext.Current.Request.Url.AbsolutePath.EndsWith("ScriptResource.axd", StringComparison.OrdinalIgnoreCase) OrElse HttpContext.Current.Request.Url.AbsolutePath.EndsWith("WebResource.axd", StringComparison.OrdinalIgnoreCase) Then
            Return False
        End If
    End If

    Return True
End Function

在LogManager.vb中：

Public Class LogManager

Private _Logger As ILogger

Public Sub New()

End Sub

Public ReadOnly Property Logger As ILogger
    Get
        If _Logger Is Nothing Then
            _Logger = New LoggerFactory().CreateLoggerNlog("Website")
        End If

        Return _Logger

    End Get
End Property
End Class

和NLog.config：

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<extensions>
  <add assembly="OURDOMAINlibrary"/>
  <!--<add assembly="NLog.Extended"/>-->
</extensions>
<targets async="false">
  <target xsi:type="Console" name="debugConsole" layout="${VnEventId:brackets=true} ${uppercase:${level}} ${LoggerFriendly} ${message} "/>
</targets>
<targets async="true">
  <target xsi:type="File" name="debugFile" createDirs="true" fileName="c:/Vendornet/Log/${iis-site-name}}/${iis-site-name}_${shortdate}.log" layout="${longdate} ${VnEventId:brackets=true} ${uppercase:${level}} ${LoggerFriendly} ${message}"/>
  <!-- Alter the smtpServer and to attributes only. For information regarding the ${FatalEmail} tag, see 
                 the documentation provided with this project
        -->
  <target name="mail" xsi:type="Mail" html="true" replaceNewlineWithBrTagInHtml="true" smtpServer="OURDOMAIN" smtpAuthentication="None" to="${FatalEmail:DL-OURDOMAIN-ImpDev@OURDOMAIN.com;me@OURDOMAIN.com}" from="${machinename}@OURDOMAIN.com" subject="${iis-site-name} - ${processname} has FAILED on ${machinename}." body="${message}"/>
  <!-- The Webservice Target Below should not be modified except for the url attribute. To disable this target
             set the minlevel in the Rules section to Off. Otherwise set it to Trace or higher
        -->
  <target type="WebService" name="vnLogApi" url="http://OURDOMAIN/api/log" protocol="HttpPost" encoding="UTF-8">
    <parameter name="time_stamp" type="System.String" layout="${date}"/>
    <parameter name="level" type="System.String" layout="${level}"/>
    <parameter name="logger" type="System.String" layout="${logger}"/>
    <parameter name="userName" type="System.String" layout="${identity}"/>
    <parameter name="url" type="System.String" layout="${aspnet-request:serverVariable=Url}"/>
    <parameter name="machineName" type="System.String" layout="${machinename}"/>
    <parameter name="sessionId" type="System.String" layout="${aspnet-sessionid}"/>
    <parameter name="threadId" type="System.String" layout="${threadid}"/>
    <parameter name="referrer" type="System.String" layout="${aspnet-request:serverVariable=HTTP_REFERER}"/>
    <parameter name="userAgent" type="System.String" layout="${aspnet-request:serverVariable=HTTP_USER_AGENT}"/>
    <parameter name="code" type="System.String" layout="${CUSTOMEventId}"/>
    <parameter name="message" type="System.String" layout="${message}"/>
    <parameter name="version" type="System.String" layout=""/>
    <parameter name="exception" type="System.String" layout="${exception}"/>
    <parameter name="stackTrace" type="System.String" layout="${stacktrace}"/>
    <parameter name="clientName" type="System.String" layout="${iis-site-name}"/>
    <parameter name="fileName" type="System.String" layout="${iis-site-name} ${date}"/>
  </target>
</targets>
<rules>
  <logger name="*" minlevel="Trace" writeTo="debugConsole"/>
  <logger name="*" minlevel="Trace" writeTo="debugFile"/>
  <!-- SET TO Trace or Higher Once LogAPI is available for this server -->
  <logger name="*" minlevel="Trace" writeTo="vnLogApi"/>
  <!-- THIS LINE SHOULD NOT BE MODIFIED -->
  <logger name="*" minlevel="Fatal" writeTo="mail"/>
</rules>

因此，即使对NLog.config进行了最简化的配置，它也不输出任何内容……尝试了一个简单的日志文件，Web服务邮件……什么也没有。 我已经尝试了几个地方来解决一个错误，但命名为var错误，缺少conn.open等，无济于事...

我还尝试绕过对“ ShouldLogError() ”的检查，以确保它触发但ShouldLogError() 。

要使NLog以这种方式工作，还需要其他什么文件或调整？

Answer 1

您的配置中有一个错误， 应该只有一个<targets> （在您的情况下有多个<target> ） 。 此外， <nlog>也没有关闭-但这可能是复制粘贴错误。

它应该是：

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <extensions>
    <add assembly="OURDOMAINlibrary"/>
    <!--<add assembly="NLog.Extended"/>-->
  </extensions>
  <targets async="true">
    <target xsi:type="Console" name="debugConsole" layout="${VnEventId:brackets=true} ${uppercase:${level}} ${LoggerFriendly} ${message} "/>
    <target xsi:type="File" name="debugFile" createDirs="true" fileName="c:/Vendornet/Log/${iis-site-name}}/${iis-site-name}_${shortdate}.log" layout="${longdate} ${VnEventId:brackets=true} ${uppercase:${level}} ${LoggerFriendly} ${message}"/>
    <!-- Alter the smtpServer and to attributes only. For information regarding the ${FatalEmail} tag, see 
                 the documentation provided with this project
        -->
    <target name="mail" xsi:type="Mail" html="true" replaceNewlineWithBrTagInHtml="true" smtpServer="OURDOMAIN" smtpAuthentication="None" to="${FatalEmail:DL-OURDOMAIN-ImpDev@OURDOMAIN.com;me@OURDOMAIN.com}" from="${machinename}@OURDOMAIN.com" subject="${iis-site-name} - ${processname} has FAILED on ${machinename}." body="${message}"/>
    <!-- The Webservice Target Below should not be modified except for the url attribute. To disable this target
             set the minlevel in the Rules section to Off. Otherwise set it to Trace or higher
        -->
    <target type="WebService" name="vnLogApi" url="http://OURDOMAIN/api/log" protocol="HttpPost" encoding="UTF-8">
      <parameter name="time_stamp" type="System.String" layout="${date}"/>
      <parameter name="level" type="System.String" layout="${level}"/>
      <parameter name="logger" type="System.String" layout="${logger}"/>
      <parameter name="userName" type="System.String" layout="${identity}"/>
      <parameter name="url" type="System.String" layout="${aspnet-request:serverVariable=Url}"/>
      <parameter name="machineName" type="System.String" layout="${machinename}"/>
      <parameter name="sessionId" type="System.String" layout="${aspnet-sessionid}"/>
      <parameter name="threadId" type="System.String" layout="${threadid}"/>
      <parameter name="referrer" type="System.String" layout="${aspnet-request:serverVariable=HTTP_REFERER}"/>
      <parameter name="userAgent" type="System.String" layout="${aspnet-request:serverVariable=HTTP_USER_AGENT}"/>
      <parameter name="code" type="System.String" layout="${CUSTOMEventId}"/>
      <parameter name="message" type="System.String" layout="${message}"/>
      <parameter name="version" type="System.String" layout=""/>
      <parameter name="exception" type="System.String" layout="${exception}"/>
      <parameter name="stackTrace" type="System.String" layout="${stacktrace}"/>
      <parameter name="clientName" type="System.String" layout="${iis-site-name}"/>
      <parameter name="fileName" type="System.String" layout="${iis-site-name} ${date}"/>
    </target>
  </targets>
  <rules>
    <logger name="*" minlevel="Trace" writeTo="debugConsole"/>
    <logger name="*" minlevel="Trace" writeTo="debugFile"/>
    <!-- SET TO Trace or Higher Once LogAPI is available for this server -->
    <logger name="*" minlevel="Trace" writeTo="vnLogApi"/>
    <!-- THIS LINE SHOULD NOT BE MODIFIED -->
    <logger name="*" minlevel="Fatal" writeTo="mail"/>
  </rules>
</nlog>

请记住，您只能使用async属性来实现所有目标。 如果只需要一个目标异步，则应使用异步包装器：

<targets>
   <target name="target2" xsi:type="AsyncWrapper">
     <target name ="target1" xsi:type="File"
                fileName="c:/temp/test.log" layout="${message}"
                keepFileOpen="true" />
   </target>
   <rules>
     <logger name="*" minlevel="Info" writeTo="target2"/>
   </rules>
</targets> 

请参阅AsyncWrapper目标文档 。

如果仍然遇到问题，请启用并检查内部日志

Answer 2

显然，在我之前的人将一些NLog写入了我们的自定义dll之一，但没有将NLog.web写入某些布局（例如{iis-site-name}）所需要的NLog.web。 删除那些修复它：