使用网络目标时缺少NLog json字段

Question

我使用NLog以json格式登录，使用下面的目标(文件和网络)。

当登录到文件目标或同时登录到文件和网络时，可以正常记录消息。

但是，当只使用网络目标时，dbResponseTime和messagesSentTotal将不会包含在消息中(实际上，任何使用“event-properties:item=”布局的属性)。所有其他属性都存在，包括在end (module)中定义的属性。

  <?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"
      xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
      autoReload="true"
      throwExceptions="false" internalLogLevel="Off">

  <targets>
    <target name="logHealthCheck" xsi:type="File"
     fileName="D:\Logs\HealthCheck.${shortdate}.json"
     archiveFileName="D:\Logs\HealthCheck.{#}.json"
     archiveNumbering="DateAndSequence"
     archiveAboveSize="33554432"
     archiveDateFormat="yyyy-MM-dd">
      <layout xsi:type="JsonLayout">
        <attribute name="timestamp" layout="${date:universalTime=true:format=o}" />
        <attribute name="machineName" layout="${machinename}" />
        <attribute name="environment" layout="${literal:text=DEV}" />
        <attribute name="dbResponseTime" layout="${event-properties:item=dbResponseTime}" encode="false"/>
        <attribute name="messagesSentTotal" layout="${event-properties:item=messagesSentTotal}" encode="false"/>
        <attribute name="module" layout="${literal:text=core}" />
      </layout>
    </target>

    <target name="logHealthCheckNetwork" xsi:type="Network" address="tcp://127.0.0.1:1514" newLine="true">
      <layout xsi:type="JsonLayout">
        <attribute name="timestamp" layout="${date:universalTime=true:format=o}" />
        <attribute name="machineName" layout="${machinename}" />
        <attribute name="environment" layout="${literal:text=DEV}" />
        <attribute name="dbResponseTime" layout="${event-properties:item=dbResponseTime}" encode="false"/>
        <attribute name="messagesSentTotal" layout="${event-properties:item=messagesSentTotal}" encode="false"/>
        <attribute name="module" layout="${literal:text=core}" />
      </layout>
    </target>

   <rules>
    <logger name="HealthCheck" minlevel="Debug" writeTo="logHealthCheck,logHealthCheckNetwork">
      <filters>
      </filters>
    </logger>
  </rules>

</nlog>

打开内部日志，不记录错误。跟踪信息如下：

2018-02-02 16:43:07.7837 Trace Scanning LoggingRule 'logNamePattern: (HealthCheck:Equals) levels: [ Debug Info Warn Error Fatal ] appendTo: [ logHealthCheckNetwork ]'
2018-02-02 16:43:07.7993 Trace  Scanning NetworkTarget 'Network Target[logHealthCheckNetwork]'
2018-02-02 16:43:07.8305 Trace   Scanning SimpleLayout ''tcp://127.0.0.1:1514''
2018-02-02 16:43:07.8305 Trace    Scanning LiteralLayoutRenderer 'Layout Renderer: ${literal}'
2018-02-02 16:43:07.9085 Trace    Scanning JsonAttribute 'NLog.Layouts.JsonAttribute'
2018-02-02 16:43:07.9085 Trace     Scanning SimpleLayout ''${date:universalTime=true:format=o}''
2018-02-02 16:43:07.9241 Trace      Scanning DateLayoutRenderer 'Layout Renderer: ${date}'
2018-02-02 16:43:07.9397 Trace    Scanning JsonAttribute 'NLog.Layouts.JsonAttribute'
2018-02-02 16:43:07.9397 Trace     Scanning SimpleLayout ''${machinename}''
2018-02-02 16:43:07.9553 Trace      Scanning LiteralLayoutRenderer 'Layout Renderer: ${literal}'
2018-02-02 16:43:07.9553 Trace    Scanning JsonAttribute 'NLog.Layouts.JsonAttribute'
2018-02-02 16:43:07.9709 Trace     Scanning SimpleLayout ''${literal:text=DEV}''
2018-02-02 16:43:07.9709 Trace      Scanning LiteralLayoutRenderer 'Layout Renderer: ${literal}'
2018-02-02 16:43:08.0177 Trace    Scanning JsonAttribute 'NLog.Layouts.JsonAttribute'
2018-02-02 16:43:08.0333 Trace     Scanning SimpleLayout ''${event-properties:item=dbResponseTime}''
2018-02-02 16:43:08.0333 Trace      Scanning EventPropertiesLayoutRenderer 'Layout Renderer: ${event-properties}'
2018-02-02 16:43:08.0801 Trace    Scanning JsonAttribute 'NLog.Layouts.JsonAttribute'
2018-02-02 16:43:08.0801 Trace     Scanning SimpleLayout ''${event-properties:item=messagesSentTotal}''
2018-02-02 16:43:08.3453 Trace    Scanning JsonAttribute 'NLog.Layouts.JsonAttribute'
2018-02-02 16:43:08.3609 Trace     Scanning SimpleLayout ''${literal:text=core}''
2018-02-02 16:43:08.3765 Trace      Scanning LiteralLayoutRenderer 'Layout Renderer: ${literal}'

Answer 1

修复此问题的NLog 4.5.4已发布：https://github.com/NLog/NLog/issues/2573