NLog: ${callsite} in cross domain application sometime not working (Akka.net)

Hi.

Type: Bug

NLog version: (> 4.3.7) builded from commit cdb1fcf14f6e505317ab9cdd00322fe60ba4b4ca

Platform: .Net 4.6.1

Current 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">

    <!-- go to http://nlog-project.org/wiki/Configuration_file for more information -->

    <variable name="ConsoleLayout" value="${date:format=HH\:mm\:ss.fff} ${pad:padding=5:inner=${level:uppercase=true}} ${message} ${onexception:EXCEPTION OCCURRED\:${exception:format=tostring}}" />
    <variable name="NormalLayout"  value="${longdate} ${level:uppercase=true} ${callsite} ${message} ${onexception:EXCEPTION OCCURRED\:${exception:format=tostring}}" />
    <variable name="VerboseLayout" value="${longdate} ${level:upperCase=true} ${callsite:includSourcePath=true} ${message} ${exception:format=tostring}" />
    <variable name="ExceptionVerboseLayout" value="${VerboseLayout} (${stacktrace:topFrames=10})  
                     ${exception:format=ToString}"                  />


    <targets async="true">

        <target xsi:type="File" name="appLog"
            layout="${VerboseLayout}"
            fileName="${basedir}/logs/current_log.txt"
            archiveFileName="${basedir}/archives/log.{#}.zip"
            archiveEvery="Day"
            archiveNumbering="Rolling"
            maxArchiveFiles="7"
          enableArchiveFileCompression="true" />


        <target name="errorsLog"
        xsi:type="FilteringWrapper"
        condition="length('${exception}')>0">
            <target xsi:type="File" name="warnLog"
                layout="${ExceptionVerboseLayout}"
                fileName="${basedir}/logs/errors.txt"
                archiveFileName="${basedir}/archives/errors.{#}.zip"
                archiveEvery="Day"
                archiveNumbering="Rolling"
                maxArchiveFiles="15"
              enableArchiveFileCompression="true" />
        </target>



        <target xsi:type="ColoredConsole" name="console" layout="${ConsoleLayout}">
            <highlight-row condition="level == LogLevel.Warn" foregroundColor="Yellow" />
            <highlight-row condition="level == LogLevel.Error" foregroundColor="Red" />
            <highlight-row condition="level == LogLevel.Fatal" foregroundColor="White" backgroundColor="Red" />

            <highlight-word text="DEBUG" foregroundColor="DarkBlue" />
            <highlight-word text="INFO" foregroundColor="DarkGreen" />
            <highlight-word text="WARN" foregroundColor="Black" backgroundColor="Yellow" />

        </target>
    </targets>
    <rules>
        <logger name="*" minlevel="Trace" writeTo="appLog,console" />
        <logger name="*" minlevel="Warn" writeTo="errorsLog,warnLog" />
    </rules>
</nlog>

In case of a BUG:

• What is the current result? Incorrect ${callsite} in Log
• What is the expected result? ${callsite} in my class
• Did you checked the Internal log? Nope
• Please post full exception details (message, stacktrace, inner exceptions)

${callsite} in cross domain application sometime not working (using with Akka.net). I use NLog in my Adapter class. Log object shared across 2 AppDomains. It’s fine works, but if I use this object in Akka.net actor I get incorrect ${callsite}. Maybe Akka.net issue.

public class NLogAdapter : MarshalByRefObject, ILog {
// cropped. ^^^ this object used by 2 AppDomains + used by Akka.net Logging
        public NLogAdapter()
        {
            LogManager.AddHiddenAssembly(Assembly.GetExecutingAssembly());
            LogManager.AddHiddenAssembly(Assembly.GetAssembly(typeof(NLog.Logger)));

            _nlog = LogManager.GetCurrentClassLogger();
        }
}

What get in log (error log with stacktrace):

2016-10-04 11:00:11.2872 ERROR NLog.LoggerImpl.Write [akka://RuleProcessor/user/AggregateRuleGroupActor#388440039] Test!  (CrossContextChannel.SyncProcessMessage => Thread.InternalCrossContextCallback => CrossContextChannel.SyncProcessMessageCallback => ServerContextTerminatorSink.SyncProcessMessage => ServerObjectTerminatorSink.SyncProcessMessage => StackBuilderSink.SyncProcessMessage => StackBuilderSink._PrivateProcessMessage => NLogAdapter.Error => Logger.Error => LoggerImpl.Write)

• Are there any work arrounds? yes/no no
• Is there a version in which it did worked? I don’t know
• Can you help us by writing an unit test? maybe if can reproduce without Akka.net