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From "Chris Bodolus (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4NET-558) log4net 2.0.7 and greater doesn't log %message pattern
Date Sat, 01 Apr 2017 03:11:41 GMT

    [ https://issues.apache.org/jira/browse/LOG4NET-558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15951963#comment-15951963
] 

Chris Bodolus commented on LOG4NET-558:
---------------------------------------

Hi [~os.varlamov],
>From the [documentation|https://logging.apache.org/log4net/log4net-1.2.13/release/sdk/log4net.Layout.PatternLayout.html]
- {quote}Each conversion specifier starts with a percent sign (%) and is followed by optional
format modifiers and a conversion pattern name.{quote}
Specifically regarding the _property_ conversion pattern name {quote}Used to output an event
specific property. The key to lookup must be specified within braces and directly following
the pattern specifier, e.g. {code}%property{user}{code} would include the value from the property
that is keyed by the string 'user'.[...]Properties are added to events by loggers or appenders[...]If
no key is specified, (e.g. %property) then *all the keys and their values are printed in a
comma separated list*.{quote}

It looks like your logger is parsing this portion ok, {code}%date [%thread] %-5level %logger
[{code}, gets to the _property_ conversion pattern name and gets in a recursive loop.  Based
on the documentation, I would have assumed if NDC was a non-existent key, nothing would have
been printed rather than everything - though my interpretation might be off.

Is it possible for you to confirm whether the value for key NDC is persisted by your appenders?
 Is that NDC value needed by your clients - perhaps you could remove that portion of the patternLayout
until a fix is determined.

Regards,

 - Chris Bodolus

> log4net 2.0.7 and greater doesn't log %message pattern
> ------------------------------------------------------
>
>                 Key: LOG4NET-558
>                 URL: https://issues.apache.org/jira/browse/LOG4NET-558
>             Project: Log4net
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 2.0.7, 2.0.8
>         Environment: Windows XP SP3 Home Edition
>            Reporter: Varlamov Oleg
>            Priority: Critical
>             Fix For: 1.2.15
>
>
> When we are updated log4net from 1.2.15 to 2.0.7 some of our customers report about wrong
logging in RollingFileAppender. 
> Log file looks like:
> 2017-03-07 05:45:23,250 [1] WARN  Driver [2017-03-07 05:45:32,718 [1] INFO  Driver [2017-03-07
05:45:36,515 [1] INFO  Driver [2017-03-07 05:45:37,843 [1] INFO  Driver [2017-03-07 05:45:37,875
[1] INFO  Driver [2017-03-07 05:45:38,125 [1] INFO  WebcashClient [2017-03-07 05:45:40,828
[7] INFO  Driver [2017-03-07 05:45:40,937 [7] INFO  Driver [2017-03-07 05:45:41,093 [7] INFO
 Driver [2017-03-07 05:45:41,296 [7] INFO  Driver [2017-03-07 05:45:41,328 [7] INFO  Driver
[2017-03-07 05:45:41,328 [7] INFO  Driver [2017-03-07 05:45:41,343 [7] INFO  Driver [2017-03-07
05:45:41,343 [7] INFO  Driver [2017-03-07 05:45:41,375 [7] INFO  Driver [2017-03-07 05:45:41,375
[7] INFO  Driver [2017-03-07 05:45:41,531 [7] INFO  Driver [2017-03-07 05:45:41,531 [7] INFO
 Driver [2017-03-07 05:45:41,562 [6] INFO  Driver [2017-03-07 05:45:41,562 [6] INFO  Driver
[2017-03-07 05:45:41,578 [6] INFO  Driver [2017-03-07 05:45:41,578 [6] INFO  Driver [2017-03-07
05:45:41,593 [6] INFO  Driver [2017-03-07 05:45:41,593 [6] INFO  Driver [2017-03-07 05:45:41,609
[6] INFO  Driver [2017-03-07 05:45:41,609 [6] INFO  Driver [2017-03-07 05:45:41,625 [6] INFO
 Driver [2017-03-07 05:45:41,625 [6] INFO  Driver [2017-03-07 05:45:41,640 [1] INFO  WebcashClient
[2017-03-07 05:45:41,781 [6] INFO  Driver [2017-03-07 05:45:41,781 [6] INFO  Driver [2017-03-07
05:45:41,859 [6] ...
> As I understood it can't handle "[%property{NDC}] - %message%newline" pattern.
> Appender configuration:
>  <appender name="Driver" type="log4net.Appender.RollingFileAppender">
>       <file value="Driver" />
>       <appendToFile value="true" />
>       <encoding value="utf-8" />
>       <rollingStyle value="Date" />
>       <datePattern value="_yyyy-MM-dd'.log'" />
>       <layout type="log4net.Layout.PatternLayout">
>         <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}]
- %message%newline" />
>       </layout>
>       <threshold value="DEBUG" />
>     </appender>



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