logging-log4j-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ralph Goers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-921) Allow to log some important information at the start of each new roll over log file when using RollingFile Appender
Date Tue, 16 Dec 2014 05:39:13 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-921?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14247799#comment-14247799
] 

Ralph Goers commented on LOG4J2-921:
------------------------------------

Try using 2 '$' characters. I suspect the header string is being processed during initial
configuration before it is even passed to PatternLayout. With 2 '$' character the first will
be stripped during initial configuration and then the second will result in the value being
replaced in the getHeader call.

> Allow to log some important information at the start of each new roll over log file when
using RollingFile Appender
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: LOG4J2-921
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-921
>             Project: Log4j 2
>          Issue Type: Improvement
>          Components: Appenders
>    Affects Versions: 2.1
>            Reporter: Setu
>
> if someone wants to log some important information at the start of each roll over log
file there is no mechanism present in current version. The header attribute in PatternLayout
barely does the job because it logs the header at the start of each system startup. 
> Example: There is a requirement to log some system properties (or any other details,
environment details, etc) at the each roll over so that it becomes easy to determine on which
environment the software is running. When tried to use header attribute on a software that
continuously runs on server it did not work as expected instead the header was logged whenever
the server got restarted. 
> Also how can they key supplied in header attribute be logged with line breaks. 
> Example: when using {{header="$\{java:runtime} - $\{java:vm} - $\{java:os}"}} it prints
all the information in same line which makes it unreadable if someone wants more details.

> Implementing a custom lookup did not help either as all it did was kept logging the custom
lookup key in header attribute at each system restart instead of at the start of new rollover
file. 



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: log4j-dev-unsubscribe@logging.apache.org
For additional commands, e-mail: log4j-dev-help@logging.apache.org


Mime
View raw message