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From "Juan Loman (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (LOG4J2-1185) Ability to change the fileName dynamically in RollingFileAppender
Date Tue, 11 Apr 2017 21:13:41 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-1185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15964923#comment-15964923

Juan Loman edited comment on LOG4J2-1185 at 4/11/17 9:12 PM:

It's still not working for me, is it because I'm using a {{RollingRandomAccessFileAppender}}
instead of a {{RollingFileAppender}}?

*Update:* changing the appender "works", but the files have the time of the next interval.
 I have a {{TimeBasedTriggeringPolicy}} with {{interval}} of 1 (minute) and {{modulate}} does
not seem to have an effect here.

For example, it's *10:23:40* when starting the application with a pattern of {{test.%d\{HH-mm\}.log}}:

# A file {{test.10-23.log}} is created and logs events at that time, as expected.
# At *10:24:00*, no new files are created and logging is still appended to he previous file.
 _This is not expected._
# At *10:25:00*, a file {{test.10-24.log}} is created and starts appending entries for minute
# At *10:26:00*, a file {{test.10-25.log}} is created and will contain all entries for minute

I'd expect the time of the log entry to match the time of the filename, so that a log event
happening at 10:25:32 would be in {{test.10-25.log}} instead of {{test.10-24.log}}.

Am I missing something?

was (Author: jualoman):
It's still not working for me, is it because I'm using a {{RollingRandomAccessFileAppender}}
instead of a {{RollingFileAppender}}?

> Ability to change the fileName dynamically in RollingFileAppender
> -----------------------------------------------------------------
>                 Key: LOG4J2-1185
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-1185
>             Project: Log4j 2
>          Issue Type: New Feature
>          Components: Appenders
>    Affects Versions: 2.1
>            Reporter: Dhwaneet Bhatt
>            Assignee: Ralph Goers
>             Fix For: 2.8
> Right now RollingFileAppender rolls over the current file with fileName to the one generated
by FilePattern. However, logging always continues in the same fileName i.e. fileName once
created cannot be changed.
> Property Substitution is only once during initialization, fileName is never changed after
RollingFileManager is initialized. The RollingFileManager is very tightly tied up to the fileName
> Consider that I want to name my log files like this using RollingFileAppender:
> mylog-2015-10-30.log
> mylog-2015-10-29.log
> mylog-2015-10-28.log
> There is no good way to achieve this, because even after rolling over the file, the fileName
would still remain the same. If I initialized my fileName using $\{date:yyyy-MM-dd\}, date
would be substituted only once during initialization and it would never change, always continue
to log in the same log file (until I restart my application).

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