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From Gary Gregory <garydgreg...@gmail.com>
Subject Re: Using log4j1.2.17 foter is not getting added to each log file in rollingfileappender
Date Wed, 06 Jan 2016 03:32:15 GMT
On Tue, Jan 5, 2016 at 2:51 PM, Remko Popma <remko.popma@gmail.com> wrote:

> Thanks for raising these issues. In addition to Gary's response, can I ask
> some more questions to clarify?
>
> 1. Does LOG4J2-1101 <https://issues.apache.org/jira/browse/LOG4J2-1101>
> capture
> your first requirement for a date in the pre-rollover file name?
> 3. I believe you are already verifying the fix for LOG4J2-908
> <https://issues.apache.org/jira/browse/LOG4J2-908>, so that's in progress.
> 4. I commented on your ticket LOG4J2-1244
> <https://issues.apache.org/jira/browse/LOG4J2-1244> for the custom
> header/footer, let us know if that won't work.
>

This one is done (in Git master).

Gary


> 5. Decoupling file pattern from rollover frequency can be achieved with
> CronTriggerPolicy
> <
> http://logging.apache.org/log4j/2.x/manual/appenders.html#TriggeringPolicies
> >
> since 2.5. Does this do what you have in mind? (You mention LOG4J2-573
> <https://issues.apache.org/jira/browse/LOG4J2-573>, but it looks like that
> ticket is about something else, unless I misunderstand).
> 6. Custom log fields, are these items that cannot be covered with Lookups
> <http://logging.apache.org/log4j/2.x/manual/lookups.html> or ThreadContext
> (MDC) <http://logging.apache.org/log4j/2.x/manual/thread-context.html>
> values? Like Gary, I'd like to understand better.
>
>
> On Tue, Jan 5, 2016 at 4:04 PM, Anshu Garg1 <anshugarg@in.ibm.com> wrote:
>
> > Hi Ralph,
> >
> > We  have actually tried log4j2, but unfortunately with that also we could
> > not meet our requirements
> >
> >  We are trying a JSON log using rolling file appender based on both time
> > and size but we are facing below challenges
> >
> > 1. Apache log4j2 default roll over implementation adds time stamp to log
> > file name  while saving and closing, while our requirement is to add time
> > stamp to file name at the time of file creation. For this we implemented
> > our own rollover strategy. But that was not a complete solution since
> > first file name was saved in rolling file appender without time stamp and
> > to change that we extended "AbstractOutputStreamAppender" to create our
> > own RollingFileAppender (but most of code in it is from Apache, except
> > what we had to modify to set first file name with time stamp).
> >
> >
> http://stackoverflow.com/questions/30059333/log4j2-rolling-appender-filename-sliding-according-to-pattern
> >
> >
> >
> http://stackoverflow.com/questions/14862770/log4j2-assigning-file-appender-filename-at-runtime
> >
> >
> > 2. Above lead to mismatch between  the type of parameters in various
> other
> > classes' methods where default Apache classes' types  were expected  but
> > we were using our own implementation. So we had to use source code for
> > such classes as is and just replace parameters' types from default to our
> > implemented classes.
> >
> > 3. By default JSON Layout from Apache log4j2 has a non resolved defect
> > which does not write a valid JSON. Log entries do not have a comma
> between
> > then which results in invalid JSON. To rectify this we implemented our
> own
> > layout. This again has most of the code from Apache but few changes here
> > and there to get comma at start of each entry except first.
> > https://issues.apache.org/jira/browse/LOG4J2-908
> >
> > 4. We had to customize header and footer values as per our requirement,
> > since default in Apache default header is "[" and footer is "]". While we
> > needed more information in header section.
> >
> > 5. With Apache log4j2's default behavior for time based rollover
> >  duration's unit was determined by file pattern. We had to make duration
> > time unit independent of file pattern because with default behavior  if a
> > user wanted time stamp in file name till mili seconds then even file
> > rollover would happen in mili seconds which is not desired. And if user
> > wanted hourly or daily roll over then file stamp could only be used till
> > date or hour. To be able to specify duration in a definite unit (minutes
> > in our case) we had to implement our own PatternProcessor.
> > https://issues.apache.org/jira/browse/LOG4J2-573
> >
> > 6. We needed to add some custom log fields in JSON logs for which we had
> > to write our own LogEntry and MessageFactory.
> >
> > All above needed to write own classes with most functionality copied from
> > Apache which means we could not achieve above with just extending the
> > Apache classes. We had to make source code changes which we want to
> avoid.
> > Do you have any suggestion to overcome above without having to fork code
> > of Log4j2 ?
> >
> > We did not find any solution to above so we came back to Log4j1. Is there
> > a way round to get footer in Log4j1 or Log4j2,  with above requirements,
> > without having to change source code ?
> >
> >
> > -Thanks & Regards,
> > Anshu Garg
> > Platform Technology Center, India
> >
> >
> >
> >
> >
> > From:   Ralph Goers <ralph.goers@dslextreme.com>
> > To:     Log4J Users List <log4j-user@logging.apache.org>
> > Date:   01/05/2016 12:04 PM
> > Subject:        Re: Using log4j1.2.17 foter is not getting added to each
> > log file in rollingfileappender
> >
> >
> >
> > Please see
> >
> >
> https://blogs.apache.org/foundation/entry/apache_logging_services_project_announces
> > <
> >
> >
> https://blogs.apache.org/foundation/entry/apache_logging_services_project_announces
> > >.
> >
> > Ralph
> >
> > > On Jan 4, 2016, at 11:14 PM, Anshu Garg1 <anshugarg@in.ibm.com> wrote:
> > >
> > > Hi,
> > >
> > > We have extended patternlayout to set custom footer and header. Now
> when
> >
> > > we use this pattern in rolling file appender footer is only added to
> > last
> > > log file generated while header is added to all files. Our requirement
> > is
> > > to have footer also added to files created. Any suggestion? Here is the
> > > snippet.
> > >
> > > Logger logger = Logger.getLogger("myLogger");
> > > CustomPattern pattern = new CustomPattern();
> > > pattern.setHeader("HeaderText");
> > > pattern.setFooter("FooterText");
> > > rollingFileAppender.setLayout(pattern);
> > >
> > > -Thanks & Regards,
> > > Anshu Garg
> > > Platform Technology Center, India
> > >
> >
> >
> >
> >
> >
>



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