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From "Anshu Garg1" <anshug...@in.ibm.com>
Subject Re: Using log4j1.2.17 foter is not getting added to each log file in rollingfileappender
Date Tue, 05 Jan 2016 14:25:06 GMT
Hi,

Due to limited time left now for us to complete our logging application, 
today we finally achieved valid JSON files with Log4j1 itself, of course 
it is not without few undesired restrictions we put on format.

We implemented an Action class to open a log file and write footer to it. 
This action instance is being passed to RolloverDescriptionImpl()

  public RolloverDescription rollover(final String currentLogFileName) {

        WriteFooterAction action = new 
WriteFooterAction(currentLogFileName, footerText);
        String newFileName = "newLogFileName";

        return new RolloverDescriptionImpl(newFileName, false, null, 
action);
    }

Gary, I created a JIRA for providing a way to customize header and footer 
in JSONLayout format https://issues.apache.org/jira/browse/LOG4J2-1244

I'll test the https://issues.apache.org/jira/browse/LOG4J2-908 as soon as 
possible and update this thread.

-Thanks & Regards,
Anshu Garg
Platform Technology Center, India

Phone: 8800096760
E-mail: anshugarg@in.ibm.com 



From:   Remko Popma <remko.popma@gmail.com>
To:     Log4J Users List <log4j-user@logging.apache.org>
Date:   01/05/2016 07:19 PM
Subject:        Re: Using log4j1.2.17 foter is not getting added to each 
log file in rollingfileappender



FWIW, decoupling the filePattern from the rollover frequency is one of the
things I had in mind with

   1. LOG4J2-1198 <https://issues.apache.org/jira/browse/LOG4J2-1198>.


On Tuesday, 5 January 2016, Gary Gregory <garydgregory@gmail.com> wrote:

> On Mon, Jan 4, 2016 at 11:04 PM, Anshu Garg1 <anshugarg@in.ibm.com
> <javascript:;>> 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
>
>
> Hello Anshu,
>
> LOG4J2-908 <https://issues.apache.org/jira/browse/LOG4J2-908> is fixed 
in
> Git master. You can build from Git and install locally or point your 
Maven
> build to our SNAPSHOT repository here:
>
> https://repository.apache.org/content/repositories/snapshots/
>
>
> >
> > 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.
> >
>
> If you want to make the "[" and "]" customizable for the JSON layout,
> please create a JIRA. Can you describe the use case please? That would 
make
> for a better story in the documentation.
>
>
> > 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.
> >
>
> Can you be more specific please?
>
>
> >
> > 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 ?
> >
>
> You've come to the right place. Let's start with your validation that
> https://issues.apache.org/jira/browse/LOG4J2-908 has been fixed for your
> use case.
>
> Gary
>
>
> > 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 <javascript:;>>
> > To:     Log4J Users List <log4j-user@logging.apache.org <javascript:
;>>
> > 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
> <javascript:;>> 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
> > >
> >
> >
> >
> >
> >
>
>
> --
> E-Mail: garydgregory@gmail.com <javascript:;> | ggregory@apache.org
> <javascript:;>
> Java Persistence with Hibernate, Second Edition
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