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perlloggingstdoutstderrlog4perl

directing all output of a perl script to file and screen


I have a perl script that uses log4perl to log all output to screen and file. Problem is, certain output does not get directed to log4perl.

Script -

use strict;
use warnings 'FATAL' => 'all';
use Log::Log4perl;
use File::Find;

my $log_conf = "log4perl.conf";
Log::Log4perl::init($log_conf);
my $logp       = Log::Log4perl->get_logger();
my $dirSource  = 'C:\box';

sub doFileList {
    $logp->info('doing dir compare');
    find( { wanted => \&process_file, no_chdir => 1 }, $dirSource);
}

sub process_file {
    if (-f $_) {
        print "This is a file: $_\n";
    } else {
        print "This is not file: $_\n";
    }
}

#main
$logp->info('start');
eval { doFileList(); };
if ($@) {
    $logp->error( 'error: ', $@ );
}
$logp->info('stop');

Log4perl config -

log4perl.rootLogger              = DEBUG, screen, file

log4perl.appender.screen         = Log::Log4perl::Appender::Screen
log4perl.appender.screen.stderr  = 0
log4perl.appender.screen.layout  = Log::Log4perl::Layout::PatternLayout
log4perl.appender.screen.layout.ConversionPattern = %d [%M:%L] %p  %F{2} - %m%n

log4perl.appender.file          = Log::Log4perl::Appender::File
log4perl.appender.file.filename = log/compare.log
log4perl.appender.file.mode     = append
log4perl.appender.file.layout   = Log::Log4perl::Layout::PatternLayout
log4perl.appender.file.layout.ConversionPattern = %d [%M:%L] %p  %F{2} - %m%n

Here is the output on screen/ide -

2013/03/04 11:56:28 [main:::29] INFO  DirCompare\DirCompare.pl - start
2013/03/04 11:56:28 [tools::dircompare::doFileList:16] INFO  DirCompare\DirCompare.pl - doing dir compare
This is not file: C:\box
This is a file: C:\box\test01.JPG
This is a file: C:\box\test02.JPG
2013/03/04 11:56:28 [main:::34] INFO  DirCompare\DirCompare.pl - stop

Here is the output in log file -

2013/03/04 11:56:28 [main:::29] INFO  DirCompare\DirCompare.pl - start
2013/03/04 11:56:28 [tools::dircompare::doFileList:16] INFO  DirCompare\DirCompare.pl - doing dir compare
2013/03/04 11:56:28 [main:::34] INFO  DirCompare\DirCompare.pl - stop

I know i am using print statements instead of log->info, but i would like the log4perl config to be such that all output of the script, irrespective of how it is generated, is directed to log4perl.

any ideas on how i can do this ?


Solution

  • I used 'IPC::Run3' to capture output of any commands/functions that couldn't be captured by log->info/error. I then printed this captured output to log->info/error.

    Just to clarify, what i was trying to do above is to capture output of commands executed within the perl code, and redirect that output to log.