package Mylogger;

use warnings;
use strict;

use base qw(Log::Log4perl);

my @error_msgs;

sub init {
    Log::Log4perl::init(@_);
    return;
}

sub get_logger {
    $Log::Log4perl::caller_depth = 1;
    my $logger = Log::Log4perl::get_logger(@_);
    bless $logger, __PACKAGE__;
    return $logger;
}

sub error {
    my ($this, $msg) = @_;
    push(@error_msgs, "ERROR $msg");
    $this->SUPER::error($msg);
    return;
}

sub get_logged_errors {
    return \@error_msgs;
}

1;

##</code><code>##

use strict;
use warnings;
use FindBin;
use Mylogger;

my $conf = q(
    log4perl.rootLogger=DEBUG, Screen
    log4perl.appender.Screen         = Log::Log4perl::Appender::Screen
    log4perl.appender.Screen.stderr  = 0
    log4perl.appender.Screen.layout=PatternLayout
    log4perl.appender.Screen.layout.ConversionPattern=%d{ISO8601} %-5p %C %m%n
);

Mylogger::init(\$conf);

my $log = Mylogger::get_logger();

$log->error('error 1');
$log->error('error 2');

##</code><code>##

#test.pl
Can't locate object method "error" via package "Mylogger" at Mylogger.pm line 25.
Can't locate object method "DESTROY" via package "Mylogger" at /usr/opt/perl5/lib/site_perl/5.8.2/Log/Log4perl/Logger.pm line 60.
END failed--call queue aborted.