Log::Log4perl におけるバッファリング防止は、log4perl.appender.Logfile.autoflush=1

メモ

use strict;
use warnings;
use Date::Calc;
use Log::Log4perl;
   

my $CONF =
    {log=>
     {
#      'log4perl.rootLogger'=> 'INFO, LOGFILE',
      'log4perl.rootLogger'=> 'DEBUG, LOGFILE, CONSOLE',
      'log4perl.appender.LOGFILE'=>'Log::Log4perl::Appender::File',
      #↓ココ。「1」でバッファリング防止
      'log4perl.appender.Logfile.autoflush' => 1,
      'log4perl.appender.LOGFILE.dir'=> $APP_ROOT,
      'log4perl.appender.LOGFILE.filename'=> $APP_ROOT. 'migrate.log',
      'log4perl.appender.LOGFILE.mode'=>'append',
      'log4perl.appender.LOGFILE.layout'=>'Log::Log4perl::Layout::PatternLayout',
      'log4perl.appender.LOGFILE.layout.ConversionPattern'=>'%d [%p] %m %n',

      'log4perl.appender.CONSOLE'=> 'Log::Log4perl::Appender::Screen',
      'log4perl.appender.CONSOLE.layout' => 'Log::Log4perl::Layout::PatternLayout',
      'log4perl.appender.CONSOLE.layout.ConversionPattern' => '%d [%p] %m %n'},
    };
my $LOGGER;


sub do_main {
    my ($self ) = @_;
    $LOGGER = init_logger();

    $LOGGER->error($tmp_msg);
}

sub init_logger {

    Log::Log4perl::init($CONF->{log});
    my $logger = Log::Log4perl::get_logger("rootLogger");
    unless($logger){
        die "fail init_logger() $!";
    }
    return $logger;
}