Log4perl stops logging after update to 1.24

kreetrapper has asked for the wisdom of the Perl Monks concerning the following question:

Greetings, fellow monks.

I am using Log4perl 1.20 in my project and it worked fine, but then I updated to version 1.24 a couple of days ago and now nothing is logged anymore.

I looked in the changelog and googled/super-searched a bit, but I found nothing that seems to imply a major change in the way Log4perl works. Maybe one of you is experiencing similar problems and can help me understand what I can do to make my program work again. I could probably switch back to version 1.20 but that doesn't seem like the optimal solution.

Here is a reduced test case which worked fine with Log4perl 1.20 but doesn't output anything with Log4perl 1.24.

use strict;
use warnings;
use Log::Log4perl;

# Define a logger
my $log = Log::Log4perl->get_logger("abc.def.ghi");

# Define a logger layout
my $layout = Log::Log4perl::Layout::PatternLayout->new("%d > %m %n");

# define appender for console output
my $appender_screen = Log::Log4perl::Appender->new("Log::Log4perl::App
+ender::Screen",name => 'console');

# Set the appender's layout and add it
$appender_screen->layout($layout);
$log->add_appender($appender_screen);

$log->info("This is an info message");

$log->error("This is an error message");
[download]

Comment on Log4perl stops logging after update to 1.24 Download Code

Replies are listed 'Best First'.
Re: Log4perl stops logging after update to 1.24 by broomduster (Priest) on Sep 08, 2009 at 16:19 UTC
If I insert the following before your log messages, I get the info and error messages on my terminal. `use Log::Log4perl::Level; $log->level($ERROR);` [download] Disclaimer: I only recently started to fiddle with `Log::Log4perl`, so I don't know if this is new to 1.24 or not, but it at least seems to do what you want.	[reply] [d/l] [select]
Re: Log4perl stops logging after update to 1.24 by Anonymous Monk on Sep 08, 2009 at 15:53 UTC
After checking grep -C2 add_appende Log-Log4perl-1.24 I see you are missing $logger->level($DEBUG);, and adding `$log->level($Log::Log4perl::DEBUG);` [download] to your example produces output. I'm not sure if this is a bug or feature.	[reply] [d/l]
Re^2: Log4perl stops logging after update to 1.24 by kreetrapper (Scribe) on Sep 14, 2009 at 06:52 UTC
Ah, thank you so much! It's probably a feature that you have to set the log level explicitly. But I still do not understand why this change didn't make it into the release notes.	[reply]
Re^3: Log4perl stops logging after update to 1.24 by Anonymous Monk on Sep 14, 2009 at 11:00 UTC
Maybe you were using `Log::Log4perl->easy_init()` before? easy_init sets level to $DEBUG by default.	[reply] [d/l]
Re^4: Log4perl stops logging after update to 1.24 by kreetrapper (Scribe) on Sep 21, 2009 at 07:35 UTC


Welcome to the Monastery
	PerlMonks