Re: [log4perl-devel] $Log::Log4perl::caller_depth, layout %c and %T, and category

[David C. <dpc...@ho...>]

Mike Schilli wrote:
> There's a section in the Log4perl manual thattalks about this (not easy to find, though):
> http://search.cpan.org/~mschilli/Log-Log4perl-1.31/lib/Log/Log4perl.pm#Using_Log::Log4perl_with_wrapper_functions_and_classes 

Thank you for the reply.  :-)


Yes, I read that.


> Note that if you're using qw(:easy), you need to use
> 
>     package Helper;
>     BEGIN {
>         Log::Log4perl->wrapper_register(__PACKAGE__);
>     };
>     use Log::Log4perl qw(:easy);

That code doesn't work on my system:

     2011-01-30 14:08:11 dpchrist@p43400e ~/sandbox
     $ cat log4perl-helper.pl
     #!/usr/bin/perl
     package Helper;
     BEGIN {
         Log::Log4perl->wrapper_register(__PACKAGE__);
     };
     use Log::Log4perl qw(:easy);

     2011-01-30 14:08:16 dpchrist@p43400e ~/sandbox
     $ perl log4perl-helper.pl
     Can't locate object method "wrapper_register" via package 
"Log::Log4perl" (perhaps you forgot to load "Log::Log4perl"?) at 
log4perl-helper.pl line 4.
     BEGIN failed--compilation aborted at log4perl-helper.pl line 5.


Putting the 'use' statement before the 'BEGIN' statement makes Perl 
happy, but %c still shows the Helper package, not 'main':

     2011-01-30 14:22:44 dpchrist@p43400e ~/sandbox
     $ nl log4perl-helper2.pl
          1	#!/usr/bin/perl
          2	package Helper;
          3	use Log::Log4perl qw(:easy);
          4	BEGIN {
          5	    Log::Log4perl->wrapper_register(__PACKAGE__);
          6	};
          7	sub help { DEBUG(__FILE__, __LINE__, ' ', @_) }
          8	package main;
          9	use Log::Log4perl qw(:easy);
         10	Log::Log4perl->easy_init({layout=>'%c %m %n'});
         11	DEBUG(__FILE__, __LINE__);
         12	Helper::help(__FILE__, __LINE__);

     2011-01-30 14:23:00 dpchrist@p43400e ~/sandbox
     $ perl log4perl-helper2.pl
     main log4perl-helper2.pl11
     Helper log4perl-helper2.pl7 log4perl-helper2.pl12


Any suggestions?


David


2011-01-30 14:23:03 dpchrist@p43400e ~/sandbox
$ cat /etc/debian_version
5.0.8

2011-01-30 14:24:04 dpchrist@p43400e ~/sandbox
$ perl -v

This is perl, v5.10.0 built for i486-linux-gnu-thread-multi

Copyright 1987-2007, Larry Wall

Perl may be copied only under the terms of either the Artistic License 
or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl".  If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.


2011-01-30 14:24:06 dpchrist@p43400e ~/sandbox
$ perl -MLog::Log4perl -e 'print $Log::Log4perl::VERSION, "\n"'
1.31