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package Log::Log4perl::JavaMap;
use Carp;
use strict;
use constant _INTERNAL_DEBUG => 0;
our %translate = (
'org.apache.log4j.ConsoleAppender' =>
'Log::Log4perl::JavaMap::ConsoleAppender',
'org.apache.log4j.FileAppender' =>
'Log::Log4perl::JavaMap::FileAppender',
'org.apache.log4j.RollingFileAppender' =>
'Log::Log4perl::JavaMap::RollingFileAppender',
'org.apache.log4j.TestBuffer' =>
'Log::Log4perl::JavaMap::TestBuffer',
'org.apache.log4j.jdbc.JDBCAppender' =>
'Log::Log4perl::JavaMap::JDBCAppender',
'org.apache.log4j.SyslogAppender' =>
'Log::Log4perl::JavaMap::SyslogAppender',
'org.apache.log4j.NTEventLogAppender' =>
'Log::Log4perl::JavaMap::NTEventLogAppender',
);
our %user_defined;
sub get {
my ($appender_name, $appender_data) = @_;
print "Trying to map $appender_name\n" if _INTERNAL_DEBUG;
$appender_data->{value} ||
die "ERROR: you didn't tell me how to implement your appender " .
"'$appender_name'";
my $perl_class = $translate{$appender_data->{value}} ||
$user_defined{$appender_data->{value}} ||
die "ERROR: I don't know how to make a '$appender_data->{value}' " .
"to implement your appender '$appender_name', that's not a " .
"supported class\n";
eval {
eval "require $perl_class"; #see 'perldoc -f require' for why two evals
die $@ if $@;
};
$@ and die "ERROR: trying to set appender for $appender_name to " .
"$appender_data->{value} using $perl_class failed\n$@ \n";
my $app = $perl_class->new($appender_name, $appender_data);
return $app;
}
#an external api to the two hashes
sub translate {
my $java_class = shift;
return $translate{$java_class} ||
$user_defined{$java_class};
}
1;
=encoding utf8
=head1 NAME
Log::Log4perl::JavaMap - maps java log4j appenders to Log::Dispatch classes
=head1 SYNOPSIS
###############################
log4j.appender.FileAppndr1 = org.apache.log4j.FileAppender
log4j.appender.FileAppndr1.File = /var/log/onetime.log
log4j.appender.FileAppndr1.Append = false
log4j.appender.FileAppndr1.layout = org.apache.log4j.PatternLayout
log4j.appender.FileAppndr1.layout.ConversionPattern=%d %4r [%t] %-5p %c %x - %m%n
###############################
=head1 DESCRIPTION
If somebody wants to create an appender called C<org.apache.log4j.ConsoleAppender>,
we want to translate it to Log::Dispatch::Screen, and then translate
the log4j options into Log::Dispatch parameters..
=head2 What's Implemented
(Note that you can always use the Log::Dispatch::* module. By 'implemented'
I mean having a translation class that translates log4j options into
the Log::Dispatch options so you can use log4j rather than log4perl
syntax in your config file.)
Here's the list of appenders I see on the current (6/2002) log4j site.
These are implemented
ConsoleAppender - Log::Dispatch::Screen
FileAppender - Log::Dispatch::File
RollingFileAppender - Log::Dispatch::FileRotate (by Mark Pfeiffer)
JDBCAppender - Log::Log4perl::Appender::DBI
SyslogAppender - Log::Dispatch::Syslog
NTEventLogAppender - Log::Dispatch::Win32EventLog
These should/will/might be implemented
DailyRollingFileAppender -
SMTPAppender - Log::Dispatch::Email::MailSender
These might be implemented but they don't have corresponding classes
in Log::Dispatch (yet):
NullAppender
TelnetAppender
These might be simulated
LF5Appender - use Tk?
ExternallyRolledFileAppender - catch a HUP instead?
These will probably not be implemented
AsyncAppender
JMSAppender
SocketAppender - (ships a serialized LoggingEvent to the server side)
SocketHubAppender
=head1 ROLL YOUR OWN
Let's say you've in a mixed Java/Perl environment and you've
come up with some custom Java appender with behavior you want to
use in both worlds, C<myorg.customAppender>. You write a
Perl appender with the same behavior C<Myorg::CustomAppender>. You
want to use one config file across both applications, so the
config file will have to say 'myorg.customAppender'. But
the mapping from C<myorg.customAppender> to C<Myorg::CustomAppender>
isn't in this JavaMap class, so what do you do?
In your Perl code, before you call Log::Log4perl::init(), do this:
$Log::Log4perl::JavaMap::user_defined{'myorg.customAppender'} =
'Myorg::CustomAppender';
and you can use 'myorg.customAppender' in your config file with
impunity.
=head1 SEE ALSO
http://jakarta.apache.org/log4j/docs/
=head1 LICENSE
Copyright 2002-2013 by Mike Schilli E<lt>m@perlmeister.comE<gt>
and Kevin Goess E<lt>cpan@goess.orgE<gt>.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 AUTHOR
Please contribute patches to the project on Github:
http://github.com/mschilli/log4perl
Send bug reports or requests for enhancements to the authors via our
MAILING LIST (questions, bug reports, suggestions/patches):
log4perl-devel@lists.sourceforge.net
Authors (please contact them via the list above, not directly):
Mike Schilli <m@perlmeister.com>,
Kevin Goess <cpan@goess.org>
Contributors (in alphabetical order):
Ateeq Altaf, Cory Bennett, Jens Berthold, Jeremy Bopp, Hutton
Davidson, Chris R. Donnelly, Matisse Enzer, Hugh Esco, Anthony
Foiani, James FitzGibbon, Carl Franks, Dennis Gregorovic, Andy
Grundman, Paul Harrington, Alexander Hartmaier David Hull,
Robert Jacobson, Jason Kohles, Jeff Macdonald, Markus Peter,
Brett Rann, Peter Rabbitson, Erik Selberg, Aaron Straup Cope,
Lars Thegler, David Viner, Mac Yang.
Mini Shell