Current File : //proc/thread-self/root/usr/local/share/perl5/Log/Log4perl/MDC.pm
##################################################
package Log::Log4perl::MDC;
##################################################
use 5.006;
use strict;
use warnings;
our %MDC_HASH = ();
###########################################
sub get {
###########################################
my($class, $key) = @_;
if($class ne __PACKAGE__) {
# Somebody called us with Log::Log4perl::MDC::get($key)
$key = $class;
}
if(exists $MDC_HASH{$key}) {
return $MDC_HASH{$key};
} else {
return undef;
}
}
###########################################
sub put {
###########################################
my($class, $key, $value) = @_;
if($class ne __PACKAGE__) {
# Somebody called us with Log::Log4perl::MDC::put($key, $value)
$value = $key;
$key = $class;
}
$MDC_HASH{$key} = $value;
}
###########################################
sub remove {
###########################################
%MDC_HASH = ();
1;
}
###########################################
sub get_context {
###########################################
return \%MDC_HASH;
}
1;
__END__
=encoding utf8
=head1 NAME
Log::Log4perl::MDC - Mapped Diagnostic Context
=head1 DESCRIPTION
Log::Log4perl allows loggers to maintain global thread-specific data,
called the Nested Diagnostic Context (NDC) and
Mapped Diagnostic Context (MDC).
The MDC is a simple thread-specific hash table, in which the application
can stuff values under certain keys and retrieve them later
via the C<"%X{key}"> placeholder in
C<Log::Log4perl::Layout::PatternLayout>s.
=over 4
=item Log::Log4perl::MDC->put($key, $value);
Store a value C<$value> under key C<$key> in the map.
=item my $value = Log::Log4perl::MDC->get($key);
Retrieve the content of the map under the specified key.
Typically done by C<%X{key}> in
C<Log::Log4perl::Layout::PatternLayout>.
If no value exists to the given key, C<undef> is returned.
=item my $text = Log::Log4perl::MDC->remove();
Delete all entries from the map.
=item Log::Log4perl::MDC->get_context();
Returns a reference to the hash table.
=back
Please note that all of the methods above are class methods, there's no
instances of this class. Since the thread model in perl 5.8.0 is
"no shared data unless explicitly requested" the data structures
used are just global (and therefore thread-specific).
=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