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|
#-*- perl -*-
#
# Copyright (C) 2000 Ken'ichi Fukamachi
#
# $Id$
# $FML$
#
package FML::Log;
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(Log);
@EXPORT_OK = qw(Log);
use strict;
use Carp;
use FML::Config;
use FML::Date;
use FML::Credential;
# usage: &Log( message, { log_file => $log_file } );
# return: none
#
sub Log
{
my ($mesg, $args) = @_;
my $config = new FML::Config;
# parse arguments
my $log_file = $args->{ log_file };
my $facility = $args->{ facility };
my $level = $args->{ level };
# invalid calling
$mesg || return undef ;
# reference to "date" object
my $rdate = new FML::Date;
# open the $file by using FileHandle.pm
use FileHandle;
# When the second argument is not defined, use the default log_file.
my $file = $log_file || $config->{ log_file } || '/dev/stderr';
my $fh = new FileHandle ">> $file";
my $sender = FML::Credential->sender;
if (defined $fh) {
print $fh $rdate->{'log_file_style'}, " ", $mesg;
print $fh " ($sender)" if defined $sender;
print $fh "\n";
}
else {
croak "Error: cannot open $file\n";
}
}
=head1 NAME
FML::Log.pm - several interfaces to open several files
=head1 SYNOPSIS
To import Log(),
use FML::Log qw(Log);
&Log( $log_message );
or specify arguments in the hash reference
use FML::Log qw(Log);
&Log( $log_message , {
log_file => $log_file,
facility => $facility,
level => $level,
});
=head1 DESCRIPTION
FML::Log.pm contains several interfaces for several files,
for example, log files, syslog() (not yet implemented).
=item Log( $message )
The argument is the message to log.
=head1 SEE ALSO
L<FML::Date>,
L<FML::Config>,
L<FML::BaseSystem>,
L<FileHandle>
=head1 AUTHOR
Ken'ichi Fukamachi <F<fukachan@fml.org>>
=head1 COPYRIGHT
Copyright (C) 2000 Ken'ichi Fukamachi
All rights reserved. This program is free software; you can
redistribute it and/or modify it under the same terms as Perl itself.
=head1 HISTORY
FML::Log.pm appeared in fml5.
=cut
1;
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