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#-*- perl -*-
#
# Copyright (C) 2003,2004 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.
#
# $FML: DB.pm,v 1.5 2004/01/21 03:55:12 fukachan Exp $
#
package FML::User::DB;
use strict;
use vars qw(@ISA @EXPORT @EXPORT_OK $AUTOLOAD
$debug $default_expire_period);
use Carp;
# debug
$debug = 0;
# XXX-TODO: $default_expire_period customizable ?
# 30 days
my $default_expire_period = 30*24*3600;
=head1 NAME
FML::User::DB - maintain data with expiration.
=head1 SYNOPSIS
use FML::User::DB;
my $data = new FML::User::DB $curproc;
# add
$data->add($key, $value);
# search
$data->find($key);
=head1 DESCRIPTION
=head1 METHODS
=head2 C<new()>
=cut
# Descriptions: constructor.
# Arguments: OBJ($self) OBJ($curproc) HASH_REF($dbargs)
# Side Effects: create object
# Return Value: OBJ
sub new
{
my ($self, $curproc, $dbargs) = @_;
my ($type) = ref($self) || $self;
my $me = { _curproc => $curproc };
return bless $me, $type;
}
=head2 add($class, $key, $value)
add { $key => $value } info to $primary_user_db_${class}_map.
=cut
# Descriptions: add { $key => $value } to $primary_user_db_${class}_map.
# Arguments: OBJ($self) STR($class) STR($key) STR($value)
# Side Effects: update database
# Return Value: none
sub add
{
my ($self, $class, $key, $value) = @_;
my $curproc = $self->{ _curproc };
my $config = $debug ? $curproc->{ config } : $curproc->config();
my $mapname = sprintf("primary_user_db_%s_map", $class);
my $map = $config->{ $mapname };
if ($map) {
if ($debug) { print STDERR "open map=$map\n";}
use IO::Adapter;
my $obj = new IO::Adapter $map;
$obj->open();
$obj->touch();
if ($self->find($class, $key)) { # avoid duplication.
$obj->delete($key);
}
$obj->add($key, [ $value ]);
$obj->close();
}
else {
$curproc->logerror("\$map undeflined");
}
}
=head2 find($class, $key)
search value for $key in $user_db_${class}_maps.
=cut
# Descriptions: search value for $key in $user_db_${class}_maps.
# Arguments: OBJ($self) STR($class) STR($key)
# Side Effects: update database
# Return Value: STR
sub find
{
my ($self, $class, $key) = @_;
my $curproc = $self->{ _curproc };
my $config = $curproc->config();
my $mapname = sprintf("user_db_%s_maps", $class);
my $maps = $config->get_as_array_ref( $mapname );
my $_key = quotemeta($key);
if (@$maps) {
my $obj = undef;
my $value = '';
if ($debug) { print STDERR "open maps=(@$maps)\n";}
MAP:
for my $map (@$maps) {
use IO::Adapter;
$obj = new IO::Adapter $map;
$obj->open();
$obj->touch();
# XXX FIRST MATCH. OK ?
$value = $obj->find($_key, {
want => 'key,value',
case_sensitive => 0,
});
if ($value) {
if ($value =~ /^$_key\s+|^$_key\s*$/) {
$obj->close();
last MAP;
}
}
$obj->close();
}
# XXX-TODO: $value = "key value" ? correct ?
return $value;
}
else {
$curproc->logerror("\$map undeflined");
}
}
#
# debug
#
if ($0 eq __FILE__) {
eval q{
use FML::Process::Debug;
use FML::Config;
$debug = 1;
my $cache_dir = '/tmp';
my $class = 'gecos',
my $key = 'rudo@nuinui.net';
my $value = time;
my $curproc = new FML::Process::Debug;
my $config = new FML::Config;
$curproc->{ config } = $config;
$config->set("primary_user_db_${class}_map", "$cache_dir/$class");
$config->set("user_db_${class}_maps", "$cache_dir/$class");
use FML::User::DB;
my $data = new FML::User::DB $curproc;
print STDERR "\n? add { $key => $value }\n";
$data->add($class, $key, $value);
print STDERR "\n? find( $key )\n";
my ($r) = $data->find($class, $key);
print STDERR "$r\n";
};
print STDERR $@ if $@;
}
=head1 CODING STYLE
See C<http://www.fml.org/software/FNF/> on fml coding style guide.
=head1 AUTHOR
Ken'ichi Fukamachi
=head1 COPYRIGHT
Copyright (C) 2003,2004 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::User::DB appeared in fml8 mailing list driver package.
See C<http://www.fml.org/> for more details.
=cut
1;
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