#!/usr/bin/perl
# -*- cperl -*-
# vim: ft=perl
#
# Copyright (C) 2009 Magnus Hagander, Redpill Linpro AB
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 2 dated June,
# 1991.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA.

=head1 NAME

slony_lag_ - Plugin to monitor slony replication lag.

=head1 CONFIGURATION

Configuration is done through libpq environment variables, for example
PGUSER, PGDATABASE, etc. For more information, see L<Munin::Plugin::Pgsql>.

To monitor a specific database, link to slony_lag_<databasename>:<clustername>.

=head1 SEE ALSO

L<Munin::Plugin::Pgsql>

=head1 MAGIC MARKERS

 #%# family=auto
 #%# capabilities=autoconf

=head1 AUTHOR

Magnus Hagander <magnus@hagander.net>, Redpill Linpro AB

=head1 COPYRIGHT/License.

Copyright (c) 2009 Magnus Hagander, Redpill Linpro AB

All rights reserved. This program is free software; you can
redistribute it and/or modify it under the terms of the GNU General
Public License as published by the Free Software Foundation; version 2
dated June, 1991.

=cut

use strict;
use warnings;

use Munin::Plugin::Pgsql;

my $pg = Munin::Plugin::Pgsql->new(
    basename => 'slony_lag_',
    title    => 'Slony lag',
    info     => 'Slony replication lag',
    vlabel   => 'Lag (seconds)',
    basequery =>
        "SELECT 'node_' || st_received, extract(epoch FROM st_lag_time) FROM _%%PARAM1%%.sl_status ORDER BY 1",
    paramdatabase => 1,
    configquery =>
        "SELECT 'node_' || st_received, 'Node ' || st_received FROM _%%PARAM1%%.sl_status ORDER BY 1",
    graphdraw => 'LINE',
);

$pg->Process();
exit(0);