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#!/usr/bin/perl -w

###############################################################################

#    Webmin Sysstats - mem-lib.pl

#

#    Webmin Sysstats Module

#    Copyright (C) 2001 by David Bouius

#    Bug reports to: gerbier@users.sourceforge.net

#    $Id$

#

#    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; either version 2 of the License, or

#    (at your option) any later version.

#

#    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.

#

###############################################################################



use strict;

use warnings;



unset_warnings();

require RRDs;

set_warnings();



# web-lib.pl

use vars qw( %config %in %text $cb);



# sysstat-lib.pl

use subs qw(&debug debug_sub_begin debug_sub_end &add_rra &install_script );



my $database  = 'mem.rrd';

my $database2 = 'mem2.rrd';

my $fscript   = 'mem.pl';



###############################################################################

sub install_module($$) {

	my ( $minfo, $defaults ) = ( $_[0], $_[1] );



	debug_sub_begin();



	my %my_config;

	$my_config{'name'}        = 'mem';

	$my_config{'sample_rate'} = 1;

	$my_config{'graph_type'}  = 1;

	$my_config{'nb_graph'}    = 2;

	$my_config{'runstop'}     = 0;

	$my_config{'cf'}          = 'AVERAGE';

	$my_config{'keep'}        = 1;



	my $heartbeat = compute_heartbeat( $my_config{'sample_rate'} );

	my $cf        = $my_config{'cf'};



	if ( !-r $minfo->{'dbtables'} . $database ) {

		my $cmd = $minfo->{'dbtables'} . $database;

		$cmd .= get_create_common();

		$cmd .= " DS:mtotal:GAUGE:$heartbeat:0:U";

		$cmd .= " DS:mused:GAUGE:$heartbeat:0:U";

		$cmd .= " DS:stotal:GAUGE:$heartbeat:0:U";

		$cmd .= " DS:sused:GAUGE:$heartbeat:0:U";



		$cmd .= add_rra($cf);

		debug("rrdtool create $cmd");

		my @cmd = split( ' ', $cmd );

		RRDs::create(@cmd);

		my $ERR = RRDs::error();

		warning("can not create database $database : $ERR") if $ERR;

	}

	if ( !-r $minfo->{'dbtables'} . $database2 ) {

		my $cmd = $minfo->{'dbtables'} . $database2;

		$cmd .= get_create_common();

		$cmd .= " DS:mshared:GAUGE:$heartbeat:0:U";

		$cmd .= " DS:mbuffers:GAUGE:$heartbeat:0:U";

		$cmd .= " DS:mcached:GAUGE:$heartbeat:0:U";



		$cmd .= add_rra($cf);

		debug("rrdtool create $cmd");

		my @cmd = split( ' ', $cmd );

		RRDs::create(@cmd);

		my $ERR = RRDs::error();

		warning("can not create database $database2 : $ERR") if $ERR;

	}



	$my_config{'mem'} = pack_config(

		$defaults->{'real_colour'},   $defaults->{'swap_colour'},

		$defaults->{'shared_colour'}, $defaults->{'buffer_colour'},

		$defaults->{'cached_colour'}, $defaults->{'free_colour'}

	);



	write_config( $minfo, \%my_config );

	install_script( $minfo, $fscript );

	debug_sub_end();



	return 1;

}



###############################################################################

sub graph_data($$) {

	my ( $minfo, $my_config ) = ( $_[0], $_[1] );

	debug_sub_begin();



	my (

		$real_config,   $swap_config,   $shared_config,

		$buffer_config, $cached_config, $free_config

	) = unpack_config( $my_config->{'mem'} );



	my ( $real_colour,   $real_line )   = get_line_config($real_config);

	my ( $swap_colour,   $swap_line )   = get_line_config($swap_config);

	my ( $shared_colour, $shared_line ) = get_line_config($shared_config);

	my ( $buffer_colour, $buffer_line ) = get_line_config($buffer_config);

	my ( $cached_colour, $cached_line ) = get_line_config($cached_config);

	my ( $free_colour,   $free_line )   = get_line_config($free_config);



	my $cf = $my_config->{'cf'};



	# cgi parameters

	my ( $graph_type, $c_display ) = get_cgi_graph($my_config);



	my @rrd_detals = ( '--rigid', '-u', 100, '-v', '% use' );

	push( @rrd_detals,

		'DEF:mtotal=' . $minfo->{'dbtables'} . $database . ':mtotal:' . $cf );

	push( @rrd_detals,

		'DEF:mused=' . $minfo->{'dbtables'} . $database . ':mused:' . $cf );

	push( @rrd_detals,

		'DEF:stotal=' . $minfo->{'dbtables'} . $database . ':stotal:' . $cf );

	push( @rrd_detals,

		'DEF:sused=' . $minfo->{'dbtables'} . $database . ':sused:' . $cf );



	push( @rrd_detals,

		    'DEF:mbuffers='

		  . $minfo->{'dbtables'}

		  . $database2

		  . ':mbuffers:'

		  . $cf );

	push( @rrd_detals,

		    'DEF:mcached='

		  . $minfo->{'dbtables'}

		  . $database2

		  . ':mcached:'

		  . $cf );



	push( @rrd_detals, 'CDEF:memfree=mtotal,mused,-,mbuffers,-,mcached,-' );



	#'CDEF:memfree=mtotal,mused,-,mshared,-,mbuffers,-,mcached,-' );

	push( @rrd_detals, 'CDEF:mmed=mused,100,*,mtotal,/' );



	#push( @rrd_detals, 'CDEF:msha=mshared,100,*,mtotal,/' );

	push( @rrd_detals, 'CDEF:mbuf=mbuffers,100,*,mtotal,/' );

	push( @rrd_detals, 'CDEF:mca=mcached,100,*,mtotal,/' );



	#push ( @rrd_detals, 'CDEF:mfree=memfree,100,*,mtotal,/' );

	#push( @rrd_detals, 'CDEF:mfree=100,mmed,-,msha,-,mbuf,-,mca,-' );

	push( @rrd_detals, 'CDEF:mfree=100,mmed,-,mbuf,-,mca,-' );

	push( @rrd_detals, 'CDEF:smed=sused,100,*,stotal,/' );

	push( @rrd_detals,

		"COMMENT:Type        Max      Min  $text{'graph_average'}\\n" );



	if ( $graph_type == 1 ) {



		# lines

		push( @rrd_detals, $real_line . ':mmed#' . $real_colour . ':Programs' );

		gprint( 'mmed', \@rrd_detals );



		#push( @rrd_detals,

		#	$shared_line . ':msha#' . $shared_colour . ':shared' );

		#gprint( 'msha', \@rrd_detals );

		push( @rrd_detals,

			$buffer_line . ':mbuf#' . $buffer_colour . ':buffers' );

		gprint( 'mbuf', \@rrd_detals );

		push( @rrd_detals,

			$cached_line . ':mca#' . $cached_colour . ':cached' );

		gprint( 'mca', \@rrd_detals );

		push( @rrd_detals, $free_line . ':mfree#' . $free_colour . ':free' );

		gprint( 'mfree', \@rrd_detals );

		push( @rrd_detals, $swap_line . ':smed#' . $swap_colour . ':Swap' );

		gprint( 'smed', \@rrd_detals );



	}

	else {



		# histograms

		push( @rrd_detals, 'AREA:mmed#' . $real_colour . ':Programs' );

		gprint( 'mmed', \@rrd_detals );



		#push( @rrd_detals, 'STACK:msha#' . $shared_colour . ':shared' );

		#gprint( 'msha', \@rrd_detals );

		push( @rrd_detals, 'STACK:mbuf#' . $buffer_colour . ':buffers' );

		gprint( 'mbuf', \@rrd_detals );

		push( @rrd_detals, 'STACK:mca#' . $cached_colour . ':cached' );

		gprint( 'mca', \@rrd_detals );

		push( @rrd_detals, 'STACK:mfree#' . $free_colour . ':free' );

		gprint( 'mfree', \@rrd_detals );

		push( @rrd_detals, $swap_line . ':smed#' . $swap_colour . ':Swap' );

		gprint( 'smed', \@rrd_detals );



	}



	graph_common( $minfo, $my_config, @rrd_detals );

	debug_sub_end();

	return;

}



###############################################################################

sub mod_config($$$) {

	my ( $minfo, $my_config, $defaults ) = ( $_[0], $_[1], $_[2] );

	debug_sub_begin();



	my (

		$real_config,   $swap_config,   $shared_config,

		$buffer_config, $cached_config, $free_config

	) = unpack_config( $my_config->{'mem'} );



	my ( $real_colour,   $real_line )   = get_line_config($real_config);

	my ( $swap_colour,   $swap_line )   = get_line_config($swap_config);

	my ( $shared_colour, $shared_line ) = get_line_config($shared_config);

	my ( $buffer_colour, $buffer_line ) = get_line_config($buffer_config);

	my ( $cached_colour, $cached_line ) = get_line_config($cached_config);

	my ( $free_colour,   $free_line )   = get_line_config($free_config);



	begin_html_config();



	change_database( $minfo, $my_config );

	change_local_params($my_config);

	change_scale( $minfo, $my_config );

	change_default( $my_config->{'graph_type'},

		$text{'word_line'}, $text{'word_bar'} );



	separator();



	# colors

	titre_table( $text{'module_subtitle'} );

	begin_table('colors');    # colors



	# memory

	print "<tr>\n";

	title_row( $text{'module_word_real'}, w15() );

	option_colourselect( 'real', $real_colour, $defaults->{'real_colour'} );

	option_lineselect( 'real', $real_line );

	print "</tr>\n";



	# buffers

	print "<tr>\n";

	title_row( $text{'module_word_buffers'}, w15() );

	option_colourselect( 'buffer', $buffer_colour,

		$defaults->{'buffer_colour'} );

	option_lineselect( 'buffer', $buffer_line );

	print "</tr>\n";



	# cached

	print "<tr>\n";

	title_row( $text{'module_word_cached'}, w15() );

	option_colourselect( 'cached', $cached_colour,

		$defaults->{'cached_colour'} );

	option_lineselect( 'cached', $cached_line );

	print "</tr>\n";



	# free

	print "<tr>\n";

	title_row( $text{'module_word_free'}, w15() );

	option_colourselect( 'free', $free_colour, $defaults->{'free_colour'} );

	option_lineselect( 'free', $free_line );

	print "</tr>\n";



	# swap

	print "<tr>\n";

	title_row( $text{'module_word_swap'} );

	option_colourselect( 'swap', $swap_colour, $defaults->{'swap_colour'} );

	option_lineselect( 'swap', $swap_line );

	print "</tr>\n";

	end_table();    # colors



	# button

	end_html_config();

	debug_sub_end();

	return;

}



###############################################################################

sub mod_config_save($$$) {

	my ( $minfo, $my_config, $defaults ) = ( $_[0], $_[1], $_[2] );

	debug_sub_begin();



	$my_config->{'mem'} = pack_config(

		line_col( 'real',   $defaults->{'real_colour'} ),

		line_col( 'swap',   $defaults->{'swap_colour'} ),

		line_col( 'shared', $defaults->{'shared_colour'} ),

		line_col( 'buffer', $defaults->{'buffer_colour'} ),

		line_col( 'cached', $defaults->{'cached_colour'} ),

		line_col( 'free',   $defaults->{'free_colour'} ),

	);



	test_database_change( $minfo, $my_config );

	test_local_params($my_config);

	test_scale_change( $minfo, $my_config );

	test_default_change($my_config);



	write_config( $minfo, $my_config );

	debug_sub_end();

	return;

}



###############################################################################

sub write_config($$) {

	my ( $minfo, $my_config ) = ( $_[0], $_[1] );

	debug_sub_begin();



	common_write_config( $minfo, $my_config );

	debug_sub_end();

	return;

}

###############################################################################

sub upgrade($$$) {

	my ( $minfo, $my_config, $defaults ) = ( $_[0], $_[1], $_[2] );

	debug_sub_begin();



	debug_sub_end();

	return;

}

###############################################################################



1;