<?php
include_once "./libtoga.php";

if ( !empty( $_GET ) ) {
        extract( $_GET );
}

# Graph specific variables
$size = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["z"] ));
$graph = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["g"] ));
$grid = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["G"] ));
$self = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["me"] ));
$max = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["x"] ));
$min = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["n"] ));
$value = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["v"] ));
$load_color = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["l"] ));
$vlabel = escapeshellcmd( rawurldecode( $HTTP_GET_VARS["vl"] ));
$sourcetime = escapeshellcmd($HTTP_GET_VARS["st"]);

$cluster = $c;
$metricname = ($g) ? $g : $m;
$hostname = $h;

# Assumes we have a $start variable (set in get_context.php).
if ($size == "small") {
	$height = 40;
	$width = 130;
} else if ($size == "medium") {
	$height = 75;
	$width = 300;
} else {
	$height = 100;
	$width = 400;
}

if($command) {
      $command = '';
}

//printf( "cluster = %s hostname = %s metric = %s\n", $cluster, $hostname, $metricname );

$trd = new TarchRrdGraph( $cluster, $hostname );
//$rrd_files = $trd->getRrdFiles( $metricname, $start, $stop );

//print_r( $rrd_files );

$graph = $metricname;

if (isset($graph)) {
	$rrd_dirs = $trd->getRrdDirs( $period_start, $period_stop );
	$series = '';

	if($graph == "cpu_report") {
		$style = "CPU";
		//printf("ik doe die shit!\n");

		$upper_limit = "--upper-limit 100 --rigid";
		$lower_limit = "--lower-limit 0";

		$vertical_label = "--vertical-label Percent ";

		$def_nr = 0;

		foreach( $rrd_dirs as $rrd_dir ) {

			if( $def_nr == 0 ) {

				$user_str = ":'User CPU'";
				$nice_str = ":'Nice CPU'";
				$system_str = ":'System CPU'";
				$wio_str = ":'WAIT CPU'";
				$idle_str = ":'Idle CPU'";
			} else {

				$user_str = "";
				$nice_str = "";
				$system_str = "";
				$wio_str = "";
				$idle_str = "";
			}

			$series .= "DEF:'cpu_user${def_nr}'='${rrd_dir}/cpu_user.rrd':'sum':AVERAGE "
				."DEF:'cpu_nice${def_nr}'='${rrd_dir}/cpu_nice.rrd':'sum':AVERAGE "
				."DEF:'cpu_system${def_nr}'='${rrd_dir}/cpu_system.rrd':'sum':AVERAGE "
				."DEF:'cpu_idle${def_nr}'='${rrd_dir}/cpu_idle.rrd':'sum':AVERAGE "
				."AREA:'cpu_user${def_nr}'#${cpu_user_color}${user_str} "
				."STACK:'cpu_nice${def_nr}'#${cpu_nice_color}${nice_str} "
				."STACK:'cpu_system${def_nr}'#${cpu_system_color}${system_str} ";

			if (file_exists("$rrd_dir/cpu_wio.rrd")) {
				$series .= "DEF:'cpu_wio${def_nr}'='${rrd_dir}/cpu_wio.rrd':'sum':AVERAGE "
					."STACK:'cpu_wio${def_nr}'#${cpu_wio_color}${wio_str} ";
			}

			$series .= "STACK:'cpu_idle${def_nr}'#${cpu_idle_color}${idle_str} ";

			$def_nr++;
		}

	} else if ($graph == "mem_report") {
		$style = "Memory";

		$lower_limit = "--lower-limit 0 --rigid";
		$extras = "--base 1024";
		$vertical_label = "--vertical-label Bytes";

		$def_nr = 0;

		foreach( $rrd_dirs as $rrd_dir ) {

			if( $def_nr == 0 ) {

				$memuse_str = ":'Memory Used'";
				$memshared_str = ":'Memory Shared'";
				$memcached_str = ":'Memory Cached'";
				$membuff_str = ":'Memory Buffered'";
				$memswap_str = ":'Memory Swapped'";
				$total_str = ":'Total In-Core Memory'";
			} else {

				$memuse_str = "";
				$memshared_str = "";
				$memcached_str = "";
				$membuff_str = "";
				$memswap_str = "";
				$total_str = "";
			}

			$series .= "DEF:'mem_total${def_nr}'='${rrd_dir}/mem_total.rrd':'sum':AVERAGE "
				."CDEF:'bmem_total${def_nr}'=mem_total${def_nr},1024,* "
				."DEF:'mem_shared${def_nr}'='${rrd_dir}/mem_shared.rrd':'sum':AVERAGE "
				."CDEF:'bmem_shared${def_nr}'=mem_shared${def_nr},1024,* "
				."DEF:'mem_free${def_nr}'='${rrd_dir}/mem_free.rrd':'sum':AVERAGE "
				."CDEF:'bmem_free${def_nr}'=mem_free${def_nr},1024,* "
				."DEF:'mem_cached${def_nr}'='${rrd_dir}/mem_cached.rrd':'sum':AVERAGE "
				."CDEF:'bmem_cached${def_nr}'=mem_cached${def_nr},1024,* "
				."DEF:'mem_buffers${def_nr}'='${rrd_dir}/mem_buffers.rrd':'sum':AVERAGE "
				."CDEF:'bmem_buffers${def_nr}'=mem_buffers${def_nr},1024,* "
				."CDEF:'bmem_used${def_nr}'='bmem_total${def_nr}','bmem_shared${def_nr}',-,'bmem_free${def_nr}',-,'bmem_cached${def_nr}',-,'bmem_buffers${def_nr}',- "
				."AREA:'bmem_used${def_nr}'#${mem_used_color}${memuse_str} "
				."STACK:'bmem_shared${def_nr}'#${mem_shared_color}${memshared_str} "
				."STACK:'bmem_cached${def_nr}'#${mem_cached_color}${memcached_str} "
				."STACK:'bmem_buffers${def_nr}'#${mem_buffered_color}${membuff_str} ";

			if (file_exists("$rrd_dir/swap_total.rrd")) {
				$series .= "DEF:'swap_total${def_nr}'='${rrd_dir}/swap_total.rrd':'sum':AVERAGE "
					."DEF:'swap_free${def_nr}'='${rrd_dir}/swap_free.rrd':'sum':AVERAGE "
					."CDEF:'bmem_swapped${def_nr}'='swap_total${def_nr}','swap_free${def_nr}',-,1024,* "
					."STACK:'bmem_swapped${def_nr}'#${mem_swapped_color}${memswap_str} ";
			}

			$series .= "LINE2:'bmem_total${def_nr}'#${cpu_num_color}${total_str} ";

			$def_nr++;
		}

	} else if ($graph == "load_report") {
		$style = "Load";

		$lower_limit = "--lower-limit 0 --rigid";
		$vertical_label = "--vertical-label 'Load/Procs'";

		$def_nr = 0;

		foreach( $rrd_dirs as $rrd_dir ) {

			if( $def_nr == 0 ) {

				$load_str = ":'1-min Load'";
				$cpu_str = ":'CPUs'";
				$run_str = ":'Running Processes'";
			} else {
				$load_str = "";
				$cpu_str = "";
				$run_str = "";
			}

			$series .= "DEF:'load_one${def_nr}'='${rrd_dir}/load_one.rrd':'sum':AVERAGE "
				."DEF:'proc_run${def_nr}'='${rrd_dir}/proc_run.rrd':'sum':AVERAGE "
				."DEF:'cpu_num${def_nr}'='${rrd_dir}/cpu_num.rrd':'sum':AVERAGE ";
			$series .="AREA:'load_one${def_nr}'#${load_one_color}${load_str} ";
			$series .="LINE2:'cpu_num${def_nr}'#${cpu_num_color}${cpu_str} ";
			$series .="LINE2:'proc_run${def_nr}'#${proc_run_color}${run_str} ";

			$def_nr++;
		}

	} else if ($graph == "network_report") {
		$style = "Network";

		$lower_limit = "--lower-limit 0 --rigid";
		$extras = "--base 1024";
		$vertical_label = "--vertical-label 'Bytes/sec'";

		$def_nr = 0;

		foreach( $rrd_dirs as $rrd_dir ) {

			if( $def_nr == 0 ) {

				$in_str = ":'In'";
				$out_str = ":'Out'";
			} else {

				$in_str = "";
				$out_str = "";
			}

			$series .= "DEF:'bytes_in${def_nr}'='${rrd_dir}/bytes_in.rrd':'sum':AVERAGE "
				."DEF:'bytes_out${def_nr}'='${rrd_dir}/bytes_out.rrd':'sum':AVERAGE "
				."LINE2:'bytes_in${def_nr}'#${mem_cached_color}${in_str} "
				."LINE2:'bytes_out${def_nr}'#${mem_used_color}${out_str} ";

			$def_nr++;
		}

	} else if ($graph == "packet_report") {
		$style = "Packets";

		$lower_limit = "--lower-limit 0 --rigid";
		$extras = "--base 1024";
		$vertical_label = "--vertical-label 'Packets/sec'";

		$def_nr = 0;

		foreach( $rrd_dirs as $rrd_dir ) {

			if( $def_nr == 0 ) {

				$in_str = ":'In'";
				$out_str = ":'Out'";
			} else {

				$in_str = "";
				$out_str = "";
			}

			$series .= "DEF:'bytes_in${def_nr}'='${rrd_dir}/pkts_in.rrd':'sum':AVERAGE "
				."DEF:'bytes_out${def_nr}'='${rrd_dir}/pkts_out.rrd':'sum':AVERAGE "
				."LINE2:'bytes_in${def_nr}'#${mem_cached_color}${in_str} "
				."LINE2:'bytes_out${def_nr}'#${mem_used_color}${out_str} ";

			$def_nr++;
		}

	} else {
		/* Custom graph */
		$style = "";

		$subtitle = $metricname;
		if ($context == "host") {
			if ($size == "small")
				$prefix = $metricname;
			else
				$prefix = $hostname;

			$value = $value>1000 ? number_format($value) : number_format($value, 2);
		}

		//if ($range=="job") {
		//	$hrs = intval( -$jobrange / 3600 );
		//	$subtitle = "$prefix last ${hrs}h (now $value)";
		//} else
		//	$subtitle = "$prefix last $range (now $value)";

		if (is_numeric($max))
			$upper_limit = "--upper-limit '$max' ";
		if (is_numeric($min))
			$lower_limit ="--lower-limit '$min' ";

		if ($vlabel)
			$vertical_label = "--vertical-label '$vlabel'";
		else {
			if ($upper_limit or $lower_limit) {
				$max = $max>1000 ? number_format($max) : number_format($max, 2);
				$min = $min>0 ? number_format($min,2) : $min;

				$vertical_label ="--vertical-label '$min - $max' ";
			}
		}

		$def_nr = 0;

		foreach( $rrd_dirs as $rrd_dir ) {

			if( $def_nr == 0 ) {
				$title_str = ":'${subtitle}'";
			} else {
				$title_str = "";
			}

			$rrd_file = "$rrd_dir/$metricname.rrd";
			$series .= "DEF:'sum${def_nr}'='$rrd_file':'sum':AVERAGE "
				."AREA:'sum${def_nr}'#${default_metric_color}${title_str} ";

			$def_nr++;
		}

	}
	if( $series != '' ) {
		if ($job_start)
			$series .= "VRULE:${job_start}#${jobstart_color} ";
		if ($job_stop)
			$series .= "VRULE:${job_stop}#${jobstart_color} ";
	}
}

//$title = "$hostname $style $metricname";
$title = "$hostname";

//# Set the graph title.
//if($context == "meta") {
//	$title = "$self $meta_designator $style last $range";
//} else if ($context == "grid") {
//	$title = "$grid $meta_designator $style last $range";
//} else if ($context == "cluster") {
//	$title = "$clustername $style last $range";
//} else {
//	if ($size == "small") {
//		# Value for this graph define a background color.
//		if (!$load_color) $load_color = "ffffff";
//			$background = "--color BACK#'$load_color'";

//		$title = $hostname;
//	} else {
//		if ($style)
//			$title = "$hostname $style last $range";
//		else
//			$title = $metricname;
//	}
//}

function determineXGrid( $p_start, $p_stop ) {

	$period = intval( $p_stop - $p_start );

	// Syntax: <minor_grid_lines_time_declr>:<major_grid_lines_time_declr>:<labels_time_declr>:<offset>:<format>
	//
	// Where each <*time_declr*> = <time_type>:<time_interval>

	//$my_lines1 = intval( $period / 3.0 );
	//$my_lines2 = intval( $period / 6.0 );

	//$my_grid = "SECOND:$my_lines2:SECOND:$my_lines1:SECOND:$my_lines1:0:%R";

	//return "--x-grid $my_grid";

	// Less than 1 minute
	if( $period < 60 ) {

		$tm_formt = "%X";
		$my_grid = "SECOND:15:SECOND:30:SECOND:30:0:$tm_formt";

	// Less than 10 minutes
	} else if( $period < 600 ) {

		$tm_formt = "%R";
		$my_grid = "MINUTE:1:MINUTE:3:MINUTE:3:0:$tm_formt";

	// Less than 1 hour
	} else if( $period < 3600 ) {

		$tm_formt = "%R";
		$my_grid = "MINUTE:5:MINUTE:15:MINUTE:15:0:$tm_formt";

	// Less than 15 hour
	} else if( $period < 3600 ) {

		$tm_formt = "%R";
		$my_grid = "HOUR:1:HOUR:2:HOUR:2:0:$tm_formt";

	// Less than 1 day
	//
	} else if( $period < 86400 ) {

		$tm_formt = "%R";
		$my_grid = "HOUR:2:HOUR:5:HOUR:5:0:$tm_formt";

	// Less than 15 days
	//
	} else if( $period < 1296000 ) {

		$tm_formt = "%e-%m";
		$my_grid = "HOUR:1:DAY:3:DAY:3:0:'$tm_formt'";
		
	// Less than 30 days (a month)
	//
	} else if( $period < 2592000 ) {

		$tm_formt = "%e-%m";
		$my_grid = "DAY:5:DAY:10:DAY:10:0:'$tm_formt'";
	}

	if( isset( $my_grid ) ) {

		$ret_str = "--x-grid $my_grid";
		return array($ret_str,$tm_formt);

	} else {
		return array( "", "" );
	}
}

#list( $xgrid, $t_format ) = determineXGrid( $period_start, $period_stop );

#if( $t_format != "" ) {
#	$prnt_start = strftime( $t_format, $period_start );
#	$prnt_stop = strftime( $t_format, $period_stop );
#	$series .= " COMMENT:'     Timescale $prnt_start - $prnt_stop' ";
#}


#
# Generate the rrdtool graph command.
#
#$command = RRDTOOL . " graph - --start $period_start --end $period_stop ".
#	"--width $width --height $height $upper_limit $lower_limit ".
#	"--title '$title' $vertical_label $extras $background $xgrid ".
#	$series;
$command = RRDTOOL . " graph - --start $period_start --end $period_stop ".
	"--width $width --height $height ".
	"--title '$title' $extras $background ".
	$series;

$debug=0;

# Did we generate a command?   Run it.
if($command) {
	/*Make sure the image is not cached*/
	header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT");   // Date in the past
	header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
	header ("Cache-Control: no-cache, must-revalidate");   // HTTP/1.1
	header ("Pragma: no-cache");                     // HTTP/1.0
	if ($debug) {
		header ("Content-type: text/html");
		print "$command\n\n\n\n\n";
	} else {
		header ("Content-type: image/gif");
		passthru($command);
	}
}
?>