231 lines
7.4 KiB
PHP
231 lines
7.4 KiB
PHP
<?php
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/**
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* Observium
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*
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* This file is part of Observium.
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*
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* @package observium
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* @subpackage graphs
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* @copyright (C) 2006-2013 Adam Armstrong, (C) 2013-2023 Observium Limited
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*
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*/
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// DOCME needs phpdoc block
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function graph_from_definition($vars, $type, $subtype, $device)
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{
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global $config, $graph_defs;
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$graph_def = $graph_defs[$type][$subtype];
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include_once($config['html_dir'] . "/includes/graphs/common.inc.php");
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// Here we scale the number of numerical columns shown to make sure we keep the text.
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if ($width > 600) {
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$data_show = ['lst', 'avg', 'min', 'max', 'tot'];
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} elseif ($width > 400) {
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$data_show = ['lst', 'avg', 'max', 'tot'];
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} elseif ($width > 300) {
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$data_show = ['lst', 'avg', 'max', 'tot'];
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} else {
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$data_show = ['lst', 'avg', 'max'];
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}
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// Drop total from view if requested not to show
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if ($args['nototal'] || $nototal) {
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if (($key = array_search('tot', $data_show)) !== FALSE) {
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unset($data_show[$key]);
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}
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}
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$data_len = safe_count($data_show) * 8;
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// Here we scale the length of the description to make sure we keep the numbers
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if ($width > 600) {
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$descr_len = 40;
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} elseif ($width > 300) {
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$descr_len = floor(($width + 42) / 8) - $data_len;
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} else {
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$descr_len = floor(($width + 42) / 7) - $data_len;
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}
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// Build the legend headers using the length values previously calculated
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if (!isset($unit_text)) {
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if ($format == "octets" || $format == "bytes") {
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$units = "Bps";
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$format = "bytes";
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$unit_text = "Bytes/s";
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} else {
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$units = "bps";
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$format = "bits";
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$unit_text = "Bits/s";
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}
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}
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if ($legend != 'no') {
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$rrd_options .= " COMMENT:'" . rrdtool_escape($unit_text, $descr_len) . "'";
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if (in_array("lst", $data_show)) {
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$rrd_options .= " COMMENT:' Now'";
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}
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if (in_array("avg", $data_show)) {
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$rrd_options .= " COMMENT:' Avg'";
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}
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if (in_array("min", $data_show)) {
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$rrd_options .= " COMMENT:' Min'";
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}
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if (in_array("max", $data_show)) {
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$rrd_options .= " COMMENT:' Max'";
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}
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if (in_array("tot", $data_show)) {
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$rrd_options .= " COMMENT:' Total'";
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}
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$rrd_options .= " COMMENT:'\\l'";
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}
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foreach ($graph_def['ds'] as $ds_name => $ds) {
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if (!isset($ds['file'])) {
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$ds['file'] = $graph_def['file'];
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}
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if (!isset($ds['draw'])) {
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$ds['draw'] = "LINE1.5";
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}
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$ds['file'] = get_rrd_path($device, $ds['file']);
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$cmd_def .= " DEF:" . $ds_name . "=" . $ds['file'] . ":" . $ds_name . ":AVERAGE";
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$cmd_def .= " DEF:" . $ds_name . "_min=" . $ds['file'] . ":" . $ds_name . ":MIN";
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$cmd_def .= " DEF:" . $ds_name . "_max=" . $ds['file'] . ":" . $ds_name . ":MAX";
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if (!empty($ds['cdef'])) {
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$ds_name = $ds_name . "_c";
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$cmd_cdef .= " CDEF:" . $ds_name . "=" . $ds['cdef'] . "";
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$cmd_cdef .= " CDEF:" . $ds_name . "_min=" . $ds['cdef'] . "";
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$cmd_cdef .= " CDEF:" . $ds_name . "_max=" . $ds['cdef'] . "";
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}
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if ($ds['ds_graph'] != "yes") {
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if (empty($ds['colour'])) {
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if (!$config['graph_colours'][$graph_def['colours']][$c_i]) {
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$c_i = 0;
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}
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$colour = $config['graph_colours'][$graph_def['colours']][$c_i];
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$c_i++;
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} else {
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$colour = $ds['colour'];
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}
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$descr = rrdtool_escape($ds['label'], $descr_len);
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if ($ds['draw'] == "AREASTACK") {
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if ($i == 0) {
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$ds['ds_draw'] = "AREA";
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} else {
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$ds['ds_draw'] = "STACK";
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}
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} elseif (preg_match("/^LINESTACK([0-9\.]*)/", $ds['ds_draw'], $m)) {
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if ($i == 0) {
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$data['ds_draw'] = "LINE$m[1]";
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} else {
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$ds['draw'] = "STACK";
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}
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}
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$cmd_graph .= ' ' . $ds['draw'] . ':' . $ds_name . '#' . $colour . ':"' . $descr . '"';
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$cmd_graph .= ' GPRINT:' . $ds_name . ':LAST:"%6.2lf%s"';
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$cmd_graph .= ' GPRINT:' . $ds_name . ':AVERAGE:"%6.2lf%s"';
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$cmd_graph .= ' GPRINT:' . $ds_name . ':MAX:"%6.2lf%s\\n"';
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}
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}
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$rrd_options = $cmd_def . $cmd_cdef . $cmd_graph;
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return $rrd_options;
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}
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// DOCME needs phpdoc block
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function graph_error($string)
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{
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global $vars, $config, $graphfile;
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$vars['bg'] = "FFBBBB";
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include($config['html_dir'] . "/includes/graphs/common.inc.php");
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$rrd_options .= " HRULE:0#555555";
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$rrd_options .= " --title='" . escapeshellarg($string) . "'";
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$rrd_options = preg_replace('/ --(start|end)(\s+\d+)?/', '', $rrd_options); // Remove start/end from error graph
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if (FALSE && $height > 99) {
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rrdtool_graph($graphfile, $rrd_options);
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//$woo = shell_exec($rrd_cmd);
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//if (OBS_DEBUG) { echo("<pre>".$rrd_cmd."</pre>"); }
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if (is_file($graphfile)) {
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if (!OBS_DEBUG) {
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header('Content-type: image/png');
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header('Content-Length: ' . filesize($graphfile));
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header('Content-Disposition: inline; filename="' . basename($graphfile) . '"');
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$fd = fopen($graphfile, 'r');
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fpassthru($fd);
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fclose($fd);
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} else {
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echo('<img src="' . data_uri($graphfile, 'image/png') . '" alt="graph" />');
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}
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unlink($graphfile);
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# exit();
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}
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} else {
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if (!OBS_DEBUG) {
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$font = 2;
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$font_width = 6;
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$font_height = 12;
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if ($height >= 90) {
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$width = $width + 75; // RRD graphs are 75px wider than request value
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$height = $height + 37; // RRD graphs are taller than request value
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}
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if ($width > 350) {
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$width += 6;
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$height += 6;
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$font = 4;
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$font_width = 8;
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$font_height = 16;
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}
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$im = imagecreate($width, $height);
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imagecolorallocate($im, 255, 224, 224);
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if (str_contains($string, "OK")) {
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$string = "RRDTool seems to have generated an empty graph. \nPlease ensure that RRDs are being populated for this device.";
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}
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$lines = wrap_text($string, $width, $font_width);
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$line_count = count($lines);
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for ($i = 0; $i < $line_count; $i++) {
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$px = (imagesx($im) - $font_width * strlen($lines[$i])) / 2;
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$py = ($height - $font_height * $line_count) / 2 + $i * $font_height;
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imagestring($im, $font, $px, $py, $lines[$i], imagecolorallocate($im, 128, 0, 0));
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}
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header('Content-type: image/png');
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imagepng($im);
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imagedestroy($im);
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}
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# exit();
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}
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}
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function wrap_text($string, $width, $font_width)
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{
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$max_chars = floor($width / $font_width);
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$wrapped_text = wordwrap($string, $max_chars, "\n");
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return explode("\n", $wrapped_text);
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}
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// EOF
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