2 // ************ RRD status class **************
7 var $config_raw = null;
8 var $config_graph = null;
9 var $config_page = null;
11 var $rrd_fields = array();
12 var $rra_base = array();
14 var $rra_add_max = true;
16 var $status = 'unused';
18 function rrdstat($init_info = null) {
19 // ***** init RRD stat module *****
20 $this->set_def($init_info);
22 if (!is_null($this->rrd_file)) {
23 if (!is_writeable($this->rrd_file)) {
24 if (!file_exists($this->rrd_file)) {
25 if (touch($this->rrd_file)) { $this->create(); }
26 else { trigger_error('RRD file can not be created', E_USER_WARNING); }
29 if (is_readable($this->rrd_file)) { $this->status = 'readonly'; }
30 else { trigger_error('RRD file is not readable', E_USER_WARNING); }
39 function set_def($init_info = null) {
40 if (is_array($init_info) && isset($init_info['file'])) {
41 // we have an array in the format we like to have
45 // we have something else (XML data?), try to generate the iinfo aray from it
49 if (!isset($iinfo['file'])) { return false; }
51 $this->rrd_file = $iinfo['file'];
53 // fields (data sources, DS)
55 // type - one of COUNTER, GAUGE, DERIVE, ABSOLUTE
56 // heartbeat - if no sample recieved for that time, store UNKNOWN
57 // min - U (unconstrained) or minimum value
58 // max - U (unconstrained) or maximum value
59 // update - this string will be fed into eval() for updating this field
60 if (isset($iinfo['fields']) && is_array($iinfo['fields'])) {
61 $this->rrd_fields = $iinfo['fields'];
64 $this->rrd_fields[] = array('name' => 'ds0', 'type' => 'COUNTER', 'heartbeat' => 600, 'min' => 'U', 'max' => 'U');
65 $this->rrd_fields[] = array('name' => 'ds1', 'type' => 'COUNTER', 'heartbeat' => 600, 'min' => 'U', 'max' => 'U');
69 // MRTG-style RRD "database", see http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/tut/rrdtutorial.en.html
72 // 600 samples of 5 minutes (2 days and 2 hours)
73 // 700 samples of 30 minutes (2 days and 2 hours, plus 12.5 days)
74 // 775 samples of 2 hours (above + 50 days)
75 // 797 samples of 1 day (above + 732 days, rounded up to 797)
77 $this->rrd_step = isset($iinfo['rrd_step'])?$iinfo['rrd_step']:300;
79 if (isset($iinfo['rra_base']) && is_array($iinfo['rra_base'])) {
80 $this->rra_base = $iinfo['rra_base'];
83 $this->rra_base[] = array('step' => 1, 'rows' => 600);
84 $this->rra_base[] = array('step' => 6, 'rows' => 700);
85 $this->rra_base[] = array('step' => 24, 'rows' => 775);
86 $this->rra_base[] = array('step' => 288, 'rows' => 797);
89 $this->rra_add_max = isset($iinfo['rra_add_max'])?$iinfo['rra_add_max']:true;
91 if (isset($iinfo['graph'])) { $this->config_graph = $iinfo['graph']; }
92 if (isset($iinfo['page'])) { $this->config_page = $iinfo['page']; }
93 $this->config_raw = $iinfo;
99 // compose create command
100 $create_cmd = 'rrdtool create '.$this->rrd_file.' --step '.$this->rrd_step;
101 foreach ($this->rrd_fields as $ds) {
102 if (!isset($ds['type'])) { $ds['type'] = 'COUNTER'; }
103 if (!isset($ds['heartbeat'])) { $ds['heartbeat'] = 2*$this->rrd_step; }
104 if (!isset($ds['min'])) { $ds['min'] = 'U'; }
105 if (!isset($ds['max'])) { $ds['max'] = 'U'; }
106 $create_cmd .= ' DS:'.$ds['name'].':'.$ds['type'].':'.$ds['heartbeat'].':'.$ds['min'].':'.$ds['max'];
108 foreach ($this->rra_base as $rra) {
109 if (!isset($rra['cf'])) { $rra['cf'] = 'AVERAGE'; }
110 if (!isset($rra['xff'])) { $rra['xff'] = 0.5; }
111 if (!isset($rra['step'])) { $rra['step'] = 1; }
112 if (!isset($rra['rows'])) { $rra['rows'] = 600; }
113 $create_cmd .= ' RRA:'.$rra['cf'].':'.$rra['xff'].':'.$rra['step'].':'.$rra['rows'];
115 if ($this->rra_add_max) {
116 foreach ($this->rra_base as $rra) {
117 if (!isset($rra['cf'])) {
118 // only rows that have no CF set will be looked at here
120 if (!isset($rra['xff'])) { $rra['xff'] = 0.5; }
121 if (!isset($rra['step'])) { $rra['step'] = 1; }
122 if (!isset($rra['rows'])) { $rra['rows'] = 600; }
123 $create_cmd .= ' RRA:'.$rra['cf'].':'.$rra['xff'].':'.$rra['step'].':'.$rra['rows'];
127 $output = array(); $return_var = null;
128 exec($create_cmd, $output, $return_var);
129 if ($return_var) { trigger_error('rrd create returned with value '.$return_var, E_USER_WARNING); }
130 else { $this->status = 'ok'; }
133 function update($upArray = null) {
134 // feed new data into RRD
135 if ($this->status != 'ok') { trigger_error('Cannot update non-writeable file', E_USER_WARNING); return 1; }
137 foreach($this->rrd_fields as $ds) {
138 if (is_array($upArray) && isset($upArray[$ds['name']])) { $val = $upArray[$ds['name']]; }
139 elseif (isset($ds['update'])) { $val = eval($ds['update']); }
140 else { $val = null; }
143 $update_cmd = 'rrdtool update '.$this->rrd_file.' N:'.implode(':', $upvals);
144 $output = array(); $return_var = null;
145 exec($update_cmd, $output, $return_var);
146 if ($return_var) { trigger_error('rrd update returned with value '.$return_var, E_USER_WARNING); }
147 return ($return_var == 0);
150 function fetch($cf = 'AVERAGE', $resolution = null, $start = null, $end = null) {
151 // fetch data from a RRD
152 if (!in_array($this->status, array('ok','readonly'))) { trigger_error('Error: rrd status is '.$this->status, E_USER_WARNING); return false; }
154 if (!in_array($cf, array('AVERAGE','MIN','MAX','LAST'))) { $cf = 'AVERAGE'; }
155 if (!is_numeric($resolution)) { $resolution = $this->rrd_step; }
156 if (!is_numeric($end)) { $end = $this->last_update(); }
157 elseif ($end < 0) { $end += $this->last_update(); }
158 $end = intval($end/$resolution)*$resolution;
159 if (!is_numeric($start)) { $start = $end; }
160 elseif ($start < 0) { $start += $end; }
161 $start = intval($start/$resolution)*$resolution;
163 $fetch_cmd = 'rrdtool fetch '.$this->rrd_file.' '.$cf.' --resolution '.$resolution.' --start '.$start.' --end '.$end;
164 $return = `$fetch_cmd 2>&1`;
166 if (strpos($return, 'ERROR') !== false) {
167 trigger_error('rrd fetch error: '.$return, E_USER_WARNING);
172 $rows = explode("\n", $return);
173 $fields = preg_split('/\s+/', array_shift($rows));
174 if (array_shift($fields) == 'timestamp') {
175 $fresult[0] = $fields;
176 foreach ($rows as $row) {
177 if (strlen(trim($row))) {
178 $rvals = preg_split('/\s+/', $row);
179 $rtime = array_shift($rvals);
181 foreach ($rvals as $key=>$rval) {
182 $rv_array[$fields[$key]] = ($rval=='nan')?null:floatval($rval);
184 $fresult[$rtime] = $rv_array;
192 function graph($timeframe = 'day', $sub = null, $extra = null) {
193 // create a RRD graph
195 if (!isset($gColors)) {
196 $gColors = array('#00CC00','#0000FF','#000000','#FF0000','#00FF00','#FFFF00','#FF00FF','#00FFFF','#808080','#800000','#008000','#000080','#808000','#800080','#008080','#C0C0C0');
199 if (!in_array($this->status, array('ok','readonly'))) { trigger_error('Error: rrd status is '.$this->status, E_USER_WARNING); return false; }
201 // assemble configuration
202 $gconf = $this->config_graph;
203 if (!is_null($sub) && is_array($this->config_raw['graph.'.$sub])) {
204 if (is_array($gconf)) { $gconf = array_merge($gconf, $this->config_raw['graph.'.$sub]); }
205 else { $gconf = $this->config_raw['graph.'.$sub]; }
207 if (is_array($extra)) {
208 if (is_array($gconf)) { $gconf = array_merge($gconf, $extra); }
209 else { $gconf = $extra; }
212 if (isset($gconf['format']) && ($gconf['format'] == 'SVG')) {
213 $format = $gconf['format']; $fmt_ext = '.svg';
215 elseif (isset($gconf['format']) && ($gconf['format'] == 'EPS')) {
216 $format = $gconf['format']; $fmt_ext = '.eps';
218 elseif (isset($gconf['format']) && ($gconf['format'] == 'PDF')) {
219 $format = $gconf['format']; $fmt_ext = '.pdf';
222 $format = 'PNG'; $fmt_ext = '.png';
225 if (isset($gconf['filename'])) { $fname = $gconf['filename']; }
226 else { $fname = str_replace('.rrd', (is_null($sub)?'':'-%s').'-%t%f', $this->rrd_file); }
227 $fname = str_replace('%s', strval($sub), $fname);
228 $fname = str_replace('%t', $timeframe, $fname);
229 $fname = str_replace('%f', $fmt_ext, $fname);
230 if (substr($fname, -strlen($fmt_ext)) != $fmt_ext) { $fname .= $fmt_ext; }
232 $graphrows = array(); $gC = 0;
233 $gDefs = ''; $gGraphs = ''; $addSpecial = '';
235 if ($timeframe == 'day') {
236 $duration = isset($gconf['duration'])?$gconf['duration']:30*3600; // 30 hours
237 $slice = isset($gconf['slice'])?$gconf['slice']:300; // 5 minutes
238 // vertical lines at day borders
239 $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d')).'#FF0000';
240 $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' -1 day').'#FF0000';
241 if (!isset($gconf['grid_x'])) { $gconf['grid_x'] = 'HOUR:1:HOUR:6:HOUR:2:0:%-H'; }
243 elseif ($timeframe == 'week') {
244 $duration = isset($gconf['duration'])?$gconf['duration']:8*86400; // 8 days
245 $slice = isset($gconf['slice'])?$gconf['slice']:1800; // 30 minutes
246 // vertical lines at week borders
247 $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' '.(-date('w')+1).' day').'#FF0000';
248 $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' '.(-date('w')-6).' day').'#FF0000';
250 elseif ($timeframe == 'month') {
251 $duration = isset($gconf['duration'])?$gconf['duration']:36*86400; // 36 days
252 $slice = isset($gconf['slice'])?$gconf['slice']:7200; // 2 hours
253 // vertical lines at month borders
254 $addSpecial .= ' VRULE:'.strtotime(date('Y-m-01')).'#FF0000';
255 $addSpecial .= ' VRULE:'.strtotime(date('Y-m-01').' -1 month').'#FF0000';
257 elseif ($timeframe == 'year') {
258 $duration = isset($gconf['duration'])?$gconf['duration']:396*86400; // 365+31 days
259 $slice = isset($gconf['slice'])?$gconf['slice']:86400; // 1 day
260 // vertical lines at month borders
261 $addSpecial .= ' VRULE:'.strtotime(date('Y-01-01')).'#FF0000';
262 $addSpecial .= ' VRULE:'.strtotime(date('Y-01-01').' -1 year').'#FF0000';
265 $duration = isset($gconf['duration'])?$gconf['duration']:$this->rrd_step*500; // 500 steps
266 $slice = isset($gconf['slice'])?$gconf['slice']:$this->rrd_step; // whatever our step is
269 if (isset($gconf['rows']) && count($gconf['rows'])) {
270 foreach ($gconf['rows'] as $erow) {
271 if (isset($erow['name']) && strlen($erow['name'])) {
272 if (!isset($erow['scale']) && isset($gconf['scale'])) { $erow['scale'] = $gconf['scale']; }
274 $grow['dType'] = isset($erow['dType'])?$erow['dType']:'DEF';
275 $grow['name'] = $erow['name'].(isset($erow['scale'])?'_tmp':'');
276 if ($grow['dType'] == 'DEF') {
277 $grow['dsname'] = isset($erow['dsname'])?$erow['dsname']:$erow['name'];
278 $grow['cf'] = isset($erow['cf'])?$erow['cf']:'AVERAGE';
281 $grow['rpn_expr'] = isset($erow['rpn_expr'])?$erow['rpn_expr']:'0';
283 if (isset($erow['scale'])) {
284 $graphrows[] = $grow;
286 $grow['dType'] = 'CDEF';
287 $grow['name'] = $erow['name'];
288 $grow['rpn_expr'] = $erow['name'].'_tmp,'.$erow['scale'].',*';
290 $grow['gType'] = isset($erow['gType'])?$erow['gType']:'LINE1';
291 $grow['color'] = isset($erow['color'])?$erow['color']:$gColors[$gC++];
292 if ($gC >= count($gColors)) { $gC = 0; }
293 if (isset($erow['legend'])) {
294 $grow['legend'] = $erow['legend'];
295 if (!isset($gconf['show_legend'])) { $gconf['show_legend'] = true; }
297 if (isset($erow['stack'])) { $grow['stack'] = ($erow['stack'] == true); }
298 $graphrows[] = $grow;
303 foreach ($this->rrd_fields as $ds) {
305 $grow['dType'] = 'DEF';
306 $grow['name'] = $ds['name'].(isset($gconf['scale'])?'_tmp':'');
307 $grow['dsname'] = $ds['name'];
308 $grow['cf'] = 'AVERAGE';
309 if (isset($gconf['scale'])) {
310 $graphrows[] = $grow;
312 $grow['dType'] = 'CDEF';
313 $grow['name'] = $ds['name'];
314 $grow['rpn_expr'] = $ds['name'].'_tmp,'.$gconf['scale'].',*';
316 $grow['gType'] = ($ds['name']=='ds0')?'AREA':'LINE1';
317 $grow['color'] = $gColors[$gC++]; if ($gC >= count($gColors)) { $gC = 0; }
318 $graphrows[] = $grow;
322 if (isset($gconf['special']) && count($gconf['special'])) {
323 foreach ($gconf['special'] as $crow) {
325 $srow['sType'] = isset($crow['sType'])?$crow['sType']:'COMMENT';
326 if ($grow['sType'] != 'COMMENT') {
327 // XXX: use line below and remove cf var once we have rrdtol 1.2
328 // $srow['name'] = $crow['name'].(isset($crow['cf'])?'_'.$crow['cf']:'');
329 $srow['name'] = $crow['name'];
330 $srow['cf'] = isset($crow['cf'])?$crow['cf']:'AVERAGE';
331 if (isset($crow['cf'])) {
332 // XXX: use line below once we have rrdtol 1.2
333 // $graphrows[] = array('dType'=>'VDEF', 'name'=>$srow['name'].'_'.$crow['cf'], 'rpn_expr'=>$srow['name'].','.$crow['cf']);
335 elseif (isset($crow['rpn_expr'])) {
336 // XXX: does only work with rrdtool 1.2
337 $graphrows[] = array('dType'=>'VDEF', 'name'=>$srow['name'], 'rpn_expr'=>$crow['rpn_expr']);
340 $srow['text'] = isset($crow['text'])?$crow['text']:'';
341 $specialrows[] = $srow;
345 foreach ($graphrows as $grow) {
346 if (isset($grow['gType']) && strlen($grow['gType'])) {
347 $textprefix = isset($grow['legend'])?$grow['legend']:$grow['name'];
348 // XXX: use lines below once we have rrdtol 1.2
349 // $graphrows[] = array('dType'=>'VDEF', 'name'=>$grow['name'].'_last', 'rpn_expr'=>$grow['name'].',LAST');
350 // $specialrows[] = array('sType'=>'PRINT', 'name'=>$grow['name'].'_last', 'text'=>'%3.2lf%s');
351 $specialrows[] = array('sType'=>'PRINT', 'name'=>$grow['name'], 'cf'=>'MAX', 'text'=>$textprefix.'|Maximum|%.2lf%s');
352 $specialrows[] = array('sType'=>'PRINT', 'name'=>$grow['name'], 'cf'=>'AVERAGE', 'text'=>$textprefix.'|Average|%.2lf%s');
353 $specialrows[] = array('sType'=>'PRINT', 'name'=>$grow['name'], 'cf'=>'LAST', 'text'=>$textprefix.'|Current|%.2lf%s');
358 $endtime = isset($gconf['time_end'])?$gconf['time_end']:(is_numeric($this->last_update())?$this->last_update():time());
359 $gOpts = ' --start '.($endtime-$duration).' --end '.$endtime.' --step '.$slice;
360 if (isset($gconf['label_top'])) { $gOpts .= ' --title '.$this->text_quote($gconf['label_top']); }
361 if (isset($gconf['label_y'])) { $gOpts .= ' --vertical-label '.$this->text_quote($gconf['label_y']); }
362 if (isset($gconf['width'])) { $gOpts .= ' --width '.$gconf['width']; }
363 if (isset($gconf['height'])) { $gOpts .= ' --height '.$gconf['height'];
364 if (($gconf['height'] <= 32) && isset($gconf['thumb']) && ($gconf['thumb'])) { $gOpts .= ' --only-graph'; }
366 if (!isset($gconf['show_legend']) || (!$gconf['show_legend'])) { $gOpts .= ' --no-legend'; }
367 if (isset($gconf['min_y'])) { $gOpts .= ' --lower-limit '.$gconf['min_y']; }
368 if (isset($gconf['max_y'])) { $gOpts .= ' --upper-limit '.$gconf['max_y']; }
369 if (isset($gconf['fix_scale_y']) && $gconf['fix_scale_y']) { $gOpts .= ' --rigid'; }
370 if (isset($gconf['grid_x'])) { $gOpts .= ' --x-grid '.$gconf['grid_x']; }
371 if (isset($gconf['grid_y'])) { $gOpts .= ' --y-grid '.$gconf['grid_y']; }
372 if (isset($gconf['units_exponent'])) { $gOpts .= ' --units-exponent '.$gconf['units_exponent']; }
373 if (isset($gconf['units_length'])) { $gOpts .= ' --units-length '.$gconf['units_length']; }
374 if (!isset($gconf['force_recreate']) || (!$gconf['force_recreate'])) { $gOpts .= ' --lazy'; }
375 if (isset($gconf['force_color']) && is_array($gconf['force_color'])) {
376 foreach ($gconf['force_color'] as $ctag=>$cval) { $gOpts .= ' --color '.$ctag.$cval; }
378 if (isset($gconf['force_font']) && is_array($gconf['force_font'])) {
379 foreach ($gconf['force_font'] as $ctag=>$cval) { $gOpts .= ' --font '.$ctag.$cval; }
381 if (isset($gconf['units_binary']) && $gconf['units_binary']) { $gOpts .= ' --base 1024'; }
383 foreach ($graphrows as $grow) {
384 if (isset($grow['dType']) && strlen($grow['dType'])) {
385 $gDefs .= ' '.$grow['dType'].':'.$grow['name'].'=';
386 $gDefs .= ($grow['dType']=='DEF')?$this->rrd_file.':'.$grow['dsname'].':'.$grow['cf']:$grow['rpn_expr'];
388 if (isset($grow['gType']) && strlen($grow['gType'])) {
389 // XXX: change from STACK type to STACK flag once we have rrdtool 1.2
390 if (isset($grow['stack']) && $grow['stack']) { $grow['gType'] = 'STACK'; }
391 $gGraphs .= ' '.$grow['gType'].':'.$grow['name'].$grow['color'];
392 if (isset($grow['legend'])) { $gGraphs .= ':'.$this->text_quote($grow['legend']); }
393 // XXX: remove above STACK if-command and uncomment the one below once we have rrdtool 1.2
394 //if (isset($grow['stack']) && $grow['stack']) { $gGraphs .= ':STACK'; }
398 foreach ($specialrows as $srow) {
399 $addSpecial .= ' '.$srow['sType'];
400 // XXX: eliminate cf once we have rrdtool 1.2
401 // $addSpecial .= ($grow['sType']!='COMMENT')?':'.$grow['name']:'');
402 $addSpecial .= (($srow['sType']!='COMMENT')?':'.$srow['name'].':'.$srow['cf']:'');
403 $addSpecial .= ':'.$this->text_quote($srow['text']);
406 $graph_cmd = 'rrdtool graph '.str_replace('*', '\*', $fname.$gOpts.$gDefs.$gGraphs.$addSpecial);
407 $return = `$graph_cmd 2>&1`;
409 if (strpos($return, 'ERROR') !== false) {
410 trigger_error('rrd graph error: '.$return, E_USER_WARNING);
411 $return = $graph_cmd."\n\n".$return;
416 function simple_html($sub = null, $page_extras = null, $graph_extras = null) {
417 // create a simple (MRTG-like) HTML page and return it in a string
418 $basename = str_replace('.rrd', '', $this->rrd_file);
420 // assemble configuration
421 $pconf = $this->config_page;
422 if (!is_null($sub) && is_array($this->config_raw['page.'.$sub])) {
423 if (is_array($pconf)) { $gconf = array_merge($pconf, $this->config_raw['page.'.$sub]); }
424 else { $pconf = $this->config_raw['page.'.$sub]; }
426 if (is_array($page_extras)) {
427 if (is_array($pconf)) { $pconf = array_merge($pconf, $page_extras); }
428 else { $pconf = $page_extras; }
431 $ptitle = isset($pconf['title_page'])?$pconf['title_page']:$basename.' - RRD statistics';
433 $gtitle['day'] = isset($pconf['title_day'])?$pconf['title_day']:'Day overview (scaling 5 minutes)';
434 $gtitle['week'] = isset($pconf['title_week'])?$pconf['title_week']:'Week overview (scaling 30 minutes)';
435 $gtitle['month'] = isset($pconf['title_month'])?$pconf['title_month']:'Month overview (scaling 2 hours)';
436 $gtitle['year'] = isset($pconf['title_year'])?$pconf['title_year']:'Year overview (scaling 1 day)';
438 $out = '<html><head>';
439 $out .= '<title>'.$ptitle.'</title>';
441 if (isset($pconf['style_base'])) { $out .= $pconf['style_base']; }
443 $out .= 'h1 { font-weight: bold; font-size: 1.5em; }';
444 $out .= 'h2 { font-weight: bold; font-size: 1em; }';
445 $out .= '.gdata, .gvar, .ginfo { font-size: 0.75em; margin: 0.5em 0; }';
446 $out .= 'table.gdata { border: 1px solid gray; border-collapse: collapse; }';
447 $out .= 'table.gdata td, table.gdata th { border: 1px solid gray; padding: 0.1em 0.2em; }';
449 if (isset($pconf['style'])) { $out .= $pconf['style']; }
454 $out .= '<h1>'.$ptitle.'</h1>';
455 if (!isset($pconf['show_update']) || $pconf['show_update']) {
456 $out .= '<p class="last_up">Last Update: '.date('Y-m-d H:i:s', $this->last_update()).'</p>';
459 if (in_array($this->status, array('ok','readonly'))) {
460 $g_sub = isset($pconf['graph_sub'])?$pconf['graph_sub']:null;
461 foreach (array('day','week','month','year') as $tframe) {
462 $ret = $this->graph($tframe, $g_sub, $graph_extras);
463 if (strpos($ret, "\n\n") !== false) { $graph_cmd = substr($ret, 0, strpos($ret, "\n\n")); $ret = substr($ret, strpos($ret, "\n\n")+2); }
464 else { $graph_cmd = null; }
465 $grout = explode("\n",$ret);
467 foreach ($grout as $gline) {
468 if (preg_match('/^(\d+)x(\d+)$/', $gline, $regs)) {
469 $gmeta['width'] = $regs[1]; $gmeta['height'] = $regs[2];
471 elseif (preg_match('/^([^\|]+)\|([^|]+)\|([^\|]*)$/', $gline, $regs)) {
472 $gmeta['data'][$regs[1]][$regs[2]] = $regs[3];
474 elseif (preg_match('/^([^\|]+)\|([^\|]*)$/', $gline, $regs)) {
475 $gmeta['var'][$regs[1]] = $regs[2];
477 elseif (strlen(trim($gline))) {
478 $gmeta['info'][] = $gline;
481 $out .= '<div class="'.$tframe.'">';
482 // $out .= '<p>'.nl2br($ret).'</p>';
483 $out .= '<h2>'.$gtitle[$tframe].'</h2>';
484 $out .= '<img src="'.$basename.(!is_null($g_sub)?'-'.$g_sub:'').'-'.$tframe.'.png"';
485 $out .= ' alt="'.$basename.(!is_null($g_sub)?' - '.$g_sub:'').' - '.$tframe.'" class="rrdgraph"';
486 $out .= ' style="width:'.$gmeta['width'].'px;height:'.$gmeta['height'].'px;">';
487 if (isset($gmeta['data']) && count($gmeta['data'])) {
488 $out .= '<table class="gdata">';
489 foreach ($gmeta['data'] as $field=>$gdata) {
490 $out .= '<tr><th>'.$field.'</th>';
491 foreach ($gdata as $gkey=>$gval) {
492 $out .= '<td><span class="gkey">'.$gkey.': </span>'.$gval.'</td>';
498 if (isset($gmeta['var']) && count($gmeta['var'])) {
499 foreach ($gmeta['var'] as $gkey=>$gval) {
500 $out .= '<p class="gvar"><span class="gkey">'.$gkey.': </span>'.$gval.'</p>';
503 if (isset($gmeta['info']) && count($gmeta['info'])) {
504 foreach ($gmeta['info'] as $gval) {
505 $out .= '<p class="ginfo">'.$gval.'</p>';
511 $out .= 'RRD error: status is "'.$this->status.'"';
515 $out .= '</body></html>';
519 function last_update() {
520 // fetch time of last update in this RRD file
522 if (!isset($last_update) && in_array($this->status, array('ok','readonly'))) {
523 $last_cmd = 'rrdtool last '.$this->rrd_file;
524 $return = trim(`$last_cmd 2>&1`);
525 $last_update = is_numeric($return)?$return:null;
527 return isset($last_update)?$last_update:null;
530 function text_quote($text) { return '"'.str_replace('"', '\"', str_replace(':', '\:', $text)).'"'; }