[php-utility-classes.git] / include / classes / rrdstat.php-class

<?php
// ************ RRD status class **************
class rrdstat {

  var $rrd_file = 'sample.rrd';

  var $rrd_fields = array();
  var $rra_base = array();
  var $rrd_step = 300;
  var $rra_add_max = true;

  var $status = 'unused';

  function rrdstat($init_info = null) {
    // ***** init RRD stat module *****
    $this->set_def($init_info);

    if (!is_writeable($this->rrd_file)) {
      if (!file_exists($this->rrd_file)) {
        if (touch($this->rrd_file)) { $this->create(); }
        else { trigger_error('RRD file can not be created', E_USER_WARNING); }
      }
      else {
        if (is_readable($this->rrd_file)) { $this->status = 'readonly'; }
        else { trigger_error('RRD file is not readable', E_USER_WARNING); }
      }
    }
    else {
      $this->status = 'ok';
    }
  }

  function set_def($init_info = null) {
    if (is_array($init_info) && isset($init_info['file'])) {
      // we have an array in the format we like to have
      $iinfo =& $init_info;
    }
    else {
      // we have something else (XML data?), try to generate the iinfo aray from it
      $iinfo =& $init_info;
    }

    if (!isset($iinfo['file'])) { return false; }

    $this->rrd_file = $iinfo['file'];

    // fields (data sources, DS)
    //  name - DS name
    //  type - one of COUNTER, GAUGE, DERIVE, ABSOLUTE
    //  heartbeat - if no sample recieved for that time, store UNKNOWN
    //  min - U (unconstrained) or minimum value
    //  max - U (unconstrained) or maximum value
    //  update - this string will be fed into eval() for updating this field
    if (isset($iinfo['fields']) && is_array($iinfo['fields'])) {
      $this->rrd_fields = $iinfo['fields'];
    }
    else {
      $this->rrd_fields[] = array('name' => 'ds0', 'type' => 'COUNTER', 'heartbeat' => 600, 'min' => 'U', 'max' => 'U');
      $this->rrd_fields[] = array('name' => 'ds1', 'type' => 'COUNTER', 'heartbeat' => 600, 'min' => 'U', 'max' => 'U');
    }


    // MRTG-style RRD "database", see http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/tut/rrdtutorial.en.html
    //
    // archives (RRAs):
    // 600 samples of 5 minutes  (2 days and 2 hours)
    // 700 samples of 30 minutes (2 days and 2 hours, plus 12.5 days)
    // 775 samples of 2 hours    (above + 50 days)
    // 797 samples of 1 day      (above + 732 days, rounded up to 797)

    $this->rrd_step = isset($iinfo['rrd_step'])?$iinfo['rrd_step']:300;

    if (isset($iinfo['rra_base']) && is_array($iinfo['rra_base'])) {
      $this->rra_base = $iinfo['rra_base'];
    }
    else {
      $this->rra_base[] = array('step' => 1, 'rows' => 600);
      $this->rra_base[] = array('step' => 6, 'rows' => 700);
      $this->rra_base[] = array('step' => 24, 'rows' => 775);
      $this->rra_base[] = array('step' => 288, 'rows' => 797);
    }

    $this->rra_add_max = isset($iinfo['rra_add_max'])?$iinfo['rra_add_max']:true;
  }

  function create() {
    // create RRD file

    // compose create command
    $create_cmd = 'rrdtool create '.$this->rrd_file.' --step '.$this->rrd_step;
    foreach ($this->rrd_fields as $ds) {
      if (!isset($ds['type'])) { $ds['type'] = 'COUNTER'; }
      if (!isset($ds['heartbeat'])) { $ds['heartbeat'] = 2*$this->rrd_step; }
      if (!isset($ds['min'])) { $ds['min'] = 'U'; }
      if (!isset($ds['max'])) { $ds['max'] = 'U'; }
      $create_cmd .= ' DS:'.$ds['name'].':'.$ds['type'].':'.$ds['heartbeat'].':'.$ds['min'].':'.$ds['max'];
    }
    foreach ($this->rra_base as $rra) {
      if (!isset($rra['cf'])) { $rra['cf'] = 'AVERAGE'; }
      if (!isset($rra['xff'])) { $rra['xff'] = 0.5; }
      if (!isset($rra['step'])) { $rra['step'] = 1; }
      if (!isset($rra['rows'])) { $rra['rows'] = 600; }
      $create_cmd .= ' RRA:'.$rra['cf'].':'.$rra['xff'].':'.$rra['step'].':'.$rra['rows'];
    }
    if ($this->rra_add_max) {
      foreach ($this->rra_base as $rra) {
        if (!isset($rra['cf'])) {
          // only rows that have no CF set will be looked at here
          $rra['cf'] = 'MAX';
          if (!isset($rra['xff'])) { $rra['xff'] = 0.5; }
          if (!isset($rra['step'])) { $rra['step'] = 1; }
          if (!isset($rra['rows'])) { $rra['rows'] = 600; }
          $create_cmd .= ' RRA:'.$rra['cf'].':'.$rra['xff'].':'.$rra['step'].':'.$rra['rows'];
        }
      }
    }
    $output = array(); $return_var = null;
    exec($create_cmd, $output, $return_var);
    if ($return_var) { trigger_error('rrd create returned with value '.$return_var, E_USER_WARNING); }
    else { $this->status = 'ok'; }
  }

  function update($upArray = null) {
    // feed new data into RRD
    if ($this->status != 'ok') { trigger_error('Cannot update non-writeable file', E_USER_WARNING); return 1; }
    $upvals = array();
    foreach($this->rrd_fields as $ds) {
      if (is_array($upArray) && isset($upArray[$ds['name']])) { $val = $upArray[$ds['name']]; }
      elseif (isset($ds['update'])) { $val = eval($ds['update']); }
      else { $val = null; }
      $upvals[] = $val;
    }
    $update_cmd = 'rrdtool update '.$this->rrd_file.' N:'.implode(':', $upvals);
    $output = array(); $return_var = null;
    exec($update_cmd, $output, $return_var);
    if ($return_var) { trigger_error('rrd update returned with value '.$return_var, E_USER_WARNING); }
  return ($return_var == 0);
  }

  function graph($filename, $timeframe, $extra = null) {
    // create an RRD graph
    static $gColors;

    if (!isset($gColors)) {
      $gColors = array('#00CC00','#0000FF','#000000','#FF0000','#00FF00','#FFFF00','#FF00FF','#00FFFF','#808080','#800000','#008000','#000080','#808000','#800080','#008080','#C0C0C0');
    }

    if (is_null($filename) || !strlen($filename)) { $filename = str_replace('.rrd', '-%tf.png', $this->rrd_file); }
    $fname = str_replace('%tf', $timeframe, $filename);
    if (substr($fname, -4) != '.png') { $fname .= '.png'; }

    $graphrows = array(); $gC = 0;
    $gDefs = ''; $gGraphs = ''; $addSpecial = '';

    if ($timeframe == 'day') {
      $duration = isset($extra['duration'])?$extra['duration']:30*3600; // 30 hours
      $slice = isset($extra['slice'])?$extra['slice']:300; // 5 minutes
      // vertical lines at day borders
      $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d')).'#FF0000';
      $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' -1 day').'#FF0000';
    }
    elseif ($timeframe == 'week') {
      $duration = isset($extra['duration'])?$extra['duration']:8*86400; // 8 days
      $slice = isset($extra['slice'])?$extra['slice']:1800; // 30 minutes
      // vertical lines at week borders
      $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' '.(-date('w')+1).' day').'#FF0000';
      $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' '.(-date('w')-6).' day').'#FF0000';
    }
    elseif ($timeframe == 'month') {
      $duration = isset($extra['duration'])?$extra['duration']:36*86400; // 36 days
      $slice = isset($extra['slice'])?$extra['slice']:7200; // 2 hours
      // vertical lines at month borders
      $addSpecial .= ' VRULE:'.strtotime(date('Y-m-01')).'#FF0000';
      $addSpecial .= ' VRULE:'.strtotime(date('Y-m-01').' -1 month').'#FF0000';
    }
    elseif ($timeframe == 'year') {
      $duration = isset($extra['duration'])?$extra['duration']:396*86400; // 365+31 days
      $slice = isset($extra['slice'])?$extra['slice']:86400; // 1 day
      // vertical lines at month borders
      $addSpecial .= ' VRULE:'.strtotime(date('Y-01-01')).'#FF0000';
      $addSpecial .= ' VRULE:'.strtotime(date('Y-01-01').' -1 year').'#FF0000';
    }
    else {
      $duration = isset($extra['duration'])?$extra['duration']:$this->rrd_step*500; // 500 steps
      $slice = isset($extra['slice'])?$extra['slice']:$this->rrd_step; // whatever our step is
    }

    if (isset($extra['rows']) && count($extra['rows'])) {
      foreach ($extra['rows'] as $erow) {
        if (isset($erow['name']) && strlen($erow['name'])) {
          $grow = array();
          $grow['dType'] = isset($erow['dType'])?$erow['dType']:'DEF';
          $grow['name'] = $erow['name'];
          $grow['dsname'] = isset($erow['dsname'])?$erow['dsname']:$erow['name'];
          $grow['cf'] = isset($erow['cf'])?$erow['cf']:'AVERAGE';
          $grow['gType'] = isset($erow['gType'])?$erow['gType']:'LINE1';
          $grow['color'] = isset($erow['color'])?$erow['color']:$gColors[$gC++];
          if ($gC >= count($gColors)) { $gC = 0; }
          if (isset($erow['legend'])) {
            $grow['legend'] = $erow['legend'];
            if (!isset($extra['show_legend'])) { $extra['show_legend'] = true; }
          }
          if (isset($erow['stack'])) { $grow['stack'] = ($erow['stack'] == true); }
          $graphrows[] = $grow;
        }
      }
    }
    else {
      foreach ($this->rrd_fields as $ds) {
        $grow = array();
        $grow['dType'] = 'DEF';
        $grow['name'] = $ds['name'];
        $grow['dsname'] = $ds['name'];
        $grow['cf'] = 'AVERAGE';
        $grow['gType'] = ($ds['name']=='ds0')?'AREA':'LINE1';
        $grow['color'] = $gColors[$gC++]; if ($gC >= count($gColors)) { $gC = 0; }
        $graphrows[] = $grow;
      }
    }

    $gOpts = ' --start '.($this->last_update()-$duration).' --end '.$this->last_update().' --step '.$slice;
    if (isset($extra['label_top'])) { $gOpts .= ' --title '.$extra['label_top']; }
    if (isset($extra['label_y'])) { $gOpts .= ' --vertical-label '.$extra['label_y']; }
    if (isset($extra['width'])) { $gOpts .= ' --width '.$extra['width']; }
    if (isset($extra['height'])) { $gOpts .= ' --height '.$extra['height'];
      if (($extra['height'] <= 32) && isset($extra['thumb']) && ($extra['thumb'])) { $gOpts .= ' --only-graph'; }
    }
    if (!isset($extra['show_legend']) || (!$extra['show_legend'])) { $gOpts .= ' --no-legend'; }
    if (isset($extra['min_y'])) { $gOpts .= ' --lower-limit '.$extra['min_y']; }
    if (isset($extra['max_y'])) { $gOpts .= ' --upper-limit '.$extra['max_y']; }
    if (isset($extra['fix_scale_y']) && $extra['fix_scale_y']) { $gOpts .= ' --rigid'; }
    if (isset($extra['grid_x'])) { $gOpts .= ' --x-grid '.$extra['grid_x']; }
    if (isset($extra['grid_y'])) { $gOpts .= ' --y-grid '.$extra['grid_y']; }
    if (isset($extra['units_exponent'])) { $gOpts .= ' --units-exponent '.$extra['units_exponent']; }
    if (isset($extra['units_length'])) { $gOpts .= ' --units-length '.$extra['units_length']; }
    if (!isset($extra['force_recreate']) || (!$extra['force_recreate'])) { $gOpts .= ' --lazy'; }
    if (isset($extra['force_color']) && is_array($extra['force_color'])) {
      foreach ($extra['force_color'] as $ctag=>$cval) { $gOpts .= ' --color '.$ctag.$cval; }
    }
    if (isset($extra['force_font']) && is_array($extra['force_font'])) {
      foreach ($extra['force_font'] as $ctag=>$cval) { $gOpts .= ' --font '.$ctag.$cval; }
    }
    if (isset($extra['units_binary']) && $extra['units_binary']) { $gOpts .= ' --base 1024'; }

    foreach ($graphrows as $grow) {
      if (isset($grow['dType']) && strlen($grow['dType'])) {
        $gDefs .= ' '.$grow['dType'].':'.$grow['name'].'=';
        $gDefs .= ($grow['dType']=='DEF')?$this->rrd_file.':'.$grow['dsname'].':'.$grow['cf']:$grow['rpn_expr'];
      }
      if (isset($grow['gType']) && strlen($grow['gType'])) {
        // XXX: current rrdtools version doesn't support STACK flag, only STACK type
        if (isset($grow['stack']) && $grow['stack']) { $grow['gType'] = 'STACK'; }
        $gGraphs .= ' '.$grow['gType'].':'.$grow['name'].$grow['color'];
        if (isset($grow['legend'])) { $gGraphs .= ':'.$this->text_quote($grow['legend']); }
        // XXX: when STACK flag is supported, remove above STACK if-command and uncomment the one below
        //if (isset($grow['stack']) && $grow['stack']) { $gGraphs .= ':STACK'; }
      }
    }

    $graph_cmd = 'rrdtool graph '.$fname.$gOpts.$gDefs.$gGraphs.$addSpecial;
    $return = `$graph_cmd 2>&1`;

    $retval = 0;
    if (strpos($return, 'ERROR') !== false) {
      trigger_error('rrd graph error: '.$return, E_USER_WARNING);
      $retval = 1;
    }
  return $retval;
  }

  function simple_html($page_extras = null, $graph_extras = null) {
    // create a simple (MRTG-like) HTML page and return it in a string
    $basename = str_replace('.rrd', '', $this->rrd_file);
    $out = '<html><head><title>'.$basename.' - RRD statistics</title></head><body>';

    $out .= '<p>Last Update: '.date('Y-m-d H:i:s', $this->last_update()).'</p>';

    if (in_array($this->status, array('ok','readonly'))) {
      foreach (array('day','week','month','year') as $tframe) {
        $this->graph(null, $tframe, $graph_extras);
        $out .= '<p><img src="'.$basename.'-'.$tframe.'.png"></p>';
      }
    }
    else {
      $out .= 'RRD error: status is "'.$this->status.'"';
    }

    $ou .= '</body></html>';
  return $out;
  }

  function last_update() {
    // fetch time of last update in this RRD file
    static $last_update;
    if (!isset($last_update) && in_array($this->status, array('ok','readonly'))) {
      $last_cmd = 'rrdtool last '.$this->rrd_file;
      $return = trim(`$last_cmd 2>&1`);
      $last_update = is_numeric($return)?$return:null;
    }
  return isset($last_update)?$last_update:null;
  }

  function text_quote($text) { return '"'.str_replace('"', '\"', str_replace(':', '\:', $text)).'"'; }
}
?>
Commit	Line	Data
b7878f4d	1	<?php
	2	// ********** RRD status class ************
	3	class rrdstat {
	4
	5	var $rrd_file = 'sample.rrd';
	6
	7	var $rrd_fields = array();
	8	var $rra_base = array();
	9	var $rrd_step = 300;
	10	var $rra_add_max = true;
	11
	12	var $status = 'unused';
	13
	14	function rrdstat($init_info = null) {
	15	// *** init RRD stat module ***
	16	$this->set_def($init_info);
	17
	18	if (!is_writeable($this->rrd_file)) {
	19	if (!file_exists($this->rrd_file)) {
	20	if (touch($this->rrd_file)) { $this->create(); }
	21	else { trigger_error('RRD file can not be created', E_USER_WARNING); }
	22	}
	23	else {
	24	if (is_readable($this->rrd_file)) { $this->status = 'readonly'; }
	25	else { trigger_error('RRD file is not readable', E_USER_WARNING); }
	26	}
	27	}
	28	else {
	29	$this->status = 'ok';
	30	}
	31	}
	32
	33	function set_def($init_info = null) {
	34	if (is_array($init_info) && isset($init_info['file'])) {
	35	// we have an array in the format we like to have
	36	$iinfo =& $init_info;
	37	}
	38	else {
	39	// we have something else (XML data?), try to generate the iinfo aray from it
	40	$iinfo =& $init_info;
	41	}
	42
	43	if (!isset($iinfo['file'])) { return false; }
	44
	45	$this->rrd_file = $iinfo['file'];
	46
	47	// fields (data sources, DS)
	48	// name - DS name
	49	// type - one of COUNTER, GAUGE, DERIVE, ABSOLUTE
	50	// heartbeat - if no sample recieved for that time, store UNKNOWN
	51	// min - U (unconstrained) or minimum value
	52	// max - U (unconstrained) or maximum value
	53	// update - this string will be fed into eval() for updating this field
	54	if (isset($iinfo['fields']) && is_array($iinfo['fields'])) {
	55	$this->rrd_fields = $iinfo['fields'];
	56	}
	57	else {
	58	$this->rrd_fields[] = array('name' => 'ds0', 'type' => 'COUNTER', 'heartbeat' => 600, 'min' => 'U', 'max' => 'U');
	59	$this->rrd_fields[] = array('name' => 'ds1', 'type' => 'COUNTER', 'heartbeat' => 600, 'min' => 'U', 'max' => 'U');
	60	}
	61
	62
	63	// MRTG-style RRD "database", see http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/tut/rrdtutorial.en.html
	64	//
65	// archives (RRAs):
66	// 600 samples of 5 minutes (2 days and 2 hours)
67	// 700 samples of 30 minutes (2 days and 2 hours, plus 12.5 days)
68	// 775 samples of 2 hours (above + 50 days)
69	// 797 samples of 1 day (above + 732 days, rounded up to 797)
70
71	$this->rrd_step = isset($iinfo['rrd_step'])?$iinfo['rrd_step']:300;
72
73	if (isset($iinfo['rra_base']) && is_array($iinfo['rra_base'])) {
74	$this->rra_base = $iinfo['rra_base'];
75	}
76	else {
77	$this->rra_base[] = array('step' => 1, 'rows' => 600);
78	$this->rra_base[] = array('step' => 6, 'rows' => 700);
79	$this->rra_base[] = array('step' => 24, 'rows' => 775);
80	$this->rra_base[] = array('step' => 288, 'rows' => 797);
81	}
82
83	$this->rra_add_max = isset($iinfo['rra_add_max'])?$iinfo['rra_add_max']:true;
84	}
85
86	function create() {
87	// create RRD file
88
89	// compose create command
90	$create_cmd = 'rrdtool create '.$this->rrd_file.' --step '.$this->rrd_step;
91	foreach ($this->rrd_fields as $ds) {
92	if (!isset($ds['type'])) { $ds['type'] = 'COUNTER'; }
93	if (!isset($ds['heartbeat'])) { $ds['heartbeat'] = 2*$this->rrd_step; }
94	if (!isset($ds['min'])) { $ds['min'] = 'U'; }
95	if (!isset($ds['max'])) { $ds['max'] = 'U'; }
96	$create_cmd .= ' DS:'.$ds['name'].':'.$ds['type'].':'.$ds['heartbeat'].':'.$ds['min'].':'.$ds['max'];
97	}
98	foreach ($this->rra_base as $rra) {
99	if (!isset($rra['cf'])) { $rra['cf'] = 'AVERAGE'; }
100	if (!isset($rra['xff'])) { $rra['xff'] = 0.5; }
101	if (!isset($rra['step'])) { $rra['step'] = 1; }
102	if (!isset($rra['rows'])) { $rra['rows'] = 600; }
103	$create_cmd .= ' RRA:'.$rra['cf'].':'.$rra['xff'].':'.$rra['step'].':'.$rra['rows'];
104	}
105	if ($this->rra_add_max) {
106	foreach ($this->rra_base as $rra) {
107	if (!isset($rra['cf'])) {
108	// only rows that have no CF set will be looked at here
109	$rra['cf'] = 'MAX';
110	if (!isset($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'];
114	}
115	}
116	}
117	$output = array(); $return_var = null;
118	exec($create_cmd, $output, $return_var);
119	if ($return_var) { trigger_error('rrd create returned with value '.$return_var, E_USER_WARNING); }
120	else { $this->status = 'ok'; }
121	}
122
123	function update($upArray = null) {
124	// feed new data into RRD
125	if ($this->status != 'ok') { trigger_error('Cannot update non-writeable file', E_USER_WARNING); return 1; }
126	$upvals = array();
127	foreach($this->rrd_fields as $ds) {
128	if (is_array($upArray) && isset($upArray[$ds['name']])) { $val = $upArray[$ds['name']]; }
129	elseif (isset($ds['update'])) { $val = eval($ds['update']); }
130	else { $val = null; }
131	$upvals[] = $val;
132	}
133	$update_cmd = 'rrdtool update '.$this->rrd_file.' N:'.implode(':', $upvals);
134	$output = array(); $return_var = null;
135	exec($update_cmd, $output, $return_var);
136	if ($return_var) { trigger_error('rrd update returned with value '.$return_var, E_USER_WARNING); }
137	return ($return_var == 0);
138	}
139
140	function graph($filename, $timeframe, $extra = null) {
141	// create an RRD graph
142	static $gColors;
143
144	if (!isset($gColors)) {
145	$gColors = array('#00CC00','#0000FF','#000000','#FF0000','#00FF00','#FFFF00','#FF00FF','#00FFFF','#808080','#800000','#008000','#000080','#808000','#800080','#008080','#C0C0C0');
146	}
147
148	if (is_null($filename) \|\| !strlen($filename)) { $filename = str_replace('.rrd', '-%tf.png', $this->rrd_file); }
149	$fname = str_replace('%tf', $timeframe, $filename);
150	if (substr($fname, -4) != '.png') { $fname .= '.png'; }
151
b7878f4d	152	$graphrows = array(); $gC = 0;
4ba56977	153	$gDefs = ''; $gGraphs = ''; $addSpecial = '';
	154
	155	if ($timeframe == 'day') {
	156	$duration = isset($extra['duration'])?$extra['duration']:30*3600; // 30 hours
	157	$slice = isset($extra['slice'])?$extra['slice']:300; // 5 minutes
	158	// vertical lines at day borders
	159	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-d')).'#FF0000';
	160	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' -1 day').'#FF0000';
	161	}
	162	elseif ($timeframe == 'week') {
	163	$duration = isset($extra['duration'])?$extra['duration']:8*86400; // 8 days
	164	$slice = isset($extra['slice'])?$extra['slice']:1800; // 30 minutes
	165	// vertical lines at week borders
	166	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' '.(-date('w')+1).' day').'#FF0000';
	167	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' '.(-date('w')-6).' day').'#FF0000';
	168	}
	169	elseif ($timeframe == 'month') {
	170	$duration = isset($extra['duration'])?$extra['duration']:36*86400; // 36 days
	171	$slice = isset($extra['slice'])?$extra['slice']:7200; // 2 hours
	172	// vertical lines at month borders
	173	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-01')).'#FF0000';
	174	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-01').' -1 month').'#FF0000';
	175	}
	176	elseif ($timeframe == 'year') {
	177	$duration = isset($extra['duration'])?$extra['duration']:396*86400; // 365+31 days
	178	$slice = isset($extra['slice'])?$extra['slice']:86400; // 1 day
	179	// vertical lines at month borders
	180	$addSpecial .= ' VRULE:'.strtotime(date('Y-01-01')).'#FF0000';
	181	$addSpecial .= ' VRULE:'.strtotime(date('Y-01-01').' -1 year').'#FF0000';
	182	}
	183	else {
	184	$duration = isset($extra['duration'])?$extra['duration']:$this->rrd_step*500; // 500 steps
	185	$slice = isset($extra['slice'])?$extra['slice']:$this->rrd_step; // whatever our step is
	186	}
	187
b7878f4d	188	if (isset($extra['rows']) && count($extra['rows'])) {
	189	foreach ($extra['rows'] as $erow) {
	190	if (isset($erow['name']) && strlen($erow['name'])) {
	191	$grow = array();
	192	$grow['dType'] = isset($erow['dType'])?$erow['dType']:'DEF';
	193	$grow['name'] = $erow['name'];
	194	$grow['dsname'] = isset($erow['dsname'])?$erow['dsname']:$erow['name'];
	195	$grow['cf'] = isset($erow['cf'])?$erow['cf']:'AVERAGE';
	196	$grow['gType'] = isset($erow['gType'])?$erow['gType']:'LINE1';
	197	$grow['color'] = isset($erow['color'])?$erow['color']:$gColors[$gC++];
	198	if ($gC >= count($gColors)) { $gC = 0; }
4ba56977	199	if (isset($erow['legend'])) {
	200	$grow['legend'] = $erow['legend'];
	201	if (!isset($extra['show_legend'])) { $extra['show_legend'] = true; }
	202	}
b7878f4d	203	if (isset($erow['stack'])) { $grow['stack'] = ($erow['stack'] == true); }
	204	$graphrows[] = $grow;
	205	}
	206	}
	207	}
	208	else {
	209	foreach ($this->rrd_fields as $ds) {
	210	$grow = array();
	211	$grow['dType'] = 'DEF';
	212	$grow['name'] = $ds['name'];
	213	$grow['dsname'] = $ds['name'];
	214	$grow['cf'] = 'AVERAGE';
	215	$grow['gType'] = ($ds['name']=='ds0')?'AREA':'LINE1';
	216	$grow['color'] = $gColors[$gC++]; if ($gC >= count($gColors)) { $gC = 0; }
	217	$graphrows[] = $grow;
	218	}
	219	}
	220
4ba56977	221	$gOpts = ' --start '.($this->last_update()-$duration).' --end '.$this->last_update().' --step '.$slice;
	222	if (isset($extra['label_top'])) { $gOpts .= ' --title '.$extra['label_top']; }
	223	if (isset($extra['label_y'])) { $gOpts .= ' --vertical-label '.$extra['label_y']; }
	224	if (isset($extra['width'])) { $gOpts .= ' --width '.$extra['width']; }
	225	if (isset($extra['height'])) { $gOpts .= ' --height '.$extra['height'];
	226	if (($extra['height'] <= 32) && isset($extra['thumb']) && ($extra['thumb'])) { $gOpts .= ' --only-graph'; }
	227	}
	228	if (!isset($extra['show_legend']) \|\| (!$extra['show_legend'])) { $gOpts .= ' --no-legend'; }
	229	if (isset($extra['min_y'])) { $gOpts .= ' --lower-limit '.$extra['min_y']; }
	230	if (isset($extra['max_y'])) { $gOpts .= ' --upper-limit '.$extra['max_y']; }
	231	if (isset($extra['fix_scale_y']) && $extra['fix_scale_y']) { $gOpts .= ' --rigid'; }
	232	if (isset($extra['grid_x'])) { $gOpts .= ' --x-grid '.$extra['grid_x']; }
	233	if (isset($extra['grid_y'])) { $gOpts .= ' --y-grid '.$extra['grid_y']; }
	234	if (isset($extra['units_exponent'])) { $gOpts .= ' --units-exponent '.$extra['units_exponent']; }
	235	if (isset($extra['units_length'])) { $gOpts .= ' --units-length '.$extra['units_length']; }
	236	if (!isset($extra['force_recreate']) \|\| (!$extra['force_recreate'])) { $gOpts .= ' --lazy'; }
	237	if (isset($extra['force_color']) && is_array($extra['force_color'])) {
	238	foreach ($extra['force_color'] as $ctag=>$cval) { $gOpts .= ' --color '.$ctag.$cval; }
	239	}
	240	if (isset($extra['force_font']) && is_array($extra['force_font'])) {
	241	foreach ($extra['force_font'] as $ctag=>$cval) { $gOpts .= ' --font '.$ctag.$cval; }
	242	}
	243	if (isset($extra['units_binary']) && $extra['units_binary']) { $gOpts .= ' --base 1024'; }
	244
b7878f4d	245	foreach ($graphrows as $grow) {
4ba56977	246	if (isset($grow['dType']) && strlen($grow['dType'])) {
	247	$gDefs .= ' '.$grow['dType'].':'.$grow['name'].'=';
	248	$gDefs .= ($grow['dType']=='DEF')?$this->rrd_file.':'.$grow['dsname'].':'.$grow['cf']:$grow['rpn_expr'];
	249	}
	250	if (isset($grow['gType']) && strlen($grow['gType'])) {
	251	// XXX: current rrdtools version doesn't support STACK flag, only STACK type
	252	if (isset($grow['stack']) && $grow['stack']) { $grow['gType'] = 'STACK'; }
	253	$gGraphs .= ' '.$grow['gType'].':'.$grow['name'].$grow['color'];
	254	if (isset($grow['legend'])) { $gGraphs .= ':'.$this->text_quote($grow['legend']); }
	255	// XXX: when STACK flag is supported, remove above STACK if-command and uncomment the one below
	256	//if (isset($grow['stack']) && $grow['stack']) { $gGraphs .= ':STACK'; }
	257	}
b7878f4d	258	}
b7878f4d	259
4ba56977	260	$graph_cmd = 'rrdtool graph '.$fname.$gOpts.$gDefs.$gGraphs.$addSpecial;
b7878f4d	261	$return = `$graph_cmd 2>&1`;
	262
	263	$retval = 0;
	264	if (strpos($return, 'ERROR') !== false) {
	265	trigger_error('rrd graph error: '.$return, E_USER_WARNING);
	266	$retval = 1;
	267	}
	268	return $retval;
	269	}
	270
	271	function simple_html($page_extras = null, $graph_extras = null) {
	272	// create a simple (MRTG-like) HTML page and return it in a string
	273	$basename = str_replace('.rrd', '', $this->rrd_file);
	274	$out = '<html><head><title>'.$basename.' - RRD statistics</title></head><body>';
	275
4ba56977	276	$out .= '<p>Last Update: '.date('Y-m-d H:i:s', $this->last_update()).'</p>';
4ba56977	277
b7878f4d	278	if (in_array($this->status, array('ok','readonly'))) {
	279	foreach (array('day','week','month','year') as $tframe) {
	280	$this->graph(null, $tframe, $graph_extras);
	281	$out .= '<p><img src="'.$basename.'-'.$tframe.'.png"></p>';
	282	}
	283	}
	284	else {
	285	$out .= 'RRD error: status is "'.$this->status.'"';
	286	}
	287
	288	$ou .= '</body></html>';
	289	return $out;
	290	}
	291
4ba56977	292	function last_update() {
	293	// fetch time of last update in this RRD file
	294	static $last_update;
	295	if (!isset($last_update) && in_array($this->status, array('ok','readonly'))) {
	296	$last_cmd = 'rrdtool last '.$this->rrd_file;
	297	$return = trim(`$last_cmd 2>&1`);
	298	$last_update = is_numeric($return)?$return:null;
	299	}
	300	return isset($last_update)?$last_update:null;
	301	}
	302
b7878f4d	303	function text_quote($text) { return '"'.str_replace('"', '\"', str_replace(':', '\:', $text)).'"'; }
	304	}
	305	?>