[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';
      $addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' -1 day').'#FF0000';
      if (!isset($extra['grid_x'])) { $extra['grid_x'] = 'HOUR:1:HOUR:6:HOUR:2:0:%-H'; }
    }
    elseif ($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($erow['name'])) {
          if (!isset($erow['scale']) && isset($extra['scale'])) { $erow['scale'] = $extra['scale']; }
          $grow = array();
          $grow['dType'] = isset($erow['dType'])?$erow['dType']:'DEF';
          $grow['name'] = $erow['name'].(isset($erow['scale'])?'_tmp':'');
          $grow['dsname'] = isset($erow['dsname'])?$erow['dsname']:$erow['name'];
          $grow['cf'] = isset($erow['cf'])?$erow['cf']:'AVERAGE';
          if (isset($erow['rpn_expr'])) { $grow['rpn_expr'] = $erow['rpn_expr']; }
          if (isset($erow['scale'])) {
            $graphrows[] = $grow;
            $grow = array();
            $grow['dType'] = 'CDEF';
            $grow['name'] = $erow['name'];
            $grow['rpn_expr'] = $erow['name'].'_tmp,'.$erow['scale'].',*';
          }
          $grow['gType'] = isset($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'] = $ds['name'].(isset($extra['scale'])?'_tmp':'');
        $grow['dsname'] = $ds['name'];
        $grow['cf'] = 'AVERAGE';
        if (isset($extra['scale'])) {
          $graphrows[] = $grow;
          $grow = array();
          $grow['dType'] = 'CDEF';
          $grow['name'] = $ds['name'];
          $grow['rpn_expr'] = $ds['name'].'_tmp,'.$extra['scale'].',*';
        }
        $grow['gType'] = ($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'])) { $gOpts .= ' --title '.$this->text_quote($extra['label_top']); }
    if (isset($extra['label_y'])) { $gOpts .= ' --vertical-label '.$this->text_quote($extra['label_y']); }
    if (isset($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 '.str_replace('*', '\*', $fname.$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	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' -1 day').'#FF0000';
5f42eda6	161	if (!isset($extra['grid_x'])) { $extra['grid_x'] = 'HOUR:1:HOUR:6:HOUR:2:0:%-H'; }
4ba56977	162	}
	163	elseif ($timeframe == 'week') {
	164	$duration = isset($extra['duration'])?$extra['duration']:8*86400; // 8 days
	165	$slice = isset($extra['slice'])?$extra['slice']:1800; // 30 minutes
	166	// vertical lines at week borders
	167	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' '.(-date('w')+1).' day').'#FF0000';
	168	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-d').' '.(-date('w')-6).' day').'#FF0000';
	169	}
	170	elseif ($timeframe == 'month') {
	171	$duration = isset($extra['duration'])?$extra['duration']:36*86400; // 36 days
	172	$slice = isset($extra['slice'])?$extra['slice']:7200; // 2 hours
	173	// vertical lines at month borders
	174	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-01')).'#FF0000';
	175	$addSpecial .= ' VRULE:'.strtotime(date('Y-m-01').' -1 month').'#FF0000';
	176	}
	177	elseif ($timeframe == 'year') {
	178	$duration = isset($extra['duration'])?$extra['duration']:396*86400; // 365+31 days
	179	$slice = isset($extra['slice'])?$extra['slice']:86400; // 1 day
	180	// vertical lines at month borders
	181	$addSpecial .= ' VRULE:'.strtotime(date('Y-01-01')).'#FF0000';
	182	$addSpecial .= ' VRULE:'.strtotime(date('Y-01-01').' -1 year').'#FF0000';
	183	}
	184	else {
	185	$duration = isset($extra['duration'])?$extra['duration']:$this->rrd_step*500; // 500 steps
	186	$slice = isset($extra['slice'])?$extra['slice']:$this->rrd_step; // whatever our step is
	187	}
	188
b7878f4d	189	if (isset($extra['rows']) && count($extra['rows'])) {
	190	foreach ($extra['rows'] as $erow) {
	191	if (isset($erow['name']) && strlen($erow['name'])) {
5f42eda6	192	if (!isset($erow['scale']) && isset($extra['scale'])) { $erow['scale'] = $extra['scale']; }
b7878f4d	193	$grow = array();
b7878f4d	194	$grow['dType'] = isset($erow['dType'])?$erow['dType']:'DEF';
5f42eda6	195	$grow['name'] = $erow['name'].(isset($erow['scale'])?'_tmp':'');
b7878f4d	196	$grow['dsname'] = isset($erow['dsname'])?$erow['dsname']:$erow['name'];
b7878f4d	197	$grow['cf'] = isset($erow['cf'])?$erow['cf']:'AVERAGE';
5f42eda6	198	if (isset($erow['rpn_expr'])) { $grow['rpn_expr'] = $erow['rpn_expr']; }
	199	if (isset($erow['scale'])) {
	200	$graphrows[] = $grow;
	201	$grow = array();
	202	$grow['dType'] = 'CDEF';
	203	$grow['name'] = $erow['name'];
	204	$grow['rpn_expr'] = $erow['name'].'_tmp,'.$erow['scale'].',*';
	205	}
b7878f4d	206	$grow['gType'] = isset($erow['gType'])?$erow['gType']:'LINE1';
	207	$grow['color'] = isset($erow['color'])?$erow['color']:$gColors[$gC++];
	208	if ($gC >= count($gColors)) { $gC = 0; }
4ba56977	209	if (isset($erow['legend'])) {
	210	$grow['legend'] = $erow['legend'];
	211	if (!isset($extra['show_legend'])) { $extra['show_legend'] = true; }
	212	}
b7878f4d	213	if (isset($erow['stack'])) { $grow['stack'] = ($erow['stack'] == true); }
	214	$graphrows[] = $grow;
	215	}
	216	}
	217	}
	218	else {
	219	foreach ($this->rrd_fields as $ds) {
	220	$grow = array();
	221	$grow['dType'] = 'DEF';
5f42eda6	222	$grow['name'] = $ds['name'].(isset($extra['scale'])?'_tmp':'');
b7878f4d	223	$grow['dsname'] = $ds['name'];
b7878f4d	224	$grow['cf'] = 'AVERAGE';
5f42eda6	225	if (isset($extra['scale'])) {
	226	$graphrows[] = $grow;
	227	$grow = array();
	228	$grow['dType'] = 'CDEF';
	229	$grow['name'] = $ds['name'];
	230	$grow['rpn_expr'] = $ds['name'].'_tmp,'.$extra['scale'].',*';
	231	}
b7878f4d	232	$grow['gType'] = ($ds['name']=='ds0')?'AREA':'LINE1';
	233	$grow['color'] = $gColors[$gC++]; if ($gC >= count($gColors)) { $gC = 0; }
	234	$graphrows[] = $grow;
	235	}
	236	}
	237
4ba56977	238	$gOpts = ' --start '.($this->last_update()-$duration).' --end '.$this->last_update().' --step '.$slice;
5f42eda6	239	if (isset($extra['label_top'])) { $gOpts .= ' --title '.$this->text_quote($extra['label_top']); }
5f42eda6	240	if (isset($extra['label_y'])) { $gOpts .= ' --vertical-label '.$this->text_quote($extra['label_y']); }
4ba56977	241	if (isset($extra['width'])) { $gOpts .= ' --width '.$extra['width']; }
	242	if (isset($extra['height'])) { $gOpts .= ' --height '.$extra['height'];
	243	if (($extra['height'] <= 32) && isset($extra['thumb']) && ($extra['thumb'])) { $gOpts .= ' --only-graph'; }
	244	}
	245	if (!isset($extra['show_legend']) \|\| (!$extra['show_legend'])) { $gOpts .= ' --no-legend'; }
	246	if (isset($extra['min_y'])) { $gOpts .= ' --lower-limit '.$extra['min_y']; }
	247	if (isset($extra['max_y'])) { $gOpts .= ' --upper-limit '.$extra['max_y']; }
	248	if (isset($extra['fix_scale_y']) && $extra['fix_scale_y']) { $gOpts .= ' --rigid'; }
	249	if (isset($extra['grid_x'])) { $gOpts .= ' --x-grid '.$extra['grid_x']; }
	250	if (isset($extra['grid_y'])) { $gOpts .= ' --y-grid '.$extra['grid_y']; }
	251	if (isset($extra['units_exponent'])) { $gOpts .= ' --units-exponent '.$extra['units_exponent']; }
	252	if (isset($extra['units_length'])) { $gOpts .= ' --units-length '.$extra['units_length']; }
	253	if (!isset($extra['force_recreate']) \|\| (!$extra['force_recreate'])) { $gOpts .= ' --lazy'; }
	254	if (isset($extra['force_color']) && is_array($extra['force_color'])) {
	255	foreach ($extra['force_color'] as $ctag=>$cval) { $gOpts .= ' --color '.$ctag.$cval; }
	256	}
	257	if (isset($extra['force_font']) && is_array($extra['force_font'])) {
	258	foreach ($extra['force_font'] as $ctag=>$cval) { $gOpts .= ' --font '.$ctag.$cval; }
	259	}
	260	if (isset($extra['units_binary']) && $extra['units_binary']) { $gOpts .= ' --base 1024'; }
	261
b7878f4d	262	foreach ($graphrows as $grow) {
4ba56977	263	if (isset($grow['dType']) && strlen($grow['dType'])) {
	264	$gDefs .= ' '.$grow['dType'].':'.$grow['name'].'=';
	265	$gDefs .= ($grow['dType']=='DEF')?$this->rrd_file.':'.$grow['dsname'].':'.$grow['cf']:$grow['rpn_expr'];
	266	}
	267	if (isset($grow['gType']) && strlen($grow['gType'])) {
	268	// XXX: current rrdtools version doesn't support STACK flag, only STACK type
	269	if (isset($grow['stack']) && $grow['stack']) { $grow['gType'] = 'STACK'; }
	270	$gGraphs .= ' '.$grow['gType'].':'.$grow['name'].$grow['color'];
	271	if (isset($grow['legend'])) { $gGraphs .= ':'.$this->text_quote($grow['legend']); }
	272	// XXX: when STACK flag is supported, remove above STACK if-command and uncomment the one below
	273	//if (isset($grow['stack']) && $grow['stack']) { $gGraphs .= ':STACK'; }
	274	}
b7878f4d	275	}
b7878f4d	276
5f42eda6	277	$graph_cmd = 'rrdtool graph '.str_replace('', '\', $fname.$gOpts.$gDefs.$gGraphs.$addSpecial);
b7878f4d	278	$return = `$graph_cmd 2>&1`;
	279
	280	$retval = 0;
	281	if (strpos($return, 'ERROR') !== false) {
	282	trigger_error('rrd graph error: '.$return, E_USER_WARNING);
	283	$retval = 1;
	284	}
	285	return $retval;
	286	}
	287
	288	function simple_html($page_extras = null, $graph_extras = null) {
	289	// create a simple (MRTG-like) HTML page and return it in a string
	290	$basename = str_replace('.rrd', '', $this->rrd_file);
	291	$out = '<html><head><title>'.$basename.' - RRD statistics</title></head><body>';
	292
4ba56977	293	$out .= '<p>Last Update: '.date('Y-m-d H:i:s', $this->last_update()).'</p>';
4ba56977	294
b7878f4d	295	if (in_array($this->status, array('ok','readonly'))) {
	296	foreach (array('day','week','month','year') as $tframe) {
	297	$this->graph(null, $tframe, $graph_extras);
	298	$out .= '<p><img src="'.$basename.'-'.$tframe.'.png"></p>';
	299	}
	300	}
	301	else {
	302	$out .= 'RRD error: status is "'.$this->status.'"';
	303	}
	304
	305	$ou .= '</body></html>';
	306	return $out;
	307	}
	308
4ba56977	309	function last_update() {
	310	// fetch time of last update in this RRD file
	311	static $last_update;
	312	if (!isset($last_update) && in_array($this->status, array('ok','readonly'))) {
	313	$last_cmd = 'rrdtool last '.$this->rrd_file;
	314	$return = trim(`$last_cmd 2>&1`);
	315	$last_update = is_numeric($return)?$return:null;
	316	}
	317	return isset($last_update)?$last_update:null;
	318	}
	319
b7878f4d	320	function text_quote($text) { return '"'.str_replace('"', '\"', str_replace(':', '\:', $text)).'"'; }
	321	}
	322	?>