82 lines
2.1 KiB
PHP
82 lines
2.1 KiB
PHP
<?php
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// Sample Pluggable datasource for PHP Weathermap 0.9
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// - read a pair of values from a database, and return it
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// TARGET dbplug:databasename:username:pass:hostkey
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class WeatherMapDataSource_mrtg extends WeatherMapDataSource {
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function Recognise($targetstring)
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{
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if(preg_match("/\.(htm|html)$/",$targetstring,$matches))
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{
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return TRUE;
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}
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else
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{
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return FALSE;
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}
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}
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function ReadData($targetstring, &$map, &$item)
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{
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$data['IN'] = NULL;
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$data['OUT'] = NULL;
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$data_time = 0;
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$matchvalue= $item->get_hint('mrtg_value');
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$matchperiod = $item->get_hint('mrtg_period');
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$swap = intval($item->get_hint('mrtg_swap'));
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$negate = intval($item->get_hint('mrtg_negate'));
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if($matchvalue =='') $matchvalue = "cu";
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if($matchperiod =='') $matchperiod = "d";
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$fd=fopen($targetstring, "r");
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if ($fd)
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{
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while (!feof($fd))
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{
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$buffer=fgets($fd, 4096);
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wm_debug("MRTG ReadData: Matching on '{$matchvalue}in $matchperiod' and '{$matchvalue}out $matchperiod'\n");
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if (preg_match("/<\!-- {$matchvalue}in $matchperiod ([-+]?\d+\.?\d*) -->/", $buffer, $matches)) { $data['IN'] = $matches[1] * 8; }
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if (preg_match("/<\!-- {$matchvalue}out $matchperiod ([-+]?\d+\.?\d*) -->/", $buffer, $matches)) { $data['OUT'] = $matches[1] * 8; }
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}
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fclose($fd);
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# don't bother with the modified time if the target is a URL
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if(! preg_match('/^[a-z]+:\/\//',$targetstring) )
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{
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$data_time = filemtime($targetstring);
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}
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}
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else
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{
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// some error code to go in here
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wm_debug ("MRTG ReadData: Couldn't open ($targetstring). \n");
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}
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if($swap==1)
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{
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wm_debug("MRTG ReadData: Swapping IN and OUT\n");
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$t = $data['OUT'];
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$data['OUT'] = $data['IN'];
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$data['IN'] = $t;
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}
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if($negate)
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{
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wm_debug("MRTG ReadData: Negating values\n");
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$data['OUT'] = -$data['OUT'];
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$data['IN'] = -$data['IN'];
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}
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wm_debug ("MRTG ReadData: Returning (".($data['IN']===NULL?'NULL':$data['IN']).",".($data['OUT']===NULL?'NULL':$data['OUT']).",$data_time)\n");
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return( array($data['IN'], $data['OUT'], $data_time) );
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}
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}
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// vim:ts=4:sw=4:
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