weathermap

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[/] [lib/] [datasources/] [WeatherMapDataSource_mrtg.php] - Rev 84 Go to most recent revision
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<?php
// Sample Pluggable datasource for PHP Weathermap 0.9
// - read a pair of values from a database, and return it

// TARGET dbplug:databasename:username:pass:hostkey

class WeatherMapDataSource_mrtg extends WeatherMapDataSource {

        function Recognise($targetstring)
        {
                if(preg_match("/\.(htm|html)$/",$targetstring,$matches))
                {
                        return TRUE;
                }
                else
                {
                        return FALSE;
                }
        }

        function ReadData($targetstring, &$map, &$item)
        {
                $inbw=-1;
                $outbw=-1;
                $data_time = 0;

                $matches=0;

//              $fd=fopen($targetstring, "r");
 
  $timeout = 2;
  $old = ini_set('default_socket_timeout', $timeout);
  $fd = fopen($targetstring, 'r');
  ini_set('default_socket_timeout', $old);
  stream_set_timeout($fd, $timeout);
  stream_set_blocking($fd, 0);




                if ($fd)
                {
                        while (!feof($fd))
                        {
                                $buffer=fgets($fd, 4096);

                                if (preg_match("/<\!-- cuin d (\d+) -->/", $buffer, $matches)) { $inbw=$matches[1] * 8; }

                                if (preg_match("/<\!-- cuout d (\d+) -->/", $buffer, $matches)) { $outbw=$matches[1] * 8; }
                        }
                        fclose($fd);
                #       $data_time = filemtime($targetstring);
                }
                else {
                        // some error code to go in here
                        debug ("MRTG ReadData: Couldn't open ($targetstring). \n"); }

                        debug ("MRTG ReadData: Returning ($inbw,$outbw,$data_time)\n");

                        return ( array($inbw,$outbw,$data_time) );
        }
}

// vim:ts=4:sw=4:
?>