| 1 | 85 | simandl | <?php |
| 2 | | | // Sample Pluggable datasource for PHP Weathermap 0.9 |
| 3 | | | // - read a pair of values from a database, and return it |
| 4 | 83 | simandl | |
| 5 | 85 | simandl | // TARGET dbplug:databasename:username:pass:hostkey |
| 6 | 83 | simandl | |
| 7 | 85 | simandl | class WeatherMapDataSource_mrtg extends WeatherMapDataSource { |
| 8 | 83 | simandl | |
| 9 | 85 | simandl | function Recognise($targetstring) |
| 10 | | | { |
| 11 | | | if(preg_match("/\.(htm|html)$/",$targetstring,$matches)) |
| 12 | | | { |
| 13 | | | return TRUE; |
| 14 | | | } |
| 15 | | | else |
| 16 | | | { |
| 17 | | | return FALSE; |
| 18 | | | } |
| 19 | | | } |
| 20 | | | |
| 21 | | | function ReadData($targetstring, &$map, &$item) |
| 22 | | | { |
| 23 | | | $data[IN] = NULL; |
| 24 | | | $data[OUT] = NULL; |
| 25 | | | $data_time = 0; |
| 26 | | | |
| 27 | | | $matchvalue= $item->get_hint('mrtg_value'); |
| 28 | | | $matchperiod = $item->get_hint('mrtg_period'); |
| 29 | | | $swap = intval($item->get_hint('mrtg_swap')); |
| 30 | | | $negate = intval($item->get_hint('mrtg_negate')); |
| 31 | | | |
| 32 | | | if($matchvalue =='') $matchvalue = "cu"; |
| 33 | | | if($matchperiod =='') $matchperiod = "d"; |
| 34 | | | |
| 35 | | | $fd=fopen($targetstring, "r"); |
| 36 | | | |
| 37 | | | if ($fd) |
| 38 | | | { |
| 39 | | | while (!feof($fd)) |
| 40 | | | { |
| 41 | | | $buffer=fgets($fd, 4096); |
| 42 | | | debug("MRTG ReadData: Matching on '${matchvalue}in $matchperiod' and '${matchvalue}out $matchperiod'\n"); |
| 43 | | | |
| 44 | | | if (preg_match("/<\!-- ${matchvalue}in $matchperiod ([-+]?\d+\.?\d*) -->/", $buffer, $matches)) { $data[IN] = $matches[1] * 8; } |
| 45 | | | if (preg_match("/<\!-- ${matchvalue}out $matchperiod ([-+]?\d+\.?\d*) -->/", $buffer, $matches)) { $data[OUT] = $matches[1] * 8; } |
| 46 | | | } |
| 47 | | | fclose($fd); |
| 48 | | | # don't bother with the modified time if the target is a URL |
| 49 | | | if(! preg_match('/^[a-z]+:\/\//',$targetstring) ) |
| 50 | | | { |
| 51 | | | $data_time = filemtime($targetstring); |
| 52 | | | } |
| 53 | | | } |
| 54 | | | else |
| 55 | | | { |
| 56 | | | // some error code to go in here |
| 57 | | | debug ("MRTG ReadData: Couldn't open ($targetstring). \n"); |
| 58 | | | } |
| 59 | | | |
| 60 | | | if($swap==1) |
| 61 | | | { |
| 62 | | | debug("MRTG ReadData: Swapping IN and OUT\n"); |
| 63 | | | $t = $data[OUT]; |
| 64 | | | $data[OUT] = $data[IN]; |
| 65 | | | $data[IN] = $t; |
| 66 | | | } |
| 67 | | | |
| 68 | | | if($negate) |
| 69 | | | { |
| 70 | | | debug("MRTG ReadData: Negating values\n"); |
| 71 | | | $data[OUT] = -$data[OUT]; |
| 72 | | | $data[IN] = -$data[IN]; |
| 73 | | | } |
| 74 | | | |
| 75 | | | debug ("MRTG ReadData: Returning (".($data[IN]===NULL?'NULL':$data[IN]).",".($data[OUT]===NULL?'NULL':$data[OUT]).",$data_time)\n"); |
| 76 | | | |
| 77 | | | return( array($data[IN], $data[OUT], $data_time) ); |
| 78 | | | } |
| 79 | | | } |
| 80 | | | |
| 81 | | | // vim:ts=4:sw=4: |
| 82 | | | ?> |
