Commit 32dba1626ae897c4ddf79fa51719eaf418614835
1 parent
802f8727
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Add the PHP converter.
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| @@ -0,0 +1,70 @@ | @@ -0,0 +1,70 @@ | ||
| 1 | +<?php | ||
| 2 | + | ||
| 3 | +/** | ||
| 4 | +* Look for a NetCDF file in the local base dir, then convert it using the NetCDF to CDF Python converter. | ||
| 5 | +*/ | ||
| 6 | + | ||
| 7 | +$converterPath = './nc2cdf.py'; | ||
| 8 | +$tmpDir = '/tmp/'; | ||
| 9 | +$log_path = $tmpDir . 'get_cdf.log'; | ||
| 10 | + | ||
| 11 | +if (!$_GET['id']) { | ||
| 12 | + exit('INPUT ERROR'); | ||
| 13 | +} | ||
| 14 | + | ||
| 15 | +require_once './DDserverWeb_ini.php'; | ||
| 16 | + | ||
| 17 | +$name = preg_replace('/\..*/', '', $_GET['id']); // ie. ACE/SW/sw19980204 | ||
| 18 | +$inputFilePath = baseDir . $name . '.nc.gz'; // ie. /data/DDBASE/DATA/ACE/SW/sw19980204.nc.gz | ||
| 19 | +$outputFilePath = $tmpDir . str_replace('/', '_', $name) . '.cdf'; // ie. /tmp/ACE_SW_sw19980204.cdf | ||
| 20 | + | ||
| 21 | +function send_file($mime_type, $send_file_path) { | ||
| 22 | + header('Content-Description: File Transfer'); | ||
| 23 | + header('Content-Type: ' . $mime_type); | ||
| 24 | + header('Content-Disposition: attachment; filename="' . basename($send_file_path) . '"'); | ||
| 25 | + header('Expires: 0'); | ||
| 26 | + header('Cache-Control: must-revalidate'); | ||
| 27 | + header('Pragma: public'); | ||
| 28 | + header('Content-Length: ' . filesize($send_file_path)); | ||
| 29 | + readfile($send_file_path); | ||
| 30 | +} | ||
| 31 | + | ||
| 32 | +function error($log_msg) { | ||
| 33 | + global $inputFilePath, $log_path; | ||
| 34 | + file_put_contents($log_path, date("Y-m-d H:i:s") . " with id='" . $_GET['id'] . "': $log_msg\n", FILE_APPEND); | ||
| 35 | + // If the file can not be converted, return the NetCDF file. | ||
| 36 | + send_file('application/x-gzip', basename($inputFilePath)); | ||
| 37 | + exit; | ||
| 38 | +} | ||
| 39 | + | ||
| 40 | +if (!file_exists($inputFilePath)) { | ||
| 41 | + exit('NO SUCH FILE'); | ||
| 42 | +} | ||
| 43 | + | ||
| 44 | +if (!is_dir(pathinfo($outputFilePath, PATHINFO_DIRNAME))) { | ||
| 45 | + error("Can not create $outputFilePath because the folder does not exist."); | ||
| 46 | +} | ||
| 47 | + | ||
| 48 | +try { | ||
| 49 | + $res = shell_exec("$converterPath $inputFilePath $outputFilePath"); | ||
| 50 | +} catch (Exception $e) { | ||
| 51 | + error("Error on shell_exec():\n$e"); | ||
| 52 | +} | ||
| 53 | + | ||
| 54 | + | ||
| 55 | +// The converter is not supposed to output something if the file has been successfully converted | ||
| 56 | +if(trim($res) != '') { | ||
| 57 | + error("The converter said:\n$res"); | ||
| 58 | +} | ||
| 59 | + | ||
| 60 | +if(! file_exists($outputFilePath)) { | ||
| 61 | + error("The output file $outputFilePath has not been created."); | ||
| 62 | +} | ||
| 63 | + | ||
| 64 | +send_file('application/x-cdf', $outputFilePath); | ||
| 65 | + | ||
| 66 | +sleep(600); // Wait 10 minutes before to delete the converted file. | ||
| 67 | +unlink($outputFilePath); | ||
| 68 | + | ||
| 69 | +exit; | ||
| 70 | +?> |