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68 lines
2.8 KiB
68 lines
2.8 KiB
<?php
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/**
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* This deletes courses that were created but no file was ever uploaded, and
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* that were created previous to a specific date and last used previous to
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* another specific date (see $creation and $access)
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* Use this script with caution, as it will completely remove any trace of the
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* deleted courses.
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* Please note that this is not written with the inclusion of the concept ot
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* sessions. As such, it might delete courses but leave the course reference
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* in the session, which would cause issues.
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* Launch from the command line.
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* Usage: php delete_old_courses.php
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*/
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die('Remove the "die()" statement on line '.__LINE__.' to execute this script'.PHP_EOL);
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$creation = '2014-01-01';
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$access = '2014-07-01';
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require_once __DIR__.'/../../public/main/inc/global.inc.php';
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if (PHP_SAPI !== 'cli') {
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die('This script can only be executed from the command line');
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}
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$tableExercise = Database::get_main_table(TABLE_STATISTIC_TRACK_E_EXERCICES);
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$tableCourse = Database::get_main_table(TABLE_MAIN_COURSE);
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$sql = "SELECT
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id, code, directory, db_name, creation_date, last_visit
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FROM $tableCourse c
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WHERE creation_date < '$creation' AND last_visit < '$access'
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ORDER by code
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";
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echo $sql.PHP_EOL;
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$result = Database::query($sql);
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$items = Database::store_result($result, 'ASSOC');
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$total = 0;
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$count = 0;
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if (!empty($items)) {
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foreach ($items as $item) {
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$size = exec('du -sh '.__DIR__.'/../../courses/'.$item['directory']);
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echo "Course ".$item['code'].'('.$item['id'].') created on '.$item['creation_date'].' and last used on '.$item['last_visit'].' uses '.substr($size, 0, 8).PHP_EOL;
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// Check if it's 160K or 9.1M in size, which is the case for 'empty'
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// courses (created without or with example content)
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if (substr($size, 0, 4) == '160K' or substr($size, 0, 4) == '9,1M') {
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CourseManager::delete_course($item['code']);
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// The normal procedure moves the course directory to archive, so
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// delete it there as well
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echo('rm -rf '.__DIR__.'/../../archive/'.$item['directory'].'_*').PHP_EOL;
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exec('rm -rf '.__DIR__.'/../../archive/'.$item['directory'].'_*');
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// The normal procedure also created a database dump, but it is
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// stored in the course folder, so no issue there...
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if (substr($size, 0, 4) == '160K') {
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$total += 160;
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}
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if (substr($size, 0, 4) == '9,1M') {
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$total += 9100;
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}
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$count ++;
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if ($count%100 == 0) {
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// Print progressive information about the freed space
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echo '### Until now: '.$total.'K in '.$count.' courses'.PHP_EOL;
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}
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}
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}
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}
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// Print final information about the freed space
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echo $total.'K in '.$count.' courses'.PHP_EOL;
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