array(true, 'clearPageCache', array(), 'Cached HTML pages'), 'entity' => array(true, 'clearG2dataDir', array('cache/entity'), 'Albums and photo data'), 'module' => array(true, 'clearG2dataDir', array('cache/module'), 'Module settings'), 'theme' => array(true, 'clearG2dataDir', array('cache/theme'), 'Theme settings'), 'template' => array(true, 'clearG2dataDir', array('smarty/templates_c'), 'Smarty templates'), 'tmp' => array(true, 'clearG2dataDir', array('tmp'), 'Temporary directory'), 'repository' => array(true, 'clearG2dataDir', array('cache/repository'), 'Downloadable Plugin Cache'), 'log' => array(false, 'clearInstallUpgradeLogs', array(), 'Install/Upgrade log files'), 'derivative' => array( false, 'clearG2dataDir', array('cache/derivative'), 'Thumbnails and resizes (expensive to rebuild)') ); return $dirs; } function recursiveRmdir($dirname, &$status) { $count = 0; if (!file_exists($dirname)) { return $count; } if (!($fd = opendir($dirname))) { return $count; } while (($filename = readdir($fd)) !== false) { if (!strcmp($filename, '.') || !strcmp($filename, '..')) { continue; } $path = "$dirname/$filename"; if (is_dir($path)) { $count += recursiveRmdir($path, $status); } else { if (!@unlink($path)) { if (!@is_writeable($path)) { $status[] = array('error', "Permission denied removing file $path"); } else { $status[] = array('error', "Error removing $path"); } } else { $count++; } } } closedir($fd); if (!@rmdir($dirname)) { $status[] = array('error', "Unable to remove directory $dirname"); } else { $count++; } return $count; } function clearPageCache() { global $gallery; $storage =& $gallery->getStorage(); $ret = GalleryCoreApi::removeAllMapEntries('GalleryCacheMap'); if ($ret) { $status = array(array('error', 'Error deleting page cache!')); } else { $status = array(array('info', 'Successfully deleted page cache')); } $ret = $storage->checkPoint(); if ($ret) { $status[] = array('error', 'Error committing transaction!'); } return $status; } function clearG2DataDir($dir) { global $gallery; $path = $gallery->getConfig('data.gallery.base') . $dir; $status = array(array('info', "Deleting dir: $path")); $count = recursiveRmdir($path, $status); /* Commented this out because it's a little noisy */ /* $status[] = array('info', "Removed $count files and directories"); */ if (@mkdir($path)) { $status[] = array('info', "Recreating dir: $path"); } else { $status[] = array('error', "Unable to recreate dir: $path"); } return $status; } function clearInstallUpgradeLogs() { global $gallery; $path = $gallery->getConfig('data.gallery.base'); $status = array(); $count = 0; if ($fd = opendir($path)) { while (($filename = readdir($fd)) !== false) { if (preg_match('/^(install|upgrade)_[0-9a-f]+\.log$/', $filename) && is_file($path . $filename)) { if (@unlink($path . $filename)) { $count++; } else { $status[] = array('error', "Error removing $path$filename"); } } } closedir($fd); } $status[] = array('info', "Removed $count install/upgrade log files"); return $status; } $status = array(); if (isset($_REQUEST['clear']) && isset($_REQUEST['target'])) { require_once(dirname(__FILE__) . '/../../embed.php'); $ret = GalleryEmbed::init(array('fullInit' => false)); if ($ret) { /* Try to swallow the error, but define a session to make ::done() pass. */ global $gallery; $gallery->initEmptySession(); } $caches = getCaches(); foreach ($_REQUEST['target'] as $key => $ignored) { /* Make sure the dir is legit */ if (!array_key_exists($key, $caches)) { $status[] = array('error', "Ignoring illegal cache: $key"); continue; } $func = $caches[$key][1]; $args = $caches[$key][2]; $status = array_merge($status, call_user_func_array($func, $args)); } $ret = GalleryEmbed::done(); if ($ret) { $status[] = array('error', 'Error completing transaction!'); } } ?> Gallery Support | Cache Maintenance
Gallery » Support » Cache Maintenance

Gallery caches data on disk to increase performance. Occasionally these caches get out of date and need to be deleted. Anything in the cache can be deleted safely! Gallery will rebuild anything it needs.

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