/**
* Execute log rotation
*
* @param string $fileName
* @return void
*/
private static function _rotate($fileName)
{
$dirPath = PathManager::getLogDirectory();
// get file list in log directory
$dir = dir($dirPath);
$generations = array();
while ($content = $dir->read()) {
$path = sprintf("%s/%s", $dirPath, $content);
if (!is_file($path)) {
// ignore directory
continue;
}
$info = pathinfo($path);
$name = $info['basename'];
if (!preg_match(sprintf('|^%s(\\.[0-9]+)?$|', $fileName), $name)) {
// ignore not match log name
continue;
}
$generation = trim(str_replace($fileName, '', $name), '.');
if ($generation == '') {
$generation = 0;
}
if ($generation >= self::$_generation - 1) {
// delete if rotate num is over generation setting
@unlink($path);
} else {
$generations[] = $generation;
}
}
// increment log extension as rotate num
rsort($generations);
foreach ($generations as $gene) {
$oldName = sprintf('%s/%s.%s', $dirPath, $fileName, $gene);
$newName = sprintf('%s/%s.%s', $dirPath, $fileName, $gene + 1);
@rename($oldName, $newName);
}
$filePath = sprintf("%s/%s", $dirPath, $fileName);
@rename($filePath, $filePath . '.1');
$dir->close();
}
