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<?php
/**
* The log rotation class.
*
* @package WP_Defender\Component\Logger
*/
namespace WP_Defender\Component\Logger;
use WP_Defender\Traits\IO;
/**
* Deals rotation log file naming & purging old logs.
*/
class Rotation_Logger implements Rotation_Logger_Interface {
use IO;
public const ROTATION_FREQUENCY = 7;
public const ROTATION_UNIT = 'day';
/**
* Class constructor to clear file status cache.
*/
public function __construct() {
clearstatcache();
}
/**
* Generate a new filename with date suffix.
*
* @param string $filename Filename which requires date suffix.
*
* @return string Formatted date suffixed file name.
*/
public function generate_file_name( $filename ) {
$file_parts = pathinfo( $filename );
$file_name = $file_parts['filename'] . gmdate( '-Y-m-d' );
if ( ! empty( $file_parts['extension'] ) ) {
$file_name .= '.' . $file_parts['extension'];
}
return $file_name;
}
/**
* Purge logs whose modified time exceeded the threshold limit.
*
* @param string $directory_path Pathname of the directory.
* @param int $count A period as integer value.
* @param string $unit A standard datetime relative format unit, like days or months.
*/
public function purge_old_log(
$directory_path = '',
$count = self::ROTATION_FREQUENCY,
$unit = self::ROTATION_UNIT
) {
$threshold_timestamp = strtotime( '-' . $count . $unit );
$directory_path = $directory_path ?: $this->get_tmp_path();
$iterator = new \GlobIterator( $directory_path . '/*.log' );
while ( $iterator->valid() ) {
if ( $iterator->getMTime() < $threshold_timestamp ) {
wp_delete_file( $iterator->getPathname() );
}
$iterator->next();
}
}
/**
* Invoke all init methods.
*/
public function init() {
/**
* Delete old logs rotationally.
*/
if ( ! wp_next_scheduled( 'wpdef_log_rotational_delete' ) ) {
wp_schedule_event( time(), 'daily', 'wpdef_log_rotational_delete' );
}
add_action( 'wpdef_log_rotational_delete', array( &$this, 'purge_old_log' ) );
}
}