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Edit File : object-cache.cls.php \| Size : 16.49 KB
<?php /** * The object cache class * * @since 1.8 * @package LiteSpeed * @subpackage LiteSpeed/inc * @author LiteSpeed Technologies <info@litespeedtech.com> / namespace LiteSpeed; defined('WPINC') \|\| exit(); require_once dirname(__DIR__) . '/autoload.php'; class Object_Cache extends Root { const O_DEBUG = 'debug'; const O_OBJECT = 'object'; const O_OBJECT_KIND = 'object-kind'; const O_OBJECT_HOST = 'object-host'; const O_OBJECT_PORT = 'object-port'; const O_OBJECT_LIFE = 'object-life'; const O_OBJECT_PERSISTENT = 'object-persistent'; const O_OBJECT_ADMIN = 'object-admin'; const O_OBJECT_TRANSIENTS = 'object-transients'; const O_OBJECT_DB_ID = 'object-db_id'; const O_OBJECT_USER = 'object-user'; const O_OBJECT_PSWD = 'object-pswd'; const O_OBJECT_GLOBAL_GROUPS = 'object-global_groups'; const O_OBJECT_NON_PERSISTENT_GROUPS = 'object-non_persistent_groups'; private $_conn; private $_cfg_debug; private $_cfg_enabled; private $_cfg_method; private $_cfg_host; private $_cfg_port; private $_cfg_life; private $_cfg_persistent; private $_cfg_admin; private $_cfg_transients; private $_cfg_db; private $_cfg_user; private $_cfg_pswd; private $_default_life = 360; private $_oc_driver = 'Memcached'; // Redis or Memcached private $_global_groups = array(); private $_non_persistent_groups = array(); /* * Init * * NOTE: this class may be included without initialized core * * @since 1.8 / public function __construct( $cfg = false ) { if ($cfg) { if (!is_array($cfg[Base::O_OBJECT_GLOBAL_GROUPS])) { $cfg[Base::O_OBJECT_GLOBAL_GROUPS] = explode("\n", $cfg[Base::O_OBJECT_GLOBAL_GROUPS]); } if (!is_array($cfg[Base::O_OBJECT_NON_PERSISTENT_GROUPS])) { $cfg[Base::O_OBJECT_NON_PERSISTENT_GROUPS] = explode("\n", $cfg[Base::O_OBJECT_NON_PERSISTENT_GROUPS]); } $this->_cfg_debug = $cfg[Base::O_DEBUG] ? $cfg[Base::O_DEBUG] : false; $this->_cfg_method = $cfg[Base::O_OBJECT_KIND] ? true : false; $this->_cfg_host = $cfg[Base::O_OBJECT_HOST]; $this->_cfg_port = $cfg[Base::O_OBJECT_PORT]; $this->_cfg_life = $cfg[Base::O_OBJECT_LIFE]; $this->_cfg_persistent = $cfg[Base::O_OBJECT_PERSISTENT]; $this->_cfg_admin = $cfg[Base::O_OBJECT_ADMIN]; $this->_cfg_transients = $cfg[Base::O_OBJECT_TRANSIENTS]; $this->_cfg_db = $cfg[Base::O_OBJECT_DB_ID]; $this->_cfg_user = $cfg[Base::O_OBJECT_USER]; $this->_cfg_pswd = $cfg[Base::O_OBJECT_PSWD]; $this->_global_groups = $cfg[Base::O_OBJECT_GLOBAL_GROUPS]; $this->_non_persistent_groups = $cfg[Base::O_OBJECT_NON_PERSISTENT_GROUPS]; if ($this->_cfg_method) { $this->_oc_driver = 'Redis'; } $this->_cfg_enabled = $cfg[Base::O_OBJECT] && class_exists($this->_oc_driver) && $this->_cfg_host; } // If OC is OFF, will hit here to init OC after conf initialized elseif (defined('LITESPEED_CONF_LOADED')) { $this->_cfg_debug = $this->conf(Base::O_DEBUG) ? $this->conf(Base::O_DEBUG) : false; $this->_cfg_method = $this->conf(Base::O_OBJECT_KIND) ? true : false; $this->_cfg_host = $this->conf(Base::O_OBJECT_HOST); $this->_cfg_port = $this->conf(Base::O_OBJECT_PORT); $this->_cfg_life = $this->conf(Base::O_OBJECT_LIFE); $this->_cfg_persistent = $this->conf(Base::O_OBJECT_PERSISTENT); $this->_cfg_admin = $this->conf(Base::O_OBJECT_ADMIN); $this->_cfg_transients = $this->conf(Base::O_OBJECT_TRANSIENTS); $this->_cfg_db = $this->conf(Base::O_OBJECT_DB_ID); $this->_cfg_user = $this->conf(Base::O_OBJECT_USER); $this->_cfg_pswd = $this->conf(Base::O_OBJECT_PSWD); $this->_global_groups = $this->conf(Base::O_OBJECT_GLOBAL_GROUPS); $this->_non_persistent_groups = $this->conf(Base::O_OBJECT_NON_PERSISTENT_GROUPS); if ($this->_cfg_method) { $this->_oc_driver = 'Redis'; } $this->_cfg_enabled = $this->conf(Base::O_OBJECT) && class_exists($this->_oc_driver) && $this->_cfg_host; } elseif (defined('self::CONF_FILE') && file_exists(WP_CONTENT_DIR . '/' . self::CONF_FILE)) { // Get cfg from _data_file // Use self::const to avoid loading more classes $cfg = \json_decode(file_get_contents(WP_CONTENT_DIR . '/' . self::CONF_FILE), true); if (!empty($cfg[self::O_OBJECT_HOST])) { $this->_cfg_debug = !empty($cfg[Base::O_DEBUG]) ? $cfg[Base::O_DEBUG] : false; $this->_cfg_method = !empty($cfg[self::O_OBJECT_KIND]) ? $cfg[self::O_OBJECT_KIND] : false; $this->_cfg_host = $cfg[self::O_OBJECT_HOST]; $this->_cfg_port = $cfg[self::O_OBJECT_PORT]; $this->_cfg_life = !empty($cfg[self::O_OBJECT_LIFE]) ? $cfg[self::O_OBJECT_LIFE] : $this->_default_life; $this->_cfg_persistent = !empty($cfg[self::O_OBJECT_PERSISTENT]) ? $cfg[self::O_OBJECT_PERSISTENT] : false; $this->_cfg_admin = !empty($cfg[self::O_OBJECT_ADMIN]) ? $cfg[self::O_OBJECT_ADMIN] : false; $this->_cfg_transients = !empty($cfg[self::O_OBJECT_TRANSIENTS]) ? $cfg[self::O_OBJECT_TRANSIENTS] : false; $this->_cfg_db = !empty($cfg[self::O_OBJECT_DB_ID]) ? $cfg[self::O_OBJECT_DB_ID] : 0; $this->_cfg_user = !empty($cfg[self::O_OBJECT_USER]) ? $cfg[self::O_OBJECT_USER] : ''; $this->_cfg_pswd = !empty($cfg[self::O_OBJECT_PSWD]) ? $cfg[self::O_OBJECT_PSWD] : ''; $this->_global_groups = !empty($cfg[self::O_OBJECT_GLOBAL_GROUPS]) ? $cfg[self::O_OBJECT_GLOBAL_GROUPS] : array(); $this->_non_persistent_groups = !empty($cfg[self::O_OBJECT_NON_PERSISTENT_GROUPS]) ? $cfg[self::O_OBJECT_NON_PERSISTENT_GROUPS] : array(); if ($this->_cfg_method) { $this->_oc_driver = 'Redis'; } $this->_cfg_enabled = class_exists($this->_oc_driver) && $this->_cfg_host; } else { $this->_cfg_enabled = false; } } else { $this->_cfg_enabled = false; } } /* * Add debug. * * @since 6.3 * @access private / private function debug_oc( $text, $show_error = false ) { if (defined('LSCWP_LOG')) { Debug2::debug($text); return; } if (!$show_error && $this->_cfg_debug != BASE::VAL_ON2) { return; } $LITESPEED_DATA_FOLDER = defined('LITESPEED_DATA_FOLDER') ? LITESPEED_DATA_FOLDER : 'litespeed'; $LSCWP_CONTENT_DIR = defined('LSCWP_CONTENT_DIR') ? LSCWP_CONTENT_DIR : WP_CONTENT_DIR; $LITESPEED_STATIC_DIR = $LSCWP_CONTENT_DIR . '/' . $LITESPEED_DATA_FOLDER; $log_path_prefix = $LITESPEED_STATIC_DIR . '/debug/'; $log_file = $log_path_prefix . Debug2::FilePath('debug'); if (file_exists($log_path_prefix . 'index.php') && file_exists($log_file)) { error_log(gmdate('m/d/y H:i:s') . ' - OC - ' . $text . PHP_EOL, 3, $log_file); } } /* * Get `Store Transients` setting value * * @since 1.8.3 * @access public / public function store_transients( $group ) { return $this->_cfg_transients && $this->_is_transients_group($group); } /* * Check if the group belongs to transients or not * * @since 1.8.3 * @access private / private function _is_transients_group( $group ) { return in_array($group, array( 'transient', 'site-transient' )); } /* * Update WP object cache file config * * @since 1.8 * @access public / public function update_file( $options ) { $changed = false; // NOTE: When included in oc.php, `LSCWP_DIR` will show undefined, so this must be assigned/generated when used $_oc_ori_file = LSCWP_DIR . 'lib/object-cache.php'; $_oc_wp_file = WP_CONTENT_DIR . '/object-cache.php'; // Update cls file if (!file_exists($_oc_wp_file) \|\| md5_file($_oc_wp_file) !== md5_file($_oc_ori_file)) { $this->debug_oc('copying object-cache.php file to ' . $_oc_wp_file); copy($_oc_ori_file, $_oc_wp_file); $changed = true; } /* * Clear object cache / if ($changed) { $this->_reconnect($options); } } /* * Remove object cache file * * @since 1.8.2 * @access public / public function del_file() { // NOTE: When included in oc.php, `LSCWP_DIR` will show undefined, so this must be assigned/generated when used $_oc_ori_file = LSCWP_DIR . 'lib/object-cache.php'; $_oc_wp_file = WP_CONTENT_DIR . '/object-cache.php'; if (file_exists($_oc_wp_file) && md5_file($_oc_wp_file) === md5_file($_oc_ori_file)) { $this->debug_oc('removing ' . $_oc_wp_file); unlink($_oc_wp_file); } } /* * Try to build connection * * @since 1.8 * @access public / public function test_connection() { return $this->_connect(); } /* * Force to connect with this setting * * @since 1.8 * @access private / private function _reconnect( $cfg ) { $this->debug_oc('Reconnecting'); if (isset($this->_conn)) { // error_log( 'Object: Quitting existing connection!' ); $this->debug_oc('Quitting existing connection'); $this->flush(); $this->_conn = null; $this->cls(false, true); } $cls = $this->cls(false, false, $cfg); $cls->_connect(); if (isset($cls->_conn)) { $cls->flush(); } } /* * Connect to Memcached/Redis server * * @since 1.8 * @access private / private function _connect() { if (isset($this->_conn)) { // error_log( 'Object: _connected' ); return true; } if (!class_exists($this->_oc_driver) \|\| !$this->_cfg_host) { return null; } if (defined('LITESPEED_OC_FAILURE')) { return false; } $this->debug_oc('Init ' . $this->_oc_driver . ' connection to ' . $this->_cfg_host . ':' . $this->_cfg_port); $failed = false; /* * Connect to Redis * * @since 1.8.1 * @see https://github.com/phpredis/phpredis/#example-1 / if ($this->_oc_driver == 'Redis') { set_error_handler('litespeed_exception_handler'); try { $this->_conn = new \Redis(); // error_log( 'Object: _connect Redis' ); if ($this->_cfg_persistent) { if ($this->_cfg_port) { $this->_conn->pconnect($this->_cfg_host, $this->_cfg_port); } else { $this->_conn->pconnect($this->_cfg_host); } } elseif ($this->_cfg_port) { $this->_conn->connect($this->_cfg_host, $this->_cfg_port); } else { $this->_conn->connect($this->_cfg_host); } if ($this->_cfg_pswd) { if ($this->_cfg_user) { $this->_conn->auth(array( $this->_cfg_user, $this->_cfg_pswd )); } else { $this->_conn->auth($this->_cfg_pswd); } } if ($this->_cfg_db) { $this->_conn->select($this->_cfg_db); } $res = $this->_conn->ping(); if ($res != '+PONG') { $failed = true; } } catch (\Exception $e) { $this->debug_oc('Redis connect exception: ' . $e->getMessage(), true); $failed = true; } catch (\ErrorException $e) { $this->debug_oc('Redis connect error: ' . $e->getMessage(), true); $failed = true; } restore_error_handler(); } else { // Connect to Memcached if ($this->_cfg_persistent) { $this->_conn = new \Memcached($this->_get_mem_id()); // Check memcached persistent connection if ($this->_validate_mem_server()) { // error_log( 'Object: _validate_mem_server' ); $this->debug_oc('Got persistent ' . $this->_oc_driver . ' connection'); return true; } $this->debug_oc('No persistent ' . $this->_oc_driver . ' server list!'); } else { // error_log( 'Object: new memcached!' ); $this->_conn = new \Memcached(); } $this->_conn->addServer($this->_cfg_host, (int) $this->_cfg_port); /* * Add SASL auth * * @since 1.8.1 * @since 2.9.6 Fixed SASL connection @see https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:lsmcd:new_sasl / if ($this->_cfg_user && $this->_cfg_pswd && method_exists($this->_conn, 'setSaslAuthData')) { $this->_conn->setOption(\Memcached::OPT_BINARY_PROTOCOL, true); $this->_conn->setOption(\Memcached::OPT_COMPRESSION, false); $this->_conn->setSaslAuthData($this->_cfg_user, $this->_cfg_pswd); } // Check connection if (!$this->_validate_mem_server()) { $failed = true; } } // If failed to connect if ($failed) { $this->debug_oc('❌ Failed to connect ' . $this->_oc_driver . ' server!', true); $this->_conn = null; $this->_cfg_enabled = false; !defined('LITESPEED_OC_FAILURE') && define('LITESPEED_OC_FAILURE', true); // error_log( 'Object: false!' ); return false; } $this->debug_oc('Connected'); return true; } /* * Check if the connected memcached host is the one in cfg * * @since 1.8 * @access private / private function _validate_mem_server() { $mem_list = $this->_conn->getStats(); if (empty($mem_list)) { return false; } foreach ($mem_list as $k => $v) { if (substr($k, 0, strlen($this->_cfg_host)) != $this->_cfg_host) { continue; } if (!empty($v['pid']) \|\| !empty($v['curr_connections'])) { return true; } } return false; } /* * Get memcached unique id to be used for connecting * * @since 1.8 * @access private / private function _get_mem_id() { $mem_id = 'litespeed'; if (is_multisite()) { $mem_id .= '_' . get_current_blog_id(); } return $mem_id; } /* * Get cache * * @since 1.8 * @access public / public function get( $key ) { if (!$this->_cfg_enabled) { return null; } if (!$this->_can_cache()) { return null; } if (!$this->_connect()) { return null; } $res = $this->_conn->get($key); return $res; } /* * Set cache * * @since 1.8 * @access public / public function set( $key, $data, $expire ) { if (!$this->_cfg_enabled) { return null; } /* * To fix the Cloud callback cached as its frontend call but the hash is generated in backend * Bug found by Stan at Jan/10/2020 / // if ( ! $this->_can_cache() ) { // return null; // } if (!$this->_connect()) { return null; } $ttl = $expire ?: $this->_cfg_life; if ($this->_oc_driver == 'Redis') { try { $res = $this->_conn->setEx($key, $ttl, $data); } catch (\RedisException $ex) { $res = false; $msg = sprintf(__('Redis encountered a fatal error: %1$s (code: %2$d)', 'litespeed-cache'), $ex->getMessage(), $ex->getCode()); $this->debug_oc($msg); Admin_Display::error($msg); } } else { $res = $this->_conn->set($key, $data, $ttl); } return $res; } /* * Check if can cache or not * * @since 1.8 * @access private / private function _can_cache() { if (!$this->_cfg_admin && defined('WP_ADMIN')) { return false; } return true; } /* * Delete cache * * @since 1.8 * @access public / public function delete( $key ) { if (!$this->_cfg_enabled) { return null; } if (!$this->_connect()) { return null; } if ($this->_oc_driver == 'Redis') { $res = $this->_conn->del($key); } else { $res = $this->_conn->delete($key); } return (bool) $res; } /* * Clear all cache * * @since 1.8 * @access public / public function flush() { if (!$this->_cfg_enabled) { $this->debug_oc('bypass flushing'); return null; } if (!$this->_connect()) { return null; } $this->debug_oc('flush!'); if ($this->_oc_driver == 'Redis') { $res = $this->_conn->flushDb(); } else { $res = $this->_conn->flush(); $this->_conn->resetServerList(); } return $res; } /* * Add global groups * * @since 1.8 * @access public / public function add_global_groups( $groups ) { if (!is_array($groups)) { $groups = array( $groups ); } $this->_global_groups = array_merge($this->_global_groups, $groups); $this->_global_groups = array_unique($this->_global_groups); } /* * Check if is in global groups or not * * @since 1.8 * @access public / public function is_global( $group ) { return in_array($group, $this->_global_groups); } /* * Add non persistent groups * * @since 1.8 * @access public / public function add_non_persistent_groups( $groups ) { if (!is_array($groups)) { $groups = array( $groups ); } $this->_non_persistent_groups = array_merge($this->_non_persistent_groups, $groups); $this->_non_persistent_groups = array_unique($this->_non_persistent_groups); } /* * Check if is in non persistent groups or not * * @since 1.8 * @access public */ public function is_non_persistent( $group ) { return in_array($group, $this->_non_persistent_groups); } } Back

Edit File : object-cache.cls.php | Size : 16.49 KB

<?php

/**
 * The object cache class
 *
 * @since       1.8
 * @package     LiteSpeed
 * @subpackage  LiteSpeed/inc
 * @author      LiteSpeed Technologies <info@litespeedtech.com>
 */

namespace LiteSpeed;

defined('WPINC') || exit();

require_once dirname(__DIR__) . '/autoload.php';

class Object_Cache extends Root {

const O_DEBUG                        = 'debug';
	const O_OBJECT                       = 'object';
	const O_OBJECT_KIND                  = 'object-kind';
	const O_OBJECT_HOST                  = 'object-host';
	const O_OBJECT_PORT                  = 'object-port';
	const O_OBJECT_LIFE                  = 'object-life';
	const O_OBJECT_PERSISTENT            = 'object-persistent';
	const O_OBJECT_ADMIN                 = 'object-admin';
	const O_OBJECT_TRANSIENTS            = 'object-transients';
	const O_OBJECT_DB_ID                 = 'object-db_id';
	const O_OBJECT_USER                  = 'object-user';
	const O_OBJECT_PSWD                  = 'object-pswd';
	const O_OBJECT_GLOBAL_GROUPS         = 'object-global_groups';
	const O_OBJECT_NON_PERSISTENT_GROUPS = 'object-non_persistent_groups';

private $_conn;
	private $_cfg_debug;
	private $_cfg_enabled;
	private $_cfg_method;
	private $_cfg_host;
	private $_cfg_port;
	private $_cfg_life;
	private $_cfg_persistent;
	private $_cfg_admin;
	private $_cfg_transients;
	private $_cfg_db;
	private $_cfg_user;
	private $_cfg_pswd;
	private $_default_life = 360;

private $_oc_driver = 'Memcached'; // Redis or Memcached

private $_global_groups         = array();
	private $_non_persistent_groups = array();

/**
	 * Init
	 *
	 * NOTE: this class may be included without initialized  core
	 *
	 * @since  1.8
	 */
	public function __construct( $cfg = false ) {
		if ($cfg) {
			if (!is_array($cfg[Base::O_OBJECT_GLOBAL_GROUPS])) {
				$cfg[Base::O_OBJECT_GLOBAL_GROUPS] = explode("\n", $cfg[Base::O_OBJECT_GLOBAL_GROUPS]);
			}
			if (!is_array($cfg[Base::O_OBJECT_NON_PERSISTENT_GROUPS])) {
				$cfg[Base::O_OBJECT_NON_PERSISTENT_GROUPS] = explode("\n", $cfg[Base::O_OBJECT_NON_PERSISTENT_GROUPS]);
			}
			$this->_cfg_debug             = $cfg[Base::O_DEBUG] ? $cfg[Base::O_DEBUG] : false;
			$this->_cfg_method            = $cfg[Base::O_OBJECT_KIND] ? true : false;
			$this->_cfg_host              = $cfg[Base::O_OBJECT_HOST];
			$this->_cfg_port              = $cfg[Base::O_OBJECT_PORT];
			$this->_cfg_life              = $cfg[Base::O_OBJECT_LIFE];
			$this->_cfg_persistent        = $cfg[Base::O_OBJECT_PERSISTENT];
			$this->_cfg_admin             = $cfg[Base::O_OBJECT_ADMIN];
			$this->_cfg_transients        = $cfg[Base::O_OBJECT_TRANSIENTS];
			$this->_cfg_db                = $cfg[Base::O_OBJECT_DB_ID];
			$this->_cfg_user              = $cfg[Base::O_OBJECT_USER];
			$this->_cfg_pswd              = $cfg[Base::O_OBJECT_PSWD];
			$this->_global_groups         = $cfg[Base::O_OBJECT_GLOBAL_GROUPS];
			$this->_non_persistent_groups = $cfg[Base::O_OBJECT_NON_PERSISTENT_GROUPS];

if ($this->_cfg_method) {
				$this->_oc_driver = 'Redis';
			}
			$this->_cfg_enabled = $cfg[Base::O_OBJECT] && class_exists($this->_oc_driver) && $this->_cfg_host;
		}
		// If OC is OFF, will hit here to init OC after conf initialized
		elseif (defined('LITESPEED_CONF_LOADED')) {
			$this->_cfg_debug             = $this->conf(Base::O_DEBUG) ? $this->conf(Base::O_DEBUG) : false;
			$this->_cfg_method            = $this->conf(Base::O_OBJECT_KIND) ? true : false;
			$this->_cfg_host              = $this->conf(Base::O_OBJECT_HOST);
			$this->_cfg_port              = $this->conf(Base::O_OBJECT_PORT);
			$this->_cfg_life              = $this->conf(Base::O_OBJECT_LIFE);
			$this->_cfg_persistent        = $this->conf(Base::O_OBJECT_PERSISTENT);
			$this->_cfg_admin             = $this->conf(Base::O_OBJECT_ADMIN);
			$this->_cfg_transients        = $this->conf(Base::O_OBJECT_TRANSIENTS);
			$this->_cfg_db                = $this->conf(Base::O_OBJECT_DB_ID);
			$this->_cfg_user              = $this->conf(Base::O_OBJECT_USER);
			$this->_cfg_pswd              = $this->conf(Base::O_OBJECT_PSWD);
			$this->_global_groups         = $this->conf(Base::O_OBJECT_GLOBAL_GROUPS);
			$this->_non_persistent_groups = $this->conf(Base::O_OBJECT_NON_PERSISTENT_GROUPS);

if ($this->_cfg_method) {
				$this->_oc_driver = 'Redis';
			}
			$this->_cfg_enabled = $this->conf(Base::O_OBJECT) && class_exists($this->_oc_driver) && $this->_cfg_host;
		} elseif (defined('self::CONF_FILE') && file_exists(WP_CONTENT_DIR . '/' . self::CONF_FILE)) {
			// Get cfg from _data_file
			// Use self::const to avoid loading more classes
			$cfg = \json_decode(file_get_contents(WP_CONTENT_DIR . '/' . self::CONF_FILE), true);
			if (!empty($cfg[self::O_OBJECT_HOST])) {
				$this->_cfg_debug             = !empty($cfg[Base::O_DEBUG]) ? $cfg[Base::O_DEBUG] : false;
				$this->_cfg_method            = !empty($cfg[self::O_OBJECT_KIND]) ? $cfg[self::O_OBJECT_KIND] : false;
				$this->_cfg_host              = $cfg[self::O_OBJECT_HOST];
				$this->_cfg_port              = $cfg[self::O_OBJECT_PORT];
				$this->_cfg_life              = !empty($cfg[self::O_OBJECT_LIFE]) ? $cfg[self::O_OBJECT_LIFE] : $this->_default_life;
				$this->_cfg_persistent        = !empty($cfg[self::O_OBJECT_PERSISTENT]) ? $cfg[self::O_OBJECT_PERSISTENT] : false;
				$this->_cfg_admin             = !empty($cfg[self::O_OBJECT_ADMIN]) ? $cfg[self::O_OBJECT_ADMIN] : false;
				$this->_cfg_transients        = !empty($cfg[self::O_OBJECT_TRANSIENTS]) ? $cfg[self::O_OBJECT_TRANSIENTS] : false;
				$this->_cfg_db                = !empty($cfg[self::O_OBJECT_DB_ID]) ? $cfg[self::O_OBJECT_DB_ID] : 0;
				$this->_cfg_user              = !empty($cfg[self::O_OBJECT_USER]) ? $cfg[self::O_OBJECT_USER] : '';
				$this->_cfg_pswd              = !empty($cfg[self::O_OBJECT_PSWD]) ? $cfg[self::O_OBJECT_PSWD] : '';
				$this->_global_groups         = !empty($cfg[self::O_OBJECT_GLOBAL_GROUPS]) ? $cfg[self::O_OBJECT_GLOBAL_GROUPS] : array();
				$this->_non_persistent_groups = !empty($cfg[self::O_OBJECT_NON_PERSISTENT_GROUPS]) ? $cfg[self::O_OBJECT_NON_PERSISTENT_GROUPS] : array();

if ($this->_cfg_method) {
					$this->_oc_driver = 'Redis';
				}
				$this->_cfg_enabled = class_exists($this->_oc_driver) && $this->_cfg_host;
			} else {
				$this->_cfg_enabled = false;
			}
		} else {
			$this->_cfg_enabled = false;
		}
	}

/**
	 * Add debug.
	 *
	 * @since  6.3
	 * @access private
	 */
	private function debug_oc( $text, $show_error = false ) {
		if (defined('LSCWP_LOG')) {
			Debug2::debug($text);

return;
		}

if (!$show_error && $this->_cfg_debug != BASE::VAL_ON2) {
			return;
		}

$LITESPEED_DATA_FOLDER = defined('LITESPEED_DATA_FOLDER') ? LITESPEED_DATA_FOLDER : 'litespeed';
		$LSCWP_CONTENT_DIR     = defined('LSCWP_CONTENT_DIR') ? LSCWP_CONTENT_DIR : WP_CONTENT_DIR;
		$LITESPEED_STATIC_DIR  = $LSCWP_CONTENT_DIR . '/' . $LITESPEED_DATA_FOLDER;
		$log_path_prefix       = $LITESPEED_STATIC_DIR . '/debug/';
		$log_file              = $log_path_prefix . Debug2::FilePath('debug');

if (file_exists($log_path_prefix . 'index.php') && file_exists($log_file)) {
			error_log(gmdate('m/d/y H:i:s') . ' - OC - ' . $text . PHP_EOL, 3, $log_file);
		}
	}

/**
	 * Get `Store Transients` setting value
	 *
	 * @since  1.8.3
	 * @access public
	 */
	public function store_transients( $group ) {
		return $this->_cfg_transients && $this->_is_transients_group($group);
	}

/**
	 * Check if the group belongs to transients or not
	 *
	 * @since  1.8.3
	 * @access private
	 */
	private function _is_transients_group( $group ) {
		return in_array($group, array( 'transient', 'site-transient' ));
	}

/**
	 * Update WP object cache file config
	 *
	 * @since  1.8
	 * @access public
	 */
	public function update_file( $options ) {
		$changed = false;

// NOTE: When included in oc.php, `LSCWP_DIR` will show undefined, so this must be assigned/generated when used
		$_oc_ori_file = LSCWP_DIR . 'lib/object-cache.php';
		$_oc_wp_file  = WP_CONTENT_DIR . '/object-cache.php';

// Update cls file
		if (!file_exists($_oc_wp_file) || md5_file($_oc_wp_file) !== md5_file($_oc_ori_file)) {
			$this->debug_oc('copying object-cache.php file to ' . $_oc_wp_file);
			copy($_oc_ori_file, $_oc_wp_file);

$changed = true;
		}

/**
		 * Clear object cache
		 */
		if ($changed) {
			$this->_reconnect($options);
		}
	}

/**
	 * Remove object cache file
	 *
	 * @since  1.8.2
	 * @access public
	 */
	public function del_file() {
		// NOTE: When included in oc.php, `LSCWP_DIR` will show undefined, so this must be assigned/generated when used
		$_oc_ori_file = LSCWP_DIR . 'lib/object-cache.php';
		$_oc_wp_file  = WP_CONTENT_DIR . '/object-cache.php';

if (file_exists($_oc_wp_file) && md5_file($_oc_wp_file) === md5_file($_oc_ori_file)) {
			$this->debug_oc('removing ' . $_oc_wp_file);
			unlink($_oc_wp_file);
		}
	}

/**
	 * Try to build connection
	 *
	 * @since  1.8
	 * @access public
	 */
	public function test_connection() {
		return $this->_connect();
	}

/**
	 * Force to connect with this setting
	 *
	 * @since  1.8
	 * @access private
	 */
	private function _reconnect( $cfg ) {
		$this->debug_oc('Reconnecting');
		if (isset($this->_conn)) {
			// error_log( 'Object: Quitting existing connection!' );
			$this->debug_oc('Quitting existing connection');
			$this->flush();
			$this->_conn = null;
			$this->cls(false, true);
		}

$cls = $this->cls(false, false, $cfg);
		$cls->_connect();
		if (isset($cls->_conn)) {
			$cls->flush();
		}
	}

/**
	 * Connect to Memcached/Redis server
	 *
	 * @since  1.8
	 * @access private
	 */
	private function _connect() {
		if (isset($this->_conn)) {
			// error_log( 'Object: _connected' );
			return true;
		}

if (!class_exists($this->_oc_driver) || !$this->_cfg_host) {
			return null;
		}

if (defined('LITESPEED_OC_FAILURE')) {
			return false;
		}

$this->debug_oc('Init ' . $this->_oc_driver . ' connection to ' . $this->_cfg_host . ':' . $this->_cfg_port);

$failed = false;
		/**
		 * Connect to Redis
		 *
		 * @since  1.8.1
		 * @see https://github.com/phpredis/phpredis/#example-1
		 */
		if ($this->_oc_driver == 'Redis') {
			set_error_handler('litespeed_exception_handler');
			try {
				$this->_conn = new \Redis();
				// error_log( 'Object: _connect Redis' );

if ($this->_cfg_persistent) {
					if ($this->_cfg_port) {
						$this->_conn->pconnect($this->_cfg_host, $this->_cfg_port);
					} else {
						$this->_conn->pconnect($this->_cfg_host);
					}
				} elseif ($this->_cfg_port) {
					$this->_conn->connect($this->_cfg_host, $this->_cfg_port);
				} else {
					$this->_conn->connect($this->_cfg_host);
				}

if ($this->_cfg_pswd) {
					if ($this->_cfg_user) {
						$this->_conn->auth(array( $this->_cfg_user, $this->_cfg_pswd ));
					} else {
						$this->_conn->auth($this->_cfg_pswd);
					}
				}

if ($this->_cfg_db) {
					$this->_conn->select($this->_cfg_db);
				}

$res = $this->_conn->ping();

if ($res != '+PONG') {
					$failed = true;
				}
			} catch (\Exception $e) {
				$this->debug_oc('Redis connect exception: ' . $e->getMessage(), true);
				$failed = true;
			} catch (\ErrorException $e) {
				$this->debug_oc('Redis connect error: ' . $e->getMessage(), true);
				$failed = true;
			}
			restore_error_handler();
		} else {
			// Connect to Memcached
			if ($this->_cfg_persistent) {
				$this->_conn = new \Memcached($this->_get_mem_id());

// Check memcached persistent connection
				if ($this->_validate_mem_server()) {
					// error_log( 'Object: _validate_mem_server' );
					$this->debug_oc('Got persistent ' . $this->_oc_driver . ' connection');
					return true;
				}

$this->debug_oc('No persistent ' . $this->_oc_driver . ' server list!');
			} else {
				// error_log( 'Object: new memcached!' );
				$this->_conn = new \Memcached();
			}

$this->_conn->addServer($this->_cfg_host, (int) $this->_cfg_port);

/**
			 * Add SASL auth
			 *
			 * @since  1.8.1
			 * @since  2.9.6 Fixed SASL connection @see https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:lsmcd:new_sasl
			 */
			if ($this->_cfg_user && $this->_cfg_pswd && method_exists($this->_conn, 'setSaslAuthData')) {
				$this->_conn->setOption(\Memcached::OPT_BINARY_PROTOCOL, true);
				$this->_conn->setOption(\Memcached::OPT_COMPRESSION, false);
				$this->_conn->setSaslAuthData($this->_cfg_user, $this->_cfg_pswd);
			}

// Check connection
			if (!$this->_validate_mem_server()) {
				$failed = true;
			}
		}

// If failed to connect
		if ($failed) {
			$this->debug_oc('❌ Failed to connect ' . $this->_oc_driver . ' server!', true);
			$this->_conn        = null;
			$this->_cfg_enabled = false;
			!defined('LITESPEED_OC_FAILURE') && define('LITESPEED_OC_FAILURE', true);
			// error_log( 'Object: false!' );
			return false;
		}

$this->debug_oc('Connected');

return true;
	}

/**
	 * Check if the connected memcached host is the one in cfg
	 *
	 * @since  1.8
	 * @access private
	 */
	private function _validate_mem_server() {
		$mem_list = $this->_conn->getStats();
		if (empty($mem_list)) {
			return false;
		}

foreach ($mem_list as $k => $v) {
			if (substr($k, 0, strlen($this->_cfg_host)) != $this->_cfg_host) {
				continue;
			}
			if (!empty($v['pid']) || !empty($v['curr_connections'])) {
				return true;
			}
		}

return false;
	}

/**
	 * Get memcached unique id to be used for connecting
	 *
	 * @since  1.8
	 * @access private
	 */
	private function _get_mem_id() {
		$mem_id = 'litespeed';
		if (is_multisite()) {
			$mem_id .= '_' . get_current_blog_id();
		}

return $mem_id;
	}

/**
	 * Get cache
	 *
	 * @since  1.8
	 * @access public
	 */
	public function get( $key ) {
		if (!$this->_cfg_enabled) {
			return null;
		}

if (!$this->_can_cache()) {
			return null;
		}

if (!$this->_connect()) {
			return null;
		}

$res = $this->_conn->get($key);

return $res;
	}

/**
	 * Set cache
	 *
	 * @since  1.8
	 * @access public
	 */
	public function set( $key, $data, $expire ) {
		if (!$this->_cfg_enabled) {
			return null;
		}

/**
		 * To fix the Cloud callback cached as its frontend call but the hash is generated in backend
		 * Bug found by Stan at Jan/10/2020
		 */
		// if ( ! $this->_can_cache() ) {
		// return null;
		// }

if (!$this->_connect()) {
			return null;
		}
		$ttl = $expire ?: $this->_cfg_life;

if ($this->_oc_driver == 'Redis') {
			try {
				$res = $this->_conn->setEx($key, $ttl, $data);
			} catch (\RedisException $ex) {
				$res = false;
				$msg = sprintf(__('Redis encountered a fatal error: %1$s (code: %2$d)', 'litespeed-cache'), $ex->getMessage(), $ex->getCode());
				$this->debug_oc($msg);
				Admin_Display::error($msg);
			}
		} else {
			$res = $this->_conn->set($key, $data, $ttl);
		}

return $res;
	}

/**
	 * Check if can cache or not
	 *
	 * @since  1.8
	 * @access private
	 */
	private function _can_cache() {
		if (!$this->_cfg_admin && defined('WP_ADMIN')) {
			return false;
		}
		return true;
	}

/**
	 * Delete cache
	 *
	 * @since  1.8
	 * @access public
	 */
	public function delete( $key ) {
		if (!$this->_cfg_enabled) {
			return null;
		}

if (!$this->_connect()) {
			return null;
		}

if ($this->_oc_driver == 'Redis') {
			$res = $this->_conn->del($key);
		} else {
			$res = $this->_conn->delete($key);
		}

return (bool) $res;
	}

/**
	 * Clear all cache
	 *
	 * @since  1.8
	 * @access public
	 */
	public function flush() {
		if (!$this->_cfg_enabled) {
			$this->debug_oc('bypass flushing');
			return null;
		}

if (!$this->_connect()) {
			return null;
		}

$this->debug_oc('flush!');

if ($this->_oc_driver == 'Redis') {
			$res = $this->_conn->flushDb();
		} else {
			$res = $this->_conn->flush();
			$this->_conn->resetServerList();
		}

return $res;
	}

/**
	 * Add global groups
	 *
	 * @since 1.8
	 * @access public
	 */
	public function add_global_groups( $groups ) {
		if (!is_array($groups)) {
			$groups = array( $groups );
		}

$this->_global_groups = array_merge($this->_global_groups, $groups);
		$this->_global_groups = array_unique($this->_global_groups);
	}

/**
	 * Check if is in global groups or not
	 *
	 * @since 1.8
	 * @access public
	 */
	public function is_global( $group ) {
		return in_array($group, $this->_global_groups);
	}

/**
	 * Add non persistent groups
	 *
	 * @since 1.8
	 * @access public
	 */
	public function add_non_persistent_groups( $groups ) {
		if (!is_array($groups)) {
			$groups = array( $groups );
		}

$this->_non_persistent_groups = array_merge($this->_non_persistent_groups, $groups);
		$this->_non_persistent_groups = array_unique($this->_non_persistent_groups);
	}

/**
	 * Check if is in non persistent groups or not
	 *
	 * @since 1.8
	 * @access public
	 */
	public function is_non_persistent( $group ) {
		return in_array($group, $this->_non_persistent_groups);
	}
}

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