Verzeichnisstruktur phpBB-3.3.15
- Veröffentlicht
- 28.08.2024
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redis.php
001 <?php
002 /**
003 *
004 * This file is part of the phpBB Forum Software package.
005 *
006 * @copyright (c) phpBB Limited <https://www.phpbb.com>
007 * @license GNU General Public License, version 2 (GPL-2.0)
008 *
009 * For full copyright and license information, please see
010 * the docs/CREDITS.txt file.
011 *
012 */
013
014 namespace phpbb\cache\driver;
015
016 if (!defined('PHPBB_ACM_REDIS_PORT'))
017 {
018 define('PHPBB_ACM_REDIS_PORT', 6379);
019 }
020
021 if (!defined('PHPBB_ACM_REDIS_HOST'))
022 {
023 define('PHPBB_ACM_REDIS_HOST', 'localhost');
024 }
025
026 /**
027 * ACM for Redis
028 *
029 * Compatible with the php extension phpredis available
030 * at https://github.com/nicolasff/phpredis
031 *
032 */
033 class redis extends \phpbb\cache\driver\memory
034 {
035 var $extension = 'redis';
036
037 var $redis;
038
039 /**
040 * Creates a redis cache driver.
041 *
042 * The following global constants affect operation:
043 *
044 * PHPBB_ACM_REDIS_HOST
045 * PHPBB_ACM_REDIS_PORT
046 * PHPBB_ACM_REDIS_PASSWORD
047 * PHPBB_ACM_REDIS_DB
048 *
049 * There are no publicly documented constructor parameters.
050 */
051 function __construct()
052 {
053 // Call the parent constructor
054 parent::__construct();
055
056 $this->redis = new \Redis();
057
058 $args = func_get_args();
059 if (!empty($args))
060 {
061 $ok = call_user_func_array(array($this->redis, 'connect'), $args);
062 }
063 else
064 {
065 $ok = $this->redis->connect(PHPBB_ACM_REDIS_HOST, PHPBB_ACM_REDIS_PORT);
066 }
067
068 if (!$ok)
069 {
070 trigger_error('Could not connect to redis server');
071 }
072
073 if (defined('PHPBB_ACM_REDIS_PASSWORD'))
074 {
075 if (!$this->redis->auth(PHPBB_ACM_REDIS_PASSWORD))
076 {
077 global $acm_type;
078
079 trigger_error("Incorrect password for the ACM module $acm_type.", E_USER_ERROR);
080 }
081 }
082
083 $this->redis->setOption(\Redis::OPT_SERIALIZER, \Redis::SERIALIZER_PHP);
084 $this->redis->setOption(\Redis::OPT_PREFIX, $this->key_prefix);
085
086 if (defined('PHPBB_ACM_REDIS_DB'))
087 {
088 if (!$this->redis->select(PHPBB_ACM_REDIS_DB))
089 {
090 global $acm_type;
091
092 trigger_error("Incorrect database for the ACM module $acm_type.", E_USER_ERROR);
093 }
094 }
095 }
096
097 /**
098 * {@inheritDoc}
099 */
100 function unload()
101 {
102 parent::unload();
103
104 $this->redis->close();
105 }
106
107 /**
108 * {@inheritDoc}
109 */
110 function purge()
111 {
112 $this->redis->flushDB();
113
114 parent::purge();
115 }
116
117 /**
118 * Fetch an item from the cache
119 *
120 * @access protected
121 * @param string $var Cache key
122 * @return mixed Cached data
123 */
124 function _read($var)
125 {
126 return $this->redis->get($var);
127 }
128
129 /**
130 * Store data in the cache
131 *
132 * For the info, see https://phpredis.github.io/phpredis/Redis.html#method_set,
133 * https://redis.io/docs/latest/commands/set/
134 * and https://redis.io/docs/latest/commands/expire/#appendix-redis-expires
135 *
136 * @access protected
137 * @param string $var Cache key
138 * @param mixed $data Data to store
139 * @param int $ttl Time-to-live of cached data
140 * @return bool True if the operation succeeded
141 */
142 function _write($var, $data, $ttl = 2592000)
143 {
144 return $this->redis->set($var, $data, ['EXAT' => time() + $ttl]);
145 }
146
147 /**
148 * Remove an item from the cache
149 *
150 * @access protected
151 * @param string $var Cache key
152 * @return bool True if the operation succeeded
153 */
154 function _delete($var)
155 {
156 if ($this->redis->delete($var) > 0)
157 {
158 return true;
159 }
160 return false;
161 }
162 }
163