3 +--------------------------------------------------------------------+
5 +--------------------------------------------------------------------+
6 | Copyright CiviCRM LLC (c) 2004-2018 |
7 +--------------------------------------------------------------------+
8 | This file is a part of CiviCRM. |
10 | CiviCRM is free software; you can copy, modify, and distribute it |
11 | under the terms of the GNU Affero General Public License |
12 | Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
14 | CiviCRM is distributed in the hope that it will be useful, but |
15 | WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
17 | See the GNU Affero General Public License for more details. |
19 | You should have received a copy of the GNU Affero General Public |
20 | License and the CiviCRM Licensing Exception along |
21 | with this program; if not, contact CiviCRM LLC |
22 | at info[AT]civicrm[DOT]org. If you have questions about the |
23 | GNU Affero General Public License or the licensing of CiviCRM, |
24 | see the CiviCRM license FAQ at http://civicrm.org/licensing |
25 +--------------------------------------------------------------------+
31 * @copyright CiviCRM LLC (c) 2004-2018
35 class CRM_Utils_Cache_Redis
implements CRM_Utils_Cache_Interface
{
37 use CRM_Utils_Cache_NaiveMultipleTrait
; // TODO Consider native implementation.
38 use CRM_Utils_Cache_NaiveHasTrait
; // TODO Native implementation
40 const DEFAULT_HOST
= 'localhost';
41 const DEFAULT_PORT
= 6379;
42 const DEFAULT_TIMEOUT
= 3600;
43 const DEFAULT_PREFIX
= '';
46 * The default timeout to use
50 protected $_timeout = self
::DEFAULT_TIMEOUT
;
53 * The prefix prepended to cache keys.
55 * If we are using the same redis instance for multiple CiviCRM
56 * installs, we must have a unique prefix for each install to prevent
57 * the keys from clobbering each other.
61 protected $_prefix = self
::DEFAULT_PREFIX
;
64 * The actual redis object
71 * Create a connection. If a connection already exists, re-use it.
73 * @param array $config
76 public static function connect($config) {
77 $host = isset($config['host']) ?
$config['host'] : self
::DEFAULT_HOST
;
78 $port = isset($config['port']) ?
$config['port'] : self
::DEFAULT_PORT
;
79 $pass = CRM_Utils_Constant
::value('CIVICRM_DB_CACHE_PASSWORD'); // Ugh.
80 $id = implode(':', ['connect', $host, $port /* $pass is constant */]);
81 if (!isset(Civi
::$statics[__CLASS__
][$id])) {
82 // Ideally, we'd track the connection in the service-container, but the
83 // cache connection is boot-critical.
85 if (!$redis->connect($host, $port)) {
86 // dont use fatal here since we can go in an infinite loop
87 echo 'Could not connect to redisd server';
88 CRM_Utils_System
::civiExit();
93 Civi
::$statics[__CLASS__
][$id] = $redis;
95 return Civi
::$statics[__CLASS__
][$id];
101 * @param array $config
102 * An array of configuration params.
104 * @return \CRM_Utils_Cache_Redis
106 public function __construct($config) {
107 if (isset($config['timeout'])) {
108 $this->_timeout
= $config['timeout'];
110 if (isset($config['prefix'])) {
111 $this->_prefix
= $config['prefix'];
114 $this->_cache
= self
::connect($config);
120 * @param null|int|\DateInterval $ttl
125 public function set($key, $value, $ttl = NULL) {
126 CRM_Utils_Cache
::assertValidKey($key);
127 if (is_int($ttl) && $ttl <= 0) {
128 return $this->delete($key);
130 $ttl = CRM_Utils_Date
::convertCacheTtl($ttl, self
::DEFAULT_TIMEOUT
);
131 if (!$this->_cache
->setex($this->_prefix
. $key, $ttl, serialize($value))) {
132 if (PHP_SAPI
=== 'cli' ||
(Civi\Core\Container
::isContainerBooted() && CRM_Core_Permission
::check('view debug output'))) {
133 throw new CRM_Utils_Cache_CacheException("Redis set ($key) failed: " . $this->_cache
->getLastError());
136 Civi
::log()->error("Redis set ($key) failed: " . $this->_cache
->getLastError());
137 throw new CRM_Utils_Cache_CacheException("Redis set ($key) failed");
146 * @param mixed $default
150 public function get($key, $default = NULL) {
151 CRM_Utils_Cache
::assertValidKey($key);
152 $result = $this->_cache
->get($this->_prefix
. $key);
153 return ($result === FALSE) ?
$default : unserialize($result);
161 public function delete($key) {
162 CRM_Utils_Cache
::assertValidKey($key);
163 $this->_cache
->delete($this->_prefix
. $key);
170 public function flush() {
171 // FIXME: Ideally, we'd map each prefix to a different 'hash' object in Redis,
172 // and this would be simpler. However, that needs to go in tandem with a
173 // more general rethink of cache expiration/TTL.
175 $keys = $this->_cache
->keys($this->_prefix
. '*');
176 $this->_cache
->del($keys);
180 public function clear() {
181 return $this->flush();