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59e56021 H |
1 | <?php |
2 | /* | |
3 | +--------------------------------------------------------------------+ | |
bc77d7c0 | 4 | | Copyright CiviCRM LLC. All rights reserved. | |
59e56021 | 5 | | | |
bc77d7c0 TO |
6 | | This work is published under the GNU AGPLv3 license with some | |
7 | | permitted exceptions and without any warranty. For full license | | |
8 | | and copyright information, see https://civicrm.org/licensing | | |
59e56021 | 9 | +--------------------------------------------------------------------+ |
4ca97b71 | 10 | */ |
59e56021 H |
11 | |
12 | /** | |
13 | * | |
14 | * @package CRM | |
ca5cec67 | 15 | * @copyright CiviCRM LLC https://civicrm.org/licensing |
59e56021 H |
16 | * $Id$ |
17 | * | |
18 | */ | |
19 | class CRM_Utils_Cache_Redis implements CRM_Utils_Cache_Interface { | |
0d64c8fa | 20 | |
6714d8d2 SL |
21 | // TODO Consider native implementation. |
22 | use CRM_Utils_Cache_NaiveMultipleTrait; | |
23 | // TODO Native implementation | |
24 | use CRM_Utils_Cache_NaiveHasTrait; | |
0d64c8fa | 25 | |
59e56021 | 26 | const DEFAULT_HOST = 'localhost'; |
9d2f1acb | 27 | const DEFAULT_PORT = 6379; |
59e56021 H |
28 | const DEFAULT_TIMEOUT = 3600; |
29 | const DEFAULT_PREFIX = ''; | |
30 | ||
59e56021 H |
31 | /** |
32 | * The default timeout to use | |
33 | * | |
34 | * @var int | |
35 | */ | |
36 | protected $_timeout = self::DEFAULT_TIMEOUT; | |
37 | ||
38 | /** | |
39 | * The prefix prepended to cache keys. | |
40 | * | |
41 | * If we are using the same redis instance for multiple CiviCRM | |
42 | * installs, we must have a unique prefix for each install to prevent | |
43 | * the keys from clobbering each other. | |
44 | * | |
45 | * @var string | |
46 | */ | |
47 | protected $_prefix = self::DEFAULT_PREFIX; | |
48 | ||
49 | /** | |
50 | * The actual redis object | |
51 | * | |
6db6aac0 | 52 | * @var Redis |
59e56021 H |
53 | */ |
54 | protected $_cache; | |
55 | ||
9a38d080 TO |
56 | /** |
57 | * Create a connection. If a connection already exists, re-use it. | |
58 | * | |
59 | * @param array $config | |
60 | * @return Redis | |
61 | */ | |
62 | public static function connect($config) { | |
63 | $host = isset($config['host']) ? $config['host'] : self::DEFAULT_HOST; | |
64 | $port = isset($config['port']) ? $config['port'] : self::DEFAULT_PORT; | |
6714d8d2 SL |
65 | // Ugh. |
66 | $pass = CRM_Utils_Constant::value('CIVICRM_DB_CACHE_PASSWORD'); | |
9a38d080 TO |
67 | $id = implode(':', ['connect', $host, $port /* $pass is constant */]); |
68 | if (!isset(Civi::$statics[__CLASS__][$id])) { | |
69 | // Ideally, we'd track the connection in the service-container, but the | |
70 | // cache connection is boot-critical. | |
71 | $redis = new Redis(); | |
72 | if (!$redis->connect($host, $port)) { | |
73 | // dont use fatal here since we can go in an infinite loop | |
74 | echo 'Could not connect to redisd server'; | |
75 | CRM_Utils_System::civiExit(); | |
76 | } | |
77 | if ($pass) { | |
78 | $redis->auth($pass); | |
79 | } | |
80 | Civi::$statics[__CLASS__][$id] = $redis; | |
81 | } | |
82 | return Civi::$statics[__CLASS__][$id]; | |
83 | } | |
84 | ||
59e56021 H |
85 | /** |
86 | * Constructor | |
87 | * | |
4ca97b71 H |
88 | * @param array $config |
89 | * An array of configuration params. | |
59e56021 H |
90 | * |
91 | * @return \CRM_Utils_Cache_Redis | |
92 | */ | |
93 | public function __construct($config) { | |
59e56021 H |
94 | if (isset($config['timeout'])) { |
95 | $this->_timeout = $config['timeout']; | |
96 | } | |
97 | if (isset($config['prefix'])) { | |
98 | $this->_prefix = $config['prefix']; | |
99 | } | |
100 | ||
9a38d080 | 101 | $this->_cache = self::connect($config); |
59e56021 H |
102 | } |
103 | ||
104 | /** | |
105 | * @param $key | |
106 | * @param $value | |
858451a9 | 107 | * @param null|int|\DateInterval $ttl |
59e56021 H |
108 | * |
109 | * @return bool | |
110 | * @throws Exception | |
111 | */ | |
858451a9 | 112 | public function set($key, $value, $ttl = NULL) { |
26733eb5 TO |
113 | CRM_Utils_Cache::assertValidKey($key); |
114 | if (is_int($ttl) && $ttl <= 0) { | |
115 | return $this->delete($key); | |
858451a9 | 116 | } |
26733eb5 TO |
117 | $ttl = CRM_Utils_Date::convertCacheTtl($ttl, self::DEFAULT_TIMEOUT); |
118 | if (!$this->_cache->setex($this->_prefix . $key, $ttl, serialize($value))) { | |
aed6cc22 | 119 | if (PHP_SAPI === 'cli' || (Civi\Core\Container::isContainerBooted() && CRM_Core_Permission::check('view debug output'))) { |
26733eb5 | 120 | throw new CRM_Utils_Cache_CacheException("Redis set ($key) failed: " . $this->_cache->getLastError()); |
aed6cc22 TO |
121 | } |
122 | else { | |
123 | Civi::log()->error("Redis set ($key) failed: " . $this->_cache->getLastError()); | |
26733eb5 | 124 | throw new CRM_Utils_Cache_CacheException("Redis set ($key) failed"); |
aed6cc22 | 125 | } |
59e56021 H |
126 | return FALSE; |
127 | } | |
128 | return TRUE; | |
129 | } | |
130 | ||
131 | /** | |
132 | * @param $key | |
2da67cc5 | 133 | * @param mixed $default |
59e56021 H |
134 | * |
135 | * @return mixed | |
136 | */ | |
2da67cc5 | 137 | public function get($key, $default = NULL) { |
26733eb5 | 138 | CRM_Utils_Cache::assertValidKey($key); |
59e56021 | 139 | $result = $this->_cache->get($this->_prefix . $key); |
2da67cc5 | 140 | return ($result === FALSE) ? $default : unserialize($result); |
59e56021 H |
141 | } |
142 | ||
143 | /** | |
144 | * @param $key | |
145 | * | |
eec321a4 | 146 | * @return bool |
59e56021 H |
147 | */ |
148 | public function delete($key) { | |
26733eb5 | 149 | CRM_Utils_Cache::assertValidKey($key); |
eec321a4 TO |
150 | $this->_cache->delete($this->_prefix . $key); |
151 | return TRUE; | |
59e56021 H |
152 | } |
153 | ||
154 | /** | |
124e5288 | 155 | * @return bool |
59e56021 H |
156 | */ |
157 | public function flush() { | |
fbebc7a0 TO |
158 | // FIXME: Ideally, we'd map each prefix to a different 'hash' object in Redis, |
159 | // and this would be simpler. However, that needs to go in tandem with a | |
160 | // more general rethink of cache expiration/TTL. | |
161 | ||
162 | $keys = $this->_cache->keys($this->_prefix . '*'); | |
124e5288 TO |
163 | $this->_cache->del($keys); |
164 | return TRUE; | |
59e56021 | 165 | } |
4ca97b71 | 166 | |
c31de879 TO |
167 | public function clear() { |
168 | return $this->flush(); | |
169 | } | |
170 | ||
59e56021 | 171 | } |