1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Joas Schilling <coding@schilljs.com>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Markus Goetz <markus@woboq.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Stefan Weil <sw@weilnetz.de>
* @author Vincent Petry <vincent@nextcloud.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Memcache;
use OCP\ICache;
use OCP\ICacheFactory;
use OCP\ILogger;
use OCP\IMemcache;
class Factory implements ICacheFactory {
public const NULL_CACHE = NullCache::class;
/**
* @var string $globalPrefix
*/
private $globalPrefix;
/**
* @var ILogger $logger
*/
private $logger;
/**
* @var string $localCacheClass
*/
private $localCacheClass;
/**
* @var string $distributedCacheClass
*/
private $distributedCacheClass;
/**
* @var string $lockingCacheClass
*/
private $lockingCacheClass;
/**
* @param string $globalPrefix
* @param ILogger $logger
* @param string|null $localCacheClass
* @param string|null $distributedCacheClass
* @param string|null $lockingCacheClass
*/
public function __construct(string $globalPrefix, ILogger $logger,
$localCacheClass = null, $distributedCacheClass = null, $lockingCacheClass = null) {
$this->logger = $logger;
$this->globalPrefix = $globalPrefix;
if (!$localCacheClass) {
$localCacheClass = self::NULL_CACHE;
}
if (!$distributedCacheClass) {
$distributedCacheClass = $localCacheClass;
}
$missingCacheMessage = 'Memcache {class} not available for {use} cache';
$missingCacheHint = 'Is the matching PHP module installed and enabled?';
if (!class_exists($localCacheClass) || !$localCacheClass::isAvailable()) {
if (\OC::$CLI && !defined('PHPUNIT_RUN')) {
// CLI should not hard-fail on broken memcache
$this->logger->info($missingCacheMessage, [
'class' => $localCacheClass,
'use' => 'local',
'app' => 'cli'
]);
$localCacheClass = self::NULL_CACHE;
} else {
throw new \OC\HintException(strtr($missingCacheMessage, [
'{class}' => $localCacheClass, '{use}' => 'local'
]), $missingCacheHint);
}
}
if (!class_exists($distributedCacheClass) || !$distributedCacheClass::isAvailable()) {
if (\OC::$CLI && !defined('PHPUNIT_RUN')) {
// CLI should not hard-fail on broken memcache
$this->logger->info($missingCacheMessage, [
'class' => $distributedCacheClass,
'use' => 'distributed',
'app' => 'cli'
]);
$distributedCacheClass = self::NULL_CACHE;
} else {
throw new \OC\HintException(strtr($missingCacheMessage, [
'{class}' => $distributedCacheClass, '{use}' => 'distributed'
]), $missingCacheHint);
}
}
if (!($lockingCacheClass && class_exists($distributedCacheClass) && $lockingCacheClass::isAvailable())) {
// don't fallback since the fallback might not be suitable for storing lock
$lockingCacheClass = self::NULL_CACHE;
}
$this->localCacheClass = $localCacheClass;
$this->distributedCacheClass = $distributedCacheClass;
$this->lockingCacheClass = $lockingCacheClass;
}
/**
* create a cache instance for storing locks
*
* @param string $prefix
* @return IMemcache
*/
public function createLocking(string $prefix = ''): IMemcache {
return new $this->lockingCacheClass($this->globalPrefix . '/' . $prefix);
}
/**
* create a distributed cache instance
*
* @param string $prefix
* @return ICache
*/
public function createDistributed(string $prefix = ''): ICache {
return new $this->distributedCacheClass($this->globalPrefix . '/' . $prefix);
}
/**
* create a local cache instance
*
* @param string $prefix
* @return ICache
*/
public function createLocal(string $prefix = ''): ICache {
return new $this->localCacheClass($this->globalPrefix . '/' . $prefix);
}
/**
* @see \OC\Memcache\Factory::createDistributed()
* @param string $prefix
* @return ICache
* @deprecated 13.0.0 Use either createLocking, createDistributed or createLocal
*/
public function create(string $prefix = ''): ICache {
return $this->createDistributed($prefix);
}
/**
* check memcache availability
*
* @return bool
*/
public function isAvailable(): bool {
return ($this->distributedCacheClass !== self::NULL_CACHE);
}
/**
* @see \OC\Memcache\Factory::createLocal()
* @param string $prefix
* @return ICache
*/
public function createLowLatency(string $prefix = ''): ICache {
return $this->createLocal($prefix);
}
/**
* Check if a local memory cache backend is available
*
* @return bool
*/
public function isLocalCacheAvailable(): bool {
return ($this->localCacheClass !== self::NULL_CACHE);
}
}
|
