summaryrefslogtreecommitdiffstats
path: root/lib/private/memcache/factory.php
blob: 334cf9a1f0e42017030e73c64bb4619921311dcf (plain)
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
<?php
/**
 * Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 * See the COPYING-README file.
 */

namespace OC\Memcache;

use \OCP\ICacheFactory;

class Factory implements ICacheFactory {
	/**
	 * @var string $globalPrefix
	 */
	private $globalPrefix;

	/**
	 * @param string $globalPrefix
	 */
	public function __construct($globalPrefix) {
		$this->globalPrefix = $globalPrefix;
	}

	/**
	 * get a cache instance, will return null if no backend is available
	 *
	 * @param string $prefix
	 * @return \OC\Memcache\Cache
	 */
	function create($prefix = '') {
		$prefix = $this->globalPrefix . '/' . $prefix;
		if (XCache::isAvailable()) {
			return new XCache($prefix);
		} elseif (APCu::isAvailable()) {
			return new APCu($prefix);
		} elseif (APC::isAvailable()) {
			return new APC($prefix);
		} elseif (Memcached::isAvailable()) {
			return new Memcached($prefix);
		} else {
			return null;
		}
	}

	/**
	 * check if there is a memcache backend available
	 *
	 * @return bool
	 */
	public function isAvailable() {
		return XCache::isAvailable() || APCu::isAvailable() || APC::isAvailable() || Memcached::isAvailable();
	}

	/**
	 * get a in-server cache instance, will return null if no backend is available
	 *
	 * @param string $prefix
	 * @return \OC\Memcache\Cache
	 */
	public static function createLowLatency($prefix = '') {
		if (XCache::isAvailable()) {
			return new XCache($prefix);
		} elseif (APCu::isAvailable()) {
			return new APCu($prefix);
		} elseif (APC::isAvailable()) {
			return new APC($prefix);
		} else {
			return null;
		}
	}

	/**
	 * check if there is a in-server backend available
	 *
	 * @return bool
	 */
	public static function isAvailableLowLatency() {
		return XCache::isAvailable() || APCu::isAvailable() || APC::isAvailable();
	}


}