Cache.php — Matomo Analytics – Powerful, Privacy-First Insights for WordPress 4.0.2

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Cache.php

117 lines

1	<?php
2	/**
3	* Matomo - free/libre analytics platform
4	*
5	* @link https://matomo.org
6	* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
7	*
8	*/
9	namespace Piwik;
10
11	use Piwik\Container\StaticContainer;
12
13	class Cache
14	{
15
16	/**
17	* This can be considered as the default cache to use in case you don't know which one to pick. It does not support
18	* the caching of any objects though. Only boolean, numbers, strings and arrays are supported. Whenever you request
19	* an entry from the cache it will fetch the entry. Cache entries might be persisted but not necessarily. It
20	* depends on the configured backend.
21	*
22	* @return \Matomo\Cache\Lazy
23	*/
24	public static function getLazyCache()
25	{
26	return StaticContainer::get('Matomo\Cache\Lazy');
27	}
28
29	/**
30	* This class is used to cache any data during one request. It won't be persisted between requests and it can
31	* cache all kind of data, even objects or resources. This cache is very fast.
32	*
33	* @return \Matomo\Cache\Transient
34	*/
35	public static function getTransientCache()
36	{
37	return StaticContainer::get('Matomo\Cache\Transient');
38	}
39
40	/**
41	* This cache stores all its cache entries under one "cache" entry in a configurable backend.
42	*
43	* This comes handy for things that you need very often, nearly in every request. For example plugin metadata, the
44	* list of tracker plugins, the list of available languages, ...
45	* Instead of having to read eg. a hundred cache entries from files (or any other backend) it only loads one cache
46	* entry which contains the hundred keys. Should be used only for things that you need very often and only for
47	* cache entries that are not too large to keep loading and parsing the single cache entry fast.
48	* All cache entries it contains have the same life time. For fast performance it won't validate any cache ids.
49	* It is not possible to cache any objects using this cache.
50	*
51	* @return \Matomo\Cache\Eager
52	*/
53	public static function getEagerCache()
54	{
55	return StaticContainer::get('Matomo\Cache\Eager');
56	}
57
58	public static function flushAll()
59	{
60	self::getLazyCache()->flushAll();
61	self::getTransientCache()->flushAll();
62	self::getEagerCache()->flushAll();
63	}
64
65	/**
66	* @param $type
67	* @return \Matomo\Cache\Backend
68	*/
69	public static function buildBackend($type)
70	{
71	$factory = new \Matomo\Cache\Backend\Factory();
72	$options = self::getOptions($type);
73
74	$backend = $factory->buildBackend($type, $options);
75
76	return $backend;
77	}
78
79	private static function getOptions($type)
80	{
81	$options = self::getBackendOptions($type);
82
83	switch ($type) {
84	case 'file':
85
86	$options = array('directory' => StaticContainer::get('path.cache'));
87	break;
88
89	case 'chained':
90
91	foreach ($options['backends'] as $backend) {
92	$options[$backend] = self::getOptions($backend);
93	}
94
95	break;
96
97	case 'redis':
98
99	if (!empty($options['timeout'])) {
100	$options['timeout'] = (float)Common::forceDotAsSeparatorForDecimalPoint($options['timeout']);
101	}
102
103	break;
104	}
105
106	return $options;
107	}
108
109	private static function getBackendOptions($backend)
110	{
111	$key = ucfirst($backend) . 'Cache';
112	$options = Config::getInstance()->$key;
113
114	return $options;
115	}
116	}
117