MediaWiki REL1_33
CachingSiteStore.php
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1<?php
2
31class CachingSiteStore implements SiteStore {
32
36 private $sites = null;
37
41 private $cacheKey;
42
47
51 private $cache;
52
56 private $siteStore;
57
64 public function __construct(
67 $cacheKey = null,
68 $cacheTimeout = 3600
69 ) {
70 $this->siteStore = $siteStore;
71 $this->cache = $cache;
72 $this->cacheKey = $cacheKey;
73 $this->cacheTimeout = $cacheTimeout;
74 }
75
90 private function getCacheKey() {
91 if ( $this->cacheKey === null ) {
92 $type = 'SiteList#' . SiteList::getSerialVersionId();
93 $this->cacheKey = $this->cache->makeKey( "sites/$type" );
94 }
95
96 return $this->cacheKey;
97 }
98
106 public function getSites() {
107 if ( $this->sites === null ) {
108 $this->sites = $this->cache->get( $this->getCacheKey() );
109
110 if ( !is_object( $this->sites ) ) {
111 $this->sites = $this->siteStore->getSites();
112
113 $this->cache->set( $this->getCacheKey(), $this->sites, $this->cacheTimeout );
114 }
115 }
116
117 return $this->sites;
118 }
119
129 public function getSite( $globalId ) {
130 $sites = $this->getSites();
131
132 return $sites->hasSite( $globalId ) ? $sites->getSite( $globalId ) : null;
133 }
134
144 public function saveSite( Site $site ) {
145 return $this->saveSites( [ $site ] );
146 }
147
157 public function saveSites( array $sites ) {
158 if ( empty( $sites ) ) {
159 return true;
160 }
161
162 $success = $this->siteStore->saveSites( $sites );
163
164 // purge cache
165 $this->reset();
166
167 return $success;
168 }
169
178 public function reset() {
179 // purge cache
180 $this->cache->delete( $this->getCacheKey() );
181 $this->sites = null;
182 }
183
193 public function clear() {
194 $this->reset();
195
196 return $this->siteStore->clear();
197 }
198
199}
Class representing a cache/ephemeral data store.
Definition BagOStuff.php:58
saveSites(array $sites)
SiteList null $sites
getCacheKey()
Constructs a cache key to use for caching the list of sites.
clear()
Clears the list of sites stored.
__construct(SiteStore $siteStore, BagOStuff $cache, $cacheKey=null, $cacheTimeout=3600)
reset()
Purges the internal and external cache of the site list, forcing the list.
static getSerialVersionId()
Returns the version ID that identifies the serialization structure used by getSerializationData() and...
Definition SiteList.php:310
hasSite( $globalSiteId)
Returns if the list contains the site with the provided global site identifier.
Definition SiteList.php:140
getSite( $globalSiteId)
Returns the Site with the provided global site identifier.
Definition SiteList.php:154
Definition Site.php:29
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition injection.txt:37
you have access to all of the normal MediaWiki so you can get a DB use the cache
The wiki should then use memcached to cache various data To use multiple just add more items to the array To increase the weight of a make its entry a array("192.168.0.1:11211", 2))