MediaWiki REL1_32
DBSiteStore.php
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1<?php
2
4
33class DBSiteStore implements SiteStore {
34
38 protected $sites = null;
39
44
54 $this->dbLoadBalancer = $dbLoadBalancer;
55 }
56
64 public function getSites() {
65 $this->loadSites();
66
67 return $this->sites;
68 }
69
75 protected function loadSites() {
76 $this->sites = new SiteList();
77
78 $dbr = $this->dbLoadBalancer->getConnection( DB_REPLICA );
79
80 $res = $dbr->select(
81 'sites',
82 [
83 'site_id',
84 'site_global_key',
85 'site_type',
86 'site_group',
87 'site_source',
88 'site_language',
89 'site_protocol',
90 'site_domain',
91 'site_data',
92 'site_forward',
93 'site_config',
94 ],
95 '',
96 __METHOD__,
97 [ 'ORDER BY' => 'site_global_key' ]
98 );
99
100 foreach ( $res as $row ) {
101 $site = Site::newForType( $row->site_type );
102 $site->setGlobalId( $row->site_global_key );
103 $site->setInternalId( (int)$row->site_id );
104 $site->setForward( (bool)$row->site_forward );
105 $site->setGroup( $row->site_group );
106 $site->setLanguageCode( $row->site_language === ''
107 ? null
108 : $row->site_language
109 );
110 $site->setSource( $row->site_source );
111 $site->setExtraData( unserialize( $row->site_data ) );
112 $site->setExtraConfig( unserialize( $row->site_config ) );
113 $this->sites[] = $site;
114 }
115
116 // Batch load the local site identifiers.
117 $ids = $dbr->select(
118 'site_identifiers',
119 [
120 'si_site',
121 'si_type',
122 'si_key',
123 ],
124 [],
125 __METHOD__
126 );
127
128 foreach ( $ids as $id ) {
129 if ( $this->sites->hasInternalId( $id->si_site ) ) {
130 $site = $this->sites->getSiteByInternalId( $id->si_site );
131 $site->addLocalId( $id->si_type, $id->si_key );
132 $this->sites->setSite( $site );
133 }
134 }
135 }
136
146 public function getSite( $globalId ) {
147 if ( $this->sites === null ) {
148 $this->sites = $this->getSites();
149 }
150
151 return $this->sites->hasSite( $globalId ) ? $this->sites->getSite( $globalId ) : null;
152 }
153
163 public function saveSite( Site $site ) {
164 return $this->saveSites( [ $site ] );
165 }
166
176 public function saveSites( array $sites ) {
177 if ( empty( $sites ) ) {
178 return true;
179 }
180
181 $dbw = $this->dbLoadBalancer->getConnection( DB_MASTER );
182
183 $dbw->startAtomic( __METHOD__ );
184
185 $success = true;
186
187 $internalIds = [];
188 $localIds = [];
189
190 foreach ( $sites as $site ) {
191 if ( $site->getInternalId() !== null ) {
192 $internalIds[] = $site->getInternalId();
193 }
194
195 $fields = [
196 // Site data
197 'site_global_key' => $site->getGlobalId(), // TODO: check not null
198 'site_type' => $site->getType(),
199 'site_group' => $site->getGroup(),
200 'site_source' => $site->getSource(),
201 'site_language' => $site->getLanguageCode() ?? '',
202 'site_protocol' => $site->getProtocol(),
203 'site_domain' => strrev( $site->getDomain() ) . '.',
204 'site_data' => serialize( $site->getExtraData() ),
205
206 // Site config
207 'site_forward' => $site->shouldForward() ? 1 : 0,
208 'site_config' => serialize( $site->getExtraConfig() ),
209 ];
210
211 $rowId = $site->getInternalId();
212 if ( $rowId !== null ) {
213 $success = $dbw->update(
214 'sites', $fields, [ 'site_id' => $rowId ], __METHOD__
215 ) && $success;
216 } else {
217 $success = $dbw->insert( 'sites', $fields, __METHOD__ ) && $success;
218 $rowId = $dbw->insertId();
219 }
220
221 foreach ( $site->getLocalIds() as $idType => $ids ) {
222 foreach ( $ids as $id ) {
223 $localIds[] = [ $rowId, $idType, $id ];
224 }
225 }
226 }
227
228 if ( $internalIds !== [] ) {
229 $dbw->delete(
230 'site_identifiers',
231 [ 'si_site' => $internalIds ],
232 __METHOD__
233 );
234 }
235
236 foreach ( $localIds as $localId ) {
237 $dbw->insert(
238 'site_identifiers',
239 [
240 'si_site' => $localId[0],
241 'si_type' => $localId[1],
242 'si_key' => $localId[2],
243 ],
244 __METHOD__
245 );
246 }
247
248 $dbw->endAtomic( __METHOD__ );
249
250 $this->reset();
251
252 return $success;
253 }
254
260 public function reset() {
261 $this->sites = null;
262 }
263
271 public function clear() {
272 $dbw = $this->dbLoadBalancer->getConnection( DB_MASTER );
273
274 $dbw->startAtomic( __METHOD__ );
275 $ok = $dbw->delete( 'sites', '*', __METHOD__ );
276 $ok = $dbw->delete( 'site_identifiers', '*', __METHOD__ ) && $ok;
277 $dbw->endAtomic( __METHOD__ );
278
279 $this->reset();
280
281 return $ok;
282 }
283
284}
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
serialize()
unserialize( $serialized)
getSite( $globalId)
SiteList null $sites
reset()
Resets the SiteList.
loadSites()
Fetches the site from the database and loads them into the sites field.
saveSites(array $sites)
clear()
Clears the list of sites stored in the database.
__construct(LoadBalancer $dbLoadBalancer)
LoadBalancer $dbLoadBalancer
saveSite(Site $site)
Definition Site.php:29
static newForType( $siteType)
Definition Site.php:646
Database connection, tracking, load balancing, and transaction manager for a cluster.
$res
Definition database.txt:21
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
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
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const DB_REPLICA
Definition defines.php:25
const DB_MASTER
Definition defines.php:26