MediaWiki  1.27.2
ForeignDBRepo.php
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1 <?php
29 class ForeignDBRepo extends LocalRepo {
31  protected $dbType;
32 
34  protected $dbServer;
35 
37  protected $dbUser;
38 
40  protected $dbPassword;
41 
43  protected $dbName;
44 
46  protected $dbFlags;
47 
49  protected $tablePrefix;
50 
52  protected $hasSharedCache;
53 
54  # Other stuff
55  protected $dbConn;
56  protected $fileFactory = [ 'ForeignDBFile', 'newFromTitle' ];
57  protected $fileFromRowFactory = [ 'ForeignDBFile', 'newFromRow' ];
58 
62  function __construct( $info ) {
63  parent::__construct( $info );
64  $this->dbType = $info['dbType'];
65  $this->dbServer = $info['dbServer'];
66  $this->dbUser = $info['dbUser'];
67  $this->dbPassword = $info['dbPassword'];
68  $this->dbName = $info['dbName'];
69  $this->dbFlags = $info['dbFlags'];
70  $this->tablePrefix = $info['tablePrefix'];
71  $this->hasSharedCache = $info['hasSharedCache'];
72  }
73 
77  function getMasterDB() {
78  if ( !isset( $this->dbConn ) ) {
79  $func = $this->getDBFactory();
80  $this->dbConn = $func( DB_MASTER );
81  }
82 
83  return $this->dbConn;
84  }
85 
89  function getSlaveDB() {
90  return $this->getMasterDB();
91  }
92 
96  protected function getDBFactory() {
98  $params = [
99  'host' => $this->dbServer,
100  'user' => $this->dbUser,
101  'password' => $this->dbPassword,
102  'dbname' => $this->dbName,
103  'flags' => $this->dbFlags,
104  'tablePrefix' => $this->tablePrefix,
105  'foreign' => true,
106  ];
107 
108  return function ( $index ) use ( $type, $params ) {
110  };
111  }
112 
116  function hasSharedCache() {
117  return $this->hasSharedCache;
118  }
119 
126  function getSharedCacheKey( /*...*/ ) {
127  if ( $this->hasSharedCache() ) {
128  $args = func_get_args();
129  array_unshift( $args, $this->dbName, $this->tablePrefix );
130 
131  return call_user_func_array( 'wfForeignMemcKey', $args );
132  } else {
133  return false;
134  }
135  }
136 
137  protected function assertWritableRepo() {
138  throw new MWException( get_class( $this ) . ': write operations are not supported.' );
139  }
140 
147  function getInfo() {
148  return FileRepo::getInfo();
149  }
150 }
A foreign repository with an accessible MediaWiki database.
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
string $tablePrefix
getInfo()
Return information about the repository.
A repository that stores files in the local filesystem and registers them in the wiki's own database...
Definition: LocalRepo.php:31
if($line===false) $args
Definition: cdb.php:64
__construct($info)
getInfo()
Return information about the repository.
Definition: FileRepo.php:1886
$params
static factory($dbType, $p=[])
Given a DB type, construct the name of the appropriate child class of DatabaseBase.
Definition: Database.php:580
string $dbPassword
getSharedCacheKey()
Get a key on the primary cache for this repository.
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:35
const DB_MASTER
Definition: Defines.php:47
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Definition: hooks.txt:2338