MediaWiki  1.28.0
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 
55  protected $dbConn;
56 
58  protected $fileFactory = [ 'ForeignDBFile', 'newFromTitle' ];
60  protected $fileFromRowFactory = [ 'ForeignDBFile', 'newFromRow' ];
61 
65  function __construct( $info ) {
66  parent::__construct( $info );
67  $this->dbType = $info['dbType'];
68  $this->dbServer = $info['dbServer'];
69  $this->dbUser = $info['dbUser'];
70  $this->dbPassword = $info['dbPassword'];
71  $this->dbName = $info['dbName'];
72  $this->dbFlags = $info['dbFlags'];
73  $this->tablePrefix = $info['tablePrefix'];
74  $this->hasSharedCache = $info['hasSharedCache'];
75  }
76 
80  function getMasterDB() {
81  if ( !isset( $this->dbConn ) ) {
82  $func = $this->getDBFactory();
83  $this->dbConn = $func( DB_MASTER );
84  }
85 
86  return $this->dbConn;
87  }
88 
92  function getSlaveDB() {
93  return $this->getMasterDB();
94  }
95 
99  protected function getDBFactory() {
101  $params = [
102  'host' => $this->dbServer,
103  'user' => $this->dbUser,
104  'password' => $this->dbPassword,
105  'dbname' => $this->dbName,
106  'flags' => $this->dbFlags,
107  'tablePrefix' => $this->tablePrefix,
108  'foreign' => true,
109  ];
110 
111  return function ( $index ) use ( $type, $params ) {
112  return Database::factory( $type, $params );
113  };
114  }
115 
119  function hasSharedCache() {
120  return $this->hasSharedCache;
121  }
122 
129  function getSharedCacheKey( /*...*/ ) {
130  if ( $this->hasSharedCache() ) {
131  $args = func_get_args();
132  array_unshift( $args, $this->dbName, $this->tablePrefix );
133 
134  return call_user_func_array( 'wfForeignMemcKey', $args );
135  } else {
136  return false;
137  }
138  }
139 
140  protected function assertWritableRepo() {
141  throw new MWException( get_class( $this ) . ': write operations are not supported.' );
142  }
143 
150  function getInfo() {
151  return FileRepo::getInfo();
152  }
153 }
static factory($dbType, $p=[])
Construct a Database subclass instance given a database type and parameters.
Definition: Database.php:325
A foreign repository with an accessible MediaWiki database.
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
string $tablePrefix
getInfo()
Return information about the repository.
A repository that stores files in the local filesystem and registers them in the wiki's own database...
Definition: LocalRepo.php:31
const DB_MASTER
Definition: defines.php:23
if($line===false) $args
Definition: cdb.php:64
__construct($info)
IDatabase $dbConn
getInfo()
Return information about the repository.
Definition: FileRepo.php:1890
$params
string $dbPassword
getSharedCacheKey()
Get a key on the primary cache for this repository.
callable $fileFactory
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
callable $fileFromRowFactory
do that in ParserLimitReportFormat instead use this to modify the parameters of the image and a DIV can begin in one section and end in another Make sure your code can handle that case gracefully See the EditSectionClearerLink extension for an example zero but section is usually empty its values are the globals values before the output is cached one of or reset my talk my contributions etc etc otherwise the built in rate limiting checks are if enabled allows for interception of redirect as a string mapping parameter names to values & $type
Definition: hooks.txt:2491