MediaWiki  master
getReplicaServer.php
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1 <?php
24 require_once __DIR__ . '/Maintenance.php';
25 
27 
34  public function __construct() {
35  parent::__construct();
36  $this->addOption( "group", "Query group to check specifically" );
37  $this->addDescription( 'Report the hostname of a replica DB server' );
38  }
39 
40  public function execute() {
41  if ( $this->hasOption( 'group' ) ) {
42  $db = $this->getDB( DB_REPLICA, $this->getOption( 'group' ) );
43  $host = $db->getServer();
44  } else {
45  $lb = MediaWikiServices::getInstance()->getDBLoadBalancer();
46  $i = $lb->getReaderIndex();
47  $host = $lb->getServerName( $i );
48  }
49  $this->output( "$host\n" );
50  }
51 }
52 
53 $maintClass = GetReplicaServer::class;
54 require_once RUN_MAINTENANCE_IF_MAIN;
const RUN_MAINTENANCE_IF_MAIN
Definition: Maintenance.php:39
getOption( $name, $default=null)
Get an option, or return the default.
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: Maintenance.php:82
$maintClass
hasOption( $name)
Checks to see if a particular option exists.
Maintenance script that reports the hostname of a replica DB server.
addDescription( $text)
Set the description text.
output( $out, $channel=null)
Throw some output to the user.
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
const DB_REPLICA
Definition: defines.php:25
getDB( $db, $groups=[], $dbDomain=false)
Returns a database to be used by current maintenance script.