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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\AbuseFilter; |
| 4 | |
| 5 | use Wikimedia\Rdbms\DBError; |
| 6 | use Wikimedia\Rdbms\IDatabase; |
| 7 | use Wikimedia\Rdbms\LBFactory; |
| 8 | |
| 9 | class CentralDBManager { |
| 10 | public const SERVICE_NAME = 'AbuseFilterCentralDBManager'; |
| 11 | |
| 12 | /** @var LBFactory */ |
| 13 | private $loadBalancerFactory; |
| 14 | /** @var string|false */ |
| 15 | private $dbName; |
| 16 | /** @var bool */ |
| 17 | private $filterIsCentral; |
| 18 | |
| 19 | /** |
| 20 | * @param LBFactory $loadBalancerFactory |
| 21 | * @param string|false|null $dbName |
| 22 | * @param bool $filterIsCentral |
| 23 | */ |
| 24 | public function __construct( LBFactory $loadBalancerFactory, $dbName, bool $filterIsCentral ) { |
| 25 | $this->loadBalancerFactory = $loadBalancerFactory; |
| 26 | // Use false to agree with LoadBalancer |
| 27 | $this->dbName = $dbName ?: false; |
| 28 | $this->filterIsCentral = $filterIsCentral; |
| 29 | } |
| 30 | |
| 31 | /** |
| 32 | * @param int $index DB_PRIMARY/DB_REPLICA |
| 33 | * @return IDatabase |
| 34 | * @throws DBError |
| 35 | * @throws CentralDBNotAvailableException |
| 36 | */ |
| 37 | public function getConnection( int $index ): IDatabase { |
| 38 | if ( !is_string( $this->dbName ) ) { |
| 39 | throw new CentralDBNotAvailableException( '$wgAbuseFilterCentralDB is not configured' ); |
| 40 | } |
| 41 | |
| 42 | return $this->loadBalancerFactory |
| 43 | ->getMainLB( $this->dbName ) |
| 44 | ->getConnection( $index, [], $this->dbName ); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * @return string |
| 49 | * @throws CentralDBNotAvailableException |
| 50 | */ |
| 51 | public function getCentralDBName(): string { |
| 52 | if ( !is_string( $this->dbName ) ) { |
| 53 | throw new CentralDBNotAvailableException( '$wgAbuseFilterCentralDB is not configured' ); |
| 54 | } |
| 55 | return $this->dbName; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * Whether this database is the central one. |
| 60 | * @todo Deprecate the config in favour of just checking whether the current DB is the same |
| 61 | * as $wgAbuseFilterCentralDB. |
| 62 | * @return bool |
| 63 | */ |
| 64 | public function filterIsCentral(): bool { |
| 65 | return $this->filterIsCentral; |
| 66 | } |
| 67 | } |