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| 1 | <?php |
| 2 | /** |
| 3 | * @license GPL-2.0-or-later |
| 4 | * @file |
| 5 | */ |
| 6 | namespace Wikimedia\Rdbms; |
| 7 | |
| 8 | use RuntimeException; |
| 9 | |
| 10 | /** |
| 11 | * Placeholder LoadBalancer that throws an error upon attempts to access connections |
| 12 | * |
| 13 | * This is useful when running code with no config file present, e.g. during installation. |
| 14 | * |
| 15 | * @since 1.40 |
| 16 | * @ingroup Database |
| 17 | */ |
| 18 | class LoadBalancerDisabled extends LoadBalancer { |
| 19 | |
| 20 | public function __construct( array $params = [] ) { |
| 21 | parent::__construct( [ |
| 22 | 'servers' => [ [ |
| 23 | 'type' => 'disabled', |
| 24 | 'host' => '(disabled)', |
| 25 | 'dbname' => null, |
| 26 | 'load' => 1, |
| 27 | ] ], |
| 28 | 'trxProfiler' => $params['trxProfiler'] ?? null, |
| 29 | 'srvCache' => $params['srvCache'] ?? null, |
| 30 | 'wanCache' => $params['wanCache'] ?? null, |
| 31 | 'localDomain' => $params['localDomain'] ?? '(disabled)', |
| 32 | 'readOnlyReason' => $params['readOnlyReason'] ?? false, |
| 33 | 'clusterName' => $params['clusterName'] ?? null, |
| 34 | ] ); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * @param int $i |
| 39 | * @param DatabaseDomain $domain |
| 40 | * @param array $lbInfo |
| 41 | * |
| 42 | * @return never |
| 43 | */ |
| 44 | protected function reallyOpenConnection( $i, DatabaseDomain $domain, array $lbInfo ): never { |
| 45 | throw new RuntimeException( 'Database backend disabled' ); |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * @param int $i Specific (overrides $groups) or virtual (DB_PRIMARY/DB_REPLICA) server index |
| 50 | * @param string[]|string $groups Query group(s) in preference order; [] for the default group |
| 51 | * @param string|false $domain DB domain ID or false for the local domain |
| 52 | * @param int $flags Bitfield of CONN_* class constants |
| 53 | * |
| 54 | * @return never |
| 55 | */ |
| 56 | public function getConnection( $i, $groups = [], string|false $domain = false, $flags = 0 ): never { |
| 57 | throw new RuntimeException( 'Database backend disabled' ); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * @internal Only to be used by DBConnRef |
| 62 | * @param int $i Specific (overrides $groups) or virtual (DB_PRIMARY/DB_REPLICA) server index |
| 63 | * @param string[]|string $groups Query group(s) in preference order; [] for the default group |
| 64 | * @param string|false $domain DB domain ID or false for the local domain |
| 65 | * @param int $flags Bitfield of CONN_* class constants (e.g. CONN_TRX_AUTOCOMMIT) |
| 66 | * @return never |
| 67 | */ |
| 68 | public function getConnectionInternal( $i, $groups = [], $domain = false, $flags = 0 ): never { |
| 69 | throw new RuntimeException( 'Database backend disabled' ); |
| 70 | } |
| 71 | |
| 72 | /** |
| 73 | * @param int $i Specific (overrides $groups) or virtual (DB_PRIMARY/DB_REPLICA) server index |
| 74 | * @param string[]|string $groups Query group(s) in preference order; [] for the default group |
| 75 | * @param string|false $domain DB domain ID or false for the local domain |
| 76 | * @param int $flags Bitfield of CONN_* class constants |
| 77 | * |
| 78 | * @return never |
| 79 | */ |
| 80 | public function getMaintenanceConnectionRef( $i, $groups = [], $domain = false, $flags = 0 ): never { |
| 81 | throw new RuntimeException( 'Database backend disabled' ); |
| 82 | } |
| 83 | |
| 84 | } |