X-Git-Url: https://git.cyclocoop.org/%27.%24link.%27?a=blobdiff_plain;f=includes%2Fdb%2FMWLBFactory.php;h=79f787dba4b73e26b5d7af782ab57cf9c02516e4;hb=c91a71c5f608675df6205a945bdc4be29d81d21e;hp=5c79117f7887b4e1339173a13f475e37a7346eb3;hpb=faf7cc4a09848c538320bd2b9067b1a77c0a0183;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/db/MWLBFactory.php b/includes/db/MWLBFactory.php
index 5c79117f78..79f787dba4 100644
--- a/includes/db/MWLBFactory.php
+++ b/includes/db/MWLBFactory.php
@@ -23,6 +23,7 @@
 
 use MediaWiki\Logger\LoggerFactory;
 use MediaWiki\MediaWikiServices;
+use Wikimedia\Rdbms\LBFactory;
 use Wikimedia\Rdbms\DatabaseDomain;
 
 /**
@@ -30,6 +31,10 @@ use Wikimedia\Rdbms\DatabaseDomain;
  * @ingroup Database
  */
 abstract class MWLBFactory {
+
+	/** @var array Cache of already-logged deprecation messages */
+	private static $loggedDeprecations = [];
+
 	/**
 	 * @param array $lbConf Config for LBFactory::__construct()
 	 * @param Config $mainConfig Main config object from MediaWikiServices
@@ -56,6 +61,7 @@ abstract class MWLBFactory {
 			'connLogger' => LoggerFactory::getInstance( 'DBConnection' ),
 			'perfLogger' => LoggerFactory::getInstance( 'DBPerformance' ),
 			'errorLogger' => [ MWExceptionHandler::class, 'logException' ],
+			'deprecationLogger' => [ static::class, 'logDeprecation' ],
 			'cliMode' => $wgCommandLineMode,
 			'hostname' => wfHostname(),
 			'readOnlyReason' => $readOnlyMode->getReason(),
@@ -201,4 +207,46 @@ abstract class MWLBFactory {
 
 		return $class;
 	}
+
+	public static function setSchemaAliases( LBFactory $lbFactory, Config $config ) {
+		if ( $config->get( 'DBtype' ) === 'mysql' ) {
+			/**
+			 * When SQLite indexes were introduced in r45764, it was noted that
+			 * SQLite requires index names to be unique within the whole database,
+			 * not just within a schema. As discussed in CR r45819, to avoid the
+			 * need for a schema change on existing installations, the indexes
+			 * were implicitly mapped from the new names to the old names.
+			 *
+			 * This mapping can be removed if DB patches are introduced to alter
+			 * the relevant tables in existing installations. Note that because
+			 * this index mapping applies to table creation, even new installations
+			 * of MySQL have the old names (except for installations created during
+			 * a period where this mapping was inappropriately removed, see
+			 * T154872).
+			 */
+			$lbFactory->setIndexAliases( [
+				'ar_usertext_timestamp' => 'usertext_timestamp',
+				'un_user_id' => 'user_id',
+				'un_user_ip' => 'user_ip',
+			] );
+		}
+	}
+
+	/**
+	 * Log a database deprecation warning
+	 * @param string $msg Deprecation message
+	 */
+	public static function logDeprecation( $msg ) {
+		global $wgDevelopmentWarnings;
+
+		if ( isset( self::$loggedDeprecations[$msg] ) ) {
+			return;
+		}
+		self::$loggedDeprecations[$msg] = true;
+
+		if ( $wgDevelopmentWarnings ) {
+			trigger_error( $msg, E_USER_DEPRECATED );
+		}
+		wfDebugLog( 'deprecated', $msg, 'private' );
+	}
 }