From a1789ddde42033f1b05cc4929491214ee6e79383 Mon Sep 17 00:00:00 2001 From: Pierre Schmitz Date: Thu, 17 Dec 2015 09:15:42 +0100 Subject: Update to MediaWiki 1.26.0 --- maintenance/fixSlaveDesync.php | 246 ----------------------------------------- 1 file changed, 246 deletions(-) delete mode 100644 maintenance/fixSlaveDesync.php (limited to 'maintenance/fixSlaveDesync.php') diff --git a/maintenance/fixSlaveDesync.php b/maintenance/fixSlaveDesync.php deleted file mode 100644 index a5418ced..00000000 --- a/maintenance/fixSlaveDesync.php +++ /dev/null @@ -1,246 +0,0 @@ -mDescription = ""; - } - - public function getDbType() { - return Maintenance::DB_ADMIN; - } - - public function execute() { - $this->slaveIndexes = array(); - $serverCount = wfGetLB()->getServerCount(); - for ( $i = 1; $i < $serverCount; $i++ ) { - if ( wfGetLB()->isNonZeroLoad( $i ) ) { - $this->slaveIndexes[] = $i; - } - } - - if ( $this->hasArg() ) { - $this->desyncFixPage( $this->getArg() ); - } else { - $corrupt = $this->findPageLatestCorruption(); - foreach ( $corrupt as $id => $dummy ) { - $this->desyncFixPage( $id ); - } - } - } - - /** - * Find all pages that have a corrupted page_latest - * @return array - */ - private function findPageLatestCorruption() { - $desync = array(); - $n = 0; - $dbw = wfGetDB( DB_MASTER ); - $masterIDs = array(); - $res = $dbw->select( - 'page', - array( 'page_id', 'page_latest' ), - array( 'page_id<6054123' ), - __METHOD__ - ); - $this->output( "Number of pages: " . $res->numRows() . "\n" ); - foreach ( $res as $row ) { - $masterIDs[$row->page_id] = $row->page_latest; - if ( !( ++$n % 10000 ) ) { - $this->output( "$n\r" ); - } - } - $this->output( "\n" ); - - foreach ( $this->slaveIndexes as $i ) { - $db = wfGetDB( $i ); - $res = $db->select( - 'page', - array( 'page_id', 'page_latest' ), - array( 'page_id<6054123' ), - __METHOD__ - ); - foreach ( $res as $row ) { - if ( isset( $masterIDs[$row->page_id] ) && $masterIDs[$row->page_id] != $row->page_latest ) { - $desync[$row->page_id] = true; - $this->output( $row->page_id . "\t" ); - } - } - } - $this->output( "\n" ); - - return $desync; - } - - /** - * Fix a broken page entry - * @param int $pageID The page_id to fix - */ - private function desyncFixPage( $pageID ) { - # Check for a corrupted page_latest - $dbw = wfGetDB( DB_MASTER ); - $dbw->begin( __METHOD__ ); - $realLatest = $dbw->selectField( 'page', 'page_latest', array( 'page_id' => $pageID ), - __METHOD__, 'FOR UPDATE' ); - # list( $masterFile, $masterPos ) = $dbw->getMasterPos(); - $found = false; - foreach ( $this->slaveIndexes as $i ) { - $db = wfGetDB( $i ); - /* - if ( !$db->masterPosWait( $masterFile, $masterPos, 10 ) ) { - $this->output( "Slave is too lagged, aborting\n" ); - $dbw->commit( __METHOD__ ); - sleep(10); - return; - }*/ - $latest = $db->selectField( 'page', 'page_latest', array( 'page_id' => $pageID ), __METHOD__ ); - $max = $db->selectField( 'revision', 'MAX(rev_id)', false, __METHOD__ ); - if ( $latest != $realLatest && $realLatest < $max ) { - $this->output( "page_latest corrupted in page $pageID, server $i\n" ); - $found = true; - break; - } - } - if ( !$found ) { - $this->output( "page_id $pageID seems fine\n" ); - $dbw->commit( __METHOD__ ); - - return; - } - - # Find the missing revisions - $res = $dbw->select( 'revision', array( 'rev_id' ), array( 'rev_page' => $pageID ), - __METHOD__, 'FOR UPDATE' ); - $masterIDs = array(); - foreach ( $res as $row ) { - $masterIDs[] = $row->rev_id; - } - - $res = $dbw->select( 'revision', array( 'rev_id' ), array( 'rev_page' => $pageID ), __METHOD__ ); - $slaveIDs = array(); - foreach ( $res as $row ) { - $slaveIDs[] = $row->rev_id; - } - if ( count( $masterIDs ) < count( $slaveIDs ) ) { - $missingIDs = array_diff( $slaveIDs, $masterIDs ); - if ( count( $missingIDs ) ) { - $this->output( "Found " . count( $missingIDs ) - . " lost in master, copying from slave... " ); - $dbFrom = $dbw; - $found = true; - $toMaster = true; - } else { - $found = false; - } - } else { - $missingIDs = array_diff( $masterIDs, $slaveIDs ); - if ( count( $missingIDs ) ) { - $this->output( "Found " . count( $missingIDs ) - . " missing revision(s), copying from master... " ); - $dbFrom = $dbw; - $found = true; - $toMaster = false; - } else { - $found = false; - } - } - - if ( $found ) { - foreach ( $missingIDs as $rid ) { - $this->output( "$rid " ); - # Revision - $row = $dbFrom->selectRow( 'revision', '*', array( 'rev_id' => $rid ), __METHOD__ ); - if ( $toMaster ) { - $id = $dbw->selectField( 'revision', 'rev_id', array( 'rev_id' => $rid ), - __METHOD__, 'FOR UPDATE' ); - if ( $id ) { - $this->output( "Revision already exists\n" ); - $found = false; - break; - } else { - $dbw->insert( 'revision', get_object_vars( $row ), __METHOD__, 'IGNORE' ); - } - } else { - foreach ( $this->slaveIndexes as $i ) { - $db = wfGetDB( $i ); - $db->insert( 'revision', get_object_vars( $row ), __METHOD__, 'IGNORE' ); - } - } - - # Text - $row = $dbFrom->selectRow( 'text', '*', array( 'old_id' => $row->rev_text_id ), __METHOD__ ); - if ( $toMaster ) { - $dbw->insert( 'text', get_object_vars( $row ), __METHOD__, 'IGNORE' ); - } else { - foreach ( $this->slaveIndexes as $i ) { - $db = wfGetDB( $i ); - $db->insert( 'text', get_object_vars( $row ), __METHOD__, 'IGNORE' ); - } - } - } - $this->output( "done\n" ); - } - - if ( $found ) { - $this->output( "Fixing page_latest... " ); - if ( $toMaster ) { - /* - $dbw->update( - 'page', - array( 'page_latest' => $realLatest ), - array( 'page_id' => $pageID ), - __METHOD__ - ); - */ - } else { - foreach ( $this->slaveIndexes as $i ) { - $db = wfGetDB( $i ); - $db->update( - 'page', - array( 'page_latest' => $realLatest ), - array( 'page_id' => $pageID ), - __METHOD__ - ); - } - } - $this->output( "done\n" ); - } - $dbw->commit( __METHOD__ ); - } -} - -$maintClass = "FixSlaveDesync"; -require_once RUN_MAINTENANCE_IF_MAIN; -- cgit v1.2.2