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<?php
$wgUseRootUser = true;
require_once( 'commandLine.inc' );
//$wgDebugLogFile = '/dev/stdout';
$slaveIndexes = array();
for ( $i = 1; $i < count( $wgDBservers ); $i++ ) {
if ( $wgLoadBalancer->isNonZeroLoad( $i ) ) {
$slaveIndexes[] = $i;
}
}
/*
foreach ( $wgLoadBalancer->mServers as $i => $server ) {
$wgLoadBalancer->mServers[$i]['flags'] |= DBO_DEBUG;
}*/
$reportingInterval = 1000;
if ( isset( $args[0] ) ) {
desyncFixPage( $args[0] );
} else {
$dbw =& wfGetDB( DB_MASTER );
$maxPage = $dbw->selectField( 'page', 'MAX(page_id)', false, 'fixDesync.php' );
for ( $i=1; $i <= $maxPage; $i++ ) {
desyncFixPage( $i );
if ( !($i % $reportingInterval) ) {
print "$i\n";
}
}
}
function desyncFixPage( $pageID ) {
global $slaveIndexes;
$fname = 'desyncFixPage';
# Check for a corrupted page_latest
$dbw =& wfGetDB( DB_MASTER );
$realLatest = $dbw->selectField( 'page', 'page_latest', array( 'page_id' => $pageID ), $fname );
$found = false;
foreach ( $slaveIndexes as $i ) {
$db =& wfGetDB( $i );
$latest = $db->selectField( 'page', 'page_latest', array( 'page_id' => $pageID ), $fname );
$max = $db->selectField( 'revision', 'MAX(rev_id)', false, $fname );
if ( $latest != $realLatest && $realLatest < $max ) {
print "page_latest corrupted in page $pageID, server $i\n";
$found = true;
break;
}
}
if ( !$found ) {
return;
}
# Find the missing revision
$res = $dbw->select( 'revision', array( 'rev_id' ), array( 'rev_page' => $pageID ), $fname );
$masterIDs = array();
while ( $row = $dbw->fetchObject( $res ) ) {
$masterIDs[] = $row->rev_id;
}
$dbw->freeResult( $res );
$res = $db->select( 'revision', array( 'rev_id' ), array( 'rev_page' => $pageID ), $fname );
$slaveIDs = array();
while ( $row = $db->fetchObject( $res ) ) {
$slaveIDs[] = $row->rev_id;
}
$db->freeResult( $res );
$missingIDs = array_diff( $masterIDs, $slaveIDs );
if ( count( $missingIDs ) ) {
print "Found " . count( $missingIDs ) . " missing revision(s), copying from master... ";
foreach ( $missingIDs as $rid ) {
print "$rid ";
# Revision
$row = $dbw->selectRow( 'revision', '*', array( 'rev_id' => $rid ), $fname );
foreach ( $slaveIndexes as $i ) {
$db =& wfGetDB( $i );
$db->insert( 'revision', get_object_vars( $row ), $fname, 'IGNORE' );
}
# Text
$row = $dbw->selectRow( 'text', '*', array( 'old_id' => $row->rev_text_id ), $fname );
foreach ( $slaveIndexes as $i ) {
$db =& wfGetDB( $i );
$db->insert( 'text', get_object_vars( $row ), $fname, 'IGNORE' );
}
}
print "done\n";
}
print "Fixing page_latest... ";
foreach ( $slaveIndexes as $i ) {
$db =& wfGetDB( $i );
$db->update( 'page', array( 'page_latest' => $realLatest ), array( 'page_id' => $pageID ), $fname );
}
print "done\n";
}
?>
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