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<?php
/**
* @file
* @ingroup Maintenance
*/
require_once "commandLine.inc";
if( isset( $options['help'] ) ) {
die( "Batch-recalculate user_editcount fields from the revision table.
Options:
--quick Force the update to be done in a single query.
--background Force replication-friendly mode; may be inefficient but
avoids locking tables or lagging slaves with large updates;
calculates counts on a slave if possible.
Background mode will be automatically used if the server is MySQL 4.0
(which does not support subqueries) or if multiple servers are listed
in \$wgDBservers, usually indicating a replication environment.
");
}
$dbw = wfGetDB( DB_MASTER );
$user = $dbw->tableName( 'user' );
$revision = $dbw->tableName( 'revision' );
$dbver = $dbw->getServerVersion();
// Autodetect mode...
$backgroundMode = count( $wgDBservers ) > 1 ||
($dbw instanceof DatabaseMySql && version_compare( $dbver, '4.1' ) < 0);
if( isset( $options['background'] ) ) {
$backgroundMode = true;
} elseif( isset( $options['quick'] ) ) {
$backgroundMode = false;
}
if( $backgroundMode ) {
echo "Using replication-friendly background mode...\n";
$dbr = wfGetDB( DB_SLAVE );
$chunkSize = 100;
$lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __FUNCTION__ );
$start = microtime( true );
$migrated = 0;
for( $min = 0; $min <= $lastUser; $min += $chunkSize ) {
$max = $min + $chunkSize;
$result = $dbr->query(
"SELECT
user_id,
COUNT(rev_user) AS user_editcount
FROM $user
LEFT OUTER JOIN $revision ON user_id=rev_user
WHERE user_id > $min AND user_id <= $max
GROUP BY user_id",
__FUNCTION__ );
while( $row = $dbr->fetchObject( $result ) ) {
$dbw->update( 'user',
array( 'user_editcount' => $row->user_editcount ),
array( 'user_id' => $row->user_id ),
__FUNCTION__ );
++$migrated;
}
$dbr->freeResult( $result );
$delta = microtime( true ) - $start;
$rate = ($delta == 0.0) ? 0.0 : $migrated / $delta;
printf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
$wgDBname,
$migrated,
min( $max, $lastUser ) / $lastUser * 100.0,
$delta,
$rate );
wfWaitForSlaves( 10 );
}
} else {
// Subselect should work on modern MySQLs etc
echo "Using single-query mode...\n";
$sql = "UPDATE $user SET user_editcount=(SELECT COUNT(*) FROM $revision WHERE rev_user=user_id)";
$dbw->query( $sql );
}
echo "Done!\n";
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