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<?php
/**
* Re-assign users from an old group to a new one
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Maintenance
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script that re-assigns users from an old group to a new one.
*
* @ingroup Maintenance
*/
class MigrateUserGroup extends Maintenance {
public function __construct() {
parent::__construct();
$this->mDescription = "Re-assign users from an old group to a new one";
$this->addArg( 'oldgroup', 'Old user group key', true );
$this->addArg( 'newgroup', 'New user group key', true );
$this->setBatchSize( 200 );
}
public function execute() {
$count = 0;
$oldGroup = $this->getArg( 0 );
$newGroup = $this->getArg( 1 );
$dbw = wfGetDB( DB_MASTER );
$start = $dbw->selectField( 'user_groups', 'MIN(ug_user)',
array( 'ug_group' => $oldGroup ), __FUNCTION__ );
$end = $dbw->selectField( 'user_groups', 'MAX(ug_user)',
array( 'ug_group' => $oldGroup ), __FUNCTION__ );
if ( $start === null ) {
$this->error( "Nothing to do - no users in the '$oldGroup' group", true );
}
# Do remaining chunk
$end += $this->mBatchSize - 1;
$blockStart = $start;
$blockEnd = $start + $this->mBatchSize - 1;
// Migrate users over in batches...
while ( $blockEnd <= $end ) {
$affected = 0;
$this->output( "Doing users $blockStart to $blockEnd\n" );
$dbw->begin( __METHOD__ );
$dbw->update( 'user_groups',
array( 'ug_group' => $newGroup ),
array( 'ug_group' => $oldGroup,
"ug_user BETWEEN $blockStart AND $blockEnd" ),
__METHOD__,
array( 'IGNORE' )
);
$affected += $dbw->affectedRows();
// Delete rows that the UPDATE operation above had to ignore.
// This happens when a user is in both the old and new group.
// Updating the row for the old group membership failed since
// user/group is UNIQUE.
$dbw->delete( 'user_groups',
array( 'ug_group' => $oldGroup,
"ug_user BETWEEN $blockStart AND $blockEnd" ),
__METHOD__
);
$affected += $dbw->affectedRows();
$dbw->commit( __METHOD__ );
// Clear cache for the affected users (bug 40340)
if ( $affected > 0 ) {
// XXX: This also invalidates cache of unaffected users that
// were in the new group and not in the group.
$res = $dbw->select( 'user_groups', 'ug_user',
array( 'ug_group' => $newGroup,
"ug_user BETWEEN $blockStart AND $blockEnd" ),
__METHOD__
);
if ( $res !== false ) {
foreach ( $res as $row ) {
$user = User::newFromId( $row->ug_user );
$user->invalidateCache();
}
}
}
$count += $affected;
$blockStart += $this->mBatchSize;
$blockEnd += $this->mBatchSize;
wfWaitForSlaves();
}
$this->output( "Done! $count users in group '$oldGroup' are now in '$newGroup' instead.\n" );
}
}
$maintClass = "MigrateUserGroup";
require_once RUN_MAINTENANCE_IF_MAIN;
|
