wiki.techinc.nl/maintenance/migrateUserGroup.php
Mark A. Hershberger d5fced5058 Update migrateUserGroup to deal with primary key issue
Update migrateUserGroup so that if a user is in both the old group and
the new group, the script still succeeds.  Otherwise, it will fail
with violations to the PRIMARY KEY index on the user_groups table.

Change-Id: I7bfda03f5735633d03b81092dad29d73293cd182
2012-06-29 23:39:25 +04:00

78 lines
2.7 KiB
PHP

<?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
*
* @ingroup Maintenance
*/
require_once( dirname( __FILE__ ) . '/Maintenance.php' );
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 ) {
$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' )
);
$count += $dbw->affectedRows();
$dbw->delete( 'user_groups',
array( 'ug_group' => $oldGroup,
"ug_user BETWEEN $blockStart AND $blockEnd" ),
__METHOD__
);
$count += $dbw->affectedRows();
$dbw->commit( __METHOD__ );
$blockStart += $this->mBatchSize;
$blockEnd += $this->mBatchSize;
wfWaitForSlaves();
}
$this->output( "Done! $count user(s) in group '$oldGroup' are now in '$newGroup' instead.\n" );
}
}
$maintClass = "MigrateUserGroup";
require_once( RUN_MAINTENANCE_IF_MAIN );