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<?php
/**
* Init the user_editcount database field based on the number of rows in the
* revision table.
*
* 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';
class InitEditCount extends Maintenance {
public function __construct() {
parent::__construct();
$this->addOption( 'quick', 'Force the update to be done in a single query' );
$this->addOption( 'background', 'Force replication-friendly mode; may be inefficient but
avoids locking tables or lagging replica DBs with large updates;
calculates counts on a replica DB if possible.
Background mode will be automatically used if multiple servers are listed
in the load balancer, usually indicating a replication environment.' );
$this->addDescription( 'Batch-recalculate user_editcount fields from the revision table' );
}
public function execute() {
global $wgActorTableSchemaMigrationStage;
$dbw = $this->getDB( DB_MASTER );
// Autodetect mode...
if ( $this->hasOption( 'background' ) ) {
$backgroundMode = true;
} elseif ( $this->hasOption( 'quick' ) ) {
$backgroundMode = false;
} else {
$backgroundMode = wfGetLB()->getServerCount() > 1;
}
$actorQuery = ActorMigration::newMigration()->getJoin( 'rev_user' );
$needSpecialQuery = ( $wgActorTableSchemaMigrationStage !== MIGRATION_OLD &&
$wgActorTableSchemaMigrationStage !== MIGRATION_NEW );
if ( $needSpecialQuery ) {
foreach ( $actorQuery['joins'] as &$j ) {
$j[0] = 'JOIN'; // replace LEFT JOIN
}
unset( $j );
}
if ( $backgroundMode ) {
$this->output( "Using replication-friendly background mode...\n" );
$dbr = $this->getDB( DB_REPLICA );
$chunkSize = 100;
$lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __METHOD__ );
$start = microtime( true );
$migrated = 0;
for ( $min = 0; $min <= $lastUser; $min += $chunkSize ) {
$max = $min + $chunkSize;
if ( $needSpecialQuery ) {
// Use separate subqueries to collect counts with the old
// and new schemas, to avoid having to do whole-table scans.
$result = $dbr->select(
[
'user',
'rev1' => '('
. $dbr->selectSQLText(
[ 'revision', 'revision_actor_temp' ],
[ 'rev_user', 'ct' => 'COUNT(*)' ],
[
"rev_user > $min AND rev_user <= $max",
'revactor_rev' => null,
],
__METHOD__,
[ 'GROUP BY' => 'rev_user' ],
[ 'revision_actor_temp' => [ 'LEFT JOIN', 'revactor_rev = rev_id' ] ]
) . ')',
'rev2' => '('
. $dbr->selectSQLText(
[ 'revision' ] + $actorQuery['tables'],
[ 'actor_user', 'ct' => 'COUNT(*)' ],
"actor_user > $min AND actor_user <= $max",
__METHOD__,
[ 'GROUP BY' => 'actor_user' ],
$actorQuery['joins']
) . ')',
],
[ 'user_id', 'user_editcount' => 'COALESCE(rev1.ct,0) + COALESCE(rev2.ct,0)' ],
"user_id > $min AND user_id <= $max",
__METHOD__,
[],
[
'rev1' => [ 'LEFT JOIN', 'user_id = rev_user' ],
'rev2' => [ 'LEFT JOIN', 'user_id = actor_user' ],
]
);
} else {
$revUser = $actorQuery['fields']['rev_user'];
$result = $dbr->select(
[ 'user', 'rev' => [ 'revision' ] + $actorQuery['tables'] ],
[ 'user_id', 'user_editcount' => "COUNT($revUser)" ],
"user_id > $min AND user_id <= $max",
__METHOD__,
[ 'GROUP BY' => 'user_id' ],
[ 'rev' => [ 'LEFT JOIN', "user_id = $revUser" ] ] + $actorQuery['joins']
);
}
foreach ( $result as $row ) {
$dbw->update( 'user',
[ 'user_editcount' => $row->user_editcount ],
[ 'user_id' => $row->user_id ],
__METHOD__ );
++$migrated;
}
$delta = microtime( true ) - $start;
$rate = ( $delta == 0.0 ) ? 0.0 : $migrated / $delta;
$this->output( sprintf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
wfWikiID(),
$migrated,
min( $max, $lastUser ) / $lastUser * 100.0,
$delta,
$rate ) );
wfWaitForSlaves();
}
} else {
$this->output( "Using single-query mode...\n" );
$user = $dbw->tableName( 'user' );
if ( $needSpecialQuery ) {
$subquery1 = $dbw->selectSQLText(
[ 'revision', 'revision_actor_temp' ],
[ 'COUNT(*)' ],
[
'user_id = rev_user',
'revactor_rev' => null,
],
__METHOD__,
[],
[ 'revision_actor_temp' => [ 'LEFT JOIN', 'revactor_rev = rev_id' ] ]
);
$subquery2 = $dbw->selectSQLText(
[ 'revision' ] + $actorQuery['tables'],
[ 'COUNT(*)' ],
'user_id = actor_user',
__METHOD__,
[],
$actorQuery['joins']
);
$dbw->query(
"UPDATE $user SET user_editcount=($subquery1) + ($subquery2)",
__METHOD__
);
} else {
$subquery = $dbw->selectSQLText(
[ 'revision' ] + $actorQuery['tables'],
[ 'COUNT(*)' ],
[ 'user_id = ' . $actorQuery['fields']['rev_user'] ],
__METHOD__,
[],
$actorQuery['joins']
);
$dbw->query( "UPDATE $user SET user_editcount=($subquery)", __METHOD__ );
}
}
$this->output( "Done!\n" );
}
}
$maintClass = InitEditCount::class;
require_once RUN_MAINTENANCE_IF_MAIN;
|
