3 * Init the user_editcount database field based on the number of rows in the
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 * http://www.gnu.org/copyleft/gpl.html
22 * @ingroup Maintenance
25 require_once __DIR__
. '/Maintenance.php';
27 use MediaWiki\MediaWikiServices
;
29 class InitEditCount
extends Maintenance
{
30 public function __construct() {
31 parent
::__construct();
32 $this->addOption( 'quick', 'Force the update to be done in a single query' );
33 $this->addOption( 'background', 'Force replication-friendly mode; may be inefficient but
34 avoids locking tables or lagging replica DBs with large updates;
35 calculates counts on a replica DB if possible.
37 Background mode will be automatically used if multiple servers are listed
38 in the load balancer, usually indicating a replication environment.' );
39 $this->addDescription( 'Batch-recalculate user_editcount fields from the revision table' );
42 public function execute() {
43 global $wgActorTableSchemaMigrationStage;
45 $dbw = $this->getDB( DB_MASTER
);
48 if ( $this->hasOption( 'background' ) ) {
49 $backgroundMode = true;
50 } elseif ( $this->hasOption( 'quick' ) ) {
51 $backgroundMode = false;
53 $lb = MediaWikiServices
::getInstance()->getDBLoadBalancer();
54 $backgroundMode = $lb->getServerCount() > 1;
57 $actorQuery = ActorMigration
::newMigration()->getJoin( 'rev_user' );
59 $needSpecialQuery = ( $wgActorTableSchemaMigrationStage !== MIGRATION_OLD
&&
60 $wgActorTableSchemaMigrationStage !== MIGRATION_NEW
);
61 if ( $needSpecialQuery ) {
62 foreach ( $actorQuery['joins'] as &$j ) {
63 $j[0] = 'JOIN'; // replace LEFT JOIN
68 if ( $backgroundMode ) {
69 $this->output( "Using replication-friendly background mode...\n" );
71 $dbr = $this->getDB( DB_REPLICA
);
73 $lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __METHOD__
);
75 $start = microtime( true );
77 for ( $min = 0; $min <= $lastUser; $min +
= $chunkSize ) {
78 $max = $min +
$chunkSize;
80 if ( $needSpecialQuery ) {
81 // Use separate subqueries to collect counts with the old
82 // and new schemas, to avoid having to do whole-table scans.
83 $result = $dbr->select(
87 . $dbr->selectSQLText(
88 [ 'revision', 'revision_actor_temp' ],
89 [ 'rev_user', 'ct' => 'COUNT(*)' ],
91 "rev_user > $min AND rev_user <= $max",
92 'revactor_rev' => null,
95 [ 'GROUP BY' => 'rev_user' ],
96 [ 'revision_actor_temp' => [ 'LEFT JOIN', 'revactor_rev = rev_id' ] ]
99 . $dbr->selectSQLText(
100 [ 'revision' ] +
$actorQuery['tables'],
101 [ 'actor_user', 'ct' => 'COUNT(*)' ],
102 "actor_user > $min AND actor_user <= $max",
104 [ 'GROUP BY' => 'actor_user' ],
108 [ 'user_id', 'user_editcount' => 'COALESCE(rev1.ct,0) + COALESCE(rev2.ct,0)' ],
109 "user_id > $min AND user_id <= $max",
113 'rev1' => [ 'LEFT JOIN', 'user_id = rev_user' ],
114 'rev2' => [ 'LEFT JOIN', 'user_id = actor_user' ],
118 $revUser = $actorQuery['fields']['rev_user'];
119 $result = $dbr->select(
120 [ 'user', 'rev' => [ 'revision' ] +
$actorQuery['tables'] ],
121 [ 'user_id', 'user_editcount' => "COUNT($revUser)" ],
122 "user_id > $min AND user_id <= $max",
124 [ 'GROUP BY' => 'user_id' ],
125 [ 'rev' => [ 'LEFT JOIN', "user_id = $revUser" ] ] +
$actorQuery['joins']
129 foreach ( $result as $row ) {
130 $dbw->update( 'user',
131 [ 'user_editcount' => $row->user_editcount
],
132 [ 'user_id' => $row->user_id
],
137 $delta = microtime( true ) - $start;
138 $rate = ( $delta == 0.0 ) ?
0.0 : $migrated / $delta;
139 $this->output( sprintf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
142 min( $max, $lastUser ) / $lastUser * 100.0,
149 $this->output( "Using single-query mode...\n" );
151 $user = $dbw->tableName( 'user' );
152 if ( $needSpecialQuery ) {
153 $subquery1 = $dbw->selectSQLText(
154 [ 'revision', 'revision_actor_temp' ],
157 'user_id = rev_user',
158 'revactor_rev' => null,
162 [ 'revision_actor_temp' => [ 'LEFT JOIN', 'revactor_rev = rev_id' ] ]
164 $subquery2 = $dbw->selectSQLText(
165 [ 'revision' ] +
$actorQuery['tables'],
167 'user_id = actor_user',
173 "UPDATE $user SET user_editcount=($subquery1) + ($subquery2)",
177 $subquery = $dbw->selectSQLText(
178 [ 'revision' ] +
$actorQuery['tables'],
180 [ 'user_id = ' . $actorQuery['fields']['rev_user'] ],
185 $dbw->query( "UPDATE $user SET user_editcount=($subquery)", __METHOD__
);
189 $this->output( "Done!\n" );
193 $maintClass = InitEditCount
::class;
194 require_once RUN_MAINTENANCE_IF_MAIN
;