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 class InitEditCount
extends Maintenance
{
28 public function __construct() {
29 parent
::__construct();
30 $this->addOption( 'quick', 'Force the update to be done in a single query' );
31 $this->addOption( 'background', 'Force replication-friendly mode; may be inefficient but
32 avoids locking tables or lagging replica DBs with large updates;
33 calculates counts on a replica DB if possible.
35 Background mode will be automatically used if multiple servers are listed
36 in the load balancer, usually indicating a replication environment.' );
37 $this->addDescription( 'Batch-recalculate user_editcount fields from the revision table' );
40 public function execute() {
41 global $wgActorTableSchemaMigrationStage;
43 $dbw = $this->getDB( DB_MASTER
);
46 if ( $this->hasOption( 'background' ) ) {
47 $backgroundMode = true;
48 } elseif ( $this->hasOption( 'quick' ) ) {
49 $backgroundMode = false;
51 $backgroundMode = wfGetLB()->getServerCount() > 1;
54 $actorQuery = ActorMigration
::newMigration()->getJoin( 'rev_user' );
56 $needSpecialQuery = ( $wgActorTableSchemaMigrationStage !== MIGRATION_OLD
&&
57 $wgActorTableSchemaMigrationStage !== MIGRATION_NEW
);
58 if ( $needSpecialQuery ) {
59 foreach ( $actorQuery['joins'] as &$j ) {
60 $j[0] = 'JOIN'; // replace LEFT JOIN
65 if ( $backgroundMode ) {
66 $this->output( "Using replication-friendly background mode...\n" );
68 $dbr = $this->getDB( DB_REPLICA
);
70 $lastUser = $dbr->selectField( 'user', 'MAX(user_id)', '', __METHOD__
);
72 $start = microtime( true );
74 for ( $min = 0; $min <= $lastUser; $min +
= $chunkSize ) {
75 $max = $min +
$chunkSize;
77 if ( $needSpecialQuery ) {
78 // Use separate subqueries to collect counts with the old
79 // and new schemas, to avoid having to do whole-table scans.
80 $result = $dbr->select(
84 . $dbr->selectSQLText(
85 [ 'revision', 'revision_actor_temp' ],
86 [ 'rev_user', 'ct' => 'COUNT(*)' ],
88 "rev_user > $min AND rev_user <= $max",
89 'revactor_rev' => null,
92 [ 'GROUP BY' => 'rev_user' ],
93 [ 'revision_actor_temp' => [ 'LEFT JOIN', 'revactor_rev = rev_id' ] ]
96 . $dbr->selectSQLText(
97 [ 'revision' ] +
$actorQuery['tables'],
98 [ 'actor_user', 'ct' => 'COUNT(*)' ],
99 "actor_user > $min AND actor_user <= $max",
101 [ 'GROUP BY' => 'actor_user' ],
105 [ 'user_id', 'user_editcount' => 'COALESCE(rev1.ct,0) + COALESCE(rev2.ct,0)' ],
106 "user_id > $min AND user_id <= $max",
110 'rev1' => [ 'LEFT JOIN', 'user_id = rev_user' ],
111 'rev2' => [ 'LEFT JOIN', 'user_id = actor_user' ],
115 $revUser = $actorQuery['fields']['rev_user'];
116 $result = $dbr->select(
117 [ 'user', 'rev' => [ 'revision' ] +
$actorQuery['tables'] ],
118 [ 'user_id', 'user_editcount' => "COUNT($revUser)" ],
119 "user_id > $min AND user_id <= $max",
121 [ 'GROUP BY' => 'user_id' ],
122 [ 'rev' => [ 'LEFT JOIN', "user_id = $revUser" ] ] +
$actorQuery['joins']
126 foreach ( $result as $row ) {
127 $dbw->update( 'user',
128 [ 'user_editcount' => $row->user_editcount
],
129 [ 'user_id' => $row->user_id
],
134 $delta = microtime( true ) - $start;
135 $rate = ( $delta == 0.0 ) ?
0.0 : $migrated / $delta;
136 $this->output( sprintf( "%s %d (%0.1f%%) done in %0.1f secs (%0.3f accounts/sec).\n",
139 min( $max, $lastUser ) / $lastUser * 100.0,
146 $this->output( "Using single-query mode...\n" );
148 $user = $dbw->tableName( 'user' );
149 if ( $needSpecialQuery ) {
150 $subquery1 = $dbw->selectSQLText(
151 [ 'revision', 'revision_actor_temp' ],
154 'user_id = rev_user',
155 'revactor_rev' => null,
159 [ 'revision_actor_temp' => [ 'LEFT JOIN', 'revactor_rev = rev_id' ] ]
161 $subquery2 = $dbw->selectSQLText(
162 [ 'revision' ] +
$actorQuery['tables'],
164 'user_id = actor_user',
170 "UPDATE $user SET user_editcount=($subquery1) + ($subquery2)",
174 $subquery = $dbw->selectSQLText(
175 [ 'revision' ] +
$actorQuery['tables'],
177 [ 'user_id = ' . $actorQuery['fields']['rev_user'] ],
182 $dbw->query( "UPDATE $user SET user_editcount=($subquery)", __METHOD__
);
186 $this->output( "Done!\n" );
190 $maintClass = InitEditCount
::class;
191 require_once RUN_MAINTENANCE_IF_MAIN
;