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<?php
/**
* 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
*/
use MediaWiki\Maintenance\LoggedUpdateMaintenance;
// @codeCoverageIgnoreStart
require_once __DIR__ . '/Maintenance.php';
// @codeCoverageIgnoreEnd
/**
* Populate and improve accuracy of change_tag_def statistics.
*
* @ingroup Maintenance
*/
class PopulateChangeTagDef extends LoggedUpdateMaintenance {
public function __construct() {
parent::__construct();
$this->addDescription( 'Populate and improve accuracy of change_tag_def statistics' );
$this->addOption( 'dry-run', 'Print debug info instead of actually deleting' );
$this->setBatchSize( 1000 );
$this->addOption(
'sleep',
'Sleep time (in seconds) between every batch, defaults to zero',
false,
true
);
$this->addOption( 'populate-only', 'Do not update change_tag_def table' );
$this->addOption( 'set-user-tags-only', 'Only update ctd_user_defined from valid_tag table' );
}
/** @inheritDoc */
protected function doDBUpdates() {
$this->setBatchSize( $this->getOption( 'batch-size', $this->getBatchSize() ) );
$dbw = $this->getDB( DB_PRIMARY );
if ( $dbw->fieldExists(
'change_tag',
'ct_tag',
__METHOD__
)
) {
if ( $this->hasOption( 'set-user-tags-only' ) ) {
$this->setUserDefinedTags();
return true;
}
if ( !$this->hasOption( 'populate-only' ) ) {
$this->updateCountTag();
}
$this->backpopulateChangeTagId();
$this->setUserDefinedTags();
} else {
$this->updateCountTagId();
}
// TODO: Implement
// $this->cleanZeroCountRows();
return true;
}
private function setUserDefinedTags() {
$dbw = $this->getDB( DB_PRIMARY );
$userTags = null;
if ( $dbw->tableExists( 'valid_tag', __METHOD__ ) ) {
$userTags = $dbw->newSelectQueryBuilder()
->select( 'vt_tag' )
->from( 'valid_tag' )
->caller( __METHOD__ )->fetchFieldValues();
}
if ( !$userTags ) {
$this->output( "No user defined tags to set, moving on...\n" );
return;
}
if ( $this->hasOption( 'dry-run' ) ) {
$this->output(
'These tags will have ctd_user_defined=1 : ' . implode( ', ', $userTags ) . "\n"
);
return;
}
$dbw->newUpdateQueryBuilder()
->update( 'change_tag_def' )
->set( [ 'ctd_user_defined' => 1 ] )
->where( [ 'ctd_name' => $userTags ] )
->caller( __METHOD__ )
->execute();
$this->waitForReplication();
$this->output( "Finished setting user defined tags in change_tag_def table\n" );
}
private function updateCountTagId() {
$dbr = $this->getReplicaDB();
// This query can be pretty expensive, don't run it on master
$res = $dbr->newSelectQueryBuilder()
->select( [ 'ct_tag_id', 'hitcount' => 'count(*)' ] )
->from( 'change_tag' )
->groupBy( 'ct_tag_id' )
->caller( __METHOD__ )->fetchResultSet();
$dbw = $this->getPrimaryDB();
foreach ( $res as $row ) {
if ( !$row->ct_tag_id ) {
continue;
}
if ( $this->hasOption( 'dry-run' ) ) {
$this->output( 'This row will be updated: ' . implode( ', ', $row ) . "\n" );
continue;
}
$dbw->newUpdateQueryBuilder()
->update( 'change_tag_def' )
->set( [ 'ctd_count' => $row->hitcount ] )
->where( [ 'ctd_id' => $row->ct_tag_id ] )
->caller( __METHOD__ )
->execute();
}
$this->waitForReplication();
}
private function updateCountTag() {
$dbr = $this->getReplicaDB();
// This query can be pretty expensive, don't run it on master
$res = $dbr->newSelectQueryBuilder()
->select( [ 'ct_tag', 'hitcount' => 'count(*)' ] )
->from( 'change_tag' )
->groupBy( 'ct_tag' )
->caller( __METHOD__ )->fetchResultSet();
$dbw = $this->getPrimaryDB();
foreach ( $res as $row ) {
// Hygiene check
if ( !$row->ct_tag ) {
continue;
}
if ( $this->hasOption( 'dry-run' ) ) {
$this->output( 'This row will be updated: ' . $row->ct_tag . $row->hitcount . "\n" );
continue;
}
$dbw->newInsertQueryBuilder()
->insertInto( 'change_tag_def' )
->row( [
'ctd_name' => $row->ct_tag,
'ctd_user_defined' => 0,
'ctd_count' => $row->hitcount
] )
->onDuplicateKeyUpdate()
->uniqueIndexFields( [ 'ctd_name' ] )
->set( [ 'ctd_count' => $row->hitcount ] )
->caller( __METHOD__ )->execute();
}
$this->waitForReplication();
}
private function backpopulateChangeTagId() {
$dbr = $this->getReplicaDB();
$changeTagDefs = $dbr->newSelectQueryBuilder()
->select( [ 'ctd_name', 'ctd_id' ] )
->from( 'change_tag_def' )
->orderBy( 'ctd_id' )
->caller( __METHOD__ )->fetchResultSet();
foreach ( $changeTagDefs as $row ) {
$this->backpopulateChangeTagPerTag( $row->ctd_name, $row->ctd_id );
}
}
private function backpopulateChangeTagPerTag( string $tagName, int $tagId ) {
$dbr = $this->getReplicaDB();
$dbw = $this->getPrimaryDB();
$sleep = (int)$this->getOption( 'sleep', 0 );
$lastId = 0;
$this->output( "Starting to add ct_tag_id = {$tagId} for ct_tag = {$tagName}\n" );
while ( true ) {
// Given that indexes might not be there, it's better to use replica
$ids = $dbr->newSelectQueryBuilder()
->select( 'ct_id' )
->from( 'change_tag' )
->where( [ 'ct_tag' => $tagName, 'ct_tag_id' => null, $dbr->expr( 'ct_id', '>', $lastId ) ] )
->orderBy( 'ct_id' )
->limit( $this->getBatchSize() )
->caller( __METHOD__ )->fetchFieldValues();
if ( !$ids ) {
break;
}
$lastId = end( $ids );
if ( $this->hasOption( 'dry-run' ) ) {
$this->output(
"These ids will be changed to have \"{$tagId}\" as tag id: " . implode( ', ', $ids ) . "\n"
);
continue;
} else {
$this->output( "Updating ct_tag_id = {$tagId} up to row ct_id = {$lastId}\n" );
}
$dbw->newUpdateQueryBuilder()
->update( 'change_tag' )
->set( [ 'ct_tag_id' => $tagId ] )
->where( [ 'ct_id' => $ids ] )
->caller( __METHOD__ )
->execute();
$this->waitForReplication();
if ( $sleep > 0 ) {
sleep( $sleep );
}
}
$this->output( "Finished adding ct_tag_id = {$tagId} for ct_tag = {$tagName}\n" );
}
/** @inheritDoc */
protected function getUpdateKey() {
return __CLASS__;
}
}
// @codeCoverageIgnoreStart
$maintClass = PopulateChangeTagDef::class;
require_once RUN_MAINTENANCE_IF_MAIN;
// @codeCoverageIgnoreEnd