cb15755e92
The ANSI SQL default join type is INNER and this might save some line breaks here and there. Change-Id: Ibd39976f46ca3f9b71190d3b60b76ca085787a00
274 lines
8.6 KiB
PHP
274 lines
8.6 KiB
PHP
<?php
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/**
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* Query the list of contributors to a page
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*
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* Copyright © 2013 Wikimedia Foundation and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @since 1.23
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*/
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use MediaWiki\MediaWikiServices;
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use MediaWiki\Revision\RevisionRecord;
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/**
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* A query module to show contributors to a page
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*
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* @ingroup API
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* @since 1.23
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*/
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class ApiQueryContributors extends ApiQueryBase {
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/** We don't want to process too many pages at once (it hits cold
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* database pages too heavily), so only do the first MAX_PAGES input pages
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* in each API call (leaving the rest for continuation).
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*/
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const MAX_PAGES = 100;
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public function __construct( ApiQuery $query, $moduleName ) {
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// "pc" is short for "page contributors", "co" was already taken by the
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// GeoData extension's prop=coordinates.
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parent::__construct( $query, $moduleName, 'pc' );
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}
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public function execute() {
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global $wgActorTableSchemaMigrationStage;
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$db = $this->getDB();
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$params = $this->extractRequestParams();
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$this->requireMaxOneParameter( $params, 'group', 'excludegroup', 'rights', 'excluderights' );
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// Only operate on existing pages
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$pages = array_keys( $this->getPageSet()->getGoodTitles() );
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// Filter out already-processed pages
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if ( $params['continue'] !== null ) {
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$cont = explode( '|', $params['continue'] );
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$this->dieContinueUsageIf( count( $cont ) != 2 );
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$cont_page = (int)$cont[0];
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$pages = array_filter( $pages, function ( $v ) use ( $cont_page ) {
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return $v >= $cont_page;
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} );
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}
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if ( $pages === [] ) {
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// Nothing to do
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return;
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}
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// Apply MAX_PAGES, leaving any over the limit for a continue.
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sort( $pages );
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$continuePages = null;
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if ( count( $pages ) > self::MAX_PAGES ) {
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$continuePages = $pages[self::MAX_PAGES] . '|0';
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$pages = array_slice( $pages, 0, self::MAX_PAGES );
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}
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$result = $this->getResult();
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$revQuery = MediaWikiServices::getInstance()->getRevisionStore()->getQueryInfo();
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// For SCHEMA_COMPAT_READ_NEW, target indexes on the
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// revision_actor_temp table, otherwise on the revision table.
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$pageField = ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW )
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? 'revactor_page' : 'rev_page';
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$idField = ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW )
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? 'revactor_actor' : $revQuery['fields']['rev_user'];
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$countField = ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW )
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? 'revactor_actor' : $revQuery['fields']['rev_user_text'];
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// First, count anons
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$this->addTables( $revQuery['tables'] );
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$this->addJoinConds( $revQuery['joins'] );
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$this->addFields( [
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'page' => $pageField,
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'anons' => "COUNT(DISTINCT $countField)",
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] );
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$this->addWhereFld( $pageField, $pages );
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$this->addWhere( ActorMigration::newMigration()->isAnon( $revQuery['fields']['rev_user'] ) );
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$this->addWhere( $db->bitAnd( 'rev_deleted', RevisionRecord::DELETED_USER ) . ' = 0' );
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$this->addOption( 'GROUP BY', $pageField );
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$res = $this->select( __METHOD__ );
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foreach ( $res as $row ) {
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$fit = $result->addValue( [ 'query', 'pages', $row->page ],
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'anoncontributors', (int)$row->anons
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);
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if ( !$fit ) {
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// This not fitting isn't reasonable, so it probably means that
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// some other module used up all the space. Just set a dummy
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// continue and hope it works next time.
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$this->setContinueEnumParameter( 'continue',
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$params['continue'] ?? '0|0'
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);
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return;
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}
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}
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// Next, add logged-in users
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$this->resetQueryParams();
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$this->addTables( $revQuery['tables'] );
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$this->addJoinConds( $revQuery['joins'] );
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$this->addFields( [
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'page' => $pageField,
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'id' => $idField,
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// Non-MySQL databases don't like partial group-by
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'userid' => 'MAX(' . $revQuery['fields']['rev_user'] . ')',
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'username' => 'MAX(' . $revQuery['fields']['rev_user_text'] . ')',
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] );
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$this->addWhereFld( $pageField, $pages );
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$this->addWhere( ActorMigration::newMigration()->isNotAnon( $revQuery['fields']['rev_user'] ) );
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$this->addWhere( $db->bitAnd( 'rev_deleted', RevisionRecord::DELETED_USER ) . ' = 0' );
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$this->addOption( 'GROUP BY', [ $pageField, $idField ] );
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$this->addOption( 'LIMIT', $params['limit'] + 1 );
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// Force a sort order to ensure that properties are grouped by page
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// But only if rev_page is not constant in the WHERE clause.
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if ( count( $pages ) > 1 ) {
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$this->addOption( 'ORDER BY', [ 'page', 'id' ] );
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} else {
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$this->addOption( 'ORDER BY', 'id' );
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}
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$limitGroups = [];
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if ( $params['group'] ) {
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$excludeGroups = false;
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$limitGroups = $params['group'];
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} elseif ( $params['excludegroup'] ) {
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$excludeGroups = true;
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$limitGroups = $params['excludegroup'];
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} elseif ( $params['rights'] ) {
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$excludeGroups = false;
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foreach ( $params['rights'] as $r ) {
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$limitGroups = array_merge( $limitGroups, User::getGroupsWithPermission( $r ) );
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}
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// If no group has the rights requested, no need to query
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if ( !$limitGroups ) {
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if ( $continuePages !== null ) {
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// But we still need to continue for the next page's worth
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// of anoncontributors
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$this->setContinueEnumParameter( 'continue', $continuePages );
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}
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return;
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}
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} elseif ( $params['excluderights'] ) {
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$excludeGroups = true;
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foreach ( $params['excluderights'] as $r ) {
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$limitGroups = array_merge( $limitGroups, User::getGroupsWithPermission( $r ) );
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}
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}
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if ( $limitGroups ) {
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$limitGroups = array_unique( $limitGroups );
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$this->addTables( 'user_groups' );
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$this->addJoinConds( [ 'user_groups' => [
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$excludeGroups ? 'LEFT OUTER JOIN' : 'JOIN',
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[
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'ug_user=' . $revQuery['fields']['rev_user'],
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'ug_group' => $limitGroups,
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'ug_expiry IS NULL OR ug_expiry >= ' . $db->addQuotes( $db->timestamp() )
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]
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] ] );
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$this->addWhereIf( 'ug_user IS NULL', $excludeGroups );
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}
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if ( $params['continue'] !== null ) {
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$cont = explode( '|', $params['continue'] );
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$this->dieContinueUsageIf( count( $cont ) != 2 );
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$cont_page = (int)$cont[0];
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$cont_id = (int)$cont[1];
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$this->addWhere(
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"$pageField > $cont_page OR " .
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"($pageField = $cont_page AND " .
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"$idField >= $cont_id)"
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);
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}
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$res = $this->select( __METHOD__ );
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$count = 0;
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foreach ( $res as $row ) {
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if ( ++$count > $params['limit'] ) {
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// We've reached the one extra which shows that
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// there are additional pages to be had. Stop here...
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$this->setContinueEnumParameter( 'continue', $row->page . '|' . $row->id );
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return;
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}
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$fit = $this->addPageSubItem( $row->page,
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[ 'userid' => (int)$row->userid, 'name' => $row->username ],
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'user'
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);
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if ( !$fit ) {
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$this->setContinueEnumParameter( 'continue', $row->page . '|' . $row->id );
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return;
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}
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}
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if ( $continuePages !== null ) {
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$this->setContinueEnumParameter( 'continue', $continuePages );
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}
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}
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public function getCacheMode( $params ) {
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return 'public';
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}
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public function getAllowedParams() {
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$userGroups = User::getAllGroups();
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$userRights = User::getAllRights();
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return [
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'group' => [
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ApiBase::PARAM_TYPE => $userGroups,
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ApiBase::PARAM_ISMULTI => true,
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],
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'excludegroup' => [
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ApiBase::PARAM_TYPE => $userGroups,
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ApiBase::PARAM_ISMULTI => true,
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],
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'rights' => [
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ApiBase::PARAM_TYPE => $userRights,
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ApiBase::PARAM_ISMULTI => true,
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],
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'excluderights' => [
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ApiBase::PARAM_TYPE => $userRights,
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ApiBase::PARAM_ISMULTI => true,
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],
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'limit' => [
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ApiBase::PARAM_DFLT => 10,
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ApiBase::PARAM_TYPE => 'limit',
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ApiBase::PARAM_MIN => 1,
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ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
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ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
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],
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'continue' => [
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ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
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],
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];
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}
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protected function getExamplesMessages() {
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return [
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'action=query&prop=contributors&titles=Main_Page'
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=> 'apihelp-query+contributors-example-simple',
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];
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}
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public function getHelpUrls() {
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return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Contributors';
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}
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}
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