mirror of
https://github.com/YunoHost-Apps/mediawiki_ynh.git
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119 lines
3.7 KiB
PHP
119 lines
3.7 KiB
PHP
<?php
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/**
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* Pick a database that has pending jobs
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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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* @ingroup Maintenance
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*/
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require_once __DIR__ . '/Maintenance.php';
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/**
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* Maintenance script that picks a database that has pending jobs.
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*
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* @ingroup Maintenance
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*/
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class nextJobDB extends Maintenance {
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public function __construct() {
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parent::__construct();
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$this->mDescription = "Pick a database that has pending jobs";
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$this->addOption( 'type', "Search by job type", false, true );
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$this->addOption( 'types', "Space separated list of job types to search for", false, true );
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}
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public function execute() {
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global $wgJobTypesExcludedFromDefaultQueue;
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// job type required/picked
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if ( $this->hasOption( 'types' ) ) {
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$types = explode( ' ', $this->getOption( 'types' ) );
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} elseif ( $this->hasOption( 'type' ) ) {
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$types = array( $this->getOption( 'type' ) );
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} else {
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$types = false;
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}
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// Handle any required periodic queue maintenance
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$this->executeReadyPeriodicTasks();
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// Get all the queues with jobs in them
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$pendingDBs = JobQueueAggregator::singleton()->getAllReadyWikiQueues();
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if ( !count( $pendingDBs ) ) {
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return; // no DBs with jobs or cache is both empty and locked
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}
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do {
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$again = false;
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$candidates = array(); // list of (type, db)
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// Flatten the tree of candidates into a flat list so that a random
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// item can be selected, weighing each queue (type/db tuple) equally.
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foreach ( $pendingDBs as $type => $dbs ) {
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if (
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( is_array( $types ) && in_array( $type, $types ) ) ||
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( $types === false && !in_array( $type, $wgJobTypesExcludedFromDefaultQueue ) )
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) {
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foreach ( $dbs as $db ) {
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$candidates[] = array( $type, $db );
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}
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}
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}
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if ( !count( $candidates ) ) {
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return; // no jobs for this type
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}
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list( $type, $db ) = $candidates[mt_rand( 0, count( $candidates ) - 1 )];
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if ( JobQueueGroup::singleton( $db )->isQueueDeprioritized( $type ) ) {
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$pendingDBs[$type] = array_diff( $pendingDBs[$type], array( $db ) );
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$again = true;
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}
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} while ( $again );
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if ( $this->hasOption( 'types' ) ) {
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$this->output( $db . " " . $type . "\n" );
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} else {
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$this->output( $db . "\n" );
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}
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}
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/**
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* Do all ready periodic jobs for all databases every 5 minutes (and .1% of the time)
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* @return integer
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*/
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private function executeReadyPeriodicTasks() {
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global $wgLocalDatabases, $wgMemc;
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$count = 0;
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$memcKey = 'jobqueue:periodic:lasttime';
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$timestamp = (int)$wgMemc->get( $memcKey ); // UNIX timestamp or 0
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if ( ( time() - $timestamp ) > 300 || mt_rand( 0, 999 ) == 0 ) { // 5 minutes
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if ( $wgMemc->add( "$memcKey:rebuild", 1, 1800 ) ) { // lock
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foreach ( $wgLocalDatabases as $db ) {
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$count += JobQueueGroup::singleton( $db )->executeReadyPeriodicTasks();
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}
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$wgMemc->set( $memcKey, time() );
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$wgMemc->delete( "$memcKey:rebuild" ); // unlock
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}
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}
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return $count;
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}
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}
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$maintClass = "nextJobDb";
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require_once RUN_MAINTENANCE_IF_MAIN;
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