maintenance/copyJobQueue.php

   1 <?php
   2 /**
   3  * Copy all jobs from one job queue system to another.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Maintenance
  22  */
  23
  24 require_once( __DIR__ . '/Maintenance.php' );
  25
  26 /**
  27  * Copy all jobs from one job queue system to another.
  28  * This uses an ad-hoc $wgJobQueueMigrationConfig setting,
  29  * which is a map of queue system names to JobQueue::factory() parameters.
  30  * The parameters should not have wiki or type settings and thus partial.
  31  *
  32  * @ingroup Maintenance
  33  */
  34 class CopyJobQueue extends Maintenance {
  35         public function __construct() {
  36                 parent::__construct();
  37                 $this->mDescription = "Copy jobs from one queue system to another.";
  38                 $this->addOption( 'src', 'Key to $wgJobQueueMigrationConfig for source', true, true );
  39                 $this->addOption( 'dst', 'Key to $wgJobQueueMigrationConfig for destination', true, true );
  40                 $this->addOption( 'type', 'Types of jobs to copy (use "all" for all)', true, true );
  41                 $this->setBatchSize( 500 );
  42         }
  43
  44         public function execute() {
  45                 global $wgJobQueueMigrationConfig;
  46
  47                 $srcKey = $this->getOption( 'src' );
  48                 $dstKey = $this->getOption( 'dst' );
  49
  50                 if ( !isset( $wgJobQueueMigrationConfig[$srcKey] ) ) {
  51                         $this->error( "\$wgJobQueueMigrationConfig not set for '$srcKey'.", 1 );
  52                 } elseif ( !isset( $wgJobQueueMigrationConfig[$dstKey] ) ) {
  53                         $this->error( "\$wgJobQueueMigrationConfig not set for '$dstKey'.", 1 );
  54                 }
  55
  56                 $types = ( $this->getOption( 'type' ) === 'all' )
  57                         ? JobQueueGroup::singleton()->getQueueTypes()
  58                         : array( $this->getOption( 'type' ) );
  59
  60                 foreach ( $types as $type ) {
  61                         $baseConfig = array( 'type' => $type, 'wiki' => wfWikiID() );
  62                         $src = JobQueue::factory( $baseConfig + $wgJobQueueMigrationConfig[$srcKey] );
  63                         $dst = JobQueue::factory( $baseConfig + $wgJobQueueMigrationConfig[$dstKey] );
  64
  65                         list( $total, $totalOK ) = $this->copyJobs( $src, $dst, $src->getAllQueuedJobs() );
  66                         $this->output( "Copied $totalOK/$total queued $type jobs.\n" );
  67
  68                         list( $total, $totalOK ) = $this->copyJobs( $src, $dst, $src->getAllDelayedJobs() );
  69                         $this->output( "Copied $totalOK/$total delayed $type jobs.\n" );
  70                 }
  71         }
  72
  73         protected function copyJobs( JobQueue $src, JobQueue $dst, $jobs ) {
  74                 $total = 0;
  75                 $totalOK = 0;
  76                 $batch = array();
  77                 foreach ( $jobs as $job ) {
  78                         ++$total;
  79                         $batch[] = $job;
  80                         if ( count( $batch ) >= $this->mBatchSize ) {
  81                                 if ( $dst->push( $batch ) ) {
  82                                         $totalOK += count( $batch );
  83                                 }
  84                                 $batch = array();
  85                                 $dst->waitForBackups();
  86                         }
  87                 }
  88                 if ( count( $batch ) ) {
  89                         if ( $dst->push( $batch ) ) {
  90                                 $totalOK += count( $batch );
  91                         }
  92                         $dst->waitForBackups();
  93                 }
  94                 return array( $total, $totalOK );
  95         }
  96 }
  97
  98 $maintClass = 'CopyJobQueue';
  99 require_once( RUN_MAINTENANCE_IF_MAIN );