maintenance/rebuildLocalisationCache.php

   1 <?php
   2
   3 /**
   4  * Rebuild the localisation cache. Useful if you disabled automatic updates
   5  * using $wgLocalisationCacheConf['manualRecache'] = true;
   6  *
   7  * Usage:
   8  *    php rebuildLocalisationCache.php [--force]
   9  *
  10  * Use --force to rebuild all files, even the ones that are not out of date.
  11  * Use --threads=N to fork more threads.
  12  */
  13
  14 require( dirname(__FILE__).'/commandLine.inc' );
  15 ini_set( 'memory_limit', '200M' );
  16
  17 $force = isset( $options['force'] );
  18 $threads = intval( isset( $options['threads'] ) ? $options['threads'] : 1 );
  19
  20 $conf = $wgLocalisationCacheConf;
  21 $conf['manualRecache'] = false; // Allow fallbacks to create CDB files
  22 if ( $force ) {
  23         $conf['forceRecache'] = true;
  24 }
  25 $lc = new LocalisationCache_BulkLoad( $conf );
  26
  27 $codes = array_keys( Language::getLanguageNames( true ) );
  28 sort( $codes );
  29
  30 // Initialise and split into chunks
  31 $numRebuilt = 0;
  32 $total = count($codes);
  33 $chunks = array_chunk( $codes, ceil(count($codes)/$threads) );
  34 $pids = array();
  35
  36 foreach ( $chunks as $codes ) {
  37         // Do not fork for only one thread
  38         $pid = ( $threads > 1 ) ? pcntl_fork() : -1;
  39
  40         if ( $pid === 0 ) {
  41                 // Child
  42                 doRebuild( $codes, $numRebuilt, $lc, $force );
  43                 exit();
  44         } elseif ($pid === -1) {
  45                 // Fork failed or one thread, do it serialized
  46                 doRebuild( $codes, $numRebuilt, $lc, $force );
  47         } else {
  48                 // Main thread
  49                 $pids[] = $pid;
  50         }
  51 }
  52
  53 // Wait for all children
  54 foreach ( $pids as $pid ) pcntl_waitpid($pid, $status);
  55
  56 echo "$numRebuilt languages rebuilt out of $total.\n";
  57 if ( $numRebuilt == 0 ) {
  58         echo "Use --force to rebuild the caches which are still fresh.\n";
  59 }
  60
  61 function doRebuild( $codes, &$numRebuilt, $lc, $force ) {
  62         foreach ( $codes as $code ) {
  63                 if ( $force || $lc->isExpired( $code ) ) {
  64                         echo "Rebuilding $code...\n";
  65                         $lc->recache( $code );
  66                         $numRebuilt++;
  67                 }
  68         }
  69 }