Merge "[FileBackend] Tweaked TempFSFile::bind() to handle __get()."

[lhc/web/wiklou.git] / maintenance / populateRevisionLength.php

diff --git a/maintenance/populateRevisionLength.php b/maintenance/populateRevisionLength.php
index 2ee6779..07c395f 100644 (file)
--- a/maintenance/populateRevisionLength.php
+++ b/maintenance/populateRevisionLength.php
@@ -1,5 +1,5 @@
 <?php
-/*
+/**
  * Populates the rev_len field for old revisions created before MW 1.10.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -17,74 +17,87 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  * http://www.gnu.org/copyleft/gpl.html
  *
+ * @file
  * @ingroup Maintenance
  */
 
-require_once( dirname(__FILE__) . '/Maintenance.php' );
+require_once( __DIR__ . '/Maintenance.php' );
 
-class PopulateRevisionLength extends Maintenance {
+/**
+ * Maintenance script that populates the rev_len field for old revisions
+ * created before MW 1.10.
+ *
+ * @ingroup Maintenance
+ */
+class PopulateRevisionLength extends LoggedUpdateMaintenance {
        public function __construct() {
                parent::__construct();
-               $this->mDescription = "Populates rev_len";
+               $this->mDescription = "Populates the rev_len field";
                $this->setBatchSize( 200 );
        }
 
-       public function execute() {
-               $db = wfGetDB( DB_MASTER );
+       protected function getUpdateKey() {
+               return 'populate rev_len';
+       }
+
+       protected function updateSkippedMessage() {
+               return 'rev_len column of revision table already populated.';
+       }
+
+       public function doDBUpdates() {
+               $db = $this->getDB( DB_MASTER );
                if ( !$db->tableExists( 'revision' ) ) {
                        $this->error( "revision table does not exist", true );
                }
                $this->output( "Populating rev_len column\n" );
-               $start = $db->selectField( 'revision', 'MIN(rev_id)', false, __FUNCTION__ );
-               $end = $db->selectField( 'revision', 'MAX(rev_id)', false, __FUNCTION__ );
-               if( is_null( $start ) || is_null( $end ) ){
+
+               $start = $db->selectField( 'revision', 'MIN(rev_id)', false, __METHOD__ );
+               $end = $db->selectField( 'revision', 'MAX(rev_id)', false, __METHOD__ );
+               if ( !$start || !$end ) {
                        $this->output( "...revision table seems to be empty.\n" );
-                       $db->insert( 'updatelog',
-                               array( 'ul_key' => 'populate rev_len' ),
-                               __METHOD__,
-                               'IGNORE' );
-                       return;
+                       return true;
                }
+
                # Do remaining chunks
                $blockStart = intval( $start );
                $blockEnd = intval( $start ) + $this->mBatchSize - 1;
                $count = 0;
-               while( $blockStart <= $end ) {
+               $missing = 0;
+               while ( $blockStart <= $end ) {
                        $this->output( "...doing rev_id from $blockStart to $blockEnd\n" );
                        $res = $db->select( 'revision',
-                                           Revision::selectFields(),
-                                           array( "rev_id >= $blockStart",
+                                               Revision::selectFields(),
+                                               array( "rev_id >= $blockStart",
                                                   "rev_id <= $blockEnd",
                                                   "rev_len IS NULL" ),
-                                           __METHOD__ );
+                                               __METHOD__ );
                        # Go through and update rev_len from these rows.
-                       foreach( $res as $row ) {
+                       foreach ( $res as $row ) {
                                $rev = new Revision( $row );
-                               $text = $rev->getRawText();
-                               # Update the row...
-                               $db->update( 'revision',
-                                            array( 'rev_len' => strlen( $text ) ),
-                                            array( 'rev_id' => $row->rev_id ),
-                                            __METHOD__ );
-                               $count++;
+                               $content = $rev->getContent();
+                               if ( !$content ) {
+                                       # This should not happen, but sometimes does (bug 20757)
+                                       $this->output( "Content of revision {$row->rev_id} unavailable!\n" );
+                                       $missing++;
+                               }
+                               else {
+                                       # Update the row...
+                                       $db->update( 'revision',
+                                                        array( 'rev_len' => $content->getSize() ),
+                                                        array( 'rev_id' => $row->rev_id ),
+                                                        __METHOD__ );
+                                       $count++;
+                               }
                        }
                        $blockStart += $this->mBatchSize;
                        $blockEnd += $this->mBatchSize;
-                       wfWaitForSlaves( 5 );
-               }
-               $logged = $db->insert( 'updatelog',
-                       array( 'ul_key' => 'populate rev_len' ),
-                       __METHOD__,
-                       'IGNORE' );
-               if( $logged ) {
-                       $this->output( "rev_len population complete ... {$count} rows changed\n" );
-                       return true;
-               } else {
-                       $this->output( "Could not insert rev_len population row.\n" );
-                       return false;
+                       wfWaitForSlaves();
                }
+
+               $this->output( "rev_len population complete ... {$count} rows changed ({$missing} missing)\n" );
+               return true;
        }
 }
 
 $maintClass = "PopulateRevisionLength";
-require_once( DO_MAINTENANCE );
+require_once( RUN_MAINTENANCE_IF_MAIN );