X-Git-Url: http://git.heureux-cyclage.org/?a=blobdiff_plain;f=maintenance%2FpopulateRevisionLength.php;h=b73ac7f270da219b956756f6398a7a16f10ae023;hb=5e843cca772f67faaacc8967a48d8bf964b5ef41;hp=3c69125a978dd68b67946a9d076f27588fed9f14;hpb=c4d81e6c1e3d3aef7a21fbd704a94965116afebd;p=lhc%2Fweb%2Fwiklou.git

diff --git a/maintenance/populateRevisionLength.php b/maintenance/populateRevisionLength.php
index 3c69125a97..b73ac7f270 100644
--- a/maintenance/populateRevisionLength.php
+++ b/maintenance/populateRevisionLength.php
@@ -1,6 +1,7 @@
 <?php
 /**
- * Populates the rev_len field for old revisions created before MW 1.10.
+ * Populates the rev_len and ar_len fields for old revisions created
+ * before MW 1.10.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -24,86 +25,128 @@
 require_once __DIR__ . '/Maintenance.php';
 
 /**
- * Maintenance script that populates the rev_len field for old revisions
- * created before MW 1.10.
+ * Maintenance script that populates the rev_len and ar_len fields
+ * for old revisions created before MW 1.10.
  *
  * @ingroup Maintenance
  */
 class PopulateRevisionLength extends LoggedUpdateMaintenance {
 	public function __construct() {
 		parent::__construct();
-		$this->mDescription = "Populates the rev_len field";
+		$this->mDescription = "Populates the rev_len and ar_len fields";
 		$this->setBatchSize( 200 );
 	}
 
 	protected function getUpdateKey() {
-		return 'populate rev_len';
-	}
-
-	protected function updateSkippedMessage() {
-		return 'rev_len column of revision table already populated.';
+		return 'populate rev_len and ar_len';
 	}
 
 	public function doDBUpdates() {
 		$db = $this->getDB( DB_MASTER );
 		if ( !$db->tableExists( 'revision' ) ) {
 			$this->error( "revision table does not exist", true );
+		} elseif ( !$db->tableExists( 'archive' ) ) {
+			$this->error( "archive table does not exist", true );
 		} elseif ( !$db->fieldExists( 'revision', 'rev_len', __METHOD__ ) ) {
 			$this->output( "rev_len column does not exist\n\n", true );
+
 			return false;
 		}
 
 		$this->output( "Populating rev_len column\n" );
+		$rev = $this->doLenUpdates( 'revision', 'rev_id', 'rev', Revision::selectFields() );
+
+		$this->output( "Populating ar_len column\n" );
+		$ar = $this->doLenUpdates( 'archive', 'ar_id', 'ar', Revision::selectArchiveFields() );
+
+		$this->output( "rev_len and ar_len population complete "
+			. "[$rev revision rows, $ar archive rows].\n" );
+
+		return true;
+	}
 
-		$start = $db->selectField( 'revision', 'MIN(rev_id)', false, __METHOD__ );
-		$end = $db->selectField( 'revision', 'MAX(rev_id)', false, __METHOD__ );
+	/**
+	 * @param string $table
+	 * @param string $idCol
+	 * @param string $prefix
+	 * @param array $fields
+	 * @return int
+	 */
+	protected function doLenUpdates( $table, $idCol, $prefix, $fields ) {
+		$db = $this->getDB( DB_MASTER );
+		$start = $db->selectField( $table, "MIN($idCol)", false, __METHOD__ );
+		$end = $db->selectField( $table, "MAX($idCol)", false, __METHOD__ );
 		if ( !$start || !$end ) {
-			$this->output( "...revision table seems to be empty.\n" );
-			return true;
+			$this->output( "...$table table seems to be empty.\n" );
+
+			return 0;
 		}
 
 		# Do remaining chunks
 		$blockStart = intval( $start );
 		$blockEnd = intval( $start ) + $this->mBatchSize - 1;
 		$count = 0;
-		$missing = 0;
-		$fields = Revision::selectFields();
+
 		while ( $blockStart <= $end ) {
-			$this->output( "...doing rev_id from $blockStart to $blockEnd\n" );
+			$this->output( "...doing $idCol from $blockStart to $blockEnd\n" );
 			$res = $db->select(
-				'revision',
+				$table,
 				$fields,
 				array(
-					"rev_id >= $blockStart",
-					"rev_id <= $blockEnd",
-					"rev_len IS NULL"
+					"$idCol >= $blockStart",
+					"$idCol <= $blockEnd",
+					"{$prefix}_len IS NULL"
 				),
 				__METHOD__
 			);
+
+			$db->begin( __METHOD__ );
 			# Go through and update rev_len from these rows.
 			foreach ( $res as $row ) {
-				$rev = new Revision( $row );
-				$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__ );
+				if ( $this->upgradeRow( $row, $table, $idCol, $prefix ) ) {
 					$count++;
 				}
 			}
+			$db->commit( __METHOD__ );
+
 			$blockStart += $this->mBatchSize;
 			$blockEnd += $this->mBatchSize;
 			wfWaitForSlaves();
 		}
 
-		$this->output( "rev_len population complete ... {$count} rows changed ({$missing} missing)\n" );
+		return $count;
+	}
+
+	/**
+	 * @param stdClass $row
+	 * @param string $table
+	 * @param string $idCol
+	 * @param string $prefix
+	 * @return bool
+	 */
+	protected function upgradeRow( $row, $table, $idCol, $prefix ) {
+		$db = $this->getDB( DB_MASTER );
+
+		$rev = ( $table === 'archive' )
+			? Revision::newFromArchiveRow( $row )
+			: new Revision( $row );
+
+		$content = $rev->getContent();
+		if ( !$content ) {
+			# This should not happen, but sometimes does (bug 20757)
+			$id = $row->$idCol;
+			$this->output( "Content of $table $id unavailable!\n" );
+
+			return false;
+		}
+
+		# Update the row...
+		$db->update( $table,
+			array( "{$prefix}_len" => $content->getSize() ),
+			array( $idCol => $row->$idCol ),
+			__METHOD__
+		);
+
 		return true;
 	}
 }