X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=maintenance%2FfetchText.php;h=8d04adc6688c245fc840e397a6a12dda34f04e9f;hb=12a75b2f2600073d86cdeaf194e6b4c5c659b53f;hp=9c5a375154aa3f3cca84066c86b7624468d37cb3;hpb=dc1632d58ee3b016697667bfc003338141bc3ce7;p=lhc%2Fweb%2Fwiklou.git

diff --git a/maintenance/fetchText.php b/maintenance/fetchText.php
index 9c5a375154..8d04adc668 100644
--- a/maintenance/fetchText.php
+++ b/maintenance/fetchText.php
@@ -24,7 +24,9 @@
 
 require_once __DIR__ . '/Maintenance.php';
 
-use Wikimedia\Rdbms\IDatabase;
+use MediaWiki\MediaWikiServices;
+use MediaWiki\Storage\BlobAccessException;
+use MediaWiki\Storage\SqlBlobStore;
 
 /**
  * Maintenance script used to fetch page text in a subprocess.
@@ -32,14 +34,24 @@ use Wikimedia\Rdbms\IDatabase;
  * @ingroup Maintenance
  */
 class FetchText extends Maintenance {
+
 	public function __construct() {
 		parent::__construct();
-		$this->addDescription( "Fetch the raw revision blob from an old_id.\n" .
+
+		$this->addDescription( "Fetch the raw revision blob from a blob address.\n" .
+			"Integer IDs are interpreted as referring to text.old_id for backwards compatibility.\n" .
 			"NOTE: Export transformations are NOT applied. " .
-			"This is left to backupTextPass.php"
+			"This is left to dumpTextPass.php"
 		);
 	}
 
+	/**
+	 * @return SqlBlobStore
+	 */
+	private function getBlobStore() {
+		return MediaWikiServices::getInstance()->getBlobStore();
+	}
+
 	/**
 	 * returns a string containing the following in order:
 	 *   textid
@@ -51,7 +63,6 @@ class FetchText extends Maintenance {
 	 * note that the text string itself is *not* followed by newline
 	 */
 	public function execute() {
-		$db = $this->getDB( DB_REPLICA );
 		$stdin = $this->getStdin();
 		while ( !feof( $stdin ) ) {
 			$line = fgets( $stdin );
@@ -59,38 +70,31 @@ class FetchText extends Maintenance {
 				// We appear to have lost contact...
 				break;
 			}
-			$textId = intval( $line );
-			$text = $this->doGetText( $db, $textId );
-			if ( $text === false ) {
-				# actual error, not zero-length text
-				$textLen = "-1";
-			} else {
+			$blobAddress = trim( $line );
+
+			// Plain integers are supported for backwards compatibility with pre-MCR dumps.
+			if ( strpos( $blobAddress, ':' ) === false && is_numeric( $blobAddress ) ) {
+				$blobAddress = SqlBlobStore::makeAddressFromTextId( intval( $blobAddress ) );
+			}
+
+			try {
+				$text = $this->getBlobStore()->getBlob( $blobAddress );
 				$textLen = strlen( $text );
+			} catch ( BlobAccessException $ex ) {
+				// XXX: log $ex to stderr?
+				$textLen = '-1';
+				$text = '';
+			} catch ( InvalidArgumentException $ex ) {
+				// XXX: log $ex to stderr?
+				$textLen = '-1';
+				$text = '';
 			}
-			$this->output( $textId . "\n" . $textLen . "\n" . $text );
-		}
-	}
 
-	/**
-	 * May throw a database error if, say, the server dies during query.
-	 * @param IDatabase $db
-	 * @param int $id The old_id
-	 * @return string
-	 */
-	private function doGetText( $db, $id ) {
-		$id = intval( $id );
-		$row = $db->selectRow( 'text',
-			[ 'old_text', 'old_flags' ],
-			[ 'old_id' => $id ],
-			__METHOD__ );
-		$text = Revision::getRevisionText( $row );
-		if ( $text === false ) {
-			return false;
+			$this->output( $blobAddress . "\n" . $textLen . "\n" . $text );
 		}
-
-		return $text;
 	}
+
 }
 
-$maintClass = "FetchText";
+$maintClass = FetchText::class;
 require_once RUN_MAINTENANCE_IF_MAIN;