3e2c6c93376dd9ef7651ac3178304ef36d61f0eb
3 * Communications protocol.
4 * This is used by dumpTextPass.php when the --spawn option is present.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 * http://www.gnu.org/copyleft/gpl.html
22 * @ingroup Maintenance
25 require_once __DIR__
. '/Maintenance.php';
28 * Maintenance script used to fetch page text in a subprocess.
30 * @ingroup Maintenance
32 class FetchText
extends Maintenance
{
33 public function __construct() {
34 parent
::__construct();
35 $this->mDescription
= "Fetch the raw revision blob from an old_id.";
36 $this->mDescription
.= "\nNOTE: Export transformations are NOT applied. This is left to backupTextPass.php";
40 * returns a string containing the following in order:
43 * length of text (-1 on error = failure to retrieve/unserialize/gunzip/etc)
47 * note that that the text string itself is *not* followed by newline
49 public function execute() {
50 $db = wfGetDB( DB_SLAVE
);
51 $stdin = $this->getStdin();
52 while ( !feof( $stdin ) ) {
53 $line = fgets( $stdin );
54 if ( $line === false ) {
55 // We appear to have lost contact...
58 $textId = intval( $line );
59 $text = $this->doGetText( $db, $textId );
60 if ( $text === false ) {
61 # actual error, not zero-length text
64 $textLen = strlen( $text );
66 $this->output( $textId . "\n" . $textLen . "\n" . $text );
71 * May throw a database error if, say, the server dies during query.
72 * @param DatabaseBase $db
73 * @param int $id The old_id
76 private function doGetText( $db, $id ) {
78 $row = $db->selectRow( 'text',
79 array( 'old_text', 'old_flags' ),
80 array( 'old_id' => $id ),
82 $text = Revision
::getRevisionText( $row );
83 if ( $text === false ) {
91 $maintClass = "FetchText";
92 require_once RUN_MAINTENANCE_IF_MAIN
;