/**
* Script that postprocesses XML dumps from dumpBackup.php to add page text
*
- * Copyright © 2005 Brion Vibber <brion@pobox.com>, 2010 Alexandre Emsenhuber
+ * Copyright (C) 2005 Brion Vibber <brion@pobox.com>
* http://www.mediawiki.org/
*
* This program is free software; you can redistribute it and/or modify
class TextPassDumper extends BackupDumper {
var $prefetch = null;
var $input = "php://stdin";
+ var $history = WikiExporter::FULL;
var $fetchCount = 0;
var $prefetchCount = 0;
- var $lastTime = 0;
- var $pageCountLast = 0;
- var $revCountLast = 0;
var $prefetchCountLast = 0;
var $fetchCountLast = 0;
var $spawnRead = false;
var $spawnErr = false;
- var $ID = 0;
+ var $xmlwriterobj = false;
+
+ // when we spend more than maxTimeAllowed seconds on this run, we continue
+ // processing until we write out the next complete page, then save output file(s),
+ // rename it/them and open new one(s)
+ var $maxTimeAllowed = 0; // 0 = no limit
+ var $timeExceeded = false;
+ var $firstPageWritten = false;
+ var $lastPageWritten = false;
+ var $checkpointJustWritten = false;
+ var $checkpointFiles = array();
+
+ /**
+ * @var DatabaseBase
+ */
+ protected $db;
function initProgress( $history ) {
parent::initProgress();
- $this->ID = getmypid();
- $this->lastTime = $this->startTime;
+ $this->timeOfCheckpoint = $this->startTime;
}
function dump( $history, $text = WikiExporter::TEXT ) {
- # This shouldn't happen if on console... ;)
+ // This shouldn't happen if on console... ;)
header( 'Content-type: text/html; charset=UTF-8' );
- # Notice messages will foul up your XML output even if they're
- # relatively harmless.
+ // Notice messages will foul up your XML output even if they're
+ // relatively harmless.
if ( ini_get( 'display_errors' ) )
ini_set( 'display_errors', 'stderr' );
- $this->initProgress( $history );
+ $this->initProgress( $this->history );
$this->db = $this->backupDb();
- $this->readDump();
+ $this->egress = new ExportProgressFilter( $this->sink, $this );
+
+ // it would be nice to do it in the constructor, oh well. need egress set
+ $this->finalOptionCheck();
+
+ // we only want this so we know how to close a stream :-P
+ $this->xmlwriterobj = new XmlDumpWriter();
+
+ $input = fopen( $this->input, "rt" );
+ $result = $this->readDump( $input );
+
+ if ( WikiError::isError( $result ) ) {
+ throw new MWException( $result->getMessage() );
+ }
if ( $this->spawnProc ) {
$this->closeSpawn();
case 'stub':
$this->input = $url;
break;
+ case 'maxtime':
+ $this->maxTimeAllowed = intval($val)*60;
+ break;
+ case 'checkpointfile':
+ $this->checkpointFiles[] = $val;
+ break;
+ case 'current':
+ $this->history = WikiExporter::CURRENT;
+ break;
+ case 'full':
+ $this->history = WikiExporter::FULL;
+ break;
case 'spawn':
$this->spawn = true;
if ( $val ) {
*/
function showReport() {
if ( !$this->prefetch ) {
- return parent::showReport();
+ parent::showReport();
+ return;
}
if ( $this->reporting ) {
$now = wfTimestamp( TS_DB );
+ $nowts = wfTime();
$deltaAll = wfTime() - $this->startTime;
$deltaPart = wfTime() - $this->lastTime;
$this->pageCountPart = $this->pageCount - $this->pageCountLast;
$etats = wfTimestamp( TS_DB, intval( $eta ) );
if ( $this->fetchCount ) {
$fetchRate = 100.0 * $this->prefetchCount / $this->fetchCount;
- }
- else {
+ } else {
$fetchRate = '-';
}
$pageRate = $this->pageCount / $deltaAll;
if ( $deltaPart ) {
if ( $this->fetchCountLast ) {
$fetchRatePart = 100.0 * $this->prefetchCountLast / $this->fetchCountLast;
- }
- else {
+ } else {
$fetchRatePart = '-';
}
$pageRatePart = $this->pageCountPart / $deltaPart;
$pageRatePart = '-';
$revRatePart = '-';
}
- $this->progress( sprintf( "%s: %s (ID %d) %d pages (%0.1f|%0.1f/sec all|curr), %d revs (%0.1f|%0.1f/sec all|curr), %0.1f%%|%0.1f%% prefetched (all|curr), ETA %s [max %d]",-
+ $this->progress( sprintf( "%s: %s (ID %d) %d pages (%0.1f|%0.1f/sec all|curr), %d revs (%0.1f|%0.1f/sec all|curr), %0.1f%%|%0.1f%% prefetched (all|curr), ETA %s [max %d]",
$now, wfWikiID(), $this->ID, $this->pageCount, $pageRate, $pageRatePart, $this->revCount, $revRate, $revRatePart, $fetchRate, $fetchRatePart, $etats, $this->maxCount ) );
- $this->lastTime = $now;
- $this->partCountLast = $this->partCount;
+ $this->lastTime = $nowts;
$this->revCountLast = $this->revCount;
$this->prefetchCountLast = $this->prefetchCount;
$this->fetchCountLast = $this->fetchCount;
}
}
- function readDump() {
- $state = '';
- $lastName = '';
- $this->thisPage = 0;
- $this->thisRev = 0;
+ function setTimeExceeded() {
+ $this->timeExceeded = True;
+ }
- $reader = new XMLReader();
- $reader->open( $this->input );
- $writer = new XMLWriter();
- $writer->openMemory();
+ function checkIfTimeExceeded() {
+ if ( $this->maxTimeAllowed && ( $this->lastTime - $this->timeOfCheckpoint > $this->maxTimeAllowed ) ) {
+ return true;
+ }
+ return false;
+ }
+ function finalOptionCheck() {
+ if ( ( $this->checkpointFiles && ! $this->maxTimeAllowed ) ||
+ ( $this->maxTimeAllowed && !$this->checkpointFiles ) ) {
+ throw new MWException("Options checkpointfile and maxtime must be specified together.\n");
+ }
+ foreach ($this->checkpointFiles as $checkpointFile) {
+ $count = substr_count ( $checkpointFile,"%s" );
+ if ( $count != 2 ) {
+ throw new MWException("Option checkpointfile must contain two '%s' for substitution of first and last pageids, count is $count instead, file is $checkpointFile.\n");
+ }
+ }
- while ( $reader->read() ) {
- $tag = $reader->name;
- $type = $reader->nodeType;
+ if ( $this->checkpointFiles ) {
+ $filenameList = (array)$this->egress->getFilenames();
+ if ( count( $filenameList ) != count( $this->checkpointFiles ) ) {
+ throw new MWException("One checkpointfile must be specified for each output option, if maxtime is used.\n");
+ }
+ }
+ }
- if ( $type == XmlReader::END_ELEMENT ) {
- $writer->endElement();
+ function readDump( $input ) {
+ $this->buffer = "";
+ $this->openElement = false;
+ $this->atStart = true;
+ $this->state = "";
+ $this->lastName = "";
+ $this->thisPage = 0;
+ $this->thisRev = 0;
- if ( $tag == 'revision' ) {
- $this->revCount();
- $this->thisRev = '';
- } elseif ( $tag == 'page' ) {
- $this->reportPage();
- $this->thisPage = '';
- }
- } elseif ( $type == XmlReader::ELEMENT ) {
- $attribs = array();
- if ( $reader->hasAttributes ) {
- for ( $i = 0; $reader->moveToAttributeNo( $i ); $i++ ) {
- $attribs[$reader->name] = $reader->value;
- }
- }
+ $parser = xml_parser_create( "UTF-8" );
+ xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
- if ( $reader->isEmptyElement && $tag == 'text' && isset( $attribs['id'] ) ) {
- $writer->startElement( 'text' );
- $writer->writeAttribute( 'xml:space', 'preserve' );
- $text = $this->getText( $attribs['id'] );
- if ( strlen( $text ) ) {
- $writer->text( $text );
- }
- $writer->endElement();
- } else {
- $writer->startElement( $tag );
- foreach( $attribs as $name => $val ) {
- $writer->writeAttribute( $name, $val );
- }
- if ( $reader->isEmptyElement ) {
- $writer->endElement();
- }
- }
+ xml_set_element_handler( $parser, array( &$this, 'startElement' ), array( &$this, 'endElement' ) );
+ xml_set_character_data_handler( $parser, array( &$this, 'characterData' ) );
- $lastName = $tag;
- if ( $tag == 'revision' ) {
- $state = 'revision';
- } elseif ( $tag == 'page' ) {
- $state = 'page';
+ $offset = 0; // for context extraction on error reporting
+ $bufferSize = 512 * 1024;
+ do {
+ if ($this->checkIfTimeExceeded()) {
+ $this->setTimeExceeded();
+ }
+ $chunk = fread( $input, $bufferSize );
+ if ( !xml_parse( $parser, $chunk, feof( $input ) ) ) {
+ wfDebug( "TextDumpPass::readDump encountered XML parsing error\n" );
+ return new WikiXmlError( $parser, 'XML import parse failure', $chunk, $offset );
+ }
+ $offset += strlen( $chunk );
+ } while ( $chunk !== false && !feof( $input ) );
+ if ($this->maxTimeAllowed) {
+ $filenameList = (array)$this->egress->getFilenames();
+ // we wrote some stuff after last checkpoint that needs renamed
+ if (file_exists($filenameList[0])) {
+ $newFilenames = array();
+ # we might have just written the header and footer and had no
+ # pages or revisions written... perhaps they were all deleted
+ # there's no pageID 0 so we use that. the caller is responsible
+ # for deciding what to do with a file containing only the
+ # siteinfo information and the mw tags.
+ if (! $this->firstPageWritten) {
+ $firstPageID = str_pad(0,9,"0",STR_PAD_LEFT);
+ $lastPageID = str_pad(0,9,"0",STR_PAD_LEFT);
}
- } elseif ( $type == XMLReader::SIGNIFICANT_WHITESPACE || $type = XMLReader::TEXT ) {
- if ( $lastName == 'id' ) {
- if ( $state == 'revision' ) {
- $this->thisRev .= $reader->value;
- } elseif ( $state == 'page' ) {
- $this->thisPage .= $reader->value;
- }
+ else {
+ $firstPageID = str_pad($this->firstPageWritten,9,"0",STR_PAD_LEFT);
+ $lastPageID = str_pad($this->lastPageWritten,9,"0",STR_PAD_LEFT);
}
- $writer->text( $reader->value );
+ for ( $i = 0; $i < count( $filenameList ); $i++ ) {
+ $checkpointNameFilledIn = sprintf( $this->checkpointFiles[$i], $firstPageID, $lastPageID );
+ $fileinfo = pathinfo($filenameList[$i]);
+ $newFilenames[] = $fileinfo['dirname'] . '/' . $checkpointNameFilledIn;
+ }
+ $this->egress->closeAndRename( $newFilenames );
}
- $this->sink->write( $writer->outputMemory() );
}
+ xml_parser_free( $parser );
+
+ return true;
}
function getText( $id ) {
$this->closeSpawn();
$this->openSpawn();
}
- $text = $this->getTextSpawned( $id );
+ $text = $this->getTextSpawned( $id );
} else {
- $text = $this->getTextDbSafe( $id );
+ $text = $this->getTextDbSafe( $id );
}
if ( $text === false ) {
$this->failures++;
$this->failedTextRetrievals++;
if ($this->failedTextRetrievals > $this->maxConsecutiveFailedTextRetrievals) {
throw $ex;
- }
- else {
+ } else {
// would be nice to return something better to the caller someday,
// log what we know about the failure and about the revision
- return("");
+ return "";
}
} else {
$this->progress( "Error $this->failures " .
}
} else {
$this->failedTextRetrievals= 0;
- return( $text );
+ return $text;
}
}
-
+ return '';
}
/**
* Fetch a text revision from the database, retrying in case of failure.
* This may survive some transitory errors by reconnecting, but
* may not survive a long-term server outage.
+ *
+ * FIXME: WTF? Why is it using a loop and then returning unconditionally?
*/
private function getTextDbSafe( $id ) {
while ( true ) {
/**
* May throw a database error if, say, the server dies during query.
+ * @param $id
+ * @return bool|string
*/
private function getTextDb( $id ) {
global $wgContLang;
function openSpawn() {
global $IP;
- $cmd = implode( " ",
- array_map( 'wfEscapeShellArg',
- array(
- $this->php,
- "$IP/maintenance/fetchText.php",
- '--wiki', wfWikiID() ) ) );
+ if ( file_exists( "$IP/../multiversion/MWScript.php" ) ) {
+ $cmd = implode( " ",
+ array_map( 'wfEscapeShellArg',
+ array(
+ $this->php,
+ "$IP/../multiversion/MWScript.php",
+ "fetchText.php",
+ '--wiki', wfWikiID() ) ) );
+ }
+ else {
+ $cmd = implode( " ",
+ array_map( 'wfEscapeShellArg',
+ array(
+ $this->php,
+ "$IP/maintenance/fetchText.php",
+ '--wiki', wfWikiID() ) ) );
+ }
$spec = array(
0 => array( "pipe", "r" ),
1 => array( "pipe", "w" ),
$normalized = $wgContLang->normalize( $stripped );
return $normalized;
}
+
+ function startElement( $parser, $name, $attribs ) {
+ $this->checkpointJustWritten = false;
+
+ $this->clearOpenElement( null );
+ $this->lastName = $name;
+
+ if ( $name == 'revision' ) {
+ $this->state = $name;
+ $this->egress->writeOpenPage( null, $this->buffer );
+ $this->buffer = "";
+ } elseif ( $name == 'page' ) {
+ $this->state = $name;
+ if ( $this->atStart ) {
+ $this->egress->writeOpenStream( $this->buffer );
+ $this->buffer = "";
+ $this->atStart = false;
+ }
+ }
+
+ if ( $name == "text" && isset( $attribs['id'] ) ) {
+ $text = $this->getText( $attribs['id'] );
+ $this->openElement = array( $name, array( 'xml:space' => 'preserve' ) );
+ if ( strlen( $text ) > 0 ) {
+ $this->characterData( $parser, $text );
+ }
+ } else {
+ $this->openElement = array( $name, $attribs );
+ }
+ }
+
+ function endElement( $parser, $name ) {
+ $this->checkpointJustWritten = false;
+
+ if ( $this->openElement ) {
+ $this->clearOpenElement( "" );
+ } else {
+ $this->buffer .= "</$name>";
+ }
+
+ if ( $name == 'revision' ) {
+ $this->egress->writeRevision( null, $this->buffer );
+ $this->buffer = "";
+ $this->thisRev = "";
+ } elseif ( $name == 'page' ) {
+ if (! $this->firstPageWritten) {
+ $this->firstPageWritten = trim($this->thisPage);
+ }
+ $this->lastPageWritten = trim($this->thisPage);
+ if ($this->timeExceeded) {
+ $this->egress->writeClosePage( $this->buffer );
+ // nasty hack, we can't just write the chardata after the
+ // page tag, it will include leading blanks from the next line
+ $this->egress->sink->write("\n");
+
+ $this->buffer = $this->xmlwriterobj->closeStream();
+ $this->egress->writeCloseStream( $this->buffer );
+
+ $this->buffer = "";
+ $this->thisPage = "";
+ // this could be more than one file if we had more than one output arg
+
+ $filenameList = (array)$this->egress->getFilenames();
+ $newFilenames = array();
+ $firstPageID = str_pad($this->firstPageWritten,9,"0",STR_PAD_LEFT);
+ $lastPageID = str_pad($this->lastPageWritten,9,"0",STR_PAD_LEFT);
+ for ( $i = 0; $i < count( $filenameList ); $i++ ) {
+ $checkpointNameFilledIn = sprintf( $this->checkpointFiles[$i], $firstPageID, $lastPageID );
+ $fileinfo = pathinfo($filenameList[$i]);
+ $newFilenames[] = $fileinfo['dirname'] . '/' . $checkpointNameFilledIn;
+ }
+ $this->egress->closeRenameAndReopen( $newFilenames );
+ $this->buffer = $this->xmlwriterobj->openStream();
+ $this->timeExceeded = false;
+ $this->timeOfCheckpoint = $this->lastTime;
+ $this->firstPageWritten = false;
+ $this->checkpointJustWritten = true;
+ }
+ else {
+ $this->egress->writeClosePage( $this->buffer );
+ $this->buffer = "";
+ $this->thisPage = "";
+ }
+
+ } elseif ( $name == 'mediawiki' ) {
+ $this->egress->writeCloseStream( $this->buffer );
+ $this->buffer = "";
+ }
+ }
+
+ function characterData( $parser, $data ) {
+ $this->clearOpenElement( null );
+ if ( $this->lastName == "id" ) {
+ if ( $this->state == "revision" ) {
+ $this->thisRev .= $data;
+ } elseif ( $this->state == "page" ) {
+ $this->thisPage .= $data;
+ }
+ }
+ // have to skip the newline left over from closepagetag line of
+ // end of checkpoint files. nasty hack!!
+ if ($this->checkpointJustWritten) {
+ if ($data[0] == "\n") {
+ $data = substr($data,1);
+ }
+ $this->checkpointJustWritten = false;
+ }
+ $this->buffer .= htmlspecialchars( $data );
+ }
+
+ function clearOpenElement( $style ) {
+ if ( $this->openElement ) {
+ $this->buffer .= Xml::element( $this->openElement[0], $this->openElement[1], $style );
+ $this->openElement = false;
+ }
+ }
}
$dumper = new TextPassDumper( $argv );
if ( !isset( $options['help'] ) ) {
- $dumper->dump( WikiExporter::FULL );
+ $dumper->dump( true );
} else {
$dumper->progress( <<<ENDS
This script postprocesses XML dumps from dumpBackup.php to add
--stub=<type>:<file> To load a compressed stub dump instead of stdin
--prefetch=<type>:<file> Use a prior dump file as a text source, to save
pressure on the database.
+ (Requires the XMLReader extension)
+ --maxtime=<minutes> Write out checkpoint file after this many minutes (writing
+ out complete page, closing xml file properly, and opening new one
+ with header). This option requires the checkpointfile option.
+ --checkpointfile=<filenamepattern> Use this string for checkpoint filenames,
+ substituting first pageid written for the first %s (required) and the
+ last pageid written for the second %s if it exists.
--quiet Don't dump status reports to stderr.
--report=n Report position and speed after every n pages processed.
(Default: 100)
--server=h Force reading from MySQL server h
- --output=<type>:<file> Write to a file instead of stdout
- <type>s: file, gzip, bzip2, 7zip
--current Base ETA on number of pages in database instead of all revisions
--spawn Spawn a subprocess for loading text records
--help Display this help message
dépôts / lhc / web / wiklou.git / blobdiff