$originalDir = getcwd();
-require_once( dirname( __FILE__ ) . '/commandLine.inc' );
-require_once( 'backup.inc' );
-
-/**
- * @ingroup Maintenance
- */
-class TextPassDumper extends BackupDumper {
- var $prefetch = null;
- var $input = "php://stdin";
- var $history = WikiExporter::FULL;
- var $fetchCount = 0;
- var $prefetchCount = 0;
- var $prefetchCountLast = 0;
- var $fetchCountLast = 0;
-
- var $maxFailures = 5;
- var $maxConsecutiveFailedTextRetrievals = 200;
- var $failureTimeout = 5; // Seconds to sleep after db failure
-
- var $php = "php";
- var $spawn = false;
- var $spawnProc = false;
- var $spawnWrite = false;
- var $spawnRead = false;
- var $spawnErr = false;
-
- 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;
-
-
- /**
- * Drop the database connection $this->db and try to get a new one.
- *
- * This function tries to get a /different/ connection if this is
- * possible. Hence, (if this is possible) it switches to a different
- * failover upon each call.
- *
- * This function resets $this->lb and closes all connections on it.
- *
- * @throws MWException
- */
- function rotateDb() {
- // Cleaning up old connections
- if ( isset( $this->lb ) ) {
- $this->lb->closeAll();
- unset( $this->lb );
- }
-
- if ( isset( $this->db ) && $this->db->isOpen() ) {
- throw new MWException( 'DB is set and has not been closed by the Load Balancer' );
- }
-
- unset( $this->db );
-
- // Trying to set up new connection.
- // We do /not/ retry upon failure, but delegate to encapsulating logic, to avoid
- // individually retrying at different layers of code.
-
- // 1. The LoadBalancer.
- try {
- $this->lb = wfGetLBFactory()->newMainLB();
- } catch (Exception $e) {
- throw new MWException( __METHOD__ . " rotating DB failed to obtain new load balancer (" . $e->getMessage() . ")" );
- }
-
-
- // 2. The Connection, through the load balancer.
- try {
- $this->db = $this->lb->getConnection( DB_SLAVE, 'backup' );
- } catch (Exception $e) {
- throw new MWException( __METHOD__ . " rotating DB failed to obtain new database (" . $e->getMessage() . ")" );
- }
- }
-
-
- function initProgress( $history ) {
- parent::initProgress();
- $this->timeOfCheckpoint = $this->startTime;
- }
-
- function dump( $history, $text = WikiExporter::TEXT ) {
- // 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.
- if ( ini_get( 'display_errors' ) )
- ini_set( 'display_errors', 'stderr' );
-
- $this->initProgress( $this->history );
-
- // We are trying to get an initial database connection to avoid that the
- // first try of this request's first call to getText fails. However, if
- // obtaining a good DB connection fails it's not a serious issue, as
- // getText does retry upon failure and can start without having a working
- // DB connection.
- try {
- $this->rotateDb();
- } catch (Exception $e) {
- // We do not even count this as failure. Just let eventual
- // watchdogs know.
- $this->progress( "Getting initial DB connection failed (" .
- $e->getMessage() . ")" );
- }
-
- $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();
- }
-
- $this->report( true );
- }
-
- function processOption( $opt, $val, $param ) {
- global $IP;
- $url = $this->processFileOpt( $val, $param );
-
- switch( $opt ) {
- case 'prefetch':
- require_once "$IP/maintenance/backupPrefetch.inc";
- $this->prefetch = new BaseDump( $url );
- break;
- 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 ) {
- $this->php = $val;
- }
- break;
- }
- }
-
- function processFileOpt( $val, $param ) {
- $fileURIs = explode(';',$param);
- foreach ( $fileURIs as $URI ) {
- switch( $val ) {
- case "file":
- $newURI = $URI;
- break;
- case "gzip":
- $newURI = "compress.zlib://$URI";
- break;
- case "bzip2":
- $newURI = "compress.bzip2://$URI";
- break;
- case "7zip":
- $newURI = "mediawiki.compress.7z://$URI";
- break;
- default:
- $newURI = $URI;
- }
- $newFileURIs[] = $newURI;
- }
- $val = implode( ';', $newFileURIs );
- return $val;
- }
-
- /**
- * Overridden to include prefetch ratio if enabled.
- */
- function showReport() {
- if ( !$this->prefetch ) {
- 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;
- $this->revCountPart = $this->revCount - $this->revCountLast;
-
- if ( $deltaAll ) {
- $portion = $this->revCount / $this->maxCount;
- $eta = $this->startTime + $deltaAll / $portion;
- $etats = wfTimestamp( TS_DB, intval( $eta ) );
- if ( $this->fetchCount ) {
- $fetchRate = 100.0 * $this->prefetchCount / $this->fetchCount;
- } else {
- $fetchRate = '-';
- }
- $pageRate = $this->pageCount / $deltaAll;
- $revRate = $this->revCount / $deltaAll;
- } else {
- $pageRate = '-';
- $revRate = '-';
- $etats = '-';
- $fetchRate = '-';
- }
- if ( $deltaPart ) {
- if ( $this->fetchCountLast ) {
- $fetchRatePart = 100.0 * $this->prefetchCountLast / $this->fetchCountLast;
- } else {
- $fetchRatePart = '-';
- }
- $pageRatePart = $this->pageCountPart / $deltaPart;
- $revRatePart = $this->revCountPart / $deltaPart;
-
- } else {
- $fetchRatePart = '-';
- $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]",
- $now, wfWikiID(), $this->ID, $this->pageCount, $pageRate, $pageRatePart, $this->revCount, $revRate, $revRatePart, $fetchRate, $fetchRatePart, $etats, $this->maxCount ) );
- $this->lastTime = $nowts;
- $this->revCountLast = $this->revCount;
- $this->prefetchCountLast = $this->prefetchCount;
- $this->fetchCountLast = $this->fetchCount;
- }
- }
-
- function setTimeExceeded() {
- $this->timeExceeded = True;
- }
-
- 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");
- }
- }
-
- 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");
- }
- }
- }
-
- function readDump( $input ) {
- $this->buffer = "";
- $this->openElement = false;
- $this->atStart = true;
- $this->state = "";
- $this->lastName = "";
- $this->thisPage = 0;
- $this->thisRev = 0;
-
- $parser = xml_parser_create( "UTF-8" );
- xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
-
- xml_set_element_handler( $parser, array( &$this, 'startElement' ), array( &$this, 'endElement' ) );
- xml_set_character_data_handler( $parser, array( &$this, 'characterData' ) );
-
- $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);
- }
- else {
- $firstPageID = str_pad($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->closeAndRename( $newFilenames );
- }
- }
- xml_parser_free( $parser );
-
- return true;
- }
-
- /**
- * Tries to get the revision text for a revision id.
- *
- * Upon errors, retries (Up to $this->maxFailures tries each call).
- * If still no good revision get could be found even after this retrying, "" is returned.
- * If no good revision text could be returned for
- * $this->maxConsecutiveFailedTextRetrievals consecutive calls to getText, MWException
- * is thrown.
- *
- * @param $id string The revision id to get the text for
- *
- * @return string The revision text for $id, or ""
- * @throws MWException
- */
- function getText( $id ) {
- $prefetchNotTried = true; // Whether or not we already tried to get the text via prefetch.
- $text = false; // The candidate for a good text. false if no proper value.
- $failures = 0; // The number of times, this invocation of getText already failed.
-
- static $consecutiveFailedTextRetrievals = 0; // The number of times getText failed without
- // yielding a good text in between.
-
- $this->fetchCount++;
-
- // To allow to simply return on success and do not have to worry about book keeping,
- // we assume, this fetch works (possible after some retries). Nevertheless, we koop
- // the old value, so we can restore it, if problems occur (See after the while loop).
- $oldConsecutiveFailedTextRetrievals = $consecutiveFailedTextRetrievals;
- $consecutiveFailedTextRetrievals = 0;
-
- while ( $failures < $this->maxFailures ) {
-
- // As soon as we found a good text for the $id, we will return immediately.
- // Hence, if we make it past the try catch block, we know that we did not
- // find a good text.
-
- try {
- // Step 1: Get some text (or reuse from previous iteratuon if checking
- // for plausibility failed)
-
- // Trying to get prefetch, if it has not been tried before
- if ( $text === false && isset( $this->prefetch ) && $prefetchNotTried ) {
- $prefetchNotTried = false;
- $tryIsPrefetch = true;
- $text = $this->prefetch->prefetch( $this->thisPage, $this->thisRev );
- if ( $text === null ) {
- $text = false;
- }
- }
-
- if ( $text === false ) {
- // Fallback to asking the database
- $tryIsPrefetch = false;
- if ( $this->spawn ) {
- $text = $this->getTextSpawned( $id );
- } else {
- $text = $this->getTextDb( $id );
- }
- }
-
- if ( $text === false ) {
- throw new MWException( "Generic error while obtaining text for id " . $id );
- }
-
- // We received a good candidate for the text of $id via some method
-
- // Step 2: Checking for plausibility and return the text if it is
- // plausible
- $revID = intval( $this->thisRev );
- if ( ! isset( $this->db ) ) {
- throw new MWException( "No database available" );
- }
- $revLength = $this->db->selectField( 'revision', 'rev_len', array( 'rev_id' => $revID ) );
- if( strlen( $text ) == $revLength ) {
- if ( $tryIsPrefetch ) {
- $this->prefetchCount++;
- }
- return $text;
- }
-
- $text = false;
- throw new MWException( "Received text is unplausible for id " . $id );
-
- } catch (Exception $e) {
- $msg = "getting/checking text " . $id . " failed (".$e->getMessage().")";
- if ( $failures + 1 < $this->maxFailures ) {
- $msg .= " (Will retry " . ( $this->maxFailures - $failures - 1) . " more times)";
- }
- $this->progress( $msg );
- }
-
- // Something went wrong; we did not a text that was plausible :(
- $failures++;
-
-
- // After backing off for some time, we try to reboot the whole process as
- // much as possible to not carry over failures from one part to the other
- // parts
- sleep( $this->failureTimeout );
- try {
- $this->rotateDb();
- if ( $this->spawn ) {
- $this->closeSpawn();
- $this->openSpawn();
- }
- } catch (Exception $e) {
- $this->progress( "Rebooting getText infrastructure failed (".$e->getMessage().")" .
- " Trying to continue anyways" );
- }
- }
-
- // Retirieving a good text for $id failed (at least) maxFailures times.
- // We abort for this $id.
-
- // Restoring the consecutive failures, and maybe aborting, if the dump
- // is too broken.
- $consecutiveFailedTextRetrievals = $oldConsecutiveFailedTextRetrievals + 1;
- if ( $consecutiveFailedTextRetrievals > $this->maxConsecutiveFailedTextRetrievals ) {
- throw new MWException( "Graceful storage failure" );
- }
-
- return "";
- }
-
-
- /**
- * May throw a database error if, say, the server dies during query.
- * @param $id
- * @return bool|string
- * @throws MWException
- */
- private function getTextDb( $id ) {
- global $wgContLang;
- if ( ! isset( $this->db ) ) {
- throw new MWException( __METHOD__ . "No database available" );
- }
- $row = $this->db->selectRow( 'text',
- array( 'old_text', 'old_flags' ),
- array( 'old_id' => $id ),
- __METHOD__ );
- $text = Revision::getRevisionText( $row );
- if ( $text === false ) {
- return false;
- }
- $stripped = str_replace( "\r", "", $text );
- $normalized = $wgContLang->normalize( $stripped );
- return $normalized;
- }
-
- private function getTextSpawned( $id ) {
- wfSuppressWarnings();
- if ( !$this->spawnProc ) {
- // First time?
- $this->openSpawn();
- }
- $text = $this->getTextSpawnedOnce( $id );
- wfRestoreWarnings();
- return $text;
- }
-
- function openSpawn() {
- global $IP;
-
- if ( file_exists( "$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" ),
- 2 => array( "file", "/dev/null", "a" ) );
- $pipes = array();
-
- $this->progress( "Spawning database subprocess: $cmd" );
- $this->spawnProc = proc_open( $cmd, $spec, $pipes );
- if ( !$this->spawnProc ) {
- // shit
- $this->progress( "Subprocess spawn failed." );
- return false;
- }
- list(
- $this->spawnWrite, // -> stdin
- $this->spawnRead, // <- stdout
- ) = $pipes;
-
- return true;
- }
-
- private function closeSpawn() {
- wfSuppressWarnings();
- if ( $this->spawnRead )
- fclose( $this->spawnRead );
- $this->spawnRead = false;
- if ( $this->spawnWrite )
- fclose( $this->spawnWrite );
- $this->spawnWrite = false;
- if ( $this->spawnErr )
- fclose( $this->spawnErr );
- $this->spawnErr = false;
- if ( $this->spawnProc )
- pclose( $this->spawnProc );
- $this->spawnProc = false;
- wfRestoreWarnings();
- }
-
- private function getTextSpawnedOnce( $id ) {
- global $wgContLang;
-
- $ok = fwrite( $this->spawnWrite, "$id\n" );
- // $this->progress( ">> $id" );
- if ( !$ok ) return false;
-
- $ok = fflush( $this->spawnWrite );
- // $this->progress( ">> [flush]" );
- if ( !$ok ) return false;
-
- // check that the text id they are sending is the one we asked for
- // this avoids out of sync revision text errors we have encountered in the past
- $newId = fgets( $this->spawnRead );
- if ( $newId === false ) {
- return false;
- }
- if ( $id != intval( $newId ) ) {
- return false;
- }
-
- $len = fgets( $this->spawnRead );
- // $this->progress( "<< " . trim( $len ) );
- if ( $len === false ) return false;
-
- $nbytes = intval( $len );
- // actual error, not zero-length text
- if ($nbytes < 0 ) return false;
-
- $text = "";
-
- // Subprocess may not send everything at once, we have to loop.
- while ( $nbytes > strlen( $text ) ) {
- $buffer = fread( $this->spawnRead, $nbytes - strlen( $text ) );
- if ( $buffer === false ) break;
- $text .= $buffer;
- }
-
- $gotbytes = strlen( $text );
- if ( $gotbytes != $nbytes ) {
- $this->progress( "Expected $nbytes bytes from database subprocess, got $gotbytes " );
- return false;
- }
-
- // Do normalization in the dump thread...
- $stripped = str_replace( "\r", "", $text );
- $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;
- }
- }
-}
+require_once( __DIR__ . '/commandLine.inc' );
+require_once( __DIR__ . '/backupTextPass.inc' );
$dumper = new TextPassDumper( $argv );
dépôts / lhc / web / wiklou.git / blobdiff