* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
+ * @file
* @ingroup Maintenance
*/
-require_once( dirname(__FILE__) . '/Maintenance.php' );
+require_once( dirname( __FILE__ ) . '/Maintenance.php' );
class ConvertLinks extends Maintenance {
+ private $logPerformance;
public function __construct() {
parent::__construct();
$this->mDescription = "Convert from the old links schema (string->ID) to the new schema (ID->ID)
The wiki should be put into read-only mode while this script executes";
+
+ $this->addArg( 'logperformance', "Log performance to perfLogFilename.", false );
+ $this->addArg( 'perfLogFilename', "Filename where performance is logged if --logperformance was set (defaults to 'convLinksPerf.txt').", false );
+ $this->addArg( 'keep-links-table', "Don't overwrite the old links table with the new one, leave the new table at links_temp.", false );
+ $this->addArg( 'nokeys', "Don't create keys, and so allow duplicates in the new links table.\n
+This gives a huge speed improvement for very large links tables which are MyISAM." /* (What about InnoDB?) */, false );
+ }
+
+ public function getDbType() {
+ return Maintenance::DB_ADMIN;
}
public function execute() {
- global $wgDBtype;
- if( $wgDBtype == 'postgres' ) {
- $this->output( "Links table already ok on Postgres.\n" );
+ $dbw = wfGetDB( DB_MASTER );
+
+ $type = $dbw->getType();
+ if ( $type != 'mysql' ) {
+ $this->output( "Link table conversion not necessary for $type\n" );
return;
}
- $this->output( "Converting links table to ID-ID...\n" );
+ global $wgContLang;
- global $wgLang, $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname;
- global $noKeys, $logPerformance, $fh;
-
- $tuplesAdded = $numBadLinks = $curRowsRead = 0; #counters etc
+ $numBadLinks = $curRowsRead = 0; # counters etc
$totalTuplesInserted = 0; # total tuples INSERTed into links_temp
-
- $reportCurReadProgress = true; #whether or not to give progress reports while reading IDs from cur table
- $curReadReportInterval = 1000; #number of rows between progress reports
-
- $reportLinksConvProgress = true; #whether or not to give progress reports during conversion
- $linksConvInsertInterval = 1000; #number of rows per INSERT
-
+
+ $reportCurReadProgress = true; # whether or not to give progress reports while reading IDs from cur table
+ $curReadReportInterval = 1000; # number of rows between progress reports
+
+ $reportLinksConvProgress = true; # whether or not to give progress reports during conversion
+ $linksConvInsertInterval = 1000; # number of rows per INSERT
+
$initialRowOffset = 0;
- #$finalRowOffset = 0; # not used yet; highest row number from links table to process
-
- # Overwrite the old links table with the new one. If this is set to false,
- # the new table will be left at links_temp.
- $overwriteLinksTable = true;
-
- # Don't create keys, and so allow duplicates in the new links table.
- # This gives a huge speed improvement for very large links tables which are MyISAM. (What about InnoDB?)
- $noKeys = false;
-
-
- $logPerformance = false; # output performance data to a file
- $perfLogFilename = "convLinksPerf.txt";
- #--------------------------------------------------------------------
-
- $dbw = wfGetDB( DB_MASTER );
- list ($cur, $links, $links_temp, $links_backup) = $dbw->tableNamesN( 'cur', 'links', 'links_temp', 'links_backup' );
-
+ # $finalRowOffset = 0; # not used yet; highest row number from links table to process
+
+ $overwriteLinksTable = !$this->hasOption( 'keep-links-table' );
+ $noKeys = $this->hasOption( 'noKeys' );
+ $this->logPerformance = $this->hasOption( 'logperformance' );
+ $perfLogFilename = $this->getArg( 'perfLogFilename', "convLinksPerf.txt" );
+
+ # --------------------------------------------------------------------
+
+ list ( $cur, $links, $links_temp, $links_backup ) = $dbw->tableNamesN( 'cur', 'links', 'links_temp', 'links_backup' );
+
+ if( $dbw->tableExists( 'pagelinks' ) ) {
+ $this->output( "...have pagelinks; skipping old links table updates\n" );
+ return;
+ }
+
$res = $dbw->query( "SELECT l_from FROM $links LIMIT 1" );
if ( $dbw->fieldType( $res, 0 ) == "int" ) {
$this->output( "Schema already converted\n" );
return;
}
-
+
$res = $dbw->query( "SELECT COUNT(*) AS count FROM $links" );
- $row = $dbw->fetchObject($res);
+ $row = $dbw->fetchObject( $res );
$numRows = $row->count;
$dbw->freeResult( $res );
-
+
if ( $numRows == 0 ) {
$this->output( "Updating schema (no rows to convert)...\n" );
$this->createTempTable();
} else {
- if ( $logPerformance ) { $fh = fopen ( $perfLogFilename, "w" ); }
+ $fh = false;
+ if ( $this->logPerformance ) {
+ $fh = fopen ( $perfLogFilename, "w" );
+ if ( !$fh ) {
+ $this->error( "Couldn't open $perfLogFilename" );
+ $this->logPerformance = false;
+ }
+ }
$baseTime = $startTime = $this->getMicroTime();
# Create a title -> cur_id map
$this->output( "Loading IDs from $cur table...\n" );
- $this->performanceLog ( "Reading $numRows rows from cur table...\n" );
- $this->performanceLog ( "rows read vs seconds elapsed:\n" );
+ $this->performanceLog ( $fh, "Reading $numRows rows from cur table...\n" );
+ $this->performanceLog ( $fh, "rows read vs seconds elapsed:\n" );
$dbw->bufferResults( false );
$res = $dbw->query( "SELECT cur_namespace,cur_title,cur_id FROM $cur" );
$ids = array();
- while ( $row = $dbw->fetchObject( $res ) ) {
+ foreach ( $res as $row ) {
$title = $row->cur_title;
if ( $row->cur_namespace ) {
- $title = $wgLang->getNsText( $row->cur_namespace ) . ":$title";
+ $title = $wgContLang->getNsText( $row->cur_namespace ) . ":$title";
}
$ids[$title] = $row->cur_id;
$curRowsRead++;
- if ($reportCurReadProgress) {
- if (($curRowsRead % $curReadReportInterval) == 0) {
- $this->performanceLog( $curRowsRead . " " . ($this->getMicroTime() - $baseTime) . "\n" );
+ if ( $reportCurReadProgress ) {
+ if ( ( $curRowsRead % $curReadReportInterval ) == 0 ) {
+ $this->performanceLog( $fh, $curRowsRead . " " . ( $this->getMicroTime() - $baseTime ) . "\n" );
$this->output( "\t$curRowsRead rows of $cur table read.\n" );
}
}
$dbw->freeResult( $res );
$dbw->bufferResults( true );
$this->output( "Finished loading IDs.\n\n" );
- $this->performanceLog( "Took " . ($this->getMicroTime() - $baseTime) . " seconds to load IDs.\n\n" );
- #--------------------------------------------------------------------
-
+ $this->performanceLog( $fh, "Took " . ( $this->getMicroTime() - $baseTime ) . " seconds to load IDs.\n\n" );
+
+ # --------------------------------------------------------------------
+
# Now, step through the links table (in chunks of $linksConvInsertInterval rows),
# convert, and write to the new table.
$this->createTempTable();
- $this->performanceLog( "Resetting timer.\n\n" );
+ $this->performanceLog( $fh, "Resetting timer.\n\n" );
$baseTime = $this->getMicroTime();
$this->output( "Processing $numRows rows from $links table...\n" );
- $this->performanceLog( "Processing $numRows rows from $links table...\n" );
- $this->performanceLog( "rows inserted vs seconds elapsed:\n" );
-
- for ($rowOffset = $initialRowOffset; $rowOffset < $numRows; $rowOffset += $linksConvInsertInterval) {
+ $this->performanceLog( $fh, "Processing $numRows rows from $links table...\n" );
+ $this->performanceLog( $fh, "rows inserted vs seconds elapsed:\n" );
+
+ for ( $rowOffset = $initialRowOffset; $rowOffset < $numRows; $rowOffset += $linksConvInsertInterval ) {
$sqlRead = "SELECT * FROM $links ";
- $sqlRead = $dbw->limitResult($sqlRead, $linksConvInsertInterval,$rowOffset);
- $res = $dbw->query($sqlRead);
+ $sqlRead = $dbw->limitResult( $sqlRead, $linksConvInsertInterval, $rowOffset );
+ $res = $dbw->query( $sqlRead );
if ( $noKeys ) {
- $sqlWrite = array("INSERT INTO $links_temp (l_from,l_to) VALUES ");
+ $sqlWrite = array( "INSERT INTO $links_temp (l_from,l_to) VALUES " );
} else {
- $sqlWrite = array("INSERT IGNORE INTO $links_temp (l_from,l_to) VALUES ");
+ $sqlWrite = array( "INSERT IGNORE INTO $links_temp (l_from,l_to) VALUES " );
}
-
+
$tuplesAdded = 0; # no tuples added to INSERT yet
- while ( $row = $dbw->fetchObject($res) ) {
+ foreach ( $res as $row ) {
$fromTitle = $row->l_from;
if ( array_key_exists( $fromTitle, $ids ) ) { # valid title
$from = $ids[$fromTitle];
$numBadLinks++;
}
}
- $dbw->freeResult($res);
- #$this->output( "rowOffset: $rowOffset\ttuplesAdded: $tuplesAdded\tnumBadLinks: $numBadLinks\n" );
+ $dbw->freeResult( $res );
+ # $this->output( "rowOffset: $rowOffset\ttuplesAdded: $tuplesAdded\tnumBadLinks: $numBadLinks\n" );
if ( $tuplesAdded != 0 ) {
- if ($reportLinksConvProgress) {
+ if ( $reportLinksConvProgress ) {
$this->output( "Inserting $tuplesAdded tuples into $links_temp..." );
}
- $dbw->query( implode("",$sqlWrite) );
+ $dbw->query( implode( "", $sqlWrite ) );
$totalTuplesInserted += $tuplesAdded;
- if ($reportLinksConvProgress)
+ if ( $reportLinksConvProgress )
$this->output( " done. Total $totalTuplesInserted tuples inserted.\n" );
- $this->performanceLog( $totalTuplesInserted . " " . ($this->getMicroTime() - $baseTime) . "\n" );
+ $this->performanceLog( $fh, $totalTuplesInserted . " " . ( $this->getMicroTime() - $baseTime ) . "\n" );
}
}
$this->output( "$totalTuplesInserted valid titles and $numBadLinks invalid titles were processed.\n\n" );
- $this->performanceLog( "$totalTuplesInserted valid titles and $numBadLinks invalid titles were processed.\n" );
- $this->performanceLog( "Total execution time: " . ($this->getMicroTime() - $startTime) . " seconds.\n" );
- if ( $logPerformance ) { fclose ( $fh ); }
+ $this->performanceLog( $fh, "$totalTuplesInserted valid titles and $numBadLinks invalid titles were processed.\n" );
+ $this->performanceLog( $fh, "Total execution time: " . ( $this->getMicroTime() - $startTime ) . " seconds.\n" );
+ if ( $this->logPerformance ) {
+ fclose ( $fh );
+ }
}
- #--------------------------------------------------------------------
-
+ # --------------------------------------------------------------------
+
if ( $overwriteLinksTable ) {
- $dbConn = Database::newFromParams( $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname );
- if (!($dbConn->isOpen())) {
- $this->output( "Opening connection to database failed.\n" );
- return;
- }
# Check for existing links_backup, and delete it if it exists.
$this->output( "Dropping backup links table if it exists..." );
- $dbConn->query( "DROP TABLE IF EXISTS $links_backup", DB_MASTER);
+ $dbw->query( "DROP TABLE IF EXISTS $links_backup", DB_MASTER );
$this->output( " done.\n" );
-
+
# Swap in the new table, and move old links table to links_backup
$this->output( "Swapping tables '$links' to '$links_backup'; '$links_temp' to '$links'..." );
- $dbConn->query( "RENAME TABLE links TO $links_backup, $links_temp TO $links", DB_MASTER );
+ $dbw->query( "RENAME TABLE links TO $links_backup, $links_temp TO $links", DB_MASTER );
$this->output( " done.\n\n" );
-
- $dbConn->close();
+
+ $dbw->close();
$this->output( "Conversion complete. The old table remains at $links_backup;\n" );
$this->output( "delete at your leisure.\n" );
} else {
}
private function createTempTable() {
- global $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname;
- global $noKeys;
- $dbConn = Database::newFromParams( $wgDBserver, $wgDBadminuser, $wgDBadminpassword, $wgDBname );
+ $dbConn = wfGetDB( DB_MASTER );
- if (!($dbConn->isOpen())) {
+ if ( !( $dbConn->isOpen() ) ) {
$this->output( "Opening connection to database failed.\n" );
return;
}
$links_temp = $dbConn->tableName( 'links_temp' );
$this->output( "Dropping temporary links table if it exists..." );
- $dbConn->query( "DROP TABLE IF EXISTS $links_temp");
+ $dbConn->query( "DROP TABLE IF EXISTS $links_temp" );
$this->output( " done.\n" );
$this->output( "Creating temporary links table..." );
- if ( $noKeys ) {
+ if ( $this->hasOption( 'noKeys' ) ) {
$dbConn->query( "CREATE TABLE $links_temp ( " .
"l_from int(8) unsigned NOT NULL default '0', " .
- "l_to int(8) unsigned NOT NULL default '0')");
+ "l_to int(8) unsigned NOT NULL default '0')" );
} else {
$dbConn->query( "CREATE TABLE $links_temp ( " .
"l_from int(8) unsigned NOT NULL default '0', " .
"l_to int(8) unsigned NOT NULL default '0', " .
"UNIQUE KEY l_from(l_from,l_to), " .
- "KEY (l_to))");
+ "KEY (l_to))" );
}
$this->output( " done.\n\n" );
}
- private function performanceLog( $text ) {
- global $logPerformance, $fh;
- if ( $logPerformance ) {
+ private function performanceLog( $fh, $text ) {
+ if ( $this->logPerformance ) {
fwrite( $fh, $text );
}
}
private function getMicroTime() { # return time in seconds, with microsecond accuracy
- list($usec, $sec) = explode(" ", microtime());
- return ((float)$usec + (float)$sec);
+ list( $usec, $sec ) = explode( " ", microtime() );
+ return ( (float)$usec + (float)$sec );
}
}
$maintClass = "ConvertLinks";
-require_once( DO_MAINTENANCE );
+require_once( RUN_MAINTENANCE_IF_MAIN );
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff