9bdc558bc4
Useful if you're doing queries over many wikis (wmf usage) that might induce some repllag Change-Id: I9818f1763d3330d0b96d9bb9c192a957293b6a5b
135 lines
3.8 KiB
PHP
135 lines
3.8 KiB
PHP
<?php
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/**
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* Send SQL queries from the specified file to the database, performing
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* variable replacement along the way.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Maintenance
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*/
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require_once( __DIR__ . '/Maintenance.php' );
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/**
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* Maintenance script that sends SQL queries from the specified file to the database.
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*
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* @ingroup Maintenance
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*/
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class MwSql extends Maintenance {
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public function __construct() {
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parent::__construct();
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$this->mDescription = "Send SQL queries to a MediaWiki database";
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$this->addOption( 'cluster', 'Use an external cluster by name', false, true );
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}
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public function execute() {
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// Get a DB handle (with this wiki's DB select) from the appropriate load balancer
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if ( $this->hasOption( 'cluster' ) ) {
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$lb = wfGetLBFactory()->getExternalLB( $this->getOption( 'cluster' ) );
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$dbw = $lb->getConnection( DB_MASTER ); // master for external LB
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} else {
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$dbw = wfGetDB( DB_MASTER ); // master for primary LB for this wiki
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}
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if ( $this->hasArg( 0 ) ) {
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$file = fopen( $this->getArg( 0 ), 'r' );
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if ( !$file ) {
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$this->error( "Unable to open input file", true );
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}
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$error = $dbw->sourceStream( $file, false, array( $this, 'sqlPrintResult' ) );
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if ( $error !== true ) {
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$this->error( $error, true );
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} else {
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exit( 0 );
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}
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}
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$useReadline = function_exists( 'readline_add_history' )
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&& Maintenance::posix_isatty( 0 /*STDIN*/ );
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if ( $useReadline ) {
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global $IP;
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$historyFile = isset( $_ENV['HOME'] ) ?
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"{$_ENV['HOME']}/.mwsql_history" : "$IP/maintenance/.mwsql_history";
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readline_read_history( $historyFile );
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}
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$wholeLine = '';
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$newPrompt = '> ';
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$prompt = $newPrompt;
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while ( ( $line = Maintenance::readconsole( $prompt ) ) !== false ) {
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if( !$line ) {
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# User simply pressed return key
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continue;
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}
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$done = $dbw->streamStatementEnd( $wholeLine, $line );
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$wholeLine .= $line;
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if ( !$done ) {
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$wholeLine .= ' ';
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$prompt = ' -> ';
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continue;
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}
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if ( $useReadline ) {
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# Delimiter is eated by streamStatementEnd, we add it
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# up in the history (bug 37020)
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readline_add_history( $wholeLine . $dbw->getDelimiter() );
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readline_write_history( $historyFile );
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}
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try{
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$res = $dbw->query( $wholeLine );
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$this->sqlPrintResult( $res, $dbw );
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$prompt = $newPrompt;
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$wholeLine = '';
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} catch (DBQueryError $e) {
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$doDie = ! Maintenance::posix_isatty( 0 );
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$this->error( $e, $doDie );
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}
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}
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wfWaitForSlaves();
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}
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/**
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* Print the results, callback for $db->sourceStream()
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* @param $res ResultWrapper The results object
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* @param $db DatabaseBase object
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*/
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public function sqlPrintResult( $res, $db ) {
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if ( !$res ) {
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// Do nothing
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return;
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} elseif ( is_object( $res ) && $res->numRows() ) {
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foreach ( $res as $row ) {
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$this->output( print_r( $row, true ) );
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}
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} else {
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$affected = $db->affectedRows();
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$this->output( "Query OK, $affected row(s) affected\n" );
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}
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}
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/**
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* @return int DB_TYPE constant
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*/
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public function getDbType() {
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return Maintenance::DB_ADMIN;
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}
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}
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$maintClass = "MwSql";
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require_once( RUN_MAINTENANCE_IF_MAIN );
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