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<?php
/**
* Send SQL queries from the specified file to the database, performing
* variable replacement along the way.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Maintenance
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script that sends SQL queries from the specified file to the database.
*
* @ingroup Maintenance
*/
class MwSql extends Maintenance {
public function __construct() {
parent::__construct();
$this->mDescription = "Send SQL queries to a MediaWiki database";
$this->addOption( 'cluster', 'Use an external cluster by name', false, true );
$this->addOption( 'wikidb', 'The database wiki ID to use if not the current one', false, true );
$this->addOption( 'slave', 'Use a slave server (either "any" or by name)', false, true );
}
public function execute() {
$wiki = $this->getOption( 'wikidb' ) ?: false;
// Get the appropriate load balancer (for this wiki)
if ( $this->hasOption( 'cluster' ) ) {
$lb = wfGetLBFactory()->getExternalLB( $this->getOption( 'cluster' ), $wiki );
} else {
$lb = wfGetLB( $wiki );
}
// Figure out which server to use
if ( $this->hasOption( 'slave' ) ) {
$server = $this->getOption( 'slave' );
if ( $server === 'any' ) {
$index = DB_SLAVE;
} else {
$index = null;
$serverCount = $lb->getServerCount();
for ( $i = 0; $i < $serverCount; ++$i ) {
if ( $lb->getServerName( $i ) === $server ) {
$index = $i;
break;
}
}
if ( $index === null ) {
$this->error( "No slave server configured with the name '$server'.", 1 );
}
}
} else {
$index = DB_MASTER;
}
// Get a DB handle (with this wiki's DB selected) from the appropriate load balancer
$db = $lb->getConnection( $index, array(), $wiki );
if ( $this->hasOption( 'slave' ) && $db->getLBInfo( 'master' ) !== null ) {
$this->error( "The server selected ({$db->getServer()}) is not a slave.", 1 );
}
if ( $this->hasArg( 0 ) ) {
$file = fopen( $this->getArg( 0 ), 'r' );
if ( !$file ) {
$this->error( "Unable to open input file", true );
}
$error = $db->sourceStream( $file, false, array( $this, 'sqlPrintResult' ) );
if ( $error !== true ) {
$this->error( $error, true );
} else {
exit( 0 );
}
}
$useReadline = function_exists( 'readline_add_history' )
&& Maintenance::posix_isatty( 0 /*STDIN*/ );
if ( $useReadline ) {
global $IP;
$historyFile = isset( $_ENV['HOME'] ) ?
"{$_ENV['HOME']}/.mwsql_history" : "$IP/maintenance/.mwsql_history";
readline_read_history( $historyFile );
}
$wholeLine = '';
$newPrompt = '> ';
$prompt = $newPrompt;
while ( ( $line = Maintenance::readconsole( $prompt ) ) !== false ) {
if ( !$line ) {
# User simply pressed return key
continue;
}
$done = $db->streamStatementEnd( $wholeLine, $line );
$wholeLine .= $line;
if ( !$done ) {
$wholeLine .= ' ';
$prompt = ' -> ';
continue;
}
if ( $useReadline ) {
# Delimiter is eated by streamStatementEnd, we add it
# up in the history (bug 37020)
readline_add_history( $wholeLine . $db->getDelimiter() );
readline_write_history( $historyFile );
}
try {
$res = $db->query( $wholeLine );
$this->sqlPrintResult( $res, $db );
$prompt = $newPrompt;
$wholeLine = '';
} catch ( DBQueryError $e ) {
$doDie = !Maintenance::posix_isatty( 0 );
$this->error( $e, $doDie );
}
}
wfWaitForSlaves();
}
/**
* Print the results, callback for $db->sourceStream()
* @param ResultWrapper $res The results object
* @param DatabaseBase $db
*/
public function sqlPrintResult( $res, $db ) {
if ( !$res ) {
// Do nothing
return;
} elseif ( is_object( $res ) && $res->numRows() ) {
foreach ( $res as $row ) {
$this->output( print_r( $row, true ) );
}
} else {
$affected = $db->affectedRows();
$this->output( "Query OK, $affected row(s) affected\n" );
}
}
/**
* @return int DB_TYPE constant
*/
public function getDbType() {
return Maintenance::DB_ADMIN;
}
}
$maintClass = "MwSql";
require_once RUN_MAINTENANCE_IF_MAIN;
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