'DatabaseLag' => __DIR__ . '/maintenance/lag.php',
'DatabaseLogEntry' => __DIR__ . '/includes/logging/LogEntry.php',
'DatabaseMssql' => __DIR__ . '/includes/db/DatabaseMssql.php',
- 'DatabaseMysql' => __DIR__ . '/includes/db/DatabaseMysql.php',
- 'DatabaseMysqlBase' => __DIR__ . '/includes/db/DatabaseMysqlBase.php',
- 'DatabaseMysqli' => __DIR__ . '/includes/db/DatabaseMysqli.php',
+ 'DatabaseMysql' => __DIR__ . '/includes/libs/rdbms/database/DatabaseMysql.php',
+ 'DatabaseMysqlBase' => __DIR__ . '/includes/libs/rdbms/database/DatabaseMysqlBase.php',
+ 'DatabaseMysqli' => __DIR__ . '/includes/libs/rdbms/database/DatabaseMysqli.php',
'DatabaseOracle' => __DIR__ . '/includes/db/DatabaseOracle.php',
'DatabasePostgres' => __DIR__ . '/includes/db/DatabasePostgres.php',
'DatabaseSqlite' => __DIR__ . '/includes/db/DatabaseSqlite.php',
+++ /dev/null
-<?php
-/**
- * This is the MySQL database abstraction layer.
- *
- * 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 Database
- */
-
-/**
- * Database abstraction object for PHP extension mysql.
- *
- * @ingroup Database
- * @see Database
- */
-class DatabaseMysql extends DatabaseMysqlBase {
- /**
- * @param string $sql
- * @return resource False on error
- */
- protected function doQuery( $sql ) {
- $conn = $this->getBindingHandle();
-
- if ( $this->bufferResults() ) {
- $ret = mysql_query( $sql, $conn );
- } else {
- $ret = mysql_unbuffered_query( $sql, $conn );
- }
-
- return $ret;
- }
-
- /**
- * @param string $realServer
- * @return bool|resource MySQL Database connection or false on failure to connect
- * @throws DBConnectionError
- */
- protected function mysqlConnect( $realServer ) {
- # Avoid a suppressed fatal error, which is very hard to track down
- if ( !extension_loaded( 'mysql' ) ) {
- throw new DBConnectionError(
- $this,
- "MySQL functions missing, have you compiled PHP with the --with-mysql option?\n"
- );
- }
-
- $connFlags = 0;
- if ( $this->mFlags & DBO_SSL ) {
- $connFlags |= MYSQL_CLIENT_SSL;
- }
- if ( $this->mFlags & DBO_COMPRESS ) {
- $connFlags |= MYSQL_CLIENT_COMPRESS;
- }
-
- if ( ini_get( 'mysql.connect_timeout' ) <= 3 ) {
- $numAttempts = 2;
- } else {
- $numAttempts = 1;
- }
-
- $conn = false;
-
- # The kernel's default SYN retransmission period is far too slow for us,
- # so we use a short timeout plus a manual retry. Retrying means that a small
- # but finite rate of SYN packet loss won't cause user-visible errors.
- for ( $i = 0; $i < $numAttempts && !$conn; $i++ ) {
- if ( $i > 1 ) {
- usleep( 1000 );
- }
- if ( $this->mFlags & DBO_PERSISTENT ) {
- $conn = mysql_pconnect( $realServer, $this->mUser, $this->mPassword, $connFlags );
- } else {
- # Create a new connection...
- $conn = mysql_connect( $realServer, $this->mUser, $this->mPassword, true, $connFlags );
- }
- }
-
- return $conn;
- }
-
- /**
- * @param string $charset
- * @return bool
- */
- protected function mysqlSetCharset( $charset ) {
- $conn = $this->getBindingHandle();
-
- if ( function_exists( 'mysql_set_charset' ) ) {
- return mysql_set_charset( $charset, $conn );
- } else {
- return $this->query( 'SET NAMES ' . $charset, __METHOD__ );
- }
- }
-
- /**
- * @return bool
- */
- protected function closeConnection() {
- $conn = $this->getBindingHandle();
-
- return mysql_close( $conn );
- }
-
- /**
- * @return int
- */
- function insertId() {
- $conn = $this->getBindingHandle();
-
- return mysql_insert_id( $conn );
- }
-
- /**
- * @return int
- */
- function lastErrno() {
- if ( $this->mConn ) {
- return mysql_errno( $this->mConn );
- } else {
- return mysql_errno();
- }
- }
-
- /**
- * @return int
- */
- function affectedRows() {
- $conn = $this->getBindingHandle();
-
- return mysql_affected_rows( $conn );
- }
-
- /**
- * @param string $db
- * @return bool
- */
- function selectDB( $db ) {
- $conn = $this->getBindingHandle();
-
- $this->mDBname = $db;
-
- return mysql_select_db( $db, $conn );
- }
-
- protected function mysqlFreeResult( $res ) {
- return mysql_free_result( $res );
- }
-
- protected function mysqlFetchObject( $res ) {
- return mysql_fetch_object( $res );
- }
-
- protected function mysqlFetchArray( $res ) {
- return mysql_fetch_array( $res );
- }
-
- protected function mysqlNumRows( $res ) {
- return mysql_num_rows( $res );
- }
-
- protected function mysqlNumFields( $res ) {
- return mysql_num_fields( $res );
- }
-
- protected function mysqlFetchField( $res, $n ) {
- return mysql_fetch_field( $res, $n );
- }
-
- protected function mysqlFieldName( $res, $n ) {
- return mysql_field_name( $res, $n );
- }
-
- protected function mysqlFieldType( $res, $n ) {
- return mysql_field_type( $res, $n );
- }
-
- protected function mysqlDataSeek( $res, $row ) {
- return mysql_data_seek( $res, $row );
- }
-
- protected function mysqlError( $conn = null ) {
- return ( $conn !== null ) ? mysql_error( $conn ) : mysql_error(); // avoid warning
- }
-
- protected function mysqlRealEscapeString( $s ) {
- $conn = $this->getBindingHandle();
-
- return mysql_real_escape_string( $s, $conn );
- }
-}
+++ /dev/null
-<?php
-/**
- * This is the MySQL database abstraction layer.
- *
- * 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 Database
- */
-
-/**
- * Database abstraction object for MySQL.
- * Defines methods independent on used MySQL extension.
- *
- * @ingroup Database
- * @since 1.22
- * @see Database
- */
-abstract class DatabaseMysqlBase extends DatabaseBase {
- /** @var MysqlMasterPos */
- protected $lastKnownReplicaPos;
- /** @var string Method to detect replica DB lag */
- protected $lagDetectionMethod;
- /** @var array Method to detect replica DB lag */
- protected $lagDetectionOptions = [];
- /** @var bool bool Whether to use GTID methods */
- protected $useGTIDs = false;
- /** @var string|null */
- protected $sslKeyPath;
- /** @var string|null */
- protected $sslCertPath;
- /** @var string|null */
- protected $sslCAPath;
- /** @var string[]|null */
- protected $sslCiphers;
- /** @var string sql_mode value to send on connection */
- protected $sqlMode;
- /** @var bool Use experimental UTF-8 transmission encoding */
- protected $utf8Mode;
-
- /** @var string|null */
- private $serverVersion = null;
-
- /**
- * Additional $params include:
- * - lagDetectionMethod : set to one of (Seconds_Behind_Master,pt-heartbeat).
- * pt-heartbeat assumes the table is at heartbeat.heartbeat
- * and uses UTC timestamps in the heartbeat.ts column.
- * (https://www.percona.com/doc/percona-toolkit/2.2/pt-heartbeat.html)
- * - lagDetectionOptions : if using pt-heartbeat, this can be set to an array map to change
- * the default behavior. Normally, the heartbeat row with the server
- * ID of this server's master will be used. Set the "conds" field to
- * override the query conditions, e.g. ['shard' => 's1'].
- * - useGTIDs : use GTID methods like MASTER_GTID_WAIT() when possible.
- * - sslKeyPath : path to key file [default: null]
- * - sslCertPath : path to certificate file [default: null]
- * - sslCAPath : parth to certificate authority PEM files [default: null]
- * - sslCiphers : array list of allowable ciphers [default: null]
- * @param array $params
- */
- function __construct( array $params ) {
- parent::__construct( $params );
-
- $this->lagDetectionMethod = isset( $params['lagDetectionMethod'] )
- ? $params['lagDetectionMethod']
- : 'Seconds_Behind_Master';
- $this->lagDetectionOptions = isset( $params['lagDetectionOptions'] )
- ? $params['lagDetectionOptions']
- : [];
- $this->useGTIDs = !empty( $params['useGTIDs' ] );
- foreach ( [ 'KeyPath', 'CertPath', 'CAPath', 'Ciphers' ] as $name ) {
- $var = "ssl{$name}";
- if ( isset( $params[$var] ) ) {
- $this->$var = $params[$var];
- }
- }
- $this->sqlMode = isset( $params['sqlMode'] ) ? $params['sqlMode'] : '';
- $this->utf8Mode = !empty( $params['utf8Mode'] );
- }
-
- /**
- * @return string
- */
- function getType() {
- return 'mysql';
- }
-
- /**
- * @param string $server
- * @param string $user
- * @param string $password
- * @param string $dbName
- * @throws Exception|DBConnectionError
- * @return bool
- */
- function open( $server, $user, $password, $dbName ) {
- # Close/unset connection handle
- $this->close();
-
- $this->mServer = $server;
- $this->mUser = $user;
- $this->mPassword = $password;
- $this->mDBname = $dbName;
-
- $this->installErrorHandler();
- try {
- $this->mConn = $this->mysqlConnect( $this->mServer );
- } catch ( Exception $ex ) {
- $this->restoreErrorHandler();
- throw $ex;
- }
- $error = $this->restoreErrorHandler();
-
- # Always log connection errors
- if ( !$this->mConn ) {
- if ( !$error ) {
- $error = $this->lastError();
- }
- $this->queryLogger->error(
- "Error connecting to {db_server}: {error}",
- $this->getLogContext( [
- 'method' => __METHOD__,
- 'error' => $error,
- ] )
- );
- $this->queryLogger->debug( "DB connection error\n" .
- "Server: $server, User: $user, Password: " .
- substr( $password, 0, 3 ) . "..., error: " . $error . "\n" );
-
- $this->reportConnectionError( $error );
- }
-
- if ( $dbName != '' ) {
- MediaWiki\suppressWarnings();
- $success = $this->selectDB( $dbName );
- MediaWiki\restoreWarnings();
- if ( !$success ) {
- $this->queryLogger->error(
- "Error selecting database {db_name} on server {db_server}",
- $this->getLogContext( [
- 'method' => __METHOD__,
- ] )
- );
- $this->queryLogger->debug(
- "Error selecting database $dbName on server {$this->mServer}" );
-
- $this->reportConnectionError( "Error selecting database $dbName" );
- }
- }
-
- // Tell the server what we're communicating with
- if ( !$this->connectInitCharset() ) {
- $this->reportConnectionError( "Error setting character set" );
- }
-
- // Abstract over any insane MySQL defaults
- $set = [ 'group_concat_max_len = 262144' ];
- // Set SQL mode, default is turning them all off, can be overridden or skipped with null
- if ( is_string( $this->sqlMode ) ) {
- $set[] = 'sql_mode = ' . $this->addQuotes( $this->sqlMode );
- }
- // Set any custom settings defined by site config
- // (e.g. https://dev.mysql.com/doc/refman/4.1/en/innodb-parameters.html)
- foreach ( $this->mSessionVars as $var => $val ) {
- // Escape strings but not numbers to avoid MySQL complaining
- if ( !is_int( $val ) && !is_float( $val ) ) {
- $val = $this->addQuotes( $val );
- }
- $set[] = $this->addIdentifierQuotes( $var ) . ' = ' . $val;
- }
-
- if ( $set ) {
- // Use doQuery() to avoid opening implicit transactions (DBO_TRX)
- $success = $this->doQuery( 'SET ' . implode( ', ', $set ) );
- if ( !$success ) {
- $this->queryLogger->error(
- 'Error setting MySQL variables on server {db_server} (check $wgSQLMode)',
- $this->getLogContext( [
- 'method' => __METHOD__,
- ] )
- );
- $this->reportConnectionError(
- 'Error setting MySQL variables on server {db_server} (check $wgSQLMode)' );
- }
- }
-
- $this->mOpened = true;
-
- return true;
- }
-
- /**
- * Set the character set information right after connection
- * @return bool
- */
- protected function connectInitCharset() {
- if ( $this->utf8Mode ) {
- // Tell the server we're communicating with it in UTF-8.
- // This may engage various charset conversions.
- return $this->mysqlSetCharset( 'utf8' );
- } else {
- return $this->mysqlSetCharset( 'binary' );
- }
- }
-
- /**
- * Open a connection to a MySQL server
- *
- * @param string $realServer
- * @return mixed Raw connection
- * @throws DBConnectionError
- */
- abstract protected function mysqlConnect( $realServer );
-
- /**
- * Set the character set of the MySQL link
- *
- * @param string $charset
- * @return bool
- */
- abstract protected function mysqlSetCharset( $charset );
-
- /**
- * @param ResultWrapper|resource $res
- * @throws DBUnexpectedError
- */
- function freeResult( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- MediaWiki\suppressWarnings();
- $ok = $this->mysqlFreeResult( $res );
- MediaWiki\restoreWarnings();
- if ( !$ok ) {
- throw new DBUnexpectedError( $this, "Unable to free MySQL result" );
- }
- }
-
- /**
- * Free result memory
- *
- * @param resource $res Raw result
- * @return bool
- */
- abstract protected function mysqlFreeResult( $res );
-
- /**
- * @param ResultWrapper|resource $res
- * @return stdClass|bool
- * @throws DBUnexpectedError
- */
- function fetchObject( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- MediaWiki\suppressWarnings();
- $row = $this->mysqlFetchObject( $res );
- MediaWiki\restoreWarnings();
-
- $errno = $this->lastErrno();
- // Unfortunately, mysql_fetch_object does not reset the last errno.
- // Only check for CR_SERVER_LOST and CR_UNKNOWN_ERROR, as
- // these are the only errors mysql_fetch_object can cause.
- // See http://dev.mysql.com/doc/refman/5.0/en/mysql-fetch-row.html.
- if ( $errno == 2000 || $errno == 2013 ) {
- throw new DBUnexpectedError(
- $this,
- 'Error in fetchObject(): ' . htmlspecialchars( $this->lastError() )
- );
- }
-
- return $row;
- }
-
- /**
- * Fetch a result row as an object
- *
- * @param resource $res Raw result
- * @return stdClass
- */
- abstract protected function mysqlFetchObject( $res );
-
- /**
- * @param ResultWrapper|resource $res
- * @return array|bool
- * @throws DBUnexpectedError
- */
- function fetchRow( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- MediaWiki\suppressWarnings();
- $row = $this->mysqlFetchArray( $res );
- MediaWiki\restoreWarnings();
-
- $errno = $this->lastErrno();
- // Unfortunately, mysql_fetch_array does not reset the last errno.
- // Only check for CR_SERVER_LOST and CR_UNKNOWN_ERROR, as
- // these are the only errors mysql_fetch_array can cause.
- // See http://dev.mysql.com/doc/refman/5.0/en/mysql-fetch-row.html.
- if ( $errno == 2000 || $errno == 2013 ) {
- throw new DBUnexpectedError(
- $this,
- 'Error in fetchRow(): ' . htmlspecialchars( $this->lastError() )
- );
- }
-
- return $row;
- }
-
- /**
- * Fetch a result row as an associative and numeric array
- *
- * @param resource $res Raw result
- * @return array
- */
- abstract protected function mysqlFetchArray( $res );
-
- /**
- * @throws DBUnexpectedError
- * @param ResultWrapper|resource $res
- * @return int
- */
- function numRows( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
- MediaWiki\suppressWarnings();
- $n = $this->mysqlNumRows( $res );
- MediaWiki\restoreWarnings();
-
- // Unfortunately, mysql_num_rows does not reset the last errno.
- // We are not checking for any errors here, since
- // these are no errors mysql_num_rows can cause.
- // See http://dev.mysql.com/doc/refman/5.0/en/mysql-fetch-row.html.
- // See https://phabricator.wikimedia.org/T44430
- return $n;
- }
-
- /**
- * Get number of rows in result
- *
- * @param resource $res Raw result
- * @return int
- */
- abstract protected function mysqlNumRows( $res );
-
- /**
- * @param ResultWrapper|resource $res
- * @return int
- */
- function numFields( $res ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
-
- return $this->mysqlNumFields( $res );
- }
-
- /**
- * Get number of fields in result
- *
- * @param resource $res Raw result
- * @return int
- */
- abstract protected function mysqlNumFields( $res );
-
- /**
- * @param ResultWrapper|resource $res
- * @param int $n
- * @return string
- */
- function fieldName( $res, $n ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
-
- return $this->mysqlFieldName( $res, $n );
- }
-
- /**
- * Get the name of the specified field in a result
- *
- * @param ResultWrapper|resource $res
- * @param int $n
- * @return string
- */
- abstract protected function mysqlFieldName( $res, $n );
-
- /**
- * mysql_field_type() wrapper
- * @param ResultWrapper|resource $res
- * @param int $n
- * @return string
- */
- public function fieldType( $res, $n ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
-
- return $this->mysqlFieldType( $res, $n );
- }
-
- /**
- * Get the type of the specified field in a result
- *
- * @param ResultWrapper|resource $res
- * @param int $n
- * @return string
- */
- abstract protected function mysqlFieldType( $res, $n );
-
- /**
- * @param ResultWrapper|resource $res
- * @param int $row
- * @return bool
- */
- function dataSeek( $res, $row ) {
- if ( $res instanceof ResultWrapper ) {
- $res = $res->result;
- }
-
- return $this->mysqlDataSeek( $res, $row );
- }
-
- /**
- * Move internal result pointer
- *
- * @param ResultWrapper|resource $res
- * @param int $row
- * @return bool
- */
- abstract protected function mysqlDataSeek( $res, $row );
-
- /**
- * @return string
- */
- function lastError() {
- if ( $this->mConn ) {
- # Even if it's non-zero, it can still be invalid
- MediaWiki\suppressWarnings();
- $error = $this->mysqlError( $this->mConn );
- if ( !$error ) {
- $error = $this->mysqlError();
- }
- MediaWiki\restoreWarnings();
- } else {
- $error = $this->mysqlError();
- }
- if ( $error ) {
- $error .= ' (' . $this->mServer . ')';
- }
-
- return $error;
- }
-
- /**
- * Returns the text of the error message from previous MySQL operation
- *
- * @param resource $conn Raw connection
- * @return string
- */
- abstract protected function mysqlError( $conn = null );
-
- /**
- * @param string $table
- * @param array $uniqueIndexes
- * @param array $rows
- * @param string $fname
- * @return ResultWrapper
- */
- function replace( $table, $uniqueIndexes, $rows, $fname = __METHOD__ ) {
- return $this->nativeReplace( $table, $rows, $fname );
- }
-
- /**
- * Estimate rows in dataset
- * Returns estimated count, based on EXPLAIN output
- * Takes same arguments as Database::select()
- *
- * @param string|array $table
- * @param string|array $vars
- * @param string|array $conds
- * @param string $fname
- * @param string|array $options
- * @return bool|int
- */
- public function estimateRowCount( $table, $vars = '*', $conds = '',
- $fname = __METHOD__, $options = []
- ) {
- $options['EXPLAIN'] = true;
- $res = $this->select( $table, $vars, $conds, $fname, $options );
- if ( $res === false ) {
- return false;
- }
- if ( !$this->numRows( $res ) ) {
- return 0;
- }
-
- $rows = 1;
- foreach ( $res as $plan ) {
- $rows *= $plan->rows > 0 ? $plan->rows : 1; // avoid resetting to zero
- }
-
- return (int)$rows;
- }
-
- /**
- * @param string $table
- * @param string $field
- * @return bool|MySQLField
- */
- function fieldInfo( $table, $field ) {
- $table = $this->tableName( $table );
- $res = $this->query( "SELECT * FROM $table LIMIT 1", __METHOD__, true );
- if ( !$res ) {
- return false;
- }
- $n = $this->mysqlNumFields( $res->result );
- for ( $i = 0; $i < $n; $i++ ) {
- $meta = $this->mysqlFetchField( $res->result, $i );
- if ( $field == $meta->name ) {
- return new MySQLField( $meta );
- }
- }
-
- return false;
- }
-
- /**
- * Get column information from a result
- *
- * @param resource $res Raw result
- * @param int $n
- * @return stdClass
- */
- abstract protected function mysqlFetchField( $res, $n );
-
- /**
- * Get information about an index into an object
- * Returns false if the index does not exist
- *
- * @param string $table
- * @param string $index
- * @param string $fname
- * @return bool|array|null False or null on failure
- */
- function indexInfo( $table, $index, $fname = __METHOD__ ) {
- # SHOW INDEX works in MySQL 3.23.58, but SHOW INDEXES does not.
- # SHOW INDEX should work for 3.x and up:
- # http://dev.mysql.com/doc/mysql/en/SHOW_INDEX.html
- $table = $this->tableName( $table );
- $index = $this->indexName( $index );
-
- $sql = 'SHOW INDEX FROM ' . $table;
- $res = $this->query( $sql, $fname );
-
- if ( !$res ) {
- return null;
- }
-
- $result = [];
-
- foreach ( $res as $row ) {
- if ( $row->Key_name == $index ) {
- $result[] = $row;
- }
- }
-
- return empty( $result ) ? false : $result;
- }
-
- /**
- * @param string $s
- * @return string
- */
- function strencode( $s ) {
- return $this->mysqlRealEscapeString( $s );
- }
-
- /**
- * @param string $s
- * @return mixed
- */
- abstract protected function mysqlRealEscapeString( $s );
-
- /**
- * MySQL uses `backticks` for identifier quoting instead of the sql standard "double quotes".
- *
- * @param string $s
- * @return string
- */
- public function addIdentifierQuotes( $s ) {
- // Characters in the range \u0001-\uFFFF are valid in a quoted identifier
- // Remove NUL bytes and escape backticks by doubling
- return '`' . str_replace( [ "\0", '`' ], [ '', '``' ], $s ) . '`';
- }
-
- /**
- * @param string $name
- * @return bool
- */
- public function isQuotedIdentifier( $name ) {
- return strlen( $name ) && $name[0] == '`' && substr( $name, -1, 1 ) == '`';
- }
-
- function getLag() {
- if ( $this->getLagDetectionMethod() === 'pt-heartbeat' ) {
- return $this->getLagFromPtHeartbeat();
- } else {
- return $this->getLagFromSlaveStatus();
- }
- }
-
- /**
- * @return string
- */
- protected function getLagDetectionMethod() {
- return $this->lagDetectionMethod;
- }
-
- /**
- * @return bool|int
- */
- protected function getLagFromSlaveStatus() {
- $res = $this->query( 'SHOW SLAVE STATUS', __METHOD__ );
- $row = $res ? $res->fetchObject() : false;
- if ( $row && strval( $row->Seconds_Behind_Master ) !== '' ) {
- return intval( $row->Seconds_Behind_Master );
- }
-
- return false;
- }
-
- /**
- * @return bool|float
- */
- protected function getLagFromPtHeartbeat() {
- $options = $this->lagDetectionOptions;
-
- if ( isset( $options['conds'] ) ) {
- // Best method for multi-DC setups: use logical channel names
- $data = $this->getHeartbeatData( $options['conds'] );
- } else {
- // Standard method: use master server ID (works with stock pt-heartbeat)
- $masterInfo = $this->getMasterServerInfo();
- if ( !$masterInfo ) {
- $this->queryLogger->error(
- "Unable to query master of {db_server} for server ID",
- $this->getLogContext( [
- 'method' => __METHOD__
- ] )
- );
-
- return false; // could not get master server ID
- }
-
- $conds = [ 'server_id' => intval( $masterInfo['serverId'] ) ];
- $data = $this->getHeartbeatData( $conds );
- }
-
- list( $time, $nowUnix ) = $data;
- if ( $time !== null ) {
- // @time is in ISO format like "2015-09-25T16:48:10.000510"
- $dateTime = new DateTime( $time, new DateTimeZone( 'UTC' ) );
- $timeUnix = (int)$dateTime->format( 'U' ) + $dateTime->format( 'u' ) / 1e6;
-
- return max( $nowUnix - $timeUnix, 0.0 );
- }
-
- $this->queryLogger->error(
- "Unable to find pt-heartbeat row for {db_server}",
- $this->getLogContext( [
- 'method' => __METHOD__
- ] )
- );
-
- return false;
- }
-
- protected function getMasterServerInfo() {
- $cache = $this->srvCache;
- $key = $cache->makeGlobalKey(
- 'mysql',
- 'master-info',
- // Using one key for all cluster replica DBs is preferable
- $this->getLBInfo( 'clusterMasterHost' ) ?: $this->getServer()
- );
-
- return $cache->getWithSetCallback(
- $key,
- $cache::TTL_INDEFINITE,
- function () use ( $cache, $key ) {
- // Get and leave a lock key in place for a short period
- if ( !$cache->lock( $key, 0, 10 ) ) {
- return false; // avoid master connection spike slams
- }
-
- $conn = $this->getLazyMasterHandle();
- if ( !$conn ) {
- return false; // something is misconfigured
- }
-
- // Connect to and query the master; catch errors to avoid outages
- try {
- $res = $conn->query( 'SELECT @@server_id AS id', __METHOD__ );
- $row = $res ? $res->fetchObject() : false;
- $id = $row ? (int)$row->id : 0;
- } catch ( DBError $e ) {
- $id = 0;
- }
-
- // Cache the ID if it was retrieved
- return $id ? [ 'serverId' => $id, 'asOf' => time() ] : false;
- }
- );
- }
-
- /**
- * @param array $conds WHERE clause conditions to find a row
- * @return array (heartbeat `ts` column value or null, UNIX timestamp) for the newest beat
- * @see https://www.percona.com/doc/percona-toolkit/2.1/pt-heartbeat.html
- */
- protected function getHeartbeatData( array $conds ) {
- $whereSQL = $this->makeList( $conds, LIST_AND );
- // Use ORDER BY for channel based queries since that field might not be UNIQUE.
- // Note: this would use "TIMESTAMPDIFF(MICROSECOND,ts,UTC_TIMESTAMP(6))" but the
- // percision field is not supported in MySQL <= 5.5.
- $res = $this->query(
- "SELECT ts FROM heartbeat.heartbeat WHERE $whereSQL ORDER BY ts DESC LIMIT 1"
- );
- $row = $res ? $res->fetchObject() : false;
-
- return [ $row ? $row->ts : null, microtime( true ) ];
- }
-
- public function getApproximateLagStatus() {
- if ( $this->getLagDetectionMethod() === 'pt-heartbeat' ) {
- // Disable caching since this is fast enough and we don't wan't
- // to be *too* pessimistic by having both the cache TTL and the
- // pt-heartbeat interval count as lag in getSessionLagStatus()
- return parent::getApproximateLagStatus();
- }
-
- $key = $this->srvCache->makeGlobalKey( 'mysql-lag', $this->getServer() );
- $approxLag = $this->srvCache->get( $key );
- if ( !$approxLag ) {
- $approxLag = parent::getApproximateLagStatus();
- $this->srvCache->set( $key, $approxLag, 1 );
- }
-
- return $approxLag;
- }
-
- function masterPosWait( DBMasterPos $pos, $timeout ) {
- if ( !( $pos instanceof MySQLMasterPos ) ) {
- throw new InvalidArgumentException( "Position not an instance of MySQLMasterPos" );
- }
-
- if ( $this->getLBInfo( 'is static' ) === true ) {
- return 0; // this is a copy of a read-only dataset with no master DB
- } elseif ( $this->lastKnownReplicaPos && $this->lastKnownReplicaPos->hasReached( $pos ) ) {
- return 0; // already reached this point for sure
- }
-
- // Call doQuery() directly, to avoid opening a transaction if DBO_TRX is set
- if ( $this->useGTIDs && $pos->gtids ) {
- // Wait on the GTID set (MariaDB only)
- $gtidArg = $this->addQuotes( implode( ',', $pos->gtids ) );
- $res = $this->doQuery( "SELECT MASTER_GTID_WAIT($gtidArg, $timeout)" );
- } else {
- // Wait on the binlog coordinates
- $encFile = $this->addQuotes( $pos->file );
- $encPos = intval( $pos->pos );
- $res = $this->doQuery( "SELECT MASTER_POS_WAIT($encFile, $encPos, $timeout)" );
- }
-
- $row = $res ? $this->fetchRow( $res ) : false;
- if ( !$row ) {
- throw new DBExpectedError( $this, "Failed to query MASTER_POS_WAIT()" );
- }
-
- // Result can be NULL (error), -1 (timeout), or 0+ per the MySQL manual
- $status = ( $row[0] !== null ) ? intval( $row[0] ) : null;
- if ( $status === null ) {
- // T126436: jobs programmed to wait on master positions might be referencing binlogs
- // with an old master hostname. Such calls make MASTER_POS_WAIT() return null. Try
- // to detect this and treat the replica DB as having reached the position; a proper master
- // switchover already requires that the new master be caught up before the switch.
- $replicationPos = $this->getSlavePos();
- if ( $replicationPos && !$replicationPos->channelsMatch( $pos ) ) {
- $this->lastKnownReplicaPos = $replicationPos;
- $status = 0;
- }
- } elseif ( $status >= 0 ) {
- // Remember that this position was reached to save queries next time
- $this->lastKnownReplicaPos = $pos;
- }
-
- return $status;
- }
-
- /**
- * Get the position of the master from SHOW SLAVE STATUS
- *
- * @return MySQLMasterPos|bool
- */
- function getSlavePos() {
- $res = $this->query( 'SHOW SLAVE STATUS', __METHOD__ );
- $row = $this->fetchObject( $res );
-
- if ( $row ) {
- $pos = isset( $row->Exec_master_log_pos )
- ? $row->Exec_master_log_pos
- : $row->Exec_Master_Log_Pos;
- // Also fetch the last-applied GTID set (MariaDB)
- if ( $this->useGTIDs ) {
- $res = $this->query( "SHOW GLOBAL VARIABLES LIKE 'gtid_slave_pos'", __METHOD__ );
- $gtidRow = $this->fetchObject( $res );
- $gtidSet = $gtidRow ? $gtidRow->Value : '';
- } else {
- $gtidSet = '';
- }
-
- return new MySQLMasterPos( $row->Relay_Master_Log_File, $pos, $gtidSet );
- } else {
- return false;
- }
- }
-
- /**
- * Get the position of the master from SHOW MASTER STATUS
- *
- * @return MySQLMasterPos|bool
- */
- function getMasterPos() {
- $res = $this->query( 'SHOW MASTER STATUS', __METHOD__ );
- $row = $this->fetchObject( $res );
-
- if ( $row ) {
- // Also fetch the last-written GTID set (MariaDB)
- if ( $this->useGTIDs ) {
- $res = $this->query( "SHOW GLOBAL VARIABLES LIKE 'gtid_binlog_pos'", __METHOD__ );
- $gtidRow = $this->fetchObject( $res );
- $gtidSet = $gtidRow ? $gtidRow->Value : '';
- } else {
- $gtidSet = '';
- }
-
- return new MySQLMasterPos( $row->File, $row->Position, $gtidSet );
- } else {
- return false;
- }
- }
-
- public function serverIsReadOnly() {
- $res = $this->query( "SHOW GLOBAL VARIABLES LIKE 'read_only'", __METHOD__ );
- $row = $this->fetchObject( $res );
-
- return $row ? ( strtolower( $row->Value ) === 'on' ) : false;
- }
-
- /**
- * @param string $index
- * @return string
- */
- function useIndexClause( $index ) {
- return "FORCE INDEX (" . $this->indexName( $index ) . ")";
- }
-
- /**
- * @param string $index
- * @return string
- */
- function ignoreIndexClause( $index ) {
- return "IGNORE INDEX (" . $this->indexName( $index ) . ")";
- }
-
- /**
- * @return string
- */
- function lowPriorityOption() {
- return 'LOW_PRIORITY';
- }
-
- /**
- * @return string
- */
- public function getSoftwareLink() {
- // MariaDB includes its name in its version string; this is how MariaDB's version of
- // the mysql command-line client identifies MariaDB servers (see mariadb_connection()
- // in libmysql/libmysql.c).
- $version = $this->getServerVersion();
- if ( strpos( $version, 'MariaDB' ) !== false || strpos( $version, '-maria-' ) !== false ) {
- return '[{{int:version-db-mariadb-url}} MariaDB]';
- }
-
- // Percona Server's version suffix is not very distinctive, and @@version_comment
- // doesn't give the necessary info for source builds, so assume the server is MySQL.
- // (Even Percona's version of mysql doesn't try to make the distinction.)
- return '[{{int:version-db-mysql-url}} MySQL]';
- }
-
- /**
- * @return string
- */
- public function getServerVersion() {
- // Not using mysql_get_server_info() or similar for consistency: in the handshake,
- // MariaDB 10 adds the prefix "5.5.5-", and only some newer client libraries strip
- // it off (see RPL_VERSION_HACK in include/mysql_com.h).
- if ( $this->serverVersion === null ) {
- $this->serverVersion = $this->selectField( '', 'VERSION()', '', __METHOD__ );
- }
- return $this->serverVersion;
- }
-
- /**
- * @param array $options
- */
- public function setSessionOptions( array $options ) {
- if ( isset( $options['connTimeout'] ) ) {
- $timeout = (int)$options['connTimeout'];
- $this->query( "SET net_read_timeout=$timeout" );
- $this->query( "SET net_write_timeout=$timeout" );
- }
- }
-
- /**
- * @param string $sql
- * @param string $newLine
- * @return bool
- */
- public function streamStatementEnd( &$sql, &$newLine ) {
- if ( strtoupper( substr( $newLine, 0, 9 ) ) == 'DELIMITER' ) {
- preg_match( '/^DELIMITER\s+(\S+)/', $newLine, $m );
- $this->delimiter = $m[1];
- $newLine = '';
- }
-
- return parent::streamStatementEnd( $sql, $newLine );
- }
-
- /**
- * Check to see if a named lock is available. This is non-blocking.
- *
- * @param string $lockName Name of lock to poll
- * @param string $method Name of method calling us
- * @return bool
- * @since 1.20
- */
- public function lockIsFree( $lockName, $method ) {
- $lockName = $this->addQuotes( $this->makeLockName( $lockName ) );
- $result = $this->query( "SELECT IS_FREE_LOCK($lockName) AS lockstatus", $method );
- $row = $this->fetchObject( $result );
-
- return ( $row->lockstatus == 1 );
- }
-
- /**
- * @param string $lockName
- * @param string $method
- * @param int $timeout
- * @return bool
- */
- public function lock( $lockName, $method, $timeout = 5 ) {
- $lockName = $this->addQuotes( $this->makeLockName( $lockName ) );
- $result = $this->query( "SELECT GET_LOCK($lockName, $timeout) AS lockstatus", $method );
- $row = $this->fetchObject( $result );
-
- if ( $row->lockstatus == 1 ) {
- parent::lock( $lockName, $method, $timeout ); // record
- return true;
- }
-
- $this->queryLogger->debug( __METHOD__ . " failed to acquire lock\n" );
-
- return false;
- }
-
- /**
- * FROM MYSQL DOCS:
- * http://dev.mysql.com/doc/refman/5.0/en/miscellaneous-functions.html#function_release-lock
- * @param string $lockName
- * @param string $method
- * @return bool
- */
- public function unlock( $lockName, $method ) {
- $lockName = $this->addQuotes( $this->makeLockName( $lockName ) );
- $result = $this->query( "SELECT RELEASE_LOCK($lockName) as lockstatus", $method );
- $row = $this->fetchObject( $result );
-
- if ( $row->lockstatus == 1 ) {
- parent::unlock( $lockName, $method ); // record
- return true;
- }
-
- $this->queryLogger->debug( __METHOD__ . " failed to release lock\n" );
-
- return false;
- }
-
- private function makeLockName( $lockName ) {
- // http://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html#function_get-lock
- // Newer version enforce a 64 char length limit.
- return ( strlen( $lockName ) > 64 ) ? sha1( $lockName ) : $lockName;
- }
-
- public function namedLocksEnqueue() {
- return true;
- }
-
- /**
- * @param array $read
- * @param array $write
- * @param string $method
- * @param bool $lowPriority
- * @return bool
- */
- public function lockTables( $read, $write, $method, $lowPriority = true ) {
- $items = [];
-
- foreach ( $write as $table ) {
- $tbl = $this->tableName( $table ) .
- ( $lowPriority ? ' LOW_PRIORITY' : '' ) .
- ' WRITE';
- $items[] = $tbl;
- }
- foreach ( $read as $table ) {
- $items[] = $this->tableName( $table ) . ' READ';
- }
- $sql = "LOCK TABLES " . implode( ',', $items );
- $this->query( $sql, $method );
-
- return true;
- }
-
- /**
- * @param string $method
- * @return bool
- */
- public function unlockTables( $method ) {
- $this->query( "UNLOCK TABLES", $method );
-
- return true;
- }
-
- /**
- * Get search engine class. All subclasses of this
- * need to implement this if they wish to use searching.
- *
- * @return string
- */
- public function getSearchEngine() {
- return 'SearchMySQL';
- }
-
- /**
- * @param bool $value
- */
- public function setBigSelects( $value = true ) {
- if ( $value === 'default' ) {
- if ( $this->mDefaultBigSelects === null ) {
- # Function hasn't been called before so it must already be set to the default
- return;
- } else {
- $value = $this->mDefaultBigSelects;
- }
- } elseif ( $this->mDefaultBigSelects === null ) {
- $this->mDefaultBigSelects =
- (bool)$this->selectField( false, '@@sql_big_selects', '', __METHOD__ );
- }
- $encValue = $value ? '1' : '0';
- $this->query( "SET sql_big_selects=$encValue", __METHOD__ );
- }
-
- /**
- * DELETE where the condition is a join. MySql uses multi-table deletes.
- * @param string $delTable
- * @param string $joinTable
- * @param string $delVar
- * @param string $joinVar
- * @param array|string $conds
- * @param bool|string $fname
- * @throws DBUnexpectedError
- * @return bool|ResultWrapper
- */
- function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = __METHOD__ ) {
- if ( !$conds ) {
- throw new DBUnexpectedError( $this, __METHOD__ . ' called with empty $conds' );
- }
-
- $delTable = $this->tableName( $delTable );
- $joinTable = $this->tableName( $joinTable );
- $sql = "DELETE $delTable FROM $delTable, $joinTable WHERE $delVar=$joinVar ";
-
- if ( $conds != '*' ) {
- $sql .= ' AND ' . $this->makeList( $conds, LIST_AND );
- }
-
- return $this->query( $sql, $fname );
- }
-
- /**
- * @param string $table
- * @param array $rows
- * @param array $uniqueIndexes
- * @param array $set
- * @param string $fname
- * @return bool
- */
- public function upsert( $table, array $rows, array $uniqueIndexes,
- array $set, $fname = __METHOD__
- ) {
- if ( !count( $rows ) ) {
- return true; // nothing to do
- }
-
- if ( !is_array( reset( $rows ) ) ) {
- $rows = [ $rows ];
- }
-
- $table = $this->tableName( $table );
- $columns = array_keys( $rows[0] );
-
- $sql = "INSERT INTO $table (" . implode( ',', $columns ) . ') VALUES ';
- $rowTuples = [];
- foreach ( $rows as $row ) {
- $rowTuples[] = '(' . $this->makeList( $row ) . ')';
- }
- $sql .= implode( ',', $rowTuples );
- $sql .= " ON DUPLICATE KEY UPDATE " . $this->makeList( $set, LIST_SET );
-
- return (bool)$this->query( $sql, $fname );
- }
-
- /**
- * Determines how long the server has been up
- *
- * @return int
- */
- function getServerUptime() {
- $vars = $this->getMysqlStatus( 'Uptime' );
-
- return (int)$vars['Uptime'];
- }
-
- /**
- * Determines if the last failure was due to a deadlock
- *
- * @return bool
- */
- function wasDeadlock() {
- return $this->lastErrno() == 1213;
- }
-
- /**
- * Determines if the last failure was due to a lock timeout
- *
- * @return bool
- */
- function wasLockTimeout() {
- return $this->lastErrno() == 1205;
- }
-
- function wasErrorReissuable() {
- return $this->lastErrno() == 2013 || $this->lastErrno() == 2006;
- }
-
- /**
- * Determines if the last failure was due to the database being read-only.
- *
- * @return bool
- */
- function wasReadOnlyError() {
- return $this->lastErrno() == 1223 ||
- ( $this->lastErrno() == 1290 && strpos( $this->lastError(), '--read-only' ) !== false );
- }
-
- function wasConnectionError( $errno ) {
- return $errno == 2013 || $errno == 2006;
- }
-
- /**
- * Get the underlying binding handle, mConn
- *
- * Makes sure that mConn is set (disconnects and ping() failure can unset it).
- * This catches broken callers than catch and ignore disconnection exceptions.
- * Unlike checking isOpen(), this is safe to call inside of open().
- *
- * @return resource|object
- * @throws DBUnexpectedError
- * @since 1.26
- */
- protected function getBindingHandle() {
- if ( !$this->mConn ) {
- throw new DBUnexpectedError(
- $this,
- 'DB connection was already closed or the connection dropped.'
- );
- }
-
- return $this->mConn;
- }
-
- /**
- * @param string $oldName
- * @param string $newName
- * @param bool $temporary
- * @param string $fname
- * @return bool
- */
- function duplicateTableStructure( $oldName, $newName, $temporary = false, $fname = __METHOD__ ) {
- $tmp = $temporary ? 'TEMPORARY ' : '';
- $newName = $this->addIdentifierQuotes( $newName );
- $oldName = $this->addIdentifierQuotes( $oldName );
- $query = "CREATE $tmp TABLE $newName (LIKE $oldName)";
-
- return $this->query( $query, $fname );
- }
-
- /**
- * List all tables on the database
- *
- * @param string $prefix Only show tables with this prefix, e.g. mw_
- * @param string $fname Calling function name
- * @return array
- */
- function listTables( $prefix = null, $fname = __METHOD__ ) {
- $result = $this->query( "SHOW TABLES", $fname );
-
- $endArray = [];
-
- foreach ( $result as $table ) {
- $vars = get_object_vars( $table );
- $table = array_pop( $vars );
-
- if ( !$prefix || strpos( $table, $prefix ) === 0 ) {
- $endArray[] = $table;
- }
- }
-
- return $endArray;
- }
-
- /**
- * @param string $tableName
- * @param string $fName
- * @return bool|ResultWrapper
- */
- public function dropTable( $tableName, $fName = __METHOD__ ) {
- if ( !$this->tableExists( $tableName, $fName ) ) {
- return false;
- }
-
- return $this->query( "DROP TABLE IF EXISTS " . $this->tableName( $tableName ), $fName );
- }
-
- /**
- * @return array
- */
- protected function getDefaultSchemaVars() {
- $vars = parent::getDefaultSchemaVars();
- $vars['wgDBTableOptions'] = str_replace( 'TYPE', 'ENGINE', $GLOBALS['wgDBTableOptions'] );
- $vars['wgDBTableOptions'] = str_replace(
- 'CHARSET=mysql4',
- 'CHARSET=binary',
- $vars['wgDBTableOptions']
- );
-
- return $vars;
- }
-
- /**
- * Get status information from SHOW STATUS in an associative array
- *
- * @param string $which
- * @return array
- */
- function getMysqlStatus( $which = "%" ) {
- $res = $this->query( "SHOW STATUS LIKE '{$which}'" );
- $status = [];
-
- foreach ( $res as $row ) {
- $status[$row->Variable_name] = $row->Value;
- }
-
- return $status;
- }
-
- /**
- * Lists VIEWs in the database
- *
- * @param string $prefix Only show VIEWs with this prefix, eg.
- * unit_test_, or $wgDBprefix. Default: null, would return all views.
- * @param string $fname Name of calling function
- * @return array
- * @since 1.22
- */
- public function listViews( $prefix = null, $fname = __METHOD__ ) {
-
- if ( !isset( $this->allViews ) ) {
-
- // The name of the column containing the name of the VIEW
- $propertyName = 'Tables_in_' . $this->mDBname;
-
- // Query for the VIEWS
- $result = $this->query( 'SHOW FULL TABLES WHERE TABLE_TYPE = "VIEW"' );
- $this->allViews = [];
- while ( ( $row = $this->fetchRow( $result ) ) !== false ) {
- array_push( $this->allViews, $row[$propertyName] );
- }
- }
-
- if ( is_null( $prefix ) || $prefix === '' ) {
- return $this->allViews;
- }
-
- $filteredViews = [];
- foreach ( $this->allViews as $viewName ) {
- // Does the name of this VIEW start with the table-prefix?
- if ( strpos( $viewName, $prefix ) === 0 ) {
- array_push( $filteredViews, $viewName );
- }
- }
-
- return $filteredViews;
- }
-
- /**
- * Differentiates between a TABLE and a VIEW.
- *
- * @param string $name Name of the TABLE/VIEW to test
- * @param string $prefix
- * @return bool
- * @since 1.22
- */
- public function isView( $name, $prefix = null ) {
- return in_array( $name, $this->listViews( $prefix ) );
- }
-}
-
+++ /dev/null
-<?php
-/**
- * This is the MySQLi database abstraction layer.
- *
- * 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 Database
- */
-
-/**
- * Database abstraction object for PHP extension mysqli.
- *
- * @ingroup Database
- * @since 1.22
- * @see Database
- */
-class DatabaseMysqli extends DatabaseMysqlBase {
- /** @var mysqli */
- protected $mConn;
-
- /**
- * @param string $sql
- * @return resource
- */
- protected function doQuery( $sql ) {
- $conn = $this->getBindingHandle();
-
- if ( $this->bufferResults() ) {
- $ret = $conn->query( $sql );
- } else {
- $ret = $conn->query( $sql, MYSQLI_USE_RESULT );
- }
-
- return $ret;
- }
-
- /**
- * @param string $realServer
- * @return bool|mysqli
- * @throws DBConnectionError
- */
- protected function mysqlConnect( $realServer ) {
- global $wgDBmysql5;
-
- # Avoid suppressed fatal error, which is very hard to track down
- if ( !function_exists( 'mysqli_init' ) ) {
- throw new DBConnectionError( $this, "MySQLi functions missing,"
- . " have you compiled PHP with the --with-mysqli option?\n" );
- }
-
- // Other than mysql_connect, mysqli_real_connect expects an explicit port
- // and socket parameters. So we need to parse the port and socket out of
- // $realServer
- $port = null;
- $socket = null;
- $hostAndPort = IP::splitHostAndPort( $realServer );
- if ( $hostAndPort ) {
- $realServer = $hostAndPort[0];
- if ( $hostAndPort[1] ) {
- $port = $hostAndPort[1];
- }
- } elseif ( substr_count( $realServer, ':' ) == 1 ) {
- // If we have a colon and something that's not a port number
- // inside the hostname, assume it's the socket location
- $hostAndSocket = explode( ':', $realServer );
- $realServer = $hostAndSocket[0];
- $socket = $hostAndSocket[1];
- }
-
- $mysqli = mysqli_init();
-
- $connFlags = 0;
- if ( $this->mFlags & DBO_SSL ) {
- $connFlags |= MYSQLI_CLIENT_SSL;
- $mysqli->ssl_set(
- $this->sslKeyPath,
- $this->sslCertPath,
- null,
- $this->sslCAPath,
- $this->sslCiphers
- );
- }
- if ( $this->mFlags & DBO_COMPRESS ) {
- $connFlags |= MYSQLI_CLIENT_COMPRESS;
- }
- if ( $this->mFlags & DBO_PERSISTENT ) {
- $realServer = 'p:' . $realServer;
- }
-
- if ( $wgDBmysql5 ) {
- // Tell the server we're communicating with it in UTF-8.
- // This may engage various charset conversions.
- $mysqli->options( MYSQLI_SET_CHARSET_NAME, 'utf8' );
- } else {
- $mysqli->options( MYSQLI_SET_CHARSET_NAME, 'binary' );
- }
- $mysqli->options( MYSQLI_OPT_CONNECT_TIMEOUT, 3 );
-
- if ( $mysqli->real_connect( $realServer, $this->mUser,
- $this->mPassword, $this->mDBname, $port, $socket, $connFlags )
- ) {
- return $mysqli;
- }
-
- return false;
- }
-
- protected function connectInitCharset() {
- // already done in mysqlConnect()
- return true;
- }
-
- /**
- * @param string $charset
- * @return bool
- */
- protected function mysqlSetCharset( $charset ) {
- $conn = $this->getBindingHandle();
-
- if ( method_exists( $conn, 'set_charset' ) ) {
- return $conn->set_charset( $charset );
- } else {
- return $this->query( 'SET NAMES ' . $charset, __METHOD__ );
- }
- }
-
- /**
- * @return bool
- */
- protected function closeConnection() {
- $conn = $this->getBindingHandle();
-
- return $conn->close();
- }
-
- /**
- * @return int
- */
- function insertId() {
- $conn = $this->getBindingHandle();
-
- return (int)$conn->insert_id;
- }
-
- /**
- * @return int
- */
- function lastErrno() {
- if ( $this->mConn ) {
- return $this->mConn->errno;
- } else {
- return mysqli_connect_errno();
- }
- }
-
- /**
- * @return int
- */
- function affectedRows() {
- $conn = $this->getBindingHandle();
-
- return $conn->affected_rows;
- }
-
- /**
- * @param string $db
- * @return bool
- */
- function selectDB( $db ) {
- $conn = $this->getBindingHandle();
-
- $this->mDBname = $db;
-
- return $conn->select_db( $db );
- }
-
- /**
- * @param mysqli $res
- * @return bool
- */
- protected function mysqlFreeResult( $res ) {
- $res->free_result();
-
- return true;
- }
-
- /**
- * @param mysqli $res
- * @return bool
- */
- protected function mysqlFetchObject( $res ) {
- $object = $res->fetch_object();
- if ( $object === null ) {
- return false;
- }
-
- return $object;
- }
-
- /**
- * @param mysqli $res
- * @return bool
- */
- protected function mysqlFetchArray( $res ) {
- $array = $res->fetch_array();
- if ( $array === null ) {
- return false;
- }
-
- return $array;
- }
-
- /**
- * @param mysqli $res
- * @return mixed
- */
- protected function mysqlNumRows( $res ) {
- return $res->num_rows;
- }
-
- /**
- * @param mysqli $res
- * @return mixed
- */
- protected function mysqlNumFields( $res ) {
- return $res->field_count;
- }
-
- /**
- * @param mysqli $res
- * @param int $n
- * @return mixed
- */
- protected function mysqlFetchField( $res, $n ) {
- $field = $res->fetch_field_direct( $n );
-
- // Add missing properties to result (using flags property)
- // which will be part of function mysql-fetch-field for backward compatibility
- $field->not_null = $field->flags & MYSQLI_NOT_NULL_FLAG;
- $field->primary_key = $field->flags & MYSQLI_PRI_KEY_FLAG;
- $field->unique_key = $field->flags & MYSQLI_UNIQUE_KEY_FLAG;
- $field->multiple_key = $field->flags & MYSQLI_MULTIPLE_KEY_FLAG;
- $field->binary = $field->flags & MYSQLI_BINARY_FLAG;
- $field->numeric = $field->flags & MYSQLI_NUM_FLAG;
- $field->blob = $field->flags & MYSQLI_BLOB_FLAG;
- $field->unsigned = $field->flags & MYSQLI_UNSIGNED_FLAG;
- $field->zerofill = $field->flags & MYSQLI_ZEROFILL_FLAG;
-
- return $field;
- }
-
- /**
- * @param resource|ResultWrapper $res
- * @param int $n
- * @return mixed
- */
- protected function mysqlFieldName( $res, $n ) {
- $field = $res->fetch_field_direct( $n );
-
- return $field->name;
- }
-
- /**
- * @param resource|ResultWrapper $res
- * @param int $n
- * @return mixed
- */
- protected function mysqlFieldType( $res, $n ) {
- $field = $res->fetch_field_direct( $n );
-
- return $field->type;
- }
-
- /**
- * @param resource|ResultWrapper $res
- * @param int $row
- * @return mixed
- */
- protected function mysqlDataSeek( $res, $row ) {
- return $res->data_seek( $row );
- }
-
- /**
- * @param mysqli $conn Optional connection object
- * @return string
- */
- protected function mysqlError( $conn = null ) {
- if ( $conn === null ) {
- return mysqli_connect_error();
- } else {
- return $conn->error;
- }
- }
-
- /**
- * Escapes special characters in a string for use in an SQL statement
- * @param string $s
- * @return string
- */
- protected function mysqlRealEscapeString( $s ) {
- $conn = $this->getBindingHandle();
-
- return $conn->real_escape_string( $s );
- }
-
- /**
- * Give an id for the connection
- *
- * mysql driver used resource id, but mysqli objects cannot be cast to string.
- * @return string
- */
- public function __toString() {
- if ( $this->mConn instanceof mysqli ) {
- return (string)$this->mConn->thread_id;
- } else {
- // mConn might be false or something.
- return (string)$this->mConn;
- }
- }
-}
--- /dev/null
+<?php
+/**
+ * This is the MySQL database abstraction layer.
+ *
+ * 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 Database
+ */
+
+/**
+ * Database abstraction object for PHP extension mysql.
+ *
+ * @ingroup Database
+ * @see Database
+ */
+class DatabaseMysql extends DatabaseMysqlBase {
+ /**
+ * @param string $sql
+ * @return resource False on error
+ */
+ protected function doQuery( $sql ) {
+ $conn = $this->getBindingHandle();
+
+ if ( $this->bufferResults() ) {
+ $ret = mysql_query( $sql, $conn );
+ } else {
+ $ret = mysql_unbuffered_query( $sql, $conn );
+ }
+
+ return $ret;
+ }
+
+ /**
+ * @param string $realServer
+ * @return bool|resource MySQL Database connection or false on failure to connect
+ * @throws DBConnectionError
+ */
+ protected function mysqlConnect( $realServer ) {
+ # Avoid a suppressed fatal error, which is very hard to track down
+ if ( !extension_loaded( 'mysql' ) ) {
+ throw new DBConnectionError(
+ $this,
+ "MySQL functions missing, have you compiled PHP with the --with-mysql option?\n"
+ );
+ }
+
+ $connFlags = 0;
+ if ( $this->mFlags & DBO_SSL ) {
+ $connFlags |= MYSQL_CLIENT_SSL;
+ }
+ if ( $this->mFlags & DBO_COMPRESS ) {
+ $connFlags |= MYSQL_CLIENT_COMPRESS;
+ }
+
+ if ( ini_get( 'mysql.connect_timeout' ) <= 3 ) {
+ $numAttempts = 2;
+ } else {
+ $numAttempts = 1;
+ }
+
+ $conn = false;
+
+ # The kernel's default SYN retransmission period is far too slow for us,
+ # so we use a short timeout plus a manual retry. Retrying means that a small
+ # but finite rate of SYN packet loss won't cause user-visible errors.
+ for ( $i = 0; $i < $numAttempts && !$conn; $i++ ) {
+ if ( $i > 1 ) {
+ usleep( 1000 );
+ }
+ if ( $this->mFlags & DBO_PERSISTENT ) {
+ $conn = mysql_pconnect( $realServer, $this->mUser, $this->mPassword, $connFlags );
+ } else {
+ # Create a new connection...
+ $conn = mysql_connect( $realServer, $this->mUser, $this->mPassword, true, $connFlags );
+ }
+ }
+
+ return $conn;
+ }
+
+ /**
+ * @param string $charset
+ * @return bool
+ */
+ protected function mysqlSetCharset( $charset ) {
+ $conn = $this->getBindingHandle();
+
+ if ( function_exists( 'mysql_set_charset' ) ) {
+ return mysql_set_charset( $charset, $conn );
+ } else {
+ return $this->query( 'SET NAMES ' . $charset, __METHOD__ );
+ }
+ }
+
+ /**
+ * @return bool
+ */
+ protected function closeConnection() {
+ $conn = $this->getBindingHandle();
+
+ return mysql_close( $conn );
+ }
+
+ /**
+ * @return int
+ */
+ function insertId() {
+ $conn = $this->getBindingHandle();
+
+ return mysql_insert_id( $conn );
+ }
+
+ /**
+ * @return int
+ */
+ function lastErrno() {
+ if ( $this->mConn ) {
+ return mysql_errno( $this->mConn );
+ } else {
+ return mysql_errno();
+ }
+ }
+
+ /**
+ * @return int
+ */
+ function affectedRows() {
+ $conn = $this->getBindingHandle();
+
+ return mysql_affected_rows( $conn );
+ }
+
+ /**
+ * @param string $db
+ * @return bool
+ */
+ function selectDB( $db ) {
+ $conn = $this->getBindingHandle();
+
+ $this->mDBname = $db;
+
+ return mysql_select_db( $db, $conn );
+ }
+
+ protected function mysqlFreeResult( $res ) {
+ return mysql_free_result( $res );
+ }
+
+ protected function mysqlFetchObject( $res ) {
+ return mysql_fetch_object( $res );
+ }
+
+ protected function mysqlFetchArray( $res ) {
+ return mysql_fetch_array( $res );
+ }
+
+ protected function mysqlNumRows( $res ) {
+ return mysql_num_rows( $res );
+ }
+
+ protected function mysqlNumFields( $res ) {
+ return mysql_num_fields( $res );
+ }
+
+ protected function mysqlFetchField( $res, $n ) {
+ return mysql_fetch_field( $res, $n );
+ }
+
+ protected function mysqlFieldName( $res, $n ) {
+ return mysql_field_name( $res, $n );
+ }
+
+ protected function mysqlFieldType( $res, $n ) {
+ return mysql_field_type( $res, $n );
+ }
+
+ protected function mysqlDataSeek( $res, $row ) {
+ return mysql_data_seek( $res, $row );
+ }
+
+ protected function mysqlError( $conn = null ) {
+ return ( $conn !== null ) ? mysql_error( $conn ) : mysql_error(); // avoid warning
+ }
+
+ protected function mysqlRealEscapeString( $s ) {
+ $conn = $this->getBindingHandle();
+
+ return mysql_real_escape_string( $s, $conn );
+ }
+}
--- /dev/null
+<?php
+/**
+ * This is the MySQL database abstraction layer.
+ *
+ * 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 Database
+ */
+
+/**
+ * Database abstraction object for MySQL.
+ * Defines methods independent on used MySQL extension.
+ *
+ * @ingroup Database
+ * @since 1.22
+ * @see Database
+ */
+abstract class DatabaseMysqlBase extends DatabaseBase {
+ /** @var MysqlMasterPos */
+ protected $lastKnownReplicaPos;
+ /** @var string Method to detect replica DB lag */
+ protected $lagDetectionMethod;
+ /** @var array Method to detect replica DB lag */
+ protected $lagDetectionOptions = [];
+ /** @var bool bool Whether to use GTID methods */
+ protected $useGTIDs = false;
+ /** @var string|null */
+ protected $sslKeyPath;
+ /** @var string|null */
+ protected $sslCertPath;
+ /** @var string|null */
+ protected $sslCAPath;
+ /** @var string[]|null */
+ protected $sslCiphers;
+ /** @var string sql_mode value to send on connection */
+ protected $sqlMode;
+ /** @var bool Use experimental UTF-8 transmission encoding */
+ protected $utf8Mode;
+
+ /** @var string|null */
+ private $serverVersion = null;
+
+ /**
+ * Additional $params include:
+ * - lagDetectionMethod : set to one of (Seconds_Behind_Master,pt-heartbeat).
+ * pt-heartbeat assumes the table is at heartbeat.heartbeat
+ * and uses UTC timestamps in the heartbeat.ts column.
+ * (https://www.percona.com/doc/percona-toolkit/2.2/pt-heartbeat.html)
+ * - lagDetectionOptions : if using pt-heartbeat, this can be set to an array map to change
+ * the default behavior. Normally, the heartbeat row with the server
+ * ID of this server's master will be used. Set the "conds" field to
+ * override the query conditions, e.g. ['shard' => 's1'].
+ * - useGTIDs : use GTID methods like MASTER_GTID_WAIT() when possible.
+ * - sslKeyPath : path to key file [default: null]
+ * - sslCertPath : path to certificate file [default: null]
+ * - sslCAPath : parth to certificate authority PEM files [default: null]
+ * - sslCiphers : array list of allowable ciphers [default: null]
+ * @param array $params
+ */
+ function __construct( array $params ) {
+ parent::__construct( $params );
+
+ $this->lagDetectionMethod = isset( $params['lagDetectionMethod'] )
+ ? $params['lagDetectionMethod']
+ : 'Seconds_Behind_Master';
+ $this->lagDetectionOptions = isset( $params['lagDetectionOptions'] )
+ ? $params['lagDetectionOptions']
+ : [];
+ $this->useGTIDs = !empty( $params['useGTIDs' ] );
+ foreach ( [ 'KeyPath', 'CertPath', 'CAPath', 'Ciphers' ] as $name ) {
+ $var = "ssl{$name}";
+ if ( isset( $params[$var] ) ) {
+ $this->$var = $params[$var];
+ }
+ }
+ $this->sqlMode = isset( $params['sqlMode'] ) ? $params['sqlMode'] : '';
+ $this->utf8Mode = !empty( $params['utf8Mode'] );
+ }
+
+ /**
+ * @return string
+ */
+ function getType() {
+ return 'mysql';
+ }
+
+ /**
+ * @param string $server
+ * @param string $user
+ * @param string $password
+ * @param string $dbName
+ * @throws Exception|DBConnectionError
+ * @return bool
+ */
+ function open( $server, $user, $password, $dbName ) {
+ # Close/unset connection handle
+ $this->close();
+
+ $this->mServer = $server;
+ $this->mUser = $user;
+ $this->mPassword = $password;
+ $this->mDBname = $dbName;
+
+ $this->installErrorHandler();
+ try {
+ $this->mConn = $this->mysqlConnect( $this->mServer );
+ } catch ( Exception $ex ) {
+ $this->restoreErrorHandler();
+ throw $ex;
+ }
+ $error = $this->restoreErrorHandler();
+
+ # Always log connection errors
+ if ( !$this->mConn ) {
+ if ( !$error ) {
+ $error = $this->lastError();
+ }
+ $this->queryLogger->error(
+ "Error connecting to {db_server}: {error}",
+ $this->getLogContext( [
+ 'method' => __METHOD__,
+ 'error' => $error,
+ ] )
+ );
+ $this->queryLogger->debug( "DB connection error\n" .
+ "Server: $server, User: $user, Password: " .
+ substr( $password, 0, 3 ) . "..., error: " . $error . "\n" );
+
+ $this->reportConnectionError( $error );
+ }
+
+ if ( $dbName != '' ) {
+ MediaWiki\suppressWarnings();
+ $success = $this->selectDB( $dbName );
+ MediaWiki\restoreWarnings();
+ if ( !$success ) {
+ $this->queryLogger->error(
+ "Error selecting database {db_name} on server {db_server}",
+ $this->getLogContext( [
+ 'method' => __METHOD__,
+ ] )
+ );
+ $this->queryLogger->debug(
+ "Error selecting database $dbName on server {$this->mServer}" );
+
+ $this->reportConnectionError( "Error selecting database $dbName" );
+ }
+ }
+
+ // Tell the server what we're communicating with
+ if ( !$this->connectInitCharset() ) {
+ $this->reportConnectionError( "Error setting character set" );
+ }
+
+ // Abstract over any insane MySQL defaults
+ $set = [ 'group_concat_max_len = 262144' ];
+ // Set SQL mode, default is turning them all off, can be overridden or skipped with null
+ if ( is_string( $this->sqlMode ) ) {
+ $set[] = 'sql_mode = ' . $this->addQuotes( $this->sqlMode );
+ }
+ // Set any custom settings defined by site config
+ // (e.g. https://dev.mysql.com/doc/refman/4.1/en/innodb-parameters.html)
+ foreach ( $this->mSessionVars as $var => $val ) {
+ // Escape strings but not numbers to avoid MySQL complaining
+ if ( !is_int( $val ) && !is_float( $val ) ) {
+ $val = $this->addQuotes( $val );
+ }
+ $set[] = $this->addIdentifierQuotes( $var ) . ' = ' . $val;
+ }
+
+ if ( $set ) {
+ // Use doQuery() to avoid opening implicit transactions (DBO_TRX)
+ $success = $this->doQuery( 'SET ' . implode( ', ', $set ) );
+ if ( !$success ) {
+ $this->queryLogger->error(
+ 'Error setting MySQL variables on server {db_server} (check $wgSQLMode)',
+ $this->getLogContext( [
+ 'method' => __METHOD__,
+ ] )
+ );
+ $this->reportConnectionError(
+ 'Error setting MySQL variables on server {db_server} (check $wgSQLMode)' );
+ }
+ }
+
+ $this->mOpened = true;
+
+ return true;
+ }
+
+ /**
+ * Set the character set information right after connection
+ * @return bool
+ */
+ protected function connectInitCharset() {
+ if ( $this->utf8Mode ) {
+ // Tell the server we're communicating with it in UTF-8.
+ // This may engage various charset conversions.
+ return $this->mysqlSetCharset( 'utf8' );
+ } else {
+ return $this->mysqlSetCharset( 'binary' );
+ }
+ }
+
+ /**
+ * Open a connection to a MySQL server
+ *
+ * @param string $realServer
+ * @return mixed Raw connection
+ * @throws DBConnectionError
+ */
+ abstract protected function mysqlConnect( $realServer );
+
+ /**
+ * Set the character set of the MySQL link
+ *
+ * @param string $charset
+ * @return bool
+ */
+ abstract protected function mysqlSetCharset( $charset );
+
+ /**
+ * @param ResultWrapper|resource $res
+ * @throws DBUnexpectedError
+ */
+ function freeResult( $res ) {
+ if ( $res instanceof ResultWrapper ) {
+ $res = $res->result;
+ }
+ MediaWiki\suppressWarnings();
+ $ok = $this->mysqlFreeResult( $res );
+ MediaWiki\restoreWarnings();
+ if ( !$ok ) {
+ throw new DBUnexpectedError( $this, "Unable to free MySQL result" );
+ }
+ }
+
+ /**
+ * Free result memory
+ *
+ * @param resource $res Raw result
+ * @return bool
+ */
+ abstract protected function mysqlFreeResult( $res );
+
+ /**
+ * @param ResultWrapper|resource $res
+ * @return stdClass|bool
+ * @throws DBUnexpectedError
+ */
+ function fetchObject( $res ) {
+ if ( $res instanceof ResultWrapper ) {
+ $res = $res->result;
+ }
+ MediaWiki\suppressWarnings();
+ $row = $this->mysqlFetchObject( $res );
+ MediaWiki\restoreWarnings();
+
+ $errno = $this->lastErrno();
+ // Unfortunately, mysql_fetch_object does not reset the last errno.
+ // Only check for CR_SERVER_LOST and CR_UNKNOWN_ERROR, as
+ // these are the only errors mysql_fetch_object can cause.
+ // See http://dev.mysql.com/doc/refman/5.0/en/mysql-fetch-row.html.
+ if ( $errno == 2000 || $errno == 2013 ) {
+ throw new DBUnexpectedError(
+ $this,
+ 'Error in fetchObject(): ' . htmlspecialchars( $this->lastError() )
+ );
+ }
+
+ return $row;
+ }
+
+ /**
+ * Fetch a result row as an object
+ *
+ * @param resource $res Raw result
+ * @return stdClass
+ */
+ abstract protected function mysqlFetchObject( $res );
+
+ /**
+ * @param ResultWrapper|resource $res
+ * @return array|bool
+ * @throws DBUnexpectedError
+ */
+ function fetchRow( $res ) {
+ if ( $res instanceof ResultWrapper ) {
+ $res = $res->result;
+ }
+ MediaWiki\suppressWarnings();
+ $row = $this->mysqlFetchArray( $res );
+ MediaWiki\restoreWarnings();
+
+ $errno = $this->lastErrno();
+ // Unfortunately, mysql_fetch_array does not reset the last errno.
+ // Only check for CR_SERVER_LOST and CR_UNKNOWN_ERROR, as
+ // these are the only errors mysql_fetch_array can cause.
+ // See http://dev.mysql.com/doc/refman/5.0/en/mysql-fetch-row.html.
+ if ( $errno == 2000 || $errno == 2013 ) {
+ throw new DBUnexpectedError(
+ $this,
+ 'Error in fetchRow(): ' . htmlspecialchars( $this->lastError() )
+ );
+ }
+
+ return $row;
+ }
+
+ /**
+ * Fetch a result row as an associative and numeric array
+ *
+ * @param resource $res Raw result
+ * @return array
+ */
+ abstract protected function mysqlFetchArray( $res );
+
+ /**
+ * @throws DBUnexpectedError
+ * @param ResultWrapper|resource $res
+ * @return int
+ */
+ function numRows( $res ) {
+ if ( $res instanceof ResultWrapper ) {
+ $res = $res->result;
+ }
+ MediaWiki\suppressWarnings();
+ $n = $this->mysqlNumRows( $res );
+ MediaWiki\restoreWarnings();
+
+ // Unfortunately, mysql_num_rows does not reset the last errno.
+ // We are not checking for any errors here, since
+ // these are no errors mysql_num_rows can cause.
+ // See http://dev.mysql.com/doc/refman/5.0/en/mysql-fetch-row.html.
+ // See https://phabricator.wikimedia.org/T44430
+ return $n;
+ }
+
+ /**
+ * Get number of rows in result
+ *
+ * @param resource $res Raw result
+ * @return int
+ */
+ abstract protected function mysqlNumRows( $res );
+
+ /**
+ * @param ResultWrapper|resource $res
+ * @return int
+ */
+ function numFields( $res ) {
+ if ( $res instanceof ResultWrapper ) {
+ $res = $res->result;
+ }
+
+ return $this->mysqlNumFields( $res );
+ }
+
+ /**
+ * Get number of fields in result
+ *
+ * @param resource $res Raw result
+ * @return int
+ */
+ abstract protected function mysqlNumFields( $res );
+
+ /**
+ * @param ResultWrapper|resource $res
+ * @param int $n
+ * @return string
+ */
+ function fieldName( $res, $n ) {
+ if ( $res instanceof ResultWrapper ) {
+ $res = $res->result;
+ }
+
+ return $this->mysqlFieldName( $res, $n );
+ }
+
+ /**
+ * Get the name of the specified field in a result
+ *
+ * @param ResultWrapper|resource $res
+ * @param int $n
+ * @return string
+ */
+ abstract protected function mysqlFieldName( $res, $n );
+
+ /**
+ * mysql_field_type() wrapper
+ * @param ResultWrapper|resource $res
+ * @param int $n
+ * @return string
+ */
+ public function fieldType( $res, $n ) {
+ if ( $res instanceof ResultWrapper ) {
+ $res = $res->result;
+ }
+
+ return $this->mysqlFieldType( $res, $n );
+ }
+
+ /**
+ * Get the type of the specified field in a result
+ *
+ * @param ResultWrapper|resource $res
+ * @param int $n
+ * @return string
+ */
+ abstract protected function mysqlFieldType( $res, $n );
+
+ /**
+ * @param ResultWrapper|resource $res
+ * @param int $row
+ * @return bool
+ */
+ function dataSeek( $res, $row ) {
+ if ( $res instanceof ResultWrapper ) {
+ $res = $res->result;
+ }
+
+ return $this->mysqlDataSeek( $res, $row );
+ }
+
+ /**
+ * Move internal result pointer
+ *
+ * @param ResultWrapper|resource $res
+ * @param int $row
+ * @return bool
+ */
+ abstract protected function mysqlDataSeek( $res, $row );
+
+ /**
+ * @return string
+ */
+ function lastError() {
+ if ( $this->mConn ) {
+ # Even if it's non-zero, it can still be invalid
+ MediaWiki\suppressWarnings();
+ $error = $this->mysqlError( $this->mConn );
+ if ( !$error ) {
+ $error = $this->mysqlError();
+ }
+ MediaWiki\restoreWarnings();
+ } else {
+ $error = $this->mysqlError();
+ }
+ if ( $error ) {
+ $error .= ' (' . $this->mServer . ')';
+ }
+
+ return $error;
+ }
+
+ /**
+ * Returns the text of the error message from previous MySQL operation
+ *
+ * @param resource $conn Raw connection
+ * @return string
+ */
+ abstract protected function mysqlError( $conn = null );
+
+ /**
+ * @param string $table
+ * @param array $uniqueIndexes
+ * @param array $rows
+ * @param string $fname
+ * @return ResultWrapper
+ */
+ function replace( $table, $uniqueIndexes, $rows, $fname = __METHOD__ ) {
+ return $this->nativeReplace( $table, $rows, $fname );
+ }
+
+ /**
+ * Estimate rows in dataset
+ * Returns estimated count, based on EXPLAIN output
+ * Takes same arguments as Database::select()
+ *
+ * @param string|array $table
+ * @param string|array $vars
+ * @param string|array $conds
+ * @param string $fname
+ * @param string|array $options
+ * @return bool|int
+ */
+ public function estimateRowCount( $table, $vars = '*', $conds = '',
+ $fname = __METHOD__, $options = []
+ ) {
+ $options['EXPLAIN'] = true;
+ $res = $this->select( $table, $vars, $conds, $fname, $options );
+ if ( $res === false ) {
+ return false;
+ }
+ if ( !$this->numRows( $res ) ) {
+ return 0;
+ }
+
+ $rows = 1;
+ foreach ( $res as $plan ) {
+ $rows *= $plan->rows > 0 ? $plan->rows : 1; // avoid resetting to zero
+ }
+
+ return (int)$rows;
+ }
+
+ /**
+ * @param string $table
+ * @param string $field
+ * @return bool|MySQLField
+ */
+ function fieldInfo( $table, $field ) {
+ $table = $this->tableName( $table );
+ $res = $this->query( "SELECT * FROM $table LIMIT 1", __METHOD__, true );
+ if ( !$res ) {
+ return false;
+ }
+ $n = $this->mysqlNumFields( $res->result );
+ for ( $i = 0; $i < $n; $i++ ) {
+ $meta = $this->mysqlFetchField( $res->result, $i );
+ if ( $field == $meta->name ) {
+ return new MySQLField( $meta );
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Get column information from a result
+ *
+ * @param resource $res Raw result
+ * @param int $n
+ * @return stdClass
+ */
+ abstract protected function mysqlFetchField( $res, $n );
+
+ /**
+ * Get information about an index into an object
+ * Returns false if the index does not exist
+ *
+ * @param string $table
+ * @param string $index
+ * @param string $fname
+ * @return bool|array|null False or null on failure
+ */
+ function indexInfo( $table, $index, $fname = __METHOD__ ) {
+ # SHOW INDEX works in MySQL 3.23.58, but SHOW INDEXES does not.
+ # SHOW INDEX should work for 3.x and up:
+ # http://dev.mysql.com/doc/mysql/en/SHOW_INDEX.html
+ $table = $this->tableName( $table );
+ $index = $this->indexName( $index );
+
+ $sql = 'SHOW INDEX FROM ' . $table;
+ $res = $this->query( $sql, $fname );
+
+ if ( !$res ) {
+ return null;
+ }
+
+ $result = [];
+
+ foreach ( $res as $row ) {
+ if ( $row->Key_name == $index ) {
+ $result[] = $row;
+ }
+ }
+
+ return empty( $result ) ? false : $result;
+ }
+
+ /**
+ * @param string $s
+ * @return string
+ */
+ function strencode( $s ) {
+ return $this->mysqlRealEscapeString( $s );
+ }
+
+ /**
+ * @param string $s
+ * @return mixed
+ */
+ abstract protected function mysqlRealEscapeString( $s );
+
+ /**
+ * MySQL uses `backticks` for identifier quoting instead of the sql standard "double quotes".
+ *
+ * @param string $s
+ * @return string
+ */
+ public function addIdentifierQuotes( $s ) {
+ // Characters in the range \u0001-\uFFFF are valid in a quoted identifier
+ // Remove NUL bytes and escape backticks by doubling
+ return '`' . str_replace( [ "\0", '`' ], [ '', '``' ], $s ) . '`';
+ }
+
+ /**
+ * @param string $name
+ * @return bool
+ */
+ public function isQuotedIdentifier( $name ) {
+ return strlen( $name ) && $name[0] == '`' && substr( $name, -1, 1 ) == '`';
+ }
+
+ function getLag() {
+ if ( $this->getLagDetectionMethod() === 'pt-heartbeat' ) {
+ return $this->getLagFromPtHeartbeat();
+ } else {
+ return $this->getLagFromSlaveStatus();
+ }
+ }
+
+ /**
+ * @return string
+ */
+ protected function getLagDetectionMethod() {
+ return $this->lagDetectionMethod;
+ }
+
+ /**
+ * @return bool|int
+ */
+ protected function getLagFromSlaveStatus() {
+ $res = $this->query( 'SHOW SLAVE STATUS', __METHOD__ );
+ $row = $res ? $res->fetchObject() : false;
+ if ( $row && strval( $row->Seconds_Behind_Master ) !== '' ) {
+ return intval( $row->Seconds_Behind_Master );
+ }
+
+ return false;
+ }
+
+ /**
+ * @return bool|float
+ */
+ protected function getLagFromPtHeartbeat() {
+ $options = $this->lagDetectionOptions;
+
+ if ( isset( $options['conds'] ) ) {
+ // Best method for multi-DC setups: use logical channel names
+ $data = $this->getHeartbeatData( $options['conds'] );
+ } else {
+ // Standard method: use master server ID (works with stock pt-heartbeat)
+ $masterInfo = $this->getMasterServerInfo();
+ if ( !$masterInfo ) {
+ $this->queryLogger->error(
+ "Unable to query master of {db_server} for server ID",
+ $this->getLogContext( [
+ 'method' => __METHOD__
+ ] )
+ );
+
+ return false; // could not get master server ID
+ }
+
+ $conds = [ 'server_id' => intval( $masterInfo['serverId'] ) ];
+ $data = $this->getHeartbeatData( $conds );
+ }
+
+ list( $time, $nowUnix ) = $data;
+ if ( $time !== null ) {
+ // @time is in ISO format like "2015-09-25T16:48:10.000510"
+ $dateTime = new DateTime( $time, new DateTimeZone( 'UTC' ) );
+ $timeUnix = (int)$dateTime->format( 'U' ) + $dateTime->format( 'u' ) / 1e6;
+
+ return max( $nowUnix - $timeUnix, 0.0 );
+ }
+
+ $this->queryLogger->error(
+ "Unable to find pt-heartbeat row for {db_server}",
+ $this->getLogContext( [
+ 'method' => __METHOD__
+ ] )
+ );
+
+ return false;
+ }
+
+ protected function getMasterServerInfo() {
+ $cache = $this->srvCache;
+ $key = $cache->makeGlobalKey(
+ 'mysql',
+ 'master-info',
+ // Using one key for all cluster replica DBs is preferable
+ $this->getLBInfo( 'clusterMasterHost' ) ?: $this->getServer()
+ );
+
+ return $cache->getWithSetCallback(
+ $key,
+ $cache::TTL_INDEFINITE,
+ function () use ( $cache, $key ) {
+ // Get and leave a lock key in place for a short period
+ if ( !$cache->lock( $key, 0, 10 ) ) {
+ return false; // avoid master connection spike slams
+ }
+
+ $conn = $this->getLazyMasterHandle();
+ if ( !$conn ) {
+ return false; // something is misconfigured
+ }
+
+ // Connect to and query the master; catch errors to avoid outages
+ try {
+ $res = $conn->query( 'SELECT @@server_id AS id', __METHOD__ );
+ $row = $res ? $res->fetchObject() : false;
+ $id = $row ? (int)$row->id : 0;
+ } catch ( DBError $e ) {
+ $id = 0;
+ }
+
+ // Cache the ID if it was retrieved
+ return $id ? [ 'serverId' => $id, 'asOf' => time() ] : false;
+ }
+ );
+ }
+
+ /**
+ * @param array $conds WHERE clause conditions to find a row
+ * @return array (heartbeat `ts` column value or null, UNIX timestamp) for the newest beat
+ * @see https://www.percona.com/doc/percona-toolkit/2.1/pt-heartbeat.html
+ */
+ protected function getHeartbeatData( array $conds ) {
+ $whereSQL = $this->makeList( $conds, LIST_AND );
+ // Use ORDER BY for channel based queries since that field might not be UNIQUE.
+ // Note: this would use "TIMESTAMPDIFF(MICROSECOND,ts,UTC_TIMESTAMP(6))" but the
+ // percision field is not supported in MySQL <= 5.5.
+ $res = $this->query(
+ "SELECT ts FROM heartbeat.heartbeat WHERE $whereSQL ORDER BY ts DESC LIMIT 1"
+ );
+ $row = $res ? $res->fetchObject() : false;
+
+ return [ $row ? $row->ts : null, microtime( true ) ];
+ }
+
+ public function getApproximateLagStatus() {
+ if ( $this->getLagDetectionMethod() === 'pt-heartbeat' ) {
+ // Disable caching since this is fast enough and we don't wan't
+ // to be *too* pessimistic by having both the cache TTL and the
+ // pt-heartbeat interval count as lag in getSessionLagStatus()
+ return parent::getApproximateLagStatus();
+ }
+
+ $key = $this->srvCache->makeGlobalKey( 'mysql-lag', $this->getServer() );
+ $approxLag = $this->srvCache->get( $key );
+ if ( !$approxLag ) {
+ $approxLag = parent::getApproximateLagStatus();
+ $this->srvCache->set( $key, $approxLag, 1 );
+ }
+
+ return $approxLag;
+ }
+
+ function masterPosWait( DBMasterPos $pos, $timeout ) {
+ if ( !( $pos instanceof MySQLMasterPos ) ) {
+ throw new InvalidArgumentException( "Position not an instance of MySQLMasterPos" );
+ }
+
+ if ( $this->getLBInfo( 'is static' ) === true ) {
+ return 0; // this is a copy of a read-only dataset with no master DB
+ } elseif ( $this->lastKnownReplicaPos && $this->lastKnownReplicaPos->hasReached( $pos ) ) {
+ return 0; // already reached this point for sure
+ }
+
+ // Call doQuery() directly, to avoid opening a transaction if DBO_TRX is set
+ if ( $this->useGTIDs && $pos->gtids ) {
+ // Wait on the GTID set (MariaDB only)
+ $gtidArg = $this->addQuotes( implode( ',', $pos->gtids ) );
+ $res = $this->doQuery( "SELECT MASTER_GTID_WAIT($gtidArg, $timeout)" );
+ } else {
+ // Wait on the binlog coordinates
+ $encFile = $this->addQuotes( $pos->file );
+ $encPos = intval( $pos->pos );
+ $res = $this->doQuery( "SELECT MASTER_POS_WAIT($encFile, $encPos, $timeout)" );
+ }
+
+ $row = $res ? $this->fetchRow( $res ) : false;
+ if ( !$row ) {
+ throw new DBExpectedError( $this, "Failed to query MASTER_POS_WAIT()" );
+ }
+
+ // Result can be NULL (error), -1 (timeout), or 0+ per the MySQL manual
+ $status = ( $row[0] !== null ) ? intval( $row[0] ) : null;
+ if ( $status === null ) {
+ // T126436: jobs programmed to wait on master positions might be referencing binlogs
+ // with an old master hostname. Such calls make MASTER_POS_WAIT() return null. Try
+ // to detect this and treat the replica DB as having reached the position; a proper master
+ // switchover already requires that the new master be caught up before the switch.
+ $replicationPos = $this->getSlavePos();
+ if ( $replicationPos && !$replicationPos->channelsMatch( $pos ) ) {
+ $this->lastKnownReplicaPos = $replicationPos;
+ $status = 0;
+ }
+ } elseif ( $status >= 0 ) {
+ // Remember that this position was reached to save queries next time
+ $this->lastKnownReplicaPos = $pos;
+ }
+
+ return $status;
+ }
+
+ /**
+ * Get the position of the master from SHOW SLAVE STATUS
+ *
+ * @return MySQLMasterPos|bool
+ */
+ function getSlavePos() {
+ $res = $this->query( 'SHOW SLAVE STATUS', __METHOD__ );
+ $row = $this->fetchObject( $res );
+
+ if ( $row ) {
+ $pos = isset( $row->Exec_master_log_pos )
+ ? $row->Exec_master_log_pos
+ : $row->Exec_Master_Log_Pos;
+ // Also fetch the last-applied GTID set (MariaDB)
+ if ( $this->useGTIDs ) {
+ $res = $this->query( "SHOW GLOBAL VARIABLES LIKE 'gtid_slave_pos'", __METHOD__ );
+ $gtidRow = $this->fetchObject( $res );
+ $gtidSet = $gtidRow ? $gtidRow->Value : '';
+ } else {
+ $gtidSet = '';
+ }
+
+ return new MySQLMasterPos( $row->Relay_Master_Log_File, $pos, $gtidSet );
+ } else {
+ return false;
+ }
+ }
+
+ /**
+ * Get the position of the master from SHOW MASTER STATUS
+ *
+ * @return MySQLMasterPos|bool
+ */
+ function getMasterPos() {
+ $res = $this->query( 'SHOW MASTER STATUS', __METHOD__ );
+ $row = $this->fetchObject( $res );
+
+ if ( $row ) {
+ // Also fetch the last-written GTID set (MariaDB)
+ if ( $this->useGTIDs ) {
+ $res = $this->query( "SHOW GLOBAL VARIABLES LIKE 'gtid_binlog_pos'", __METHOD__ );
+ $gtidRow = $this->fetchObject( $res );
+ $gtidSet = $gtidRow ? $gtidRow->Value : '';
+ } else {
+ $gtidSet = '';
+ }
+
+ return new MySQLMasterPos( $row->File, $row->Position, $gtidSet );
+ } else {
+ return false;
+ }
+ }
+
+ public function serverIsReadOnly() {
+ $res = $this->query( "SHOW GLOBAL VARIABLES LIKE 'read_only'", __METHOD__ );
+ $row = $this->fetchObject( $res );
+
+ return $row ? ( strtolower( $row->Value ) === 'on' ) : false;
+ }
+
+ /**
+ * @param string $index
+ * @return string
+ */
+ function useIndexClause( $index ) {
+ return "FORCE INDEX (" . $this->indexName( $index ) . ")";
+ }
+
+ /**
+ * @param string $index
+ * @return string
+ */
+ function ignoreIndexClause( $index ) {
+ return "IGNORE INDEX (" . $this->indexName( $index ) . ")";
+ }
+
+ /**
+ * @return string
+ */
+ function lowPriorityOption() {
+ return 'LOW_PRIORITY';
+ }
+
+ /**
+ * @return string
+ */
+ public function getSoftwareLink() {
+ // MariaDB includes its name in its version string; this is how MariaDB's version of
+ // the mysql command-line client identifies MariaDB servers (see mariadb_connection()
+ // in libmysql/libmysql.c).
+ $version = $this->getServerVersion();
+ if ( strpos( $version, 'MariaDB' ) !== false || strpos( $version, '-maria-' ) !== false ) {
+ return '[{{int:version-db-mariadb-url}} MariaDB]';
+ }
+
+ // Percona Server's version suffix is not very distinctive, and @@version_comment
+ // doesn't give the necessary info for source builds, so assume the server is MySQL.
+ // (Even Percona's version of mysql doesn't try to make the distinction.)
+ return '[{{int:version-db-mysql-url}} MySQL]';
+ }
+
+ /**
+ * @return string
+ */
+ public function getServerVersion() {
+ // Not using mysql_get_server_info() or similar for consistency: in the handshake,
+ // MariaDB 10 adds the prefix "5.5.5-", and only some newer client libraries strip
+ // it off (see RPL_VERSION_HACK in include/mysql_com.h).
+ if ( $this->serverVersion === null ) {
+ $this->serverVersion = $this->selectField( '', 'VERSION()', '', __METHOD__ );
+ }
+ return $this->serverVersion;
+ }
+
+ /**
+ * @param array $options
+ */
+ public function setSessionOptions( array $options ) {
+ if ( isset( $options['connTimeout'] ) ) {
+ $timeout = (int)$options['connTimeout'];
+ $this->query( "SET net_read_timeout=$timeout" );
+ $this->query( "SET net_write_timeout=$timeout" );
+ }
+ }
+
+ /**
+ * @param string $sql
+ * @param string $newLine
+ * @return bool
+ */
+ public function streamStatementEnd( &$sql, &$newLine ) {
+ if ( strtoupper( substr( $newLine, 0, 9 ) ) == 'DELIMITER' ) {
+ preg_match( '/^DELIMITER\s+(\S+)/', $newLine, $m );
+ $this->delimiter = $m[1];
+ $newLine = '';
+ }
+
+ return parent::streamStatementEnd( $sql, $newLine );
+ }
+
+ /**
+ * Check to see if a named lock is available. This is non-blocking.
+ *
+ * @param string $lockName Name of lock to poll
+ * @param string $method Name of method calling us
+ * @return bool
+ * @since 1.20
+ */
+ public function lockIsFree( $lockName, $method ) {
+ $lockName = $this->addQuotes( $this->makeLockName( $lockName ) );
+ $result = $this->query( "SELECT IS_FREE_LOCK($lockName) AS lockstatus", $method );
+ $row = $this->fetchObject( $result );
+
+ return ( $row->lockstatus == 1 );
+ }
+
+ /**
+ * @param string $lockName
+ * @param string $method
+ * @param int $timeout
+ * @return bool
+ */
+ public function lock( $lockName, $method, $timeout = 5 ) {
+ $lockName = $this->addQuotes( $this->makeLockName( $lockName ) );
+ $result = $this->query( "SELECT GET_LOCK($lockName, $timeout) AS lockstatus", $method );
+ $row = $this->fetchObject( $result );
+
+ if ( $row->lockstatus == 1 ) {
+ parent::lock( $lockName, $method, $timeout ); // record
+ return true;
+ }
+
+ $this->queryLogger->debug( __METHOD__ . " failed to acquire lock\n" );
+
+ return false;
+ }
+
+ /**
+ * FROM MYSQL DOCS:
+ * http://dev.mysql.com/doc/refman/5.0/en/miscellaneous-functions.html#function_release-lock
+ * @param string $lockName
+ * @param string $method
+ * @return bool
+ */
+ public function unlock( $lockName, $method ) {
+ $lockName = $this->addQuotes( $this->makeLockName( $lockName ) );
+ $result = $this->query( "SELECT RELEASE_LOCK($lockName) as lockstatus", $method );
+ $row = $this->fetchObject( $result );
+
+ if ( $row->lockstatus == 1 ) {
+ parent::unlock( $lockName, $method ); // record
+ return true;
+ }
+
+ $this->queryLogger->debug( __METHOD__ . " failed to release lock\n" );
+
+ return false;
+ }
+
+ private function makeLockName( $lockName ) {
+ // http://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html#function_get-lock
+ // Newer version enforce a 64 char length limit.
+ return ( strlen( $lockName ) > 64 ) ? sha1( $lockName ) : $lockName;
+ }
+
+ public function namedLocksEnqueue() {
+ return true;
+ }
+
+ /**
+ * @param array $read
+ * @param array $write
+ * @param string $method
+ * @param bool $lowPriority
+ * @return bool
+ */
+ public function lockTables( $read, $write, $method, $lowPriority = true ) {
+ $items = [];
+
+ foreach ( $write as $table ) {
+ $tbl = $this->tableName( $table ) .
+ ( $lowPriority ? ' LOW_PRIORITY' : '' ) .
+ ' WRITE';
+ $items[] = $tbl;
+ }
+ foreach ( $read as $table ) {
+ $items[] = $this->tableName( $table ) . ' READ';
+ }
+ $sql = "LOCK TABLES " . implode( ',', $items );
+ $this->query( $sql, $method );
+
+ return true;
+ }
+
+ /**
+ * @param string $method
+ * @return bool
+ */
+ public function unlockTables( $method ) {
+ $this->query( "UNLOCK TABLES", $method );
+
+ return true;
+ }
+
+ /**
+ * Get search engine class. All subclasses of this
+ * need to implement this if they wish to use searching.
+ *
+ * @return string
+ */
+ public function getSearchEngine() {
+ return 'SearchMySQL';
+ }
+
+ /**
+ * @param bool $value
+ */
+ public function setBigSelects( $value = true ) {
+ if ( $value === 'default' ) {
+ if ( $this->mDefaultBigSelects === null ) {
+ # Function hasn't been called before so it must already be set to the default
+ return;
+ } else {
+ $value = $this->mDefaultBigSelects;
+ }
+ } elseif ( $this->mDefaultBigSelects === null ) {
+ $this->mDefaultBigSelects =
+ (bool)$this->selectField( false, '@@sql_big_selects', '', __METHOD__ );
+ }
+ $encValue = $value ? '1' : '0';
+ $this->query( "SET sql_big_selects=$encValue", __METHOD__ );
+ }
+
+ /**
+ * DELETE where the condition is a join. MySql uses multi-table deletes.
+ * @param string $delTable
+ * @param string $joinTable
+ * @param string $delVar
+ * @param string $joinVar
+ * @param array|string $conds
+ * @param bool|string $fname
+ * @throws DBUnexpectedError
+ * @return bool|ResultWrapper
+ */
+ function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = __METHOD__ ) {
+ if ( !$conds ) {
+ throw new DBUnexpectedError( $this, __METHOD__ . ' called with empty $conds' );
+ }
+
+ $delTable = $this->tableName( $delTable );
+ $joinTable = $this->tableName( $joinTable );
+ $sql = "DELETE $delTable FROM $delTable, $joinTable WHERE $delVar=$joinVar ";
+
+ if ( $conds != '*' ) {
+ $sql .= ' AND ' . $this->makeList( $conds, LIST_AND );
+ }
+
+ return $this->query( $sql, $fname );
+ }
+
+ /**
+ * @param string $table
+ * @param array $rows
+ * @param array $uniqueIndexes
+ * @param array $set
+ * @param string $fname
+ * @return bool
+ */
+ public function upsert( $table, array $rows, array $uniqueIndexes,
+ array $set, $fname = __METHOD__
+ ) {
+ if ( !count( $rows ) ) {
+ return true; // nothing to do
+ }
+
+ if ( !is_array( reset( $rows ) ) ) {
+ $rows = [ $rows ];
+ }
+
+ $table = $this->tableName( $table );
+ $columns = array_keys( $rows[0] );
+
+ $sql = "INSERT INTO $table (" . implode( ',', $columns ) . ') VALUES ';
+ $rowTuples = [];
+ foreach ( $rows as $row ) {
+ $rowTuples[] = '(' . $this->makeList( $row ) . ')';
+ }
+ $sql .= implode( ',', $rowTuples );
+ $sql .= " ON DUPLICATE KEY UPDATE " . $this->makeList( $set, LIST_SET );
+
+ return (bool)$this->query( $sql, $fname );
+ }
+
+ /**
+ * Determines how long the server has been up
+ *
+ * @return int
+ */
+ function getServerUptime() {
+ $vars = $this->getMysqlStatus( 'Uptime' );
+
+ return (int)$vars['Uptime'];
+ }
+
+ /**
+ * Determines if the last failure was due to a deadlock
+ *
+ * @return bool
+ */
+ function wasDeadlock() {
+ return $this->lastErrno() == 1213;
+ }
+
+ /**
+ * Determines if the last failure was due to a lock timeout
+ *
+ * @return bool
+ */
+ function wasLockTimeout() {
+ return $this->lastErrno() == 1205;
+ }
+
+ function wasErrorReissuable() {
+ return $this->lastErrno() == 2013 || $this->lastErrno() == 2006;
+ }
+
+ /**
+ * Determines if the last failure was due to the database being read-only.
+ *
+ * @return bool
+ */
+ function wasReadOnlyError() {
+ return $this->lastErrno() == 1223 ||
+ ( $this->lastErrno() == 1290 && strpos( $this->lastError(), '--read-only' ) !== false );
+ }
+
+ function wasConnectionError( $errno ) {
+ return $errno == 2013 || $errno == 2006;
+ }
+
+ /**
+ * Get the underlying binding handle, mConn
+ *
+ * Makes sure that mConn is set (disconnects and ping() failure can unset it).
+ * This catches broken callers than catch and ignore disconnection exceptions.
+ * Unlike checking isOpen(), this is safe to call inside of open().
+ *
+ * @return resource|object
+ * @throws DBUnexpectedError
+ * @since 1.26
+ */
+ protected function getBindingHandle() {
+ if ( !$this->mConn ) {
+ throw new DBUnexpectedError(
+ $this,
+ 'DB connection was already closed or the connection dropped.'
+ );
+ }
+
+ return $this->mConn;
+ }
+
+ /**
+ * @param string $oldName
+ * @param string $newName
+ * @param bool $temporary
+ * @param string $fname
+ * @return bool
+ */
+ function duplicateTableStructure( $oldName, $newName, $temporary = false, $fname = __METHOD__ ) {
+ $tmp = $temporary ? 'TEMPORARY ' : '';
+ $newName = $this->addIdentifierQuotes( $newName );
+ $oldName = $this->addIdentifierQuotes( $oldName );
+ $query = "CREATE $tmp TABLE $newName (LIKE $oldName)";
+
+ return $this->query( $query, $fname );
+ }
+
+ /**
+ * List all tables on the database
+ *
+ * @param string $prefix Only show tables with this prefix, e.g. mw_
+ * @param string $fname Calling function name
+ * @return array
+ */
+ function listTables( $prefix = null, $fname = __METHOD__ ) {
+ $result = $this->query( "SHOW TABLES", $fname );
+
+ $endArray = [];
+
+ foreach ( $result as $table ) {
+ $vars = get_object_vars( $table );
+ $table = array_pop( $vars );
+
+ if ( !$prefix || strpos( $table, $prefix ) === 0 ) {
+ $endArray[] = $table;
+ }
+ }
+
+ return $endArray;
+ }
+
+ /**
+ * @param string $tableName
+ * @param string $fName
+ * @return bool|ResultWrapper
+ */
+ public function dropTable( $tableName, $fName = __METHOD__ ) {
+ if ( !$this->tableExists( $tableName, $fName ) ) {
+ return false;
+ }
+
+ return $this->query( "DROP TABLE IF EXISTS " . $this->tableName( $tableName ), $fName );
+ }
+
+ /**
+ * @return array
+ */
+ protected function getDefaultSchemaVars() {
+ $vars = parent::getDefaultSchemaVars();
+ $vars['wgDBTableOptions'] = str_replace( 'TYPE', 'ENGINE', $GLOBALS['wgDBTableOptions'] );
+ $vars['wgDBTableOptions'] = str_replace(
+ 'CHARSET=mysql4',
+ 'CHARSET=binary',
+ $vars['wgDBTableOptions']
+ );
+
+ return $vars;
+ }
+
+ /**
+ * Get status information from SHOW STATUS in an associative array
+ *
+ * @param string $which
+ * @return array
+ */
+ function getMysqlStatus( $which = "%" ) {
+ $res = $this->query( "SHOW STATUS LIKE '{$which}'" );
+ $status = [];
+
+ foreach ( $res as $row ) {
+ $status[$row->Variable_name] = $row->Value;
+ }
+
+ return $status;
+ }
+
+ /**
+ * Lists VIEWs in the database
+ *
+ * @param string $prefix Only show VIEWs with this prefix, eg.
+ * unit_test_, or $wgDBprefix. Default: null, would return all views.
+ * @param string $fname Name of calling function
+ * @return array
+ * @since 1.22
+ */
+ public function listViews( $prefix = null, $fname = __METHOD__ ) {
+
+ if ( !isset( $this->allViews ) ) {
+
+ // The name of the column containing the name of the VIEW
+ $propertyName = 'Tables_in_' . $this->mDBname;
+
+ // Query for the VIEWS
+ $result = $this->query( 'SHOW FULL TABLES WHERE TABLE_TYPE = "VIEW"' );
+ $this->allViews = [];
+ while ( ( $row = $this->fetchRow( $result ) ) !== false ) {
+ array_push( $this->allViews, $row[$propertyName] );
+ }
+ }
+
+ if ( is_null( $prefix ) || $prefix === '' ) {
+ return $this->allViews;
+ }
+
+ $filteredViews = [];
+ foreach ( $this->allViews as $viewName ) {
+ // Does the name of this VIEW start with the table-prefix?
+ if ( strpos( $viewName, $prefix ) === 0 ) {
+ array_push( $filteredViews, $viewName );
+ }
+ }
+
+ return $filteredViews;
+ }
+
+ /**
+ * Differentiates between a TABLE and a VIEW.
+ *
+ * @param string $name Name of the TABLE/VIEW to test
+ * @param string $prefix
+ * @return bool
+ * @since 1.22
+ */
+ public function isView( $name, $prefix = null ) {
+ return in_array( $name, $this->listViews( $prefix ) );
+ }
+}
+
--- /dev/null
+<?php
+/**
+ * This is the MySQLi database abstraction layer.
+ *
+ * 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 Database
+ */
+
+/**
+ * Database abstraction object for PHP extension mysqli.
+ *
+ * @ingroup Database
+ * @since 1.22
+ * @see Database
+ */
+class DatabaseMysqli extends DatabaseMysqlBase {
+ /** @var mysqli */
+ protected $mConn;
+
+ /**
+ * @param string $sql
+ * @return resource
+ */
+ protected function doQuery( $sql ) {
+ $conn = $this->getBindingHandle();
+
+ if ( $this->bufferResults() ) {
+ $ret = $conn->query( $sql );
+ } else {
+ $ret = $conn->query( $sql, MYSQLI_USE_RESULT );
+ }
+
+ return $ret;
+ }
+
+ /**
+ * @param string $realServer
+ * @return bool|mysqli
+ * @throws DBConnectionError
+ */
+ protected function mysqlConnect( $realServer ) {
+ global $wgDBmysql5;
+
+ # Avoid suppressed fatal error, which is very hard to track down
+ if ( !function_exists( 'mysqli_init' ) ) {
+ throw new DBConnectionError( $this, "MySQLi functions missing,"
+ . " have you compiled PHP with the --with-mysqli option?\n" );
+ }
+
+ // Other than mysql_connect, mysqli_real_connect expects an explicit port
+ // and socket parameters. So we need to parse the port and socket out of
+ // $realServer
+ $port = null;
+ $socket = null;
+ $hostAndPort = IP::splitHostAndPort( $realServer );
+ if ( $hostAndPort ) {
+ $realServer = $hostAndPort[0];
+ if ( $hostAndPort[1] ) {
+ $port = $hostAndPort[1];
+ }
+ } elseif ( substr_count( $realServer, ':' ) == 1 ) {
+ // If we have a colon and something that's not a port number
+ // inside the hostname, assume it's the socket location
+ $hostAndSocket = explode( ':', $realServer );
+ $realServer = $hostAndSocket[0];
+ $socket = $hostAndSocket[1];
+ }
+
+ $mysqli = mysqli_init();
+
+ $connFlags = 0;
+ if ( $this->mFlags & DBO_SSL ) {
+ $connFlags |= MYSQLI_CLIENT_SSL;
+ $mysqli->ssl_set(
+ $this->sslKeyPath,
+ $this->sslCertPath,
+ null,
+ $this->sslCAPath,
+ $this->sslCiphers
+ );
+ }
+ if ( $this->mFlags & DBO_COMPRESS ) {
+ $connFlags |= MYSQLI_CLIENT_COMPRESS;
+ }
+ if ( $this->mFlags & DBO_PERSISTENT ) {
+ $realServer = 'p:' . $realServer;
+ }
+
+ if ( $wgDBmysql5 ) {
+ // Tell the server we're communicating with it in UTF-8.
+ // This may engage various charset conversions.
+ $mysqli->options( MYSQLI_SET_CHARSET_NAME, 'utf8' );
+ } else {
+ $mysqli->options( MYSQLI_SET_CHARSET_NAME, 'binary' );
+ }
+ $mysqli->options( MYSQLI_OPT_CONNECT_TIMEOUT, 3 );
+
+ if ( $mysqli->real_connect( $realServer, $this->mUser,
+ $this->mPassword, $this->mDBname, $port, $socket, $connFlags )
+ ) {
+ return $mysqli;
+ }
+
+ return false;
+ }
+
+ protected function connectInitCharset() {
+ // already done in mysqlConnect()
+ return true;
+ }
+
+ /**
+ * @param string $charset
+ * @return bool
+ */
+ protected function mysqlSetCharset( $charset ) {
+ $conn = $this->getBindingHandle();
+
+ if ( method_exists( $conn, 'set_charset' ) ) {
+ return $conn->set_charset( $charset );
+ } else {
+ return $this->query( 'SET NAMES ' . $charset, __METHOD__ );
+ }
+ }
+
+ /**
+ * @return bool
+ */
+ protected function closeConnection() {
+ $conn = $this->getBindingHandle();
+
+ return $conn->close();
+ }
+
+ /**
+ * @return int
+ */
+ function insertId() {
+ $conn = $this->getBindingHandle();
+
+ return (int)$conn->insert_id;
+ }
+
+ /**
+ * @return int
+ */
+ function lastErrno() {
+ if ( $this->mConn ) {
+ return $this->mConn->errno;
+ } else {
+ return mysqli_connect_errno();
+ }
+ }
+
+ /**
+ * @return int
+ */
+ function affectedRows() {
+ $conn = $this->getBindingHandle();
+
+ return $conn->affected_rows;
+ }
+
+ /**
+ * @param string $db
+ * @return bool
+ */
+ function selectDB( $db ) {
+ $conn = $this->getBindingHandle();
+
+ $this->mDBname = $db;
+
+ return $conn->select_db( $db );
+ }
+
+ /**
+ * @param mysqli $res
+ * @return bool
+ */
+ protected function mysqlFreeResult( $res ) {
+ $res->free_result();
+
+ return true;
+ }
+
+ /**
+ * @param mysqli $res
+ * @return bool
+ */
+ protected function mysqlFetchObject( $res ) {
+ $object = $res->fetch_object();
+ if ( $object === null ) {
+ return false;
+ }
+
+ return $object;
+ }
+
+ /**
+ * @param mysqli $res
+ * @return bool
+ */
+ protected function mysqlFetchArray( $res ) {
+ $array = $res->fetch_array();
+ if ( $array === null ) {
+ return false;
+ }
+
+ return $array;
+ }
+
+ /**
+ * @param mysqli $res
+ * @return mixed
+ */
+ protected function mysqlNumRows( $res ) {
+ return $res->num_rows;
+ }
+
+ /**
+ * @param mysqli $res
+ * @return mixed
+ */
+ protected function mysqlNumFields( $res ) {
+ return $res->field_count;
+ }
+
+ /**
+ * @param mysqli $res
+ * @param int $n
+ * @return mixed
+ */
+ protected function mysqlFetchField( $res, $n ) {
+ $field = $res->fetch_field_direct( $n );
+
+ // Add missing properties to result (using flags property)
+ // which will be part of function mysql-fetch-field for backward compatibility
+ $field->not_null = $field->flags & MYSQLI_NOT_NULL_FLAG;
+ $field->primary_key = $field->flags & MYSQLI_PRI_KEY_FLAG;
+ $field->unique_key = $field->flags & MYSQLI_UNIQUE_KEY_FLAG;
+ $field->multiple_key = $field->flags & MYSQLI_MULTIPLE_KEY_FLAG;
+ $field->binary = $field->flags & MYSQLI_BINARY_FLAG;
+ $field->numeric = $field->flags & MYSQLI_NUM_FLAG;
+ $field->blob = $field->flags & MYSQLI_BLOB_FLAG;
+ $field->unsigned = $field->flags & MYSQLI_UNSIGNED_FLAG;
+ $field->zerofill = $field->flags & MYSQLI_ZEROFILL_FLAG;
+
+ return $field;
+ }
+
+ /**
+ * @param resource|ResultWrapper $res
+ * @param int $n
+ * @return mixed
+ */
+ protected function mysqlFieldName( $res, $n ) {
+ $field = $res->fetch_field_direct( $n );
+
+ return $field->name;
+ }
+
+ /**
+ * @param resource|ResultWrapper $res
+ * @param int $n
+ * @return mixed
+ */
+ protected function mysqlFieldType( $res, $n ) {
+ $field = $res->fetch_field_direct( $n );
+
+ return $field->type;
+ }
+
+ /**
+ * @param resource|ResultWrapper $res
+ * @param int $row
+ * @return mixed
+ */
+ protected function mysqlDataSeek( $res, $row ) {
+ return $res->data_seek( $row );
+ }
+
+ /**
+ * @param mysqli $conn Optional connection object
+ * @return string
+ */
+ protected function mysqlError( $conn = null ) {
+ if ( $conn === null ) {
+ return mysqli_connect_error();
+ } else {
+ return $conn->error;
+ }
+ }
+
+ /**
+ * Escapes special characters in a string for use in an SQL statement
+ * @param string $s
+ * @return string
+ */
+ protected function mysqlRealEscapeString( $s ) {
+ $conn = $this->getBindingHandle();
+
+ return $conn->real_escape_string( $s );
+ }
+
+ /**
+ * Give an id for the connection
+ *
+ * mysql driver used resource id, but mysqli objects cannot be cast to string.
+ * @return string
+ */
+ public function __toString() {
+ if ( $this->mConn instanceof mysqli ) {
+ return (string)$this->mConn->thread_id;
+ } else {
+ // mConn might be false or something.
+ return (string)$this->mConn;
+ }
+ }
+}
dépôts / lhc / web / wiklou.git / commitdiff