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784
msd2/tracking/piwik/core/Db.php
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784
msd2/tracking/piwik/core/Db.php
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<?php
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/**
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* Piwik - free/libre analytics platform
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*
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* @link http://piwik.org
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* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
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*
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*/
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namespace Piwik;
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use Exception;
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use Piwik\DataAccess\TableMetadata;
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use Piwik\Db\Adapter;
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/**
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* Contains SQL related helper functions for Piwik's MySQL database.
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*
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* Plugins should always use this class to execute SQL against the database.
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*
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* ### Examples
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*
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* $rows = Db::fetchAll("SELECT col1, col2 FROM mytable WHERE thing = ?", array('thingvalue'));
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* foreach ($rows as $row) {
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* doSomething($row['col1'], $row['col2']);
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* }
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*
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* $value = Db::fetchOne("SELECT MAX(col1) FROM mytable");
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* doSomethingElse($value);
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*
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* Db::query("DELETE FROM mytable WHERE id < ?", array(23));
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*
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* @api
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*/
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class Db
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{
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const SQL_MODE = 'NO_AUTO_VALUE_ON_ZERO';
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private static $connection = null;
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private static $logQueries = true;
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/**
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* Returns the database connection and creates it if it hasn't been already.
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*
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* @return \Piwik\Tracker\Db|\Piwik\Db\AdapterInterface|\Piwik\Db
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*/
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public static function get()
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{
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if (SettingsServer::isTrackerApiRequest()) {
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return Tracker::getDatabase();
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}
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if (!self::hasDatabaseObject()) {
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self::createDatabaseObject();
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}
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return self::$connection;
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}
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/**
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* Returns an array with the Database connection information.
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*
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* @param array|null $dbConfig
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* @return array
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*/
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public static function getDatabaseConfig($dbConfig = null)
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{
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$config = Config::getInstance();
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if (is_null($dbConfig)) {
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$dbConfig = $config->database;
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}
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/**
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* Triggered before a database connection is established.
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*
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* This event can be used to change the settings used to establish a connection.
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*
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* @param array *$dbInfos Reference to an array containing database connection info,
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* including:
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*
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* - **host**: The host name or IP address to the MySQL database.
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* - **username**: The username to use when connecting to the
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* database.
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* - **password**: The password to use when connecting to the
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* database.
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* - **dbname**: The name of the Piwik MySQL database.
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* - **port**: The MySQL database port to use.
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* - **adapter**: either `'PDO\MYSQL'` or `'MYSQLI'`
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* - **type**: The MySQL engine to use, for instance 'InnoDB'
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*/
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Piwik::postEvent('Db.getDatabaseConfig', array(&$dbConfig));
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$dbConfig['profiler'] = @$config->Debug['enable_sql_profiler'];
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return $dbConfig;
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}
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/**
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* For tests only.
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* @param $connection
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* @ignore
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* @internal
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*/
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public static function setDatabaseObject($connection)
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{
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self::$connection = $connection;
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}
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/**
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* Connects to the database.
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*
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* Shouldn't be called directly, use {@link get()} instead.
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*
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* @param array|null $dbConfig Connection parameters in an array. Defaults to the `[database]`
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* INI config section.
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*/
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public static function createDatabaseObject($dbConfig = null)
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{
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$dbConfig = self::getDatabaseConfig($dbConfig);
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$db = @Adapter::factory($dbConfig['adapter'], $dbConfig);
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self::$connection = $db;
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}
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/**
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* Detect whether a database object is initialized / created or not.
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*
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* @internal
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*/
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public static function hasDatabaseObject()
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{
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return isset(self::$connection);
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}
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/**
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* Disconnects and destroys the database connection.
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*
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* For tests.
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*/
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public static function destroyDatabaseObject()
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{
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if (self::hasDatabaseObject()) {
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DbHelper::disconnectDatabase();
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}
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self::$connection = null;
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}
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/**
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* Executes an unprepared SQL query. Recommended for DDL statements like `CREATE`,
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* `DROP` and `ALTER`. The return value is DBMS-specific. For MySQLI, it returns the
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* number of rows affected. For PDO, it returns a
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* [Zend_Db_Statement](http://framework.zend.com/manual/1.12/en/zend.db.statement.html) object.
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*
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* @param string $sql The SQL query.
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* @throws \Exception If there is an error in the SQL.
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* @return integer|\Zend_Db_Statement
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*/
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public static function exec($sql)
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{
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/** @var \Zend_Db_Adapter_Abstract $db */
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$db = self::get();
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$profiler = $db->getProfiler();
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$q = $profiler->queryStart($sql, \Zend_Db_Profiler::INSERT);
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try {
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self::logSql(__FUNCTION__, $sql);
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$return = self::get()->exec($sql);
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} catch (Exception $ex) {
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self::logExtraInfoIfDeadlock($ex);
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throw $ex;
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}
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$profiler->queryEnd($q);
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return $return;
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}
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/**
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* Executes an SQL query and returns the [Zend_Db_Statement](http://framework.zend.com/manual/1.12/en/zend.db.statement.html)
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* for the query.
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*
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* This method is meant for non-query SQL statements like `INSERT` and `UPDATE. If you want to fetch
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* data from the DB you should use one of the fetch... functions.
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*
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* @param string $sql The SQL query.
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* @param array $parameters Parameters to bind in the query, eg, `array(param1 => value1, param2 => value2)`.
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* @throws \Exception If there is a problem with the SQL or bind parameters.
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* @return \Zend_Db_Statement
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*/
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public static function query($sql, $parameters = array())
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{
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try {
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self::logSql(__FUNCTION__, $sql, $parameters);
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return self::get()->query($sql, $parameters);
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} catch (Exception $ex) {
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self::logExtraInfoIfDeadlock($ex);
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throw $ex;
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}
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}
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/**
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* Executes an SQL `SELECT` statement and returns all fetched rows from the result set.
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*
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* @param string $sql The SQL query.
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* @param array $parameters Parameters to bind in the query, eg, `array(param1 => value1, param2 => value2)`.
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* @throws \Exception If there is a problem with the SQL or bind parameters.
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* @return array The fetched rows, each element is an associative array mapping column names
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* with column values.
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*/
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public static function fetchAll($sql, $parameters = array())
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{
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try {
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self::logSql(__FUNCTION__, $sql, $parameters);
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return self::get()->fetchAll($sql, $parameters);
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} catch (Exception $ex) {
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self::logExtraInfoIfDeadlock($ex);
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throw $ex;
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}
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}
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/**
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* Executes an SQL `SELECT` statement and returns the first row of the result set.
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*
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* @param string $sql The SQL query.
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* @param array $parameters Parameters to bind in the query, eg, `array(param1 => value1, param2 => value2)`.
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* @throws \Exception If there is a problem with the SQL or bind parameters.
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* @return array The fetched row, each element is an associative array mapping column names
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* with column values.
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*/
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public static function fetchRow($sql, $parameters = array())
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{
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try {
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self::logSql(__FUNCTION__, $sql, $parameters);
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return self::get()->fetchRow($sql, $parameters);
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} catch (Exception $ex) {
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self::logExtraInfoIfDeadlock($ex);
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throw $ex;
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}
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}
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/**
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* Executes an SQL `SELECT` statement and returns the first column value of the first
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* row in the result set.
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*
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* @param string $sql The SQL query.
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* @param array $parameters Parameters to bind in the query, eg, `array(param1 => value1, param2 => value2)`.
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* @throws \Exception If there is a problem with the SQL or bind parameters.
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* @return string
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*/
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public static function fetchOne($sql, $parameters = array())
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{
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try {
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self::logSql(__FUNCTION__, $sql, $parameters);
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return self::get()->fetchOne($sql, $parameters);
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} catch (Exception $ex) {
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self::logExtraInfoIfDeadlock($ex);
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throw $ex;
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}
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}
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/**
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* Executes an SQL `SELECT` statement and returns the entire result set indexed by the first
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* selected field.
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*
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* @param string $sql The SQL query.
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* @param array $parameters Parameters to bind in the query, eg, `array(param1 => value1, param2 => value2)`.
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* @throws \Exception If there is a problem with the SQL or bind parameters.
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* @return array eg,
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* ```
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* array('col1value1' => array('col2' => '...', 'col3' => ...),
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* 'col1value2' => array('col2' => '...', 'col3' => ...))
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* ```
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*/
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public static function fetchAssoc($sql, $parameters = array())
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{
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try {
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self::logSql(__FUNCTION__, $sql, $parameters);
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return self::get()->fetchAssoc($sql, $parameters);
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} catch (Exception $ex) {
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self::logExtraInfoIfDeadlock($ex);
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throw $ex;
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}
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}
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/**
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* Deletes all desired rows in a table, while using a limit. This function will execute many
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* DELETE queries until there are no more rows to delete.
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*
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* Use this function when you need to delete many thousands of rows from a table without
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* locking the table for too long.
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*
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* **Example**
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*
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* // delete all visit rows whose ID is less than a certain value, 100000 rows at a time
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* $idVisit = // ...
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* Db::deleteAllRows(Common::prefixTable('log_visit'), "WHERE idvisit <= ?", "idvisit ASC", 100000, array($idVisit));
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*
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* @param string $table The name of the table to delete from. Must be prefixed (see {@link Piwik\Common::prefixTable()}).
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* @param string $where The where clause of the query. Must include the WHERE keyword.
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* @param string $orderBy The column to order by and the order by direction, eg, `idvisit ASC`.
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* @param int $maxRowsPerQuery The maximum number of rows to delete per `DELETE` query.
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* @param array $parameters Parameters to bind for each query.
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* @return int The total number of rows deleted.
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*/
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public static function deleteAllRows($table, $where, $orderBy, $maxRowsPerQuery = 100000, $parameters = array())
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{
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||||
$orderByClause = $orderBy ? "ORDER BY $orderBy" : "";
|
||||
|
||||
$sql = "DELETE FROM $table $where $orderByClause
|
||||
LIMIT " . (int)$maxRowsPerQuery;
|
||||
|
||||
// delete rows w/ a limit
|
||||
$totalRowsDeleted = 0;
|
||||
|
||||
do {
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||||
$rowsDeleted = self::query($sql, $parameters)->rowCount();
|
||||
|
||||
$totalRowsDeleted += $rowsDeleted;
|
||||
} while ($rowsDeleted >= $maxRowsPerQuery);
|
||||
|
||||
return $totalRowsDeleted;
|
||||
}
|
||||
|
||||
/**
|
||||
* Runs an `OPTIMIZE TABLE` query on the supplied table or tables.
|
||||
*
|
||||
* Tables will only be optimized if the `[General] enable_sql_optimize_queries` INI config option is
|
||||
* set to **1**.
|
||||
*
|
||||
* @param string|array $tables The name of the table to optimize or an array of tables to optimize.
|
||||
* Table names must be prefixed (see {@link Piwik\Common::prefixTable()}).
|
||||
* @param bool $force If true, the `OPTIMIZE TABLE` query will be run even if InnoDB tables are being used.
|
||||
* @return \Zend_Db_Statement
|
||||
*/
|
||||
public static function optimizeTables($tables, $force = false)
|
||||
{
|
||||
$optimize = Config::getInstance()->General['enable_sql_optimize_queries'];
|
||||
|
||||
if (empty($optimize)
|
||||
&& !$force
|
||||
) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (empty($tables)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!is_array($tables)) {
|
||||
$tables = array($tables);
|
||||
}
|
||||
|
||||
if (!self::isOptimizeInnoDBSupported()
|
||||
&& !$force
|
||||
) {
|
||||
// filter out all InnoDB tables
|
||||
$myisamDbTables = array();
|
||||
foreach (self::getTableStatus() as $row) {
|
||||
if (strtolower($row['Engine']) == 'myisam'
|
||||
&& in_array($row['Name'], $tables)
|
||||
) {
|
||||
$myisamDbTables[] = $row['Name'];
|
||||
}
|
||||
}
|
||||
|
||||
$tables = $myisamDbTables;
|
||||
}
|
||||
|
||||
if (empty($tables)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
// optimize the tables
|
||||
return self::query("OPTIMIZE TABLE " . implode(',', $tables));
|
||||
}
|
||||
|
||||
private static function getTableStatus()
|
||||
{
|
||||
return Db::fetchAll("SHOW TABLE STATUS");
|
||||
}
|
||||
|
||||
/**
|
||||
* Drops the supplied table or tables.
|
||||
*
|
||||
* @param string|array $tables The name of the table to drop or an array of table names to drop.
|
||||
* Table names must be prefixed (see {@link Piwik\Common::prefixTable()}).
|
||||
* @return \Zend_Db_Statement
|
||||
*/
|
||||
public static function dropTables($tables)
|
||||
{
|
||||
if (!is_array($tables)) {
|
||||
$tables = array($tables);
|
||||
}
|
||||
|
||||
return self::query("DROP TABLE `" . implode('`,`', $tables) . "`");
|
||||
}
|
||||
|
||||
/**
|
||||
* Drops all tables
|
||||
*/
|
||||
public static function dropAllTables()
|
||||
{
|
||||
$tablesAlreadyInstalled = DbHelper::getTablesInstalled();
|
||||
self::dropTables($tablesAlreadyInstalled);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get columns information from table
|
||||
*
|
||||
* @param string|array $table The name of the table you want to get the columns definition for.
|
||||
* @return \Zend_Db_Statement
|
||||
* @deprecated since 2.11.0
|
||||
*/
|
||||
public static function getColumnNamesFromTable($table)
|
||||
{
|
||||
$tableMetadataAccess = new TableMetadata();
|
||||
return $tableMetadataAccess->getColumns($table);
|
||||
}
|
||||
|
||||
/**
|
||||
* Locks the supplied table or tables.
|
||||
*
|
||||
* **NOTE:** Piwik does not require the `LOCK TABLES` privilege to be available. Piwik
|
||||
* should still work if it has not been granted.
|
||||
*
|
||||
* @param string|array $tablesToRead The table or tables to obtain 'read' locks on. Table names must
|
||||
* be prefixed (see {@link Piwik\Common::prefixTable()}).
|
||||
* @param string|array $tablesToWrite The table or tables to obtain 'write' locks on. Table names must
|
||||
* be prefixed (see {@link Piwik\Common::prefixTable()}).
|
||||
* @return \Zend_Db_Statement
|
||||
*/
|
||||
public static function lockTables($tablesToRead, $tablesToWrite = array())
|
||||
{
|
||||
if (!is_array($tablesToRead)) {
|
||||
$tablesToRead = array($tablesToRead);
|
||||
}
|
||||
|
||||
if (!is_array($tablesToWrite)) {
|
||||
$tablesToWrite = array($tablesToWrite);
|
||||
}
|
||||
|
||||
$lockExprs = array();
|
||||
foreach ($tablesToWrite as $table) {
|
||||
$lockExprs[] = $table . " WRITE";
|
||||
}
|
||||
|
||||
foreach ($tablesToRead as $table) {
|
||||
$lockExprs[] = $table . " READ";
|
||||
}
|
||||
|
||||
return self::exec("LOCK TABLES " . implode(', ', $lockExprs));
|
||||
}
|
||||
|
||||
/**
|
||||
* Releases all table locks.
|
||||
*
|
||||
* **NOTE:** Piwik does not require the `LOCK TABLES` privilege to be available. Piwik
|
||||
* should still work if it has not been granted.
|
||||
*
|
||||
* @return \Zend_Db_Statement
|
||||
*/
|
||||
public static function unlockAllTables()
|
||||
{
|
||||
return self::exec("UNLOCK TABLES");
|
||||
}
|
||||
|
||||
/**
|
||||
* Performs a `SELECT` statement on a table one chunk at a time and returns the first
|
||||
* successfully fetched value.
|
||||
*
|
||||
* This function will execute a query on one set of rows in a table. If nothing
|
||||
* is fetched, it will execute the query on the next set of rows and so on until
|
||||
* the query returns a value.
|
||||
*
|
||||
* This function will break up a `SELECT into several smaller `SELECT`s and
|
||||
* should be used when performing a `SELECT` that can take a long time to finish.
|
||||
* Using several smaller `SELECT`s will ensure that the table will not be locked
|
||||
* for too long.
|
||||
*
|
||||
* **Example**
|
||||
*
|
||||
* // find the most recent visit that is older than a certain date
|
||||
* $dateStart = // ...
|
||||
* $sql = "SELECT idvisit
|
||||
* FROM $logVisit
|
||||
* WHERE '$dateStart' > visit_last_action_time
|
||||
* AND idvisit <= ?
|
||||
* AND idvisit > ?
|
||||
* ORDER BY idvisit DESC
|
||||
* LIMIT 1";
|
||||
*
|
||||
* // since visits
|
||||
* return Db::segmentedFetchFirst($sql, $maxIdVisit, 0, -self::$selectSegmentSize);
|
||||
*
|
||||
* @param string $sql The SQL to perform. The last two conditions of the `WHERE`
|
||||
* expression must be as follows: `'id >= ? AND id < ?'` where
|
||||
* **id** is the int id of the table.
|
||||
* @param int $first The minimum ID to loop from.
|
||||
* @param int $last The maximum ID to loop to.
|
||||
* @param int $step The maximum number of rows to scan in one query.
|
||||
* @param array $params Parameters to bind in the query, eg, `array(param1 => value1, param2 => value2)`
|
||||
*
|
||||
* @return string
|
||||
*/
|
||||
public static function segmentedFetchFirst($sql, $first, $last, $step, $params = array())
|
||||
{
|
||||
$result = false;
|
||||
|
||||
if ($step > 0) {
|
||||
for ($i = $first; $result === false && $i <= $last; $i += $step) {
|
||||
$result = self::fetchOne($sql, array_merge($params, array($i, $i + $step)));
|
||||
}
|
||||
} else {
|
||||
for ($i = $first; $result === false && $i >= $last; $i += $step) {
|
||||
$result = self::fetchOne($sql, array_merge($params, array($i, $i + $step)));
|
||||
}
|
||||
}
|
||||
|
||||
return $result;
|
||||
}
|
||||
|
||||
/**
|
||||
* Performs a `SELECT` on a table one chunk at a time and returns an array
|
||||
* of every fetched value.
|
||||
*
|
||||
* This function will break up a `SELECT` query into several smaller queries by
|
||||
* using only a limited number of rows at a time. It will accumulate the results
|
||||
* of each smaller query and return the result.
|
||||
*
|
||||
* This function should be used when performing a `SELECT` that can
|
||||
* take a long time to finish. Using several smaller queries will ensure that
|
||||
* the table will not be locked for too long.
|
||||
*
|
||||
* @param string $sql The SQL to perform. The last two conditions of the `WHERE`
|
||||
* expression must be as follows: `'id >= ? AND id < ?'` where
|
||||
* **id** is the int id of the table.
|
||||
* @param int $first The minimum ID to loop from.
|
||||
* @param int $last The maximum ID to loop to.
|
||||
* @param int $step The maximum number of rows to scan in one query.
|
||||
* @param array $params Parameters to bind in the query, `array(param1 => value1, param2 => value2)`
|
||||
* @return array An array of primitive values.
|
||||
*/
|
||||
public static function segmentedFetchOne($sql, $first, $last, $step, $params = array())
|
||||
{
|
||||
$result = array();
|
||||
|
||||
if ($step > 0) {
|
||||
for ($i = $first; $i <= $last; $i += $step) {
|
||||
$result[] = self::fetchOne($sql, array_merge($params, array($i, $i + $step)));
|
||||
}
|
||||
} else {
|
||||
for ($i = $first; $i >= $last; $i += $step) {
|
||||
$result[] = self::fetchOne($sql, array_merge($params, array($i, $i + $step)));
|
||||
}
|
||||
}
|
||||
|
||||
return $result;
|
||||
}
|
||||
|
||||
/**
|
||||
* Performs a SELECT on a table one chunk at a time and returns an array
|
||||
* of every fetched row.
|
||||
*
|
||||
* This function will break up a `SELECT` query into several smaller queries by
|
||||
* using only a limited number of rows at a time. It will accumulate the results
|
||||
* of each smaller query and return the result.
|
||||
*
|
||||
* This function should be used when performing a `SELECT` that can
|
||||
* take a long time to finish. Using several smaller queries will ensure that
|
||||
* the table will not be locked for too long.
|
||||
*
|
||||
* @param string $sql The SQL to perform. The last two conditions of the `WHERE`
|
||||
* expression must be as follows: `'id >= ? AND id < ?'` where
|
||||
* **id** is the int id of the table.
|
||||
* @param int $first The minimum ID to loop from.
|
||||
* @param int $last The maximum ID to loop to.
|
||||
* @param int $step The maximum number of rows to scan in one query.
|
||||
* @param array $params Parameters to bind in the query, array( param1 => value1, param2 => value2)
|
||||
* @return array An array of rows that includes the result set of every smaller
|
||||
* query.
|
||||
*/
|
||||
public static function segmentedFetchAll($sql, $first, $last, $step, $params = array())
|
||||
{
|
||||
$result = array();
|
||||
|
||||
if ($step > 0) {
|
||||
for ($i = $first; $i <= $last; $i += $step) {
|
||||
$currentParams = array_merge($params, array($i, $i + $step));
|
||||
$result = array_merge($result, self::fetchAll($sql, $currentParams));
|
||||
}
|
||||
} else {
|
||||
for ($i = $first; $i >= $last; $i += $step) {
|
||||
$currentParams = array_merge($params, array($i, $i + $step));
|
||||
$result = array_merge($result, self::fetchAll($sql, $currentParams));
|
||||
}
|
||||
}
|
||||
|
||||
return $result;
|
||||
}
|
||||
|
||||
/**
|
||||
* Performs a `UPDATE` or `DELETE` statement on a table one chunk at a time.
|
||||
*
|
||||
* This function will break up a query into several smaller queries by
|
||||
* using only a limited number of rows at a time.
|
||||
*
|
||||
* This function should be used when executing a non-query statement will
|
||||
* take a long time to finish. Using several smaller queries will ensure that
|
||||
* the table will not be locked for too long.
|
||||
*
|
||||
* @param string $sql The SQL to perform. The last two conditions of the `WHERE`
|
||||
* expression must be as follows: `'id >= ? AND id < ?'` where
|
||||
* **id** is the int id of the table.
|
||||
* @param int $first The minimum ID to loop from.
|
||||
* @param int $last The maximum ID to loop to.
|
||||
* @param int $step The maximum number of rows to scan in one query.
|
||||
* @param array $params Parameters to bind in the query, `array(param1 => value1, param2 => value2)`
|
||||
*/
|
||||
public static function segmentedQuery($sql, $first, $last, $step, $params = array())
|
||||
{
|
||||
if ($step > 0) {
|
||||
for ($i = $first; $i <= $last; $i += $step) {
|
||||
$currentParams = array_merge($params, array($i, $i + $step));
|
||||
self::query($sql, $currentParams);
|
||||
}
|
||||
} else {
|
||||
for ($i = $first; $i >= $last; $i += $step) {
|
||||
$currentParams = array_merge($params, array($i, $i + $step));
|
||||
self::query($sql, $currentParams);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Attempts to get a named lock. This function uses a timeout of 1s, but will
|
||||
* retry a set number of times.
|
||||
*
|
||||
* @param string $lockName The lock name.
|
||||
* @param int $maxRetries The max number of times to retry.
|
||||
* @return bool `true` if the lock was obtained, `false` if otherwise.
|
||||
* @throws \Exception if Lock name is too long
|
||||
*/
|
||||
public static function getDbLock($lockName, $maxRetries = 30)
|
||||
{
|
||||
if (strlen($lockName) > 64) {
|
||||
throw new \Exception('DB lock name has to be 64 characters or less for MySQL 5.7 compatibility.');
|
||||
}
|
||||
|
||||
/*
|
||||
* the server (e.g., shared hosting) may have a low wait timeout
|
||||
* so instead of a single GET_LOCK() with a 30 second timeout,
|
||||
* we use a 1 second timeout and loop, to avoid losing our MySQL
|
||||
* connection
|
||||
*/
|
||||
$sql = 'SELECT GET_LOCK(?, 1)';
|
||||
|
||||
$db = self::get();
|
||||
|
||||
while ($maxRetries > 0) {
|
||||
$result = $db->fetchOne($sql, array($lockName));
|
||||
if ($result == '1') {
|
||||
return true;
|
||||
}
|
||||
$maxRetries--;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Releases a named lock.
|
||||
*
|
||||
* @param string $lockName The lock name.
|
||||
* @return bool `true` if the lock was released, `false` if otherwise.
|
||||
*/
|
||||
public static function releaseDbLock($lockName)
|
||||
{
|
||||
$sql = 'SELECT RELEASE_LOCK(?)';
|
||||
|
||||
$db = self::get();
|
||||
return $db->fetchOne($sql, array($lockName)) == '1';
|
||||
}
|
||||
|
||||
/**
|
||||
* Cached result of isLockprivilegeGranted function.
|
||||
*
|
||||
* Public so tests can simulate the situation where the lock tables privilege isn't granted.
|
||||
*
|
||||
* @var bool
|
||||
* @ignore
|
||||
*/
|
||||
public static $lockPrivilegeGranted = null;
|
||||
|
||||
/**
|
||||
* Checks whether the database user is allowed to lock tables.
|
||||
*
|
||||
* @return bool
|
||||
*/
|
||||
public static function isLockPrivilegeGranted()
|
||||
{
|
||||
if (is_null(self::$lockPrivilegeGranted)) {
|
||||
try {
|
||||
Db::lockTables(Common::prefixTable('log_visit'));
|
||||
Db::unlockAllTables();
|
||||
|
||||
self::$lockPrivilegeGranted = true;
|
||||
} catch (Exception $ex) {
|
||||
self::$lockPrivilegeGranted = false;
|
||||
}
|
||||
}
|
||||
|
||||
return self::$lockPrivilegeGranted;
|
||||
}
|
||||
|
||||
private static function logExtraInfoIfDeadlock($ex)
|
||||
{
|
||||
if (!self::get()->isErrNo($ex, 1213)
|
||||
&& !self::get()->isErrNo($ex, 1205)
|
||||
) {
|
||||
return;
|
||||
}
|
||||
|
||||
try {
|
||||
$deadlockInfo = self::fetchAll("SHOW ENGINE INNODB STATUS");
|
||||
|
||||
// log using exception so backtrace appears in log output
|
||||
Log::debug(new Exception("Encountered deadlock: " . print_r($deadlockInfo, true)));
|
||||
} catch(\Exception $e) {
|
||||
// 1227 Access denied; you need (at least one of) the PROCESS privilege(s) for this operation
|
||||
}
|
||||
}
|
||||
|
||||
private static function logSql($functionName, $sql, $parameters = array())
|
||||
{
|
||||
if (self::$logQueries === false
|
||||
|| @Config::getInstance()->Debug['log_sql_queries'] != 1
|
||||
) {
|
||||
return;
|
||||
}
|
||||
|
||||
// NOTE: at the moment we don't log parameters in order to avoid sensitive information leaks
|
||||
Log::debug("Db::%s() executing SQL: %s", $functionName, $sql);
|
||||
}
|
||||
|
||||
/**
|
||||
* @param bool $enable
|
||||
*/
|
||||
public static function enableQueryLog($enable)
|
||||
{
|
||||
self::$logQueries = $enable;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return boolean
|
||||
*/
|
||||
public static function isQueryLogEnabled()
|
||||
{
|
||||
return self::$logQueries;
|
||||
}
|
||||
|
||||
public static function isOptimizeInnoDBSupported($version = null)
|
||||
{
|
||||
if ($version === null) {
|
||||
$version = Db::fetchOne("SELECT VERSION()");
|
||||
}
|
||||
|
||||
$version = strtolower($version);
|
||||
|
||||
if (strpos($version, "mariadb") === false) {
|
||||
return false;
|
||||
}
|
||||
|
||||
$semanticVersion = strstr($version, '-', $beforeNeedle = true);
|
||||
return version_compare($semanticVersion, '10.1.1', '>=');
|
||||
}
|
||||
}
|
Reference in New Issue
Block a user