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<?php
/**
* Part of the Joomla Framework Database Package
*
* @copyright Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
namespace Joomla\Database\Monitor;
use Joomla\Database\QueryMonitorInterface;
/**
* Query monitor handling logging of queries.
*
* @since 2.0.0
*/
final class DebugMonitor implements QueryMonitorInterface
{
/**
* The log of executed SQL statements call stacks by the database driver.
*
* @var array
* @since 2.0.0
*/
private $callStacks = [];
/**
* The log of executed SQL statements by the database driver.
*
* @var array
* @since 2.0.0
*/
private $logs = [];
/**
* List of bound params, used with the query.
*
* @var array
* @since 2.0.0
*/
private $boundParams = [];
/**
* The log of executed SQL statements memory usage (start and stop memory_get_usage) by the database driver.
*
* @var array
* @since 2.0.0
*/
private $memoryLogs = [];
/**
* The log of executed SQL statements timings (start and stop microtimes) by the database driver.
*
* @var array
* @since 2.0.0
*/
private $timings = [];
/**
* Act on a query being started.
*
* @param string $sql The SQL to be executed.
* @param object[]|null $boundParams List of bound params, used with the query.
* Each item is an object that holds: value, dataType
*
* @return void
*
* @since 2.0.0
*/
public function startQuery(string $sql, ?array $boundParams = null): void
{
$this->logs[] = $sql;
// Dereference bound parameters to prevent reporting wrong value when reusing the same query object.
$this->boundParams[] = unserialize(serialize($boundParams));
$this->callStacks[] = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
$this->memoryLogs[] = memory_get_usage();
$this->timings[] = microtime(true);
}
/**
* Act on a query being stopped.
*
* @return void
*
* @since 2.0.0
*/
public function stopQuery(): void
{
$this->timings[] = microtime(true);
$this->memoryLogs[] = memory_get_usage();
}
/**
* Get the logged call stacks.
*
* @return array
*
* @since 2.0.0
*/
public function getCallStacks(): array
{
return $this->callStacks;
}
/**
* Get the logged queries.
*
* @return array
*
* @since 2.0.0
*/
public function getLogs(): array
{
return $this->logs;
}
/**
* Get the logged bound params.
*
* @return array
*
* @since 2.0.0
*/
public function getBoundParams(): array
{
return $this->boundParams;
}
/**
* Get the logged memory logs.
*
* @return array
*
* @since 2.0.0
*/
public function getMemoryLogs(): array
{
return $this->memoryLogs;
}
/**
* Get the logged timings.
*
* @return array
*
* @since 2.0.0
*/
public function getTimings(): array
{
return $this->timings;
}
}