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<?php
/**
* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OC\Diagnostics;
use OCP\Cache\CappedMemoryCache;
use OCP\Diagnostics\IQueryLogger;
class QueryLogger implements IQueryLogger {
protected int $index = 0;
protected ?Query $activeQuery = null;
/** @var CappedMemoryCache<Query> */
protected CappedMemoryCache $queries;
/**
* QueryLogger constructor.
*/
public function __construct() {
$this->queries = new CappedMemoryCache(1024);
}
/**
* @var bool - Module needs to be activated by some app
*/
private $activated = false;
/**
* @inheritdoc
*/
public function startQuery($sql, ?array $params = null, ?array $types = null) {
if ($this->activated) {
$this->activeQuery = new Query($sql, $params, microtime(true), $this->getStack());
}
}
private function getStack() {
$stack = debug_backtrace();
array_shift($stack);
array_shift($stack);
array_shift($stack);
return $stack;
}
/**
* @inheritdoc
*/
public function stopQuery() {
if ($this->activated && $this->activeQuery) {
$this->activeQuery->end(microtime(true));
$this->queries[(string)$this->index] = $this->activeQuery;
$this->index++;
$this->activeQuery = null;
}
}
/**
* @inheritdoc
*/
public function getQueries() {
return $this->queries->getData();
}
/**
* @inheritdoc
*/
public function activate() {
$this->activated = true;
}
}
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