gnu-social/plugins/SQLStats/SQLStatsPlugin.php
Alexei Sorokin 3951ccbef7 [CORE] Use monotonic time via hrtime() where applicable
The realtime clock is not reliable when calculating elapsed time.
2021-07-16 19:44:36 +01:00

97 lines
3.1 KiB
PHP

<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU social 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
/*
* Check DB queries for filesorts and such and log em.
*
* @package SQLStatsPlugin
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
/**
* Check DB queries for filesorts and such and log em.
*
* @package SQLStatsPlugin
* @author Evan Prodromou <evan@status.net>
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class SQLStatsPlugin extends Plugin
{
const PLUGIN_VERSION = '2.0.0';
protected $queryCount = 0;
protected $queryStart = 0;
protected $queryTimes = array();
protected $queries = array();
public function onPluginVersion(array &$versions): bool
{
$versions[] = array('name' => 'SQLStats',
'version' => self::PLUGIN_VERSION,
'author' => 'Evan Prodromou',
'homepage' => GNUSOCIAL_ENGINE_REPO_URL . 'tree/master/plugins/SQLStats',
'rawdescription' =>
// TRANS: Plugin decription.
_m('Debug tool to watch for poorly indexed DB queries.'));
return true;
}
public function onStartDBQuery($obj, $query, &$result)
{
$this->queryStart = hrtime(true);
return true;
}
public function onEndDBQuery($obj, $query, &$result)
{
$endTime = hrtime(true);
$this->queryTimes[] = round(($endTime - $this->queryStart) / 1000000);
$this->queries[] = trim(preg_replace('/\s/', ' ', $query));
$this->queryStart = 0;
return true;
}
public function cleanup()
{
if (count($this->queryTimes) == 0) {
$this->log(LOG_INFO, sprintf('0 queries this hit.'));
} else {
$this->log(LOG_INFO, sprintf(
'%d queries this hit (total = %d, avg = %d, max = %d, min = %d)',
count($this->queryTimes),
array_sum($this->queryTimes),
array_sum($this->queryTimes) / count($this->queryTimes),
max($this->queryTimes),
min($this->queryTimes)
));
}
$verbose = common_config('sqlstats', 'verbose');
if ($verbose) {
foreach ($this->queries as $query) {
$this->log(LOG_INFO, $query);
}
}
}
}