includes/profiler/output/ProfilerOutputDb.php

   1 <?php
   2 /**
   3  * Profiler storing information in the DB.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Profiler
  22  */
  23
  24 use Wikimedia\Rdbms\DBError;
  25
  26 /**
  27  * Logs profiling data into the local DB
  28  *
  29  * @ingroup Profiler
  30  * @since 1.25
  31  */
  32 class ProfilerOutputDb extends ProfilerOutput {
  33         /** @var bool Whether to store host data with profiling calls */
  34         private $perHost = false;
  35
  36         public function __construct( Profiler $collector, array $params ) {
  37                 parent::__construct( $collector, $params );
  38
  39                 // Initialize per-host profiling from config, back-compat if available
  40                 if ( isset( $this->params['perHost'] ) ) {
  41                         $this->perHost = $this->params['perHost'];
  42                 }
  43         }
  44
  45         public function canUse() {
  46                 # Do not log anything if database is readonly (T7375)
  47                 return !wfReadOnly();
  48         }
  49
  50         public function log( array $stats ) {
  51                 $pfhost = $this->perHost ? wfHostname() : '';
  52
  53                 try {
  54                         $dbw = wfGetDB( DB_MASTER );
  55                         $useTrx = ( $dbw->getType() === 'sqlite' ); // much faster
  56                         if ( $useTrx ) {
  57                                 $dbw->startAtomic( __METHOD__ );
  58                         }
  59                         foreach ( $stats as $data ) {
  60                                 $name = $data['name'];
  61                                 $eventCount = $data['calls'];
  62                                 $timeSum = (float)$data['real'];
  63                                 $memorySum = (float)$data['memory'];
  64                                 $name = substr( $name, 0, 255 );
  65
  66                                 // Kludge
  67                                 $timeSum = $timeSum >= 0 ? $timeSum : 0;
  68                                 $memorySum = $memorySum >= 0 ? $memorySum : 0;
  69
  70                                 $dbw->upsert( 'profiling',
  71                                         [
  72                                                 'pf_name' => $name,
  73                                                 'pf_count' => $eventCount,
  74                                                 'pf_time' => $timeSum,
  75                                                 'pf_memory' => $memorySum,
  76                                                 'pf_server' => $pfhost
  77                                         ],
  78                                         [ [ 'pf_name', 'pf_server' ] ],
  79                                         [
  80                                                 "pf_count=pf_count+{$eventCount}",
  81                                                 "pf_time=pf_time+{$timeSum}",
  82                                                 "pf_memory=pf_memory+{$memorySum}",
  83                                         ],
  84                                         __METHOD__
  85                                 );
  86                         }
  87                         if ( $useTrx ) {
  88                                 $dbw->endAtomic( __METHOD__ );
  89                         }
  90                 } catch ( DBError $e ) {
  91                 }
  92         }
  93 }