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 /**
  25  * Logs profiling data into the local DB
  26  *
  27  * @ingroup Profiler
  28  * @since 1.25
  29  */
  30 class ProfilerOutputDb extends ProfilerOutput {
  31         /** @var bool Whether to store host data with profiling calls */
  32         private $perHost = false;
  33
  34         public function __construct( Profiler $collector, array $params ) {
  35                 parent::__construct( $collector, $params );
  36                 global $wgProfilePerHost;
  37
  38                 // Initialize per-host profiling from config, back-compat if available
  39                 if ( isset( $this->params['perHost'] ) ) {
  40                         $this->perHost = $this->params['perHost'];
  41                 } elseif ( $wgProfilePerHost ) {
  42                         $this->perHost = $wgProfilePerHost;
  43                 }
  44         }
  45
  46         public function canUse() {
  47                 # Do not log anything if database is readonly (bug 5375)
  48                 return !wfReadOnly();
  49         }
  50
  51         public function log( array $stats ) {
  52                 $pfhost = $this->perHost ? wfHostname() : '';
  53
  54                 try {
  55                         $dbw = wfGetDB( DB_MASTER );
  56                         $useTrx = ( $dbw->getType() === 'sqlite' ); // much faster
  57                         if ( $useTrx ) {
  58                                 $dbw->startAtomic( __METHOD__ );
  59                         }
  60                         foreach ( $stats as $data ) {
  61                                 $name = $data['name'];
  62                                 $eventCount = $data['calls'];
  63                                 $timeSum = (float)$data['real'];
  64                                 $memorySum = (float)$data['memory'];
  65                                 $name = substr( $name, 0, 255 );
  66
  67                                 // Kludge
  68                                 $timeSum = $timeSum >= 0 ? $timeSum : 0;
  69                                 $memorySum = $memorySum >= 0 ? $memorySum : 0;
  70
  71                                 $dbw->upsert( 'profiling',
  72                                         array(
  73                                                 'pf_name' => $name,
  74                                                 'pf_count' => $eventCount,
  75                                                 'pf_time' => $timeSum,
  76                                                 'pf_memory' => $memorySum,
  77                                                 'pf_server' => $pfhost
  78                                         ),
  79                                         array( array( 'pf_name', 'pf_server' ) ),
  80                                         array(
  81                                                 "pf_count=pf_count+{$eventCount}",
  82                                                 "pf_time=pf_time+{$timeSum}",
  83                                                 "pf_memory=pf_memory+{$memorySum}",
  84                                         ),
  85                                         __METHOD__
  86                                 );
  87                         }
  88                         if ( $useTrx ) {
  89                                 $dbw->endAtomic( __METHOD__ );
  90                         }
  91                 } catch ( DBError $e ) {
  92                 }
  93         }
  94 }