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  31  * @deprecated since 1.34 No longer maintained (T231366)
  32  */
  33 class ProfilerOutputDb extends ProfilerOutput {
  34         /** @var bool Whether to store host data with profiling calls */
  35         private $perHost = false;
  36
  37         public function __construct( Profiler $collector, array $params ) {
  38                 parent::__construct( $collector, $params );
  39                 wfDeprecated( __CLASS__, '1.34' );
  40
  41                 // Initialize per-host profiling from config, back-compat if available
  42                 if ( isset( $this->params['perHost'] ) ) {
  43                         $this->perHost = $this->params['perHost'];
  44                 }
  45         }
  46
  47         public function canUse() {
  48                 # Do not log anything if database is readonly (T7375)
  49                 return !wfReadOnly();
  50         }
  51
  52         public function log( array $stats ) {
  53                 try {
  54                         $dbw = wfGetDB( DB_MASTER );
  55                 } catch ( DBError $e ) {
  56                         return; // ignore
  57                 }
  58
  59                 $fname = __METHOD__;
  60                 $dbw->onTransactionCommitOrIdle( function () use ( $stats, $fname, $dbw ) {
  61                         $pfhost = $this->perHost ? wfHostname() : '';
  62                         // Sqlite: avoid excess b-tree rebuilds (mostly for non-WAL mode)
  63                         // non-Sqlite: lower contention with small transactions
  64                         $useTrx = ( $dbw->getType() === 'sqlite' );
  65
  66                         try {
  67                                 $useTrx ? $dbw->startAtomic( $fname ) : null;
  68
  69                                 foreach ( $stats as $data ) {
  70                                         $name = $data['name'];
  71                                         $eventCount = $data['calls'];
  72                                         $timeSum = (float)$data['real'];
  73                                         $memorySum = (float)$data['memory'];
  74                                         $name = substr( $name, 0, 255 );
  75
  76                                         // Kludge
  77                                         $timeSum = $timeSum >= 0 ? $timeSum : 0;
  78                                         $memorySum = $memorySum >= 0 ? $memorySum : 0;
  79
  80                                         $dbw->upsert( 'profiling',
  81                                                 [
  82                                                         'pf_name' => $name,
  83                                                         'pf_count' => $eventCount,
  84                                                         'pf_time' => $timeSum,
  85                                                         'pf_memory' => $memorySum,
  86                                                         'pf_server' => $pfhost
  87                                                 ],
  88                                                 [ [ 'pf_name', 'pf_server' ] ],
  89                                                 [
  90                                                         "pf_count=pf_count+{$eventCount}",
  91                                                         "pf_time=pf_time+{$timeSum}",
  92                                                         "pf_memory=pf_memory+{$memorySum}",
  93                                                 ],
  94                                                 $fname
  95                                         );
  96                                 }
  97                         } catch ( DBError $e ) {
  98                                 // ignore
  99                         }
 100
 101                         try {
 102                                 $useTrx ? $dbw->endAtomic( $fname ) : null;
 103                         } catch ( DBError $e ) {
 104                                 // ignore
 105                         }
 106                 } );
 107         }
 108 }