includes/profiler/output/ProfilerOutputUdp.php

   1 <?php
   2 /**
   3  * Profiler sending messages over UDP.
   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  * ProfilerSimpleUDP class, that sends out messages for 'udpprofile' daemon
  26  * (see http://git.wikimedia.org/tree/operations%2Fsoftware.git/master/udpprofile)
  27  *
  28  * @ingroup Profiler
  29  * @since 1.25
  30  */
  31 class ProfilerOutputUdp extends ProfilerOutput {
  32         /** @var int port to send profiling data to */
  33         private $port = 3811;
  34
  35         /** @var string host to send profiling data to */
  36         private $host = '127.0.0.1';
  37
  38         /** @var string format string for profiling data */
  39         private $format = "%s - %d %f %f %f %f %s\n";
  40
  41         public function __construct( Profiler $collector, array $params ) {
  42                 parent::__construct( $collector, $params );
  43                 global $wgUDPProfilerPort, $wgUDPProfilerHost, $wgUDPProfilerFormatString;
  44
  45                 // Initialize port, host, and format from config, back-compat if available
  46                 if ( isset( $this->params['udpport'] ) ) {
  47                         $this->port = $this->params['udpport'];
  48                 } elseif ( $wgUDPProfilerPort ) {
  49                         $this->port = $wgUDPProfilerPort;
  50                 }
  51
  52                 if ( isset( $this->params['udphost'] ) ) {
  53                         $this->host = $this->params['udphost'];
  54                 } elseif ( $wgUDPProfilerHost ) {
  55                         $this->host = $wgUDPProfilerHost;
  56                 }
  57
  58                 if ( isset( $this->params['udpformat'] ) ) {
  59                         $this->format = $this->params['udpformat'];
  60                 } elseif ( $wgUDPProfilerFormatString ) {
  61                         $this->format = $wgUDPProfilerFormatString;
  62                 }
  63         }
  64
  65         public function canUse() {
  66                 # Sockets are not enabled
  67                 return function_exists( 'socket_create' );
  68         }
  69
  70         public function log( array $stats ) {
  71                 $sock = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
  72                 $plength = 0;
  73                 $packet = "";
  74                 foreach ( $stats as $pfdata ) {
  75                         $pfline = sprintf( $this->format,
  76                                 $this->collector->getProfileID(),
  77                                 $pfdata['calls'],
  78                                 $pfdata['cpu'] / 1000, // ms => sec
  79                                 0.0, // sum of CPU^2 for each invocation (unused)
  80                                 $pfdata['real'] / 1000, // ms => sec
  81                                 0.0, // sum of real^2 for each invocation (unused)
  82                                 $pfdata['name'],
  83                                 $pfdata['memory']
  84                         );
  85                         $length = strlen( $pfline );
  86                         if ( $length + $plength > 1400 ) {
  87                                 socket_sendto( $sock, $packet, $plength, 0, $this->host, $this->port );
  88                                 $packet = "";
  89                                 $plength = 0;
  90                         }
  91                         $packet .= $pfline;
  92                         $plength += $length;
  93                 }
  94                 socket_sendto( $sock, $packet, $plength, 0x100, $this->host, $this->port );
  95         }
  96 }