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
  44                 // Initialize port, host, and format from config, back-compat if available
  45                 if ( isset( $this->params['udpport'] ) ) {
  46                         $this->port = $this->params['udpport'];
  47                 }
  48
  49                 if ( isset( $this->params['udphost'] ) ) {
  50                         $this->host = $this->params['udphost'];
  51                 }
  52
  53                 if ( isset( $this->params['udpformat'] ) ) {
  54                         $this->format = $this->params['udpformat'];
  55                 }
  56         }
  57
  58         public function canUse() {
  59                 # Sockets are not enabled
  60                 return function_exists( 'socket_create' );
  61         }
  62
  63         public function log( array $stats ) {
  64                 $sock = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
  65                 $plength = 0;
  66                 $packet = "";
  67                 foreach ( $stats as $pfdata ) {
  68                         $pfline = sprintf( $this->format,
  69                                 $this->collector->getProfileID(),
  70                                 $pfdata['calls'],
  71                                 $pfdata['cpu'] / 1000, // ms => sec
  72                                 0.0, // sum of CPU^2 for each invocation (unused)
  73                                 $pfdata['real'] / 1000, // ms => sec
  74                                 0.0, // sum of real^2 for each invocation (unused)
  75                                 $pfdata['name'],
  76                                 $pfdata['memory']
  77                         );
  78                         $length = strlen( $pfline );
  79                         if ( $length + $plength > 1400 ) {
  80                                 socket_sendto( $sock, $packet, $plength, 0, $this->host, $this->port );
  81                                 $packet = "";
  82                                 $plength = 0;
  83                         }
  84                         $packet .= $pfline;
  85                         $plength += $length;
  86                 }
  87                 socket_sendto( $sock, $packet, $plength, 0x100, $this->host, $this->port );
  88         }
  89 }