2bad0b9664
The format of datagrams generated by StatCounter and ProfilerSimpleUDP is not described by any standard and appears to have been designed for compatibility with the logging setup of the Wikimedia Foundation, which limits reusability. This patch adds two configuration variables, $wgUDPProfilerFormatString and $wgStatsFormatString, that can be used to specify the precise format that MediaWiki will use. The default values for these variables causes MediaWiki to generate the same output as before. The secret evil plan is to change the defaults so that MediaWiki emits metrics that are compatible with the popular StatsD format (see <https://github.com/b/statsd_spec>). This would allow us to replace udpprofiler with a generic StatsD instance instead. Change-Id: Iaf00811d3f8d6b89c1c68e84fc1f2c93425d5a2d
74 lines
2.3 KiB
PHP
74 lines
2.3 KiB
PHP
<?php
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/**
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* Profiler sending messages over UDP.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Profiler
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*/
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/**
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* ProfilerSimpleUDP class, that sends out messages for 'udpprofile' daemon
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* (the one from mediawiki/trunk/udpprofile SVN )
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* @ingroup Profiler
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*/
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class ProfilerSimpleUDP extends ProfilerSimple {
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public function isPersistent() {
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return true;
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}
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public function logData() {
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global $wgUDPProfilerHost, $wgUDPProfilerPort, $wgUDPProfilerFormatString;
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$this->close();
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if ( isset( $this->mCollated['-total'] ) && $this->mCollated['-total']['real'] < $this->mMinimumTime ) {
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# Less than minimum, ignore
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return;
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}
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if ( !function_exists( 'socket_create' ) ) {
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# Sockets are not enabled
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return;
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}
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$sock = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
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$plength = 0;
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$packet = "";
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foreach ( $this->mCollated as $entry => $pfdata ) {
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if ( !isset( $pfdata['count'] )
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|| !isset( $pfdata['cpu'] )
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|| !isset( $pfdata['cpu_sq'] )
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|| !isset( $pfdata['real'] )
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|| !isset( $pfdata['real_sq'] ) ) {
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continue;
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}
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$pfline = sprintf( $wgUDPProfilerFormatString, $this->getProfileID(), $pfdata['count'],
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$pfdata['cpu'], $pfdata['cpu_sq'], $pfdata['real'], $pfdata['real_sq'], $entry );
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$length = strlen( $pfline );
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/* printf("<!-- $pfline -->"); */
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if ( $length + $plength > 1400 ) {
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socket_sendto( $sock, $packet, $plength, 0, $wgUDPProfilerHost, $wgUDPProfilerPort );
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$packet = "";
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$plength = 0;
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}
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$packet .= $pfline;
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$plength += $length;
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}
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socket_sendto( $sock, $packet, $plength, 0x100, $wgUDPProfilerHost, $wgUDPProfilerPort );
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}
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}
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