137 lines
3.3 KiB
PHP
137 lines
3.3 KiB
PHP
<?php
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/**
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* @defgroup StatCounter StatCounter
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*
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* StatCounter is used to increment arbitrary keys for profiling reasons.
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* The key/values are persisted in several possible ways (see $wgStatsMethod).
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*/
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/**
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* Aggregator for wfIncrStats() that batches updates per request.
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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 StatCounter
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*/
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/**
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* Aggregator for wfIncrStats() that batches updates per request.
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* This avoids spamming the collector many times for the same key.
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*
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* @ingroup StatCounter
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*/
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class StatCounter {
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/** @var Array */
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protected $deltas = array(); // (key => count)
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protected function __construct() {}
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public static function singleton() {
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static $instance = null;
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if ( !$instance ) {
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$instance = new self();
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}
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return $instance;
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}
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/**
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* Increment a key by delta $count
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*
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* @param string $key
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* @param integer $count
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* @return void
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*/
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public function incr( $key, $count = 1 ) {
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if ( PHP_SAPI === 'cli' ) {
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$this->sendDelta( $key, $count );
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} else {
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if ( !isset( $this->deltas[$key] ) ) {
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$this->deltas[$key] = 0;
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}
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$this->deltas[$key] += $count;
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}
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}
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/**
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* Flush all pending deltas to persistent storage
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*
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* @return void
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*/
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public function flush() {
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try {
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foreach ( $this->deltas as $key => $count ) {
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$this->sendDelta( $key, $count );
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}
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} catch ( MWException $e ) {
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trigger_error( "Caught exception: {$e->getMessage()}");
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}
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$this->deltas = array();
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}
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/**
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* @param string $key
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* @param string $count
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* @return void
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*/
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protected function sendDelta( $key, $count ) {
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global $wgStatsMethod;
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$count = intval( $count );
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if ( $count == 0 ) {
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return;
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}
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if ( $wgStatsMethod == 'udp' ) {
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global $wgUDPProfilerHost, $wgUDPProfilerPort, $wgAggregateStatsID;
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static $socket;
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$id = $wgAggregateStatsID !== false ? $wgAggregateStatsID : wfWikiID();
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if ( !$socket ) {
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$socket = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
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$statline = "stats/{$id} - 1 1 1 1 1 -total\n";
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socket_sendto(
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$socket,
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$statline,
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strlen( $statline ),
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0,
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$wgUDPProfilerHost,
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$wgUDPProfilerPort
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);
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}
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$statline = "stats/{$id} - {$count} 1 1 1 1 {$key}\n";
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wfSuppressWarnings();
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socket_sendto(
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$socket,
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$statline,
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strlen( $statline ),
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0,
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$wgUDPProfilerHost,
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$wgUDPProfilerPort
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);
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wfRestoreWarnings();
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} elseif ( $wgStatsMethod == 'cache' ) {
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global $wgMemc;
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$key = wfMemcKey( 'stats', $key );
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if ( is_null( $wgMemc->incr( $key, $count ) ) ) {
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$wgMemc->add( $key, $count );
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}
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} else {
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// Disabled
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}
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}
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}
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