416 lines
10 KiB
PHP
416 lines
10 KiB
PHP
<?php
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/**
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* Static accessor class for site_stats and related things
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*/
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class SiteStats {
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static $row, $loaded = false;
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static $admins, $jobs;
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static $pageCount = array();
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static $groupMemberCounts = array();
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static function recache() {
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self::load( true );
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}
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static function load( $recache = false ) {
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if ( self::$loaded && !$recache ) {
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return;
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}
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self::$row = self::loadAndLazyInit();
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# This code is somewhat schema-agnostic, because I'm changing it in a minor release -- TS
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if ( !isset( self::$row->ss_total_pages ) && self::$row->ss_total_pages == -1 ) {
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# Update schema
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$u = new SiteStatsUpdate( 0, 0, 0 );
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$u->doUpdate();
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$dbr = wfGetDB( DB_SLAVE );
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self::$row = $dbr->selectRow( 'site_stats', '*', false, __METHOD__ );
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}
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self::$loaded = true;
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}
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static function loadAndLazyInit() {
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wfDebug( __METHOD__ . ": reading site_stats from slave\n" );
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$row = self::doLoad( wfGetDB( DB_SLAVE ) );
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if( !self::isSane( $row ) ) {
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// Might have just been initialized during this request? Underflow?
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wfDebug( __METHOD__ . ": site_stats damaged or missing on slave\n" );
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$row = self::doLoad( wfGetDB( DB_MASTER ) );
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}
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if( !self::isSane( $row ) ) {
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// Normally the site_stats table is initialized at install time.
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// Some manual construction scenarios may leave the table empty or
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// broken, however, for instance when importing from a dump into a
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// clean schema with mwdumper.
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wfDebug( __METHOD__ . ": initializing damaged or missing site_stats\n" );
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SiteStatsInit::doAllAndCommit( false );
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$row = self::doLoad( wfGetDB( DB_MASTER ) );
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}
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if( !self::isSane( $row ) ) {
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wfDebug( __METHOD__ . ": site_stats persistently nonsensical o_O\n" );
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}
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return $row;
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}
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static function doLoad( $db ) {
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return $db->selectRow( 'site_stats', '*', false, __METHOD__ );
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}
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static function views() {
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self::load();
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return self::$row->ss_total_views;
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}
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static function edits() {
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self::load();
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return self::$row->ss_total_edits;
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}
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static function articles() {
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self::load();
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return self::$row->ss_good_articles;
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}
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static function pages() {
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self::load();
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return self::$row->ss_total_pages;
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}
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static function users() {
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self::load();
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return self::$row->ss_users;
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}
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static function activeUsers() {
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self::load();
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return self::$row->ss_active_users;
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}
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static function images() {
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self::load();
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return self::$row->ss_images;
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}
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/**
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* @deprecated Use self::numberingroup('sysop') instead
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*/
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static function admins() {
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wfDeprecated(__METHOD__);
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return self::numberingroup( 'sysop' );
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}
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/**
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* Find the number of users in a given user group.
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* @param $group String: name of group
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* @return Integer
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*/
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static function numberingroup( $group ) {
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if ( !isset( self::$groupMemberCounts[$group] ) ) {
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global $wgMemc;
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$key = wfMemcKey( 'SiteStats', 'groupcounts', $group );
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$hit = $wgMemc->get( $key );
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if ( !$hit ) {
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$dbr = wfGetDB( DB_SLAVE );
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$hit = $dbr->selectField(
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'user_groups',
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'COUNT(*)',
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array( 'ug_group' => $group ),
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__METHOD__
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);
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$wgMemc->set( $key, $hit, 3600 );
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}
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self::$groupMemberCounts[$group] = $hit;
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}
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return self::$groupMemberCounts[$group];
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}
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static function jobs() {
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if ( !isset( self::$jobs ) ) {
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$dbr = wfGetDB( DB_SLAVE );
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self::$jobs = $dbr->estimateRowCount( 'job' );
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/* Zero rows still do single row read for row that doesn't exist, but people are annoyed by that */
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if ( self::$jobs == 1 ) {
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self::$jobs = 0;
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}
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}
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return self::$jobs;
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}
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static function pagesInNs( $ns ) {
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wfProfileIn( __METHOD__ );
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if( !isset( self::$pageCount[$ns] ) ) {
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$dbr = wfGetDB( DB_SLAVE );
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$pageCount[$ns] = (int)$dbr->selectField(
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'page',
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'COUNT(*)',
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array( 'page_namespace' => $ns ),
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__METHOD__
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);
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}
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wfProfileOut( __METHOD__ );
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return $pageCount[$ns];
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}
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/** Is the provided row of site stats sane, or should it be regenerated? */
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private static function isSane( $row ) {
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if(
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$row === false
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|| $row->ss_total_pages < $row->ss_good_articles
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|| $row->ss_total_edits < $row->ss_total_pages
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) {
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return false;
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}
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// Now check for underflow/overflow
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foreach( array( 'total_views', 'total_edits', 'good_articles',
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'total_pages', 'users', 'admins', 'images' ) as $member ) {
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if(
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$row->{"ss_$member"} > 2000000000
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|| $row->{"ss_$member"} < 0
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) {
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return false;
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}
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}
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return true;
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}
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}
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/**
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*
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*/
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class SiteStatsUpdate {
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var $mViews, $mEdits, $mGood, $mPages, $mUsers;
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function __construct( $views, $edits, $good, $pages = 0, $users = 0 ) {
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$this->mViews = $views;
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$this->mEdits = $edits;
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$this->mGood = $good;
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$this->mPages = $pages;
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$this->mUsers = $users;
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}
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function appendUpdate( &$sql, $field, $delta ) {
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if ( $delta ) {
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if ( $sql ) {
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$sql .= ',';
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}
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if ( $delta < 0 ) {
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$sql .= "$field=$field-1";
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} else {
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$sql .= "$field=$field+1";
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}
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}
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}
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function doUpdate() {
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$dbw = wfGetDB( DB_MASTER );
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$updates = '';
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$this->appendUpdate( $updates, 'ss_total_views', $this->mViews );
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$this->appendUpdate( $updates, 'ss_total_edits', $this->mEdits );
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$this->appendUpdate( $updates, 'ss_good_articles', $this->mGood );
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$this->appendUpdate( $updates, 'ss_total_pages', $this->mPages );
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$this->appendUpdate( $updates, 'ss_users', $this->mUsers );
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if ( $updates ) {
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$site_stats = $dbw->tableName( 'site_stats' );
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$sql = "UPDATE $site_stats SET $updates";
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# Need a separate transaction because this a global lock
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$dbw->begin();
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$dbw->query( $sql, __METHOD__ );
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$dbw->commit();
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}
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}
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public static function cacheUpdate( $dbw ) {
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global $wgActiveUserDays;
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$dbr = wfGetDB( DB_SLAVE, array( 'SpecialStatistics', 'vslow' ) );
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# Get non-bot users than did some recent action other than making accounts.
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# If account creation is included, the number gets inflated ~20+ fold on enwiki.
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$activeUsers = $dbr->selectField(
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'recentchanges',
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'COUNT( DISTINCT rc_user_text )',
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array(
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'rc_user != 0',
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'rc_bot' => 0,
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"rc_log_type != 'newusers' OR rc_log_type IS NULL",
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"rc_timestamp >= '{$dbw->timestamp( wfTimestamp( TS_UNIX ) - $wgActiveUserDays*24*3600 )}'",
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),
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__METHOD__
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);
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$dbw->update(
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'site_stats',
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array( 'ss_active_users' => intval( $activeUsers ) ),
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array( 'ss_row_id' => 1 ),
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__METHOD__
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);
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return $activeUsers;
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}
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}
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/**
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* Class designed for counting of stats.
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*/
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class SiteStatsInit {
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// Database connection
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private $db;
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// Various stats
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private $mEdits, $mArticles, $mPages, $mUsers, $mViews, $mFiles = 0;
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/**
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* Constructor
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* @param $useMaster Boolean: whether to use the master DB
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*/
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public function __construct( $useMaster = false ) {
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$this->db = wfGetDB( $useMaster ? DB_MASTER : DB_SLAVE );
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}
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/**
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* Count the total number of edits
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* @return Integer
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*/
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public function edits() {
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$this->mEdits = $this->db->selectField( 'revision', 'COUNT(*)', '', __METHOD__ );
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$this->mEdits += $this->db->selectField( 'archive', 'COUNT(*)', '', __METHOD__ );
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return $this->mEdits;
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}
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/**
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* Count pages in article space(s)
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* @return Integer
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*/
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public function articles() {
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global $wgContentNamespaces;
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$this->mArticles = $this->db->selectField(
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'page',
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'COUNT(*)',
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array(
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'page_namespace' => $wgContentNamespaces,
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'page_is_redirect' => 0,
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'page_len > 0'
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),
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__METHOD__
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);
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return $this->mArticles;
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}
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/**
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* Count total pages
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* @return Integer
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*/
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public function pages() {
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$this->mPages = $this->db->selectField( 'page', 'COUNT(*)', '', __METHOD__ );
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return $this->mPages;
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}
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/**
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* Count total users
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* @return Integer
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*/
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public function users() {
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$this->mUsers = $this->db->selectField( 'user', 'COUNT(*)', '', __METHOD__ );
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return $this->mUsers;
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}
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/**
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* Count views
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* @return Integer
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*/
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public function views() {
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$this->mViews = $this->db->selectField( 'page', 'SUM(page_counter)', '', __METHOD__ );
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return $this->mViews;
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}
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/**
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* Count total files
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* @return Integer
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*/
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public function files() {
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$this->mFiles = $this->db->selectField( 'image', 'COUNT(*)', '', __METHOD__ );
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return $this->mFiles;
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}
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/**
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* Do all updates and commit them. More or less a replacement
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* for the original initStats, but without the calls to wfOut()
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* @param $update Boolean: whether to update the current stats or write fresh
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* @param $noViews Boolean: when true, do not update the number of page views
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* @param $activeUsers Boolean: whether to update the number of active users
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*/
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public static function doAllAndCommit( $update, $noViews = false, $activeUsers = false ) {
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// Grab the object and count everything
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$counter = new SiteStatsInit( false );
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$counter->edits();
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$counter->articles();
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$counter->pages();
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$counter->users();
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$counter->files();
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// Only do views if we don't want to not count them
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if( !$noViews ) {
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$counter->views();
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}
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// Update/refresh
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if( $update ) {
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$counter->update();
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} else {
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$counter->refresh();
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}
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// Count active users if need be
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if( $activeUsers ) {
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SiteStatsUpdate::cacheUpdate( wfGetDB( DB_MASTER ) );
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}
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}
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/**
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* Update the current row with the selected values
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*/
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public function update() {
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list( $values, $conds ) = $this->getDbParams();
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$dbw = wfGetDB( DB_MASTER );
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$dbw->update( 'site_stats', $values, $conds, __METHOD__ );
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}
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/**
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* Refresh site_stats. Erase the current record and save all
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* the new values.
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*/
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public function refresh() {
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list( $values, $conds, $views ) = $this->getDbParams();
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$dbw = wfGetDB( DB_MASTER );
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$dbw->delete( 'site_stats', $conds, __METHOD__ );
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$dbw->insert( 'site_stats', array_merge( $values, $conds, $views ), __METHOD__ );
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}
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/**
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* Return three arrays of params for the db queries
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* @return Array
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*/
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private function getDbParams() {
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$values = array(
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'ss_total_edits' => $this->mEdits,
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'ss_good_articles' => $this->mArticles,
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'ss_total_pages' => $this->mPages,
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'ss_users' => $this->mUsers,
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'ss_images' => $this->mFiles
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);
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$conds = array( 'ss_row_id' => 1 );
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$views = array( 'ss_total_views' => $this->mViews );
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return array( $values, $conds, $views );
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}
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}
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