aa21e125a3
Xhprof generates this data now. Custom profiling of various sub-function units are kept. Calls to profiler represented about 3% of page execution time on Special:BlankPage (1.5% in/out); after this change it's down to about 0.98% of page execution time. Change-Id: Id9a1dc9d8f80bbd52e42226b724a1e1213d07af7
389 lines
12 KiB
PHP
389 lines
12 KiB
PHP
<?php
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/**
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* Contain classes to list log entries
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*
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* Copyright © 2004 Brion Vibber <brion@pobox.com>, 2008 Aaron Schulz
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* https://www.mediawiki.org/
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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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*/
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/**
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* @ingroup Pager
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*/
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class LogPager extends ReverseChronologicalPager {
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/** @var array Log types */
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private $types = array();
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/** @var string Events limited to those by performer when set */
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private $performer = '';
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/** @var string|Title Events limited to those about Title when set */
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private $title = '';
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/** @var string */
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private $pattern = '';
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/** @var string */
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private $typeCGI = '';
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/** @var LogEventsList */
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public $mLogEventsList;
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/**
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* Constructor
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*
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* @param LogEventsList $list
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* @param string|array $types Log types to show
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* @param string $performer The user who made the log entries
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* @param string|Title $title The page title the log entries are for
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* @param string $pattern Do a prefix search rather than an exact title match
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* @param array $conds Extra conditions for the query
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* @param int|bool $year The year to start from. Default: false
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* @param int|bool $month The month to start from. Default: false
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* @param string $tagFilter Tag
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*/
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public function __construct( $list, $types = array(), $performer = '', $title = '', $pattern = '',
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$conds = array(), $year = false, $month = false, $tagFilter = '' ) {
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parent::__construct( $list->getContext() );
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$this->mConds = $conds;
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$this->mLogEventsList = $list;
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$this->limitType( $types ); // also excludes hidden types
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$this->limitPerformer( $performer );
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$this->limitTitle( $title, $pattern );
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$this->getDateCond( $year, $month );
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$this->mTagFilter = $tagFilter;
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$this->mDb = wfGetDB( DB_SLAVE, 'logpager' );
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}
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public function getDefaultQuery() {
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$query = parent::getDefaultQuery();
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$query['type'] = $this->typeCGI; // arrays won't work here
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$query['user'] = $this->performer;
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$query['month'] = $this->mMonth;
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$query['year'] = $this->mYear;
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return $query;
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}
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// Call ONLY after calling $this->limitType() already!
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public function getFilterParams() {
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global $wgFilterLogTypes;
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$filters = array();
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if ( count( $this->types ) ) {
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return $filters;
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}
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foreach ( $wgFilterLogTypes as $type => $default ) {
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// Avoid silly filtering
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if ( $type !== 'patrol' || $this->getUser()->useNPPatrol() ) {
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$hide = $this->getRequest()->getInt( "hide_{$type}_log", $default );
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$filters[$type] = $hide;
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if ( $hide ) {
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$this->mConds[] = 'log_type != ' . $this->mDb->addQuotes( $type );
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}
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}
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}
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return $filters;
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}
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/**
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* Set the log reader to return only entries of the given type.
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* Type restrictions enforced here
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*
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* @param string|array $types Log types ('upload', 'delete', etc);
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* empty string means no restriction
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*/
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private function limitType( $types ) {
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global $wgLogRestrictions;
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$user = $this->getUser();
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// If $types is not an array, make it an array
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$types = ( $types === '' ) ? array() : (array)$types;
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// Don't even show header for private logs; don't recognize it...
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$needReindex = false;
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foreach ( $types as $type ) {
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if ( isset( $wgLogRestrictions[$type] )
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&& !$user->isAllowed( $wgLogRestrictions[$type] )
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) {
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$needReindex = true;
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$types = array_diff( $types, array( $type ) );
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}
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}
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if ( $needReindex ) {
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// Lots of this code makes assumptions that
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// the first entry in the array is $types[0].
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$types = array_values( $types );
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}
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$this->types = $types;
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// Don't show private logs to unprivileged users.
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// Also, only show them upon specific request to avoid suprises.
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$audience = $types ? 'user' : 'public';
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$hideLogs = LogEventsList::getExcludeClause( $this->mDb, $audience, $user );
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if ( $hideLogs !== false ) {
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$this->mConds[] = $hideLogs;
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}
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if ( count( $types ) ) {
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$this->mConds['log_type'] = $types;
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// Set typeCGI; used in url param for paging
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if ( count( $types ) == 1 ) {
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$this->typeCGI = $types[0];
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}
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}
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}
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/**
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* Set the log reader to return only entries by the given user.
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*
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* @param string $name (In)valid user name
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* @return void
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*/
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private function limitPerformer( $name ) {
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if ( $name == '' ) {
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return;
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}
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$usertitle = Title::makeTitleSafe( NS_USER, $name );
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if ( is_null( $usertitle ) ) {
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return;
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}
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/* Fetch userid at first, if known, provides awesome query plan afterwards */
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$userid = User::idFromName( $name );
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if ( !$userid ) {
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$this->mConds['log_user_text'] = IP::sanitizeIP( $name );
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} else {
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$this->mConds['log_user'] = $userid;
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}
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// Paranoia: avoid brute force searches (bug 17342)
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$user = $this->getUser();
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if ( !$user->isAllowed( 'deletedhistory' ) ) {
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$this->mConds[] = $this->mDb->bitAnd( 'log_deleted', LogPage::DELETED_USER ) . ' = 0';
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} elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
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$this->mConds[] = $this->mDb->bitAnd( 'log_deleted', LogPage::SUPPRESSED_USER ) .
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' != ' . LogPage::SUPPRESSED_USER;
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}
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$this->performer = $usertitle->getText();
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}
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/**
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* Set the log reader to return only entries affecting the given page.
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* (For the block and rights logs, this is a user page.)
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*
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* @param string|Title $page Title name
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* @param string $pattern
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* @return void
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*/
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private function limitTitle( $page, $pattern ) {
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global $wgMiserMode;
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if ( $page instanceof Title ) {
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$title = $page;
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} else {
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$title = Title::newFromText( $page );
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if ( strlen( $page ) == 0 || !$title instanceof Title ) {
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return;
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}
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}
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$this->title = $title->getPrefixedText();
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$ns = $title->getNamespace();
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$db = $this->mDb;
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$doUserRightsLogLike = false;
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if ( $this->types == array( 'rights' ) ) {
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global $wgUserrightsInterwikiDelimiter;
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$parts = explode( $wgUserrightsInterwikiDelimiter, $title->getDBKey() );
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if ( count( $parts ) == 2 ) {
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list( $name, $database ) = array_map( 'trim', $parts );
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if ( strstr( $database, '*' ) ) { // Search for wildcard in database name
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$doUserRightsLogLike = true;
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}
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}
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}
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# Using the (log_namespace, log_title, log_timestamp) index with a
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# range scan (LIKE) on the first two parts, instead of simple equality,
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# makes it unusable for sorting. Sorted retrieval using another index
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# would be possible, but then we might have to scan arbitrarily many
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# nodes of that index. Therefore, we need to avoid this if $wgMiserMode
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# is on.
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#
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# This is not a problem with simple title matches, because then we can
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# use the page_time index. That should have no more than a few hundred
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# log entries for even the busiest pages, so it can be safely scanned
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# in full to satisfy an impossible condition on user or similar.
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$this->mConds['log_namespace'] = $ns;
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if ( $doUserRightsLogLike ) {
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$params = array( $name . $wgUserrightsInterwikiDelimiter );
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foreach ( explode( '*', $database ) as $databasepart ) {
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$params[] = $databasepart;
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$params[] = $db->anyString();
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}
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array_pop( $params ); // Get rid of the last % we added.
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$this->mConds[] = 'log_title' . $db->buildLike( $params );
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} elseif ( $pattern && !$wgMiserMode ) {
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$this->mConds[] = 'log_title' . $db->buildLike( $title->getDBkey(), $db->anyString() );
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$this->pattern = $pattern;
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} else {
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$this->mConds['log_title'] = $title->getDBkey();
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}
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// Paranoia: avoid brute force searches (bug 17342)
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$user = $this->getUser();
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if ( !$user->isAllowed( 'deletedhistory' ) ) {
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$this->mConds[] = $db->bitAnd( 'log_deleted', LogPage::DELETED_ACTION ) . ' = 0';
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} elseif ( !$user->isAllowed( 'suppressrevision' ) ) {
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$this->mConds[] = $db->bitAnd( 'log_deleted', LogPage::SUPPRESSED_ACTION ) .
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' != ' . LogPage::SUPPRESSED_ACTION;
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}
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}
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/**
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* Constructs the most part of the query. Extra conditions are sprinkled in
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* all over this class.
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* @return array
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*/
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public function getQueryInfo() {
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$basic = DatabaseLogEntry::getSelectQueryData();
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$tables = $basic['tables'];
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$fields = $basic['fields'];
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$conds = $basic['conds'];
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$options = $basic['options'];
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$joins = $basic['join_conds'];
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$index = array();
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# Add log_search table if there are conditions on it.
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# This filters the results to only include log rows that have
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# log_search records with the specified ls_field and ls_value values.
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if ( array_key_exists( 'ls_field', $this->mConds ) ) {
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$tables[] = 'log_search';
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$index['log_search'] = 'ls_field_val';
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$index['logging'] = 'PRIMARY';
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if ( !$this->hasEqualsClause( 'ls_field' )
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|| !$this->hasEqualsClause( 'ls_value' )
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) {
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# Since (ls_field,ls_value,ls_logid) is unique, if the condition is
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# to match a specific (ls_field,ls_value) tuple, then there will be
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# no duplicate log rows. Otherwise, we need to remove the duplicates.
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$options[] = 'DISTINCT';
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}
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}
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if ( count( $index ) ) {
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$options['USE INDEX'] = $index;
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}
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# Don't show duplicate rows when using log_search
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$joins['log_search'] = array( 'INNER JOIN', 'ls_log_id=log_id' );
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$info = array(
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'tables' => $tables,
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'fields' => $fields,
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'conds' => array_merge( $conds, $this->mConds ),
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'options' => $options,
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'join_conds' => $joins,
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);
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# Add ChangeTags filter query
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ChangeTags::modifyDisplayQuery( $info['tables'], $info['fields'], $info['conds'],
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$info['join_conds'], $info['options'], $this->mTagFilter );
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return $info;
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}
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/**
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* Checks if $this->mConds has $field matched to a *single* value
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* @param string $field
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* @return bool
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*/
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protected function hasEqualsClause( $field ) {
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return (
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array_key_exists( $field, $this->mConds ) &&
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( !is_array( $this->mConds[$field] ) || count( $this->mConds[$field] ) == 1 )
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);
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}
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function getIndexField() {
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return 'log_timestamp';
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}
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public function getStartBody() {
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# Do a link batch query
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if ( $this->getNumRows() > 0 ) {
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$lb = new LinkBatch;
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foreach ( $this->mResult as $row ) {
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$lb->add( $row->log_namespace, $row->log_title );
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$lb->addObj( Title::makeTitleSafe( NS_USER, $row->user_name ) );
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$lb->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->user_name ) );
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$formatter = LogFormatter::newFromRow( $row );
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foreach ( $formatter->getPreloadTitles() as $title ) {
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$lb->addObj( $title );
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}
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}
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$lb->execute();
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$this->mResult->seek( 0 );
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}
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return '';
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}
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public function formatRow( $row ) {
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return $this->mLogEventsList->logLine( $row );
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}
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public function getType() {
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return $this->types;
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}
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/**
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* @return string
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*/
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public function getPerformer() {
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return $this->performer;
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}
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/**
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* @return string
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*/
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public function getPage() {
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return $this->title;
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}
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public function getPattern() {
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return $this->pattern;
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}
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public function getYear() {
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return $this->mYear;
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}
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public function getMonth() {
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return $this->mMonth;
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}
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public function getTagFilter() {
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return $this->mTagFilter;
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}
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public function doQuery() {
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// Workaround MySQL optimizer bug
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$this->mDb->setBigSelects();
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parent::doQuery();
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$this->mDb->setBigSelects( 'default' );
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}
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}
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