jenkins-bot has submitted this change and it was merged.

Change subject: New HitCounters extension.
......................................................................


New HitCounters extension.

Tested and ready for usage.  Report any problems ASAP.
Includes the hitcounters in the footer of the page.

Change-Id: I458ad4a944676462887986b7e34977bf1119bde3
Bug: T74420
---
A .gitignore
A COPYING
A HCUpdater.php
A HitCounters.body.php
A HitCounters.i18n.magic.php
A HitCounters.php
A Hooks.php
A README.mediawiki
A SpecialPopularPages.php
A ViewCountUpdate.php
A drop_field.sql
A extension.json
A hit_counter_extension.sql
A i18n/en.json
A i18n/qqq.json
A initial_count.sql
A page_counter.sql
A rename_table.sql
A update.php
19 files changed, 1,407 insertions(+), 0 deletions(-)

Approvals:
  Paladox: Looks good to me, but someone else must approve
  MarkAHershberger: Looks good to me, approved
  jenkins-bot: Verified



diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..54e43cb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+*~
+.#*
+\#*#
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..94a9ed0
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/HCUpdater.php b/HCUpdater.php
new file mode 100644
index 0000000..331f2fa
--- /dev/null
+++ b/HCUpdater.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace HitCounters;
+
+use DatabaseUpdater;
+use Installer;
+use MWException;
+
+/* hack to get at protected member */
+class HCUpdater extends DatabaseUpdater {
+       public static function getDBUpdates ( DatabaseUpdater $updater ) {
+               /* This is an ugly abuse to rename a table. */
+               $updater->modifyExtensionField( 'hitcounter',
+                       'hc_id',
+                       __DIR__ . '/rename_table.sql' );
+               $updater->addExtensionTable( 'hit_counter_extension',
+                       __DIR__ . '/hit_counter_extension.sql', true );
+               $updater->addExtensionTable( 'hit_counter',
+                       __DIR__ . '/page_counter.sql', true );
+               $updater->dropExtensionField( 'page', 'page_counter',
+                       __DIR__ . '/drop_field.sql' );
+       }
+
+       public function clearExtensionUpdates() {
+               $this->extensionUpdates = array();
+       }
+
+       public function getCoreUpdateList() {
+               $updater = DatabaseUpdater::newForDb( $this->db, $this->shared, 
$this->maintenance );
+               return $updater->getCoreUpdateList();
+       }
+
+       /**
+        * Maybe we could just not set $shared's default?
+        *
+        * @SuppressWarnings(BooleanArgumentFlag)
+        */
+       public static function newForDB( &$dbconn, $shared = false, 
$maintenance = null ) {
+               $type = $dbconn->getType();
+               if ( in_array( $type, Installer::getDBTypes() ) ) {
+                       return new self( $dbconn, $shared, $maintenance );
+               } else {
+                       throw new MWException( __METHOD__ . ' called for 
unsupported $wgDBtype' );
+               }
+       }
+
+}
diff --git a/HitCounters.body.php b/HitCounters.body.php
new file mode 100644
index 0000000..1c67b98
--- /dev/null
+++ b/HitCounters.body.php
@@ -0,0 +1,101 @@
+<?php
+
+namespace HitCounters;
+
+use Title;
+use Parser;
+use PPFrame;
+use MWNamespace;
+use MWException;
+
+class HitCounters {
+       protected static $mViews;
+
+       /**
+        * @return int The view count for the page
+        */
+       public static function getCount( Title $title ) {
+               if ( $title === null ) {
+                       throw new MWException( "Asked for count without a 
title!" );
+               }
+               if ( $title->isSpecialPage() ) {
+                       return null;
+               }
+
+               /*
+                * Use the cache to avoid hitting the DB if available since
+                * page views are pretty common and this is a tiny bit of
+                * information.
+                */
+               $cache = wfGetCache( CACHE_ANYTHING );
+               $key = wfMemcKey( 'viewcount', $title->getDBkey() );
+               $views = $cache->get( $key );
+               if ( !$views ) {
+                       $dbr = wfGetDB( DB_SLAVE );
+                       $row = $dbr->select(
+                               array( 'hit_counter' ),
+                               array( 'hits' => 'page_counter' ),
+                               array( 'page_id' => $title->getArticleID() ),
+                               __METHOD__ );
+
+                       if ( $row !== false && $current = $row->current() ) {
+                               $views = $current->hits;
+                               /* update only once a day */
+                               $cache->set( $key, $views, 24 * 3600 );
+                       }
+               }
+
+               return $views;
+       }
+
+       public static function views() {
+               # Should check for MiserMode here
+               $cache = wfGetCache( CACHE_ANYTHING );
+               $key = wfMemcKey( 'sitestats', 'activeusers-updated' );
+               // Re-calculate the count if the last tally is old...
+               if ( !self::$mViews ) {
+                       self::$mViews = $cache->get( $key );
+                       wfDebugLog( "HitCounters", __METHOD__ . ": got " . 
var_export( self::$mViews, true ) .
+                               " from cache." );
+                       if ( !self::$mViews ) {
+                               $dbr = wfGetDB( DB_SLAVE );
+                               self::$mViews = $dbr->selectField( 
'hit_counter', 'SUM(page_counter)', '',
+                                       __METHOD__ );
+                               wfDebugLog( "HitCounters", __METHOD__ . ": got 
" . var_export( self::$mViews, true ) .
+                                       " from select." );
+                               $cache->set( $key, self::$mViews, 24 * 3600 ); 
// don't update for 1 day
+                       }
+               }
+               return self::$mViews;
+       }
+
+       /**
+        * We can't choose our parameters since this is a hook and we
+        * don't really need to use the $parser and $cache parameters.
+        *
+        * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+        */
+       public static function numberOfViews( Parser &$parser, PPFrame $frame, 
$args ) {
+               return self::getCount( $frame->title );
+       }
+
+       public static function getQueryInfo() {
+               global $wgDBprefix;
+
+               return array(
+                       'tables' => array( 'page', 'hit_counter' ),
+                       'fields' => array(
+                               'namespace' => 'page_namespace',
+                               'title' => 'page_title',
+                               'value' => 'page_counter' ),
+                       'conds' => array(
+                               'page_is_redirect' => 0,
+                               'page_namespace' => 
MWNamespace::getContentNamespaces(),
+                       ),
+                       'join_conds' => array(
+                               'page' => array( 'INNER JOIN', $wgDBprefix . 
'page.page_id = ' . $wgDBprefix .
+                                       'hit_counter.page_id' )
+                       )
+               );
+       }
+}
diff --git a/HitCounters.i18n.magic.php b/HitCounters.i18n.magic.php
new file mode 100644
index 0000000..17270af
--- /dev/null
+++ b/HitCounters.i18n.magic.php
@@ -0,0 +1,16 @@
+<?php
+/**
+ * Internationalization file for magic words.
+ */
+
+$magicWords = array();
+$specialPageAliases = array();
+
+/** English (English) */
+$magicWords['en'] = array(
+       'numberofviews' => array( 0, 'NUMBEROFVIEWS' ),
+);
+
+$specialPageAliases['en'] = array(
+       'PopularPages' => array( 'Popularpages', 'PopularPages' ),
+);
diff --git a/HitCounters.php b/HitCounters.php
new file mode 100644
index 0000000..501a46e
--- /dev/null
+++ b/HitCounters.php
@@ -0,0 +1,53 @@
+<?php
+/**
+ * An extension for providing basic hit counter information for
+ * Mediawiki after version 1.24
+ *
+ * PHP Version 5
+ *
+ * @category  Extension
+ * @package   HitCounters
+ * @author    Mark A. Hershberger <m...@nichework.com>
+ * @copyright 2015 Mark A. Hershberger
+ * @license   http://www.gnu.org/licenses/gpl-3.0.html GNU General Public 
License, version 3
+ *            (or later)
+ * @version   GIT: 0.1
+ * @link      https://www.mediawiki.org/wiki/Extension:HitCounters
+ */
+
+/**
+ * The main file of the HitCounters extension
+ *
+ * This file is part of the MediaWiki extension HitCounters.
+ * The HitCounters extension is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * The HitCounters extension is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @file
+ */
+
+call_user_func(
+       function () {
+               if ( function_exists( 'wfLoadExtension' ) ) {
+                       wfLoadExtension( 'HitCounters' );
+                       wfWarn(
+                          'Deprecated PHP entry point used for HitCounters 
extension. ' .
+                          'Please use wfLoadExtension instead, ' .
+                          'see 
https://www.mediawiki.org/wiki/Extension_registration ' .
+                          'for more details.'
+                       );
+                       return;
+               } else {
+                       die( 'This extension requires MediaWiki 1.25+' );
+               }
+       }
+);
diff --git a/Hooks.php b/Hooks.php
new file mode 100644
index 0000000..7d9b1f7
--- /dev/null
+++ b/Hooks.php
@@ -0,0 +1,128 @@
+<?php
+namespace HitCounters;
+
+use DatabaseUpdater;
+use RequestContext;
+use Title;
+use Parser;
+use DeferredUpdates;
+use CoreParserFunctions;
+use ViewCountUpdate;
+use SiteStatsUpdate;
+use SiteStats;
+use SkinTemplate;
+use QuickTemplate;
+use PPFrame;
+use WikiPage;
+use User;
+
+/**
+ * PHPMD will warn us about these things here but since they're hooks,
+ * we really don't have much choice.
+ *
+ * @SuppressWarnings(PHPMD.CamelCaseMethodName)
+ * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
+ */
+class Hooks {
+       public static function onSpecialPage_initList( array &$specialPages ) {
+               $specialPages['PopularPages'] = 
'HitCounters\SpecialPopularPages';
+       }
+
+       public static function onLoadExtensionSchemaUpdates( DatabaseUpdater 
$updater ) {
+               HCUpdater::getDBUpdates( $updater );
+       }
+
+       public static function onSpecialStatsAddExtra( array &$extraStats, 
RequestContext $statsPage ) {
+               $totalViews = HitCounters::views();
+               
$extraStats['statistics-header-views']['statistics-views-total'] = $totalViews;
+               
$extraStats['statistics-header-views']['statistics-views-peredit'] =
+                       $totalViews / SiteStats::edits();
+               $extraStats['statistics-mostpopular'] = 
self::getMostViewedPages( $statsPage );
+               return true;
+       }
+
+       protected static function getMostViewedPages( RequestContext $statsPage 
) {
+               $dbr = wfGetDB( DB_SLAVE );
+               $param = HitCounters::getQueryInfo();
+               $options['ORDER BY'] = array( 'page_counter DESC' );
+               $options['LIMIT'] = 10;
+               $res = $dbr->select( $param['tables'], $param['fields'], 
array(), __METHOD__,
+                       $options, $param['join_conds'] );
+
+               $ret = array();
+               if ( $res->numRows() > 0 ) {
+                       foreach ( $res as $row ) {
+                               $title = Title::makeTitleSafe( $row->namespace, 
$row->title );
+
+                               if ( $title instanceof Title ) {
+                                       $ret[ $title->getPrefixedText() 
]['number'] = $row->value;
+                                       $ret[ $title->getPrefixedText() 
]['name'] =
+                                               $statsPage->msg( 
'hitcounter-page-label',
+                                                       $title->getText() 
)->title( $statsPage->getTitle() );
+                               }
+                       }
+                       $res->free();
+               }
+               return $ret;
+       }
+
+       public static function onMagicWordwgVariableIDs( array &$variableIDs ) {
+               $variableIDs[] = 'numberofviews';
+       }
+
+       public static function onParserFirstCallInit( Parser $parser ) {
+               $parser->setFunctionHook( 'numberofviews', 
'HitCounters:numberOfViews',
+                       Parser::SFH_OBJECT_ARGS );
+               return true;
+       }
+
+       public static function onParserGetVariableValueSwitch( Parser &$parser,
+               array $cache, &$magicWordId, &$ret, PPFrame &$frame ) {
+               global $wgDisableCounters;
+
+               if ( !$wgDisableCounters && $magicWordId === 'numberofviews' ) {
+                       $ret = CoreParserFunctions::formatRaw(
+                               HitCounters::numberOfViews( $parser, $frame, 
null ), null );
+               } elseif ( $wgDisableCounters && $magicWordId === 
'numberofviews' ) {
+                       wfDebugLog( 'HitCounters', 'Counters are disabled!' );
+               }
+               return true;
+       }
+
+       public static function onPageViewUpdates( WikiPage $wikipage, User 
$user ) {
+               global $wgDisableCounters;
+
+               // Don't update page view counters on views from bot users (bug 
14044)
+               if ( !$wgDisableCounters && !$user->isAllowed( 'bot' ) && 
$wikipage->exists() ) {
+                       DeferredUpdates::addUpdate( new ViewCountUpdate( 
$wikipage->getId() ) );
+                       DeferredUpdates::addUpdate( new SiteStatsUpdate( 1, 0, 
0 ) );
+               }
+       }
+
+       public static function onSkinTemplateOutputPageBeforeExec( SkinTemplate 
&$skin,
+                                                                               
                                           QuickTemplate &$tpl) {
+               global $wgDisableCounters;
+
+               /* Without this check two lines are added to the page. */
+               static $called = false;
+               if ( $called ) {
+                       return;
+               }
+               $called = true;
+
+               if ( !$wgDisableCounters ) {
+                       $footer = $tpl->get( 'footerlinks' );
+                       if ( isset( $footer['info'] ) && is_array( 
$footer['info'] ) ) {
+                               // 'viewcount' goes after 'lastmod', we'll just 
assume 'viewcount' is the 0th item
+                               array_splice( $footer['info'], 1, 0, 
'viewcount' );
+                               $tpl->set( 'footerlinks', $footer );
+                       }
+
+                       $viewcount = HitCounters::getCount( $skin->getTitle());
+                       if ( $viewcount ) {
+                               $tpl->set( 'viewcount', $skin->msg( 'viewcount' 
)->numParams( $viewcount )->parse() );
+                       }
+               }
+       }
+}
diff --git a/README.mediawiki b/README.mediawiki
new file mode 100644
index 0000000..61337bb
--- /dev/null
+++ b/README.mediawiki
@@ -0,0 +1,18 @@
+== HitCounters ==
+
+In [https://gerrit.wikimedia.org/r/150699/ MediaWiki 1.25], hit counters
+have been removed.  The reason is given in the commit message:
+
+: The hitcounter implementation in MediaWiki is flawed
+: and needs removal. For proper metrics, it is suggested to use
+: something like Piwik or Google Analytics.
+
+More discussion can be found at
+https://www.mediawiki.org/wiki/RFC/Removing_hit_counters_from_MediaWiki_core
+
+If you wish to continue using the HitCounter's despite the flawed
+implementation, this extension should help.
+
+Note that some steps will be needed to maintain you current hit
+count.  When those steps are understood, they'll be documented.
+
diff --git a/SpecialPopularPages.php b/SpecialPopularPages.php
new file mode 100644
index 0000000..95524a5
--- /dev/null
+++ b/SpecialPopularPages.php
@@ -0,0 +1,93 @@
+<?php
+/**
+ * Implements Special:PopularPages
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup SpecialPage
+ */
+
+/**
+ * A special page that list most viewed pages
+ *
+ * @ingroup SpecialPage
+ */
+
+namespace HitCounters;
+
+use HitCounters\HitCounters;
+use QueryPage;
+use Title;
+use Linker;
+
+class SpecialPopularPages extends QueryPage {
+       public function __construct( $name = 'PopularPages' ) {
+               parent::__construct( $name );
+       }
+
+       public function isExpensive() {
+               # page_counter is not indexed
+               # Is there a reason not to index it now?
+               return true;
+       }
+
+       public function isSyndicated() {
+               return false;
+       }
+
+       public function getQueryInfo() {
+               return HitCounters::getQueryInfo();
+       }
+
+       /**
+        * @param Skin $skin
+        * @param object $result Result row
+        * @return string
+        *
+        * Suppressed because we can't choose the params
+        * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+        */
+       public function formatResult( $skin, $result ) {
+               global $wgContLang;
+
+               $title = Title::makeTitleSafe( $result->namespace, 
$result->title );
+               if ( !$title ) {
+                       return Html::element(
+                               'span',
+                               array( 'class' => 'mw-invalidtitle' ),
+                               Linker::getInvalidTitleDescription(
+                                       $this->getContext(),
+                                       $result->namespace,
+                                       $result->title )
+                       );
+               }
+
+               $link = Linker::linkKnown(
+                       $title,
+                       htmlspecialchars( $wgContLang->convert( 
$title->getPrefixedText() ) )
+               );
+
+               return $this->getLanguage()->specialList(
+                       $link,
+                       $this->msg( 'nviews' )->numParams( $result->value 
)->escaped()
+               );
+       }
+
+       protected function getGroupName() {
+               return 'wiki';
+       }
+}
diff --git a/ViewCountUpdate.php b/ViewCountUpdate.php
new file mode 100644
index 0000000..082c291
--- /dev/null
+++ b/ViewCountUpdate.php
@@ -0,0 +1,121 @@
+<?php
+/**
+ * Update for the 'page_counter' field
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+/**
+ * Update for the 'page_counter' field, when $wgDisableCounters is false.
+ *
+ * Depending on $wgHitcounterUpdateFreq, this will directly increment the
+ * 'page_counter' field or use the 'hitcounter' table and then collect the data
+ * from that table to update the 'page_counter' field in a batch operation.
+ */
+class ViewCountUpdate implements DeferrableUpdate {
+       /** @var int Page ID to increment the view count */
+       protected $pageId;
+
+       /**
+        * Constructor
+        *
+        * @param int $pageId Page ID to increment the view count
+        */
+       public function __construct( $pageId ) {
+               $this->pageId = intval( $pageId );
+       }
+
+       /**
+        * Run the update
+        */
+       public function doUpdate() {
+               global $wgHitcounterUpdateFreq;
+               $dbw = wfGetDB( DB_MASTER );
+
+               if ( $wgHitcounterUpdateFreq <= 1 || $dbw->getType() == 
'sqlite' ) {
+                       $pageId = $this->pageId;
+                       $method = __METHOD__;
+                       $dbw->onTransactionIdle( function () use ( $dbw, 
$pageId, $method ) {
+                               try {
+                                       $dbw->update( 'hit_counter',
+                                               array( 'page_counter = 
page_counter + 1' ),
+                                               array( 'page_id' => $pageId ),
+                                               $method
+                                       );
+                               } catch ( DBError $e ) {
+                                       MWExceptionHandler::logException( $e );
+                               }
+                       } );
+                       return;
+               }
+
+               # Not important enough to warrant an error page in case of 
failure
+               try {
+                       // Since `hit_counter_extension` is non-transactional, 
the
+                       // contention is minimal
+                       $dbw->insert( 'hit_counter_extension', array( 'hc_id' 
=> $this->pageId ),
+                               __METHOD__ );
+                       $checkfreq = intval( $wgHitcounterUpdateFreq / 25 + 1 );
+                       if ( rand() % $checkfreq == 0 && $dbw->lastErrno() == 0 
) {
+                               $this->collect();
+                       }
+               } catch ( DBError $e ) {
+                       error_log("exception during insert update: " . 
$e->getMessage() );
+                       MWExceptionHandler::logException( $e );
+               }
+       }
+
+       protected function collect() {
+               global $wgHitcounterUpdateFreq;
+
+               $dbw = wfGetDB( DB_MASTER );
+
+               $dbType = $dbw->getType();
+               $tabletype = $dbType == 'mysql' ? "ENGINE=HEAP " : '';
+               $hitcounterTable = $dbw->tableName( 'hit_counter_extension' );
+               $acchitsTable = $dbw->tableName( 'acchits' );
+               $pageTable = $dbw->tableName( 'hit_counter' );
+               $rown = $dbw->selectField( $hitcounterTable, 'COUNT(*)', 
array(), __METHOD__ );
+               if ( $rown < $wgHitcounterUpdateFreq ) {
+                       return;
+               }
+
+               wfProfileIn( __METHOD__ . '-collect' );
+               $oldUserAbort = ignore_user_abort( true );
+
+               $dbw->lockTables( array(), array( $hitcounterTable ), 
__METHOD__, false );
+               $dbw->query( "CREATE TEMPORARY TABLE $acchitsTable $tabletype 
AS " .
+                       "SELECT hc_id,COUNT(*) AS hc_n FROM $hitcounterTable " .
+                       'GROUP BY hc_id', __METHOD__ );
+               $dbw->delete( $hitcounterTable, '*', __METHOD__ );
+               $dbw->unlockTables( __METHOD__ );
+
+               if ( $dbType == 'mysql' ) {
+                       $dbw->query( "UPDATE $pageTable,$acchitsTable " .
+                               'SET page_counter=page_counter + hc_n ' .
+                               'WHERE page_id = hc_id', __METHOD__ );
+               } else {
+                       $dbw->query( "UPDATE $pageTable SET 
page_counter=page_counter + hc_n " .
+                               "FROM $acchitsTable WHERE page_id = hc_id", 
__METHOD__ );
+               }
+               $dbw->query( "DROP TABLE $acchitsTable", __METHOD__ );
+
+               ignore_user_abort( $oldUserAbort );
+               wfProfileOut( __METHOD__ . '-collect' );
+       }
+}
diff --git a/drop_field.sql b/drop_field.sql
new file mode 100644
index 0000000..0def052
--- /dev/null
+++ b/drop_field.sql
@@ -0,0 +1,3 @@
+INSERT INTO /*$wgDBprefix*/hit_counter (page_id, page_counter)
+       SELECT /*$wgDBprefix*/page.page_id, /*$wgDBprefix*/page.page_counter 
FROM /*$wgDBprefix*/page;
+ALTER TABLE /*$wgDBprefix*/page DROP page_counter;
diff --git a/extension.json b/extension.json
new file mode 100644
index 0000000..ee202c1
--- /dev/null
+++ b/extension.json
@@ -0,0 +1,58 @@
+{
+       "name": "HitCounters",
+       "namemsg": "hitcounter-name",
+       "version": "0.1",
+       "author": [
+               "[//mwstake.org Mark A. Hershberger]"
+       ],
+       "url": "https://www.mediawiki.org/wiki/Extension:HitCounters";,
+       "descriptionmsg": "hitcounter-desc",
+       "type": "variable",
+       "license-name": "GPL-3.0+",
+       "MessagesDirs": {
+               "HitCounters": [
+                       "i18n"
+               ]
+       },
+       "ExtensionMessagesFiles": {
+               "HitCountersMagic": "HitCounters.i18n.magic.php"
+       },
+       "Hooks": {
+               "SpecialPage_initList": [
+                       "HitCounters\\Hooks::onSpecialPage_initList"
+               ],
+               "SpecialStatsAddExtra": [
+                       "HitCounters\\Hooks::onSpecialStatsAddExtra"
+               ],
+               "LoadExtensionSchemaUpdates": [
+                       "HitCounters\\Hooks::onLoadExtensionSchemaUpdates"
+               ],
+               "MagicWordwgVariableIDs": [
+                       "HitCounters\\Hooks::onMagicWordwgVariableIDs"
+               ],
+               "ParserGetVariableValueSwitch": [
+                       "HitCounters\\Hooks::onParserGetVariableValueSwitch"
+               ],
+               "ParserFirstCallInit": [
+                       "HitCounters\\Hooks::onParserFirstCallInit"
+               ],
+               "PageViewUpdates": [
+                       "HitCounters\\Hooks::onPageViewUpdates"
+               ],
+               "SkinTemplateOutputPageBeforeExec": [
+                       "HitCounters\\Hooks::onSkinTemplateOutputPageBeforeExec"
+               ]
+       },
+       "AutoloadClasses": {
+               "HitCounters\\Hooks": "Hooks.php",
+               "HitCounters\\HitCounters": "HitCounters.body.php",
+               "ViewCountUpdate": "ViewCountUpdate.php",
+               "HitCounters\\SpecialPopularPages": "SpecialPopularPages.php",
+               "HitCounters\\HCUpdater": "HCUpdater.php"
+       },
+       "config": {
+               "HitcounterUpdateFreq": 1,
+               "DisableCounters": false
+       },
+       "manifest_version": 1
+}
diff --git a/hit_counter_extension.sql b/hit_counter_extension.sql
new file mode 100644
index 0000000..af7fae2
--- /dev/null
+++ b/hit_counter_extension.sql
@@ -0,0 +1,3 @@
+CREATE TABLE /*$wgDBprefix*/hit_counter_extension (
+  `hc_id` int(10) unsigned NOT NULL
+) ENGINE=MEMORY DEFAULT CHARSET=utf8 MAX_ROWS=25000;
diff --git a/i18n/en.json b/i18n/en.json
new file mode 100644
index 0000000..8ad3eb5
--- /dev/null
+++ b/i18n/en.json
@@ -0,0 +1,19 @@
+{
+       "@metadata": {
+               "authors": [
+                       "Mark A. Hershberger"
+               ]
+       },
+       "nviews": "$1 {{PLURAL:$1|view|views}}",
+       "statistics-header-views": "View statistics",
+       "statistics-views-total": "Views total",
+       "statistics-views-total-desc": "Views to non-existing pages and special 
pages are not included",
+       "statistics-views-peredit": "Views per edit",
+       "statistics-mostpopular": "Most viewed pages",
+       "popularpages": "Popular pages",
+       "popularpages-summary": "",
+       "pageinfo-views": "Number of views",
+       "hitcounter-name": "Hit Counter",
+       "hitcounter-page-label": "[[$1|$1]]",
+       "hitcounter-desc": "An extension to provide the page views 
functionality that was removed in MediaWiki 1.25"
+}
diff --git a/i18n/qqq.json b/i18n/qqq.json
new file mode 100644
index 0000000..af83d57
--- /dev/null
+++ b/i18n/qqq.json
@@ -0,0 +1,16 @@
+{
+       "@metadata": {
+               "authors": [
+                       "Mark A. Hershberger"
+               ]
+       },
+       "nviews": "This message is used on [[Special:PopularPages]] to say how 
many times each page has been viewed.\n\nPreceded by the page title, like: Page 
title ($1 views)\n\nParameters:\n* $1 - the number of views",
+       "statistics-header-views": "Used in [[Special:Statistics]]",
+       "statistics-views-total": "Used in [[Special:Statistics]]",
+       "statistics-views-total-desc": "This message follows the message 
{{msg-mw|statistics-views-total}}, in [[Special:Statistics]].",
+       "statistics-views-peredit": "Used in [[Special:Statistics]]",
+       "statistics-mostpopular": "Used in [[Special:Statistics]]",
+       "popularpages": "{{doc-special|PopularPages}}",
+       "popularpages-summary": "{{doc-specialpagesummary|popularpages}}",
+       "pageinfo-views": "The number of times the page has been viewed."
+}
diff --git a/initial_count.sql b/initial_count.sql
new file mode 100644
index 0000000..1424148
--- /dev/null
+++ b/initial_count.sql
@@ -0,0 +1,3 @@
+
+INSERT INTO /*$wgDBprefix*/hit_counter (page_id, page_counter)
+       SELECT /*$wgDBprefix*/page.page_id, /*$wgDBprefix*/page.page_counter 
FROM /*$wgDBprefix*/page;
diff --git a/page_counter.sql b/page_counter.sql
new file mode 100644
index 0000000..e15d98a
--- /dev/null
+++ b/page_counter.sql
@@ -0,0 +1,6 @@
+CREATE TABLE /*$wgDBprefix*/hit_counter (
+  page_id INT(8) UNSIGNED NOT NULL,
+  page_counter BIGINT(20) UNSIGNED NOT NULL DEFAULT '0',
+  PRIMARY KEY (page_id),
+  INDEX (page_counter) 
+);
diff --git a/rename_table.sql b/rename_table.sql
new file mode 100644
index 0000000..f827974
--- /dev/null
+++ b/rename_table.sql
@@ -0,0 +1,2 @@
+RENAME TABLE /*$wgDBprefix*/hitcounter TO /*$wgDBprefix*/hit_counter_extension;
+
diff --git a/update.php b/update.php
new file mode 100644
index 0000000..3d8ead9
--- /dev/null
+++ b/update.php
@@ -0,0 +1,43 @@
+#!/usr/bin/env php
+<?php
+/**
+ * Run updates for just this extension.
+ *
+ * @file
+ * @todo document
+ * @ingroup Maintenance
+ */
+
+namespace HitCounters;
+
+use Maintenance;
+
+# Stolen from WebStart.php, assuming you're running this in root
+$IP = getenv( 'MW_INSTALL_PATH' );
+if ( $IP === false ) {
+       $IP = realpath( '.' ) ?: dirname( __DIR__ );
+}
+require_once "$IP/maintenance/Maintenance.php";
+
+/**
+ * Maintenance script to run database schema updates.
+ *
+ * @ingroup Maintenance
+ */
+class UpdateHitCounter extends Maintenance {
+
+       public function execute() {
+               # Attempt to connect to the database as a privileged user
+               # This will vomit up an error if there are permissions problems
+               $dbconn = wfGetDB( DB_MASTER );
+
+               $shared = $this->hasOption( 'doshared' );
+               $updater = HCUpdater::newForDb( $dbconn, $shared, $this );
+               $updater->clearExtensionUpdates();
+               HCUpdater::getDBUpdates( $updater );
+               $updater->doUpdates( array( 'extensions' ) );
+       }
+}
+
+$maintClass = 'HitCounters\\UpdateHitCounter';
+require_once RUN_MAINTENANCE_IF_MAIN;

-- 
To view, visit https://gerrit.wikimedia.org/r/202629
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: merged
Gerrit-Change-Id: I458ad4a944676462887986b7e34977bf1119bde3
Gerrit-PatchSet: 29
Gerrit-Project: mediawiki/extensions/HitCounters
Gerrit-Branch: master
Gerrit-Owner: MarkAHershberger <m...@nichework.com>
Gerrit-Reviewer: Cicalese <cical...@mitre.org>
Gerrit-Reviewer: Ckoerner <nob...@gmail.com>
Gerrit-Reviewer: Florianschmidtwelzow <florian.schmidt.wel...@t-online.de>
Gerrit-Reviewer: Legoktm <legoktm.wikipe...@gmail.com>
Gerrit-Reviewer: MarkAHershberger <m...@nichework.com>
Gerrit-Reviewer: Mglaser <gla...@hallowelt.biz>
Gerrit-Reviewer: Paladox <thomasmulhall...@yahoo.com>
Gerrit-Reviewer: jenkins-bot <>
Gerrit-Reviewer: tosfos <tos...@yahoo.com>

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