mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Echo
synced 2024-09-24 18:59:40 +00:00
ac85f28f3e
We were using the local user ID instead, which is not the same on every wiki, which caused strange cache staleness and pollution behavior. Run sets through a wrapper function (gets were already wrapped) so we can update the instance cache and deal with uncomputable cache keys in one place. A global cache key may be uncomputable if we fail to obtain the user's global user ID (users aren't supposed to be unattached, but some are). Also bump the cache version to get rid of polluted cache entries. Bumping this version number was probably a good idea anyway, with all the recent changes. Bug: T134533 Change-Id: I1c4f0c2f2eded480c80f8ec7a49a04feb7c5ecfb
619 lines
21 KiB
PHP
619 lines
21 KiB
PHP
<?php
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/**
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* Entity that represents a notification target user
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*/
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class MWEchoNotifUser {
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/**
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* Notification target user
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* @var User
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*/
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private $mUser;
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/**
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* Object cache
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* @var BagOStuff
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*/
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private $cache;
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/**
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* Database access gateway
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* @var EchoUserNotificationGateway
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*/
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private $userNotifGateway;
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/**
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* Notification mapper
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* @var EchoNotificationMapper
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*/
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private $notifMapper;
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/**
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* Target page mapper
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* @var EchoTargetPageMapper
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*/
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private $targetPageMapper;
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/**
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* @var EchoForeignNotifications
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*/
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private $foreignNotifications = null;
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/**
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* @var array
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*/
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private $cached;
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// The max notification count shown in badge
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// The max number shown in bundled message, eg, <user> and 99+ others <action>.
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// This is really a totally separate thing, and could be its own constant.
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// WARNING: If you change this, you should also change all references in the
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// i18n messages (100 and 99) in all repositories using Echo.
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const MAX_BADGE_COUNT = 99;
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/**
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* Usually client code doesn't need to initialize the object directly
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* because it could be obtained from factory method newFromUser()
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* @param User $user
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* @param BagOStuff $cache
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* @param EchoUserNotificationGateway $userNotifGateway
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* @param EchoNotificationMapper $notifMapper
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* @param EchoTargetPageMapper $targetPageMapper
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*/
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public function __construct(
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User $user,
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BagOStuff $cache,
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EchoUserNotificationGateway $userNotifGateway,
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EchoNotificationMapper $notifMapper,
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EchoTargetPageMapper $targetPageMapper
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) {
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$this->mUser = $user;
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$this->userNotifGateway = $userNotifGateway;
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$this->cache = $cache;
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$this->notifMapper = $notifMapper;
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$this->targetPageMapper = $targetPageMapper;
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}
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/**
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* Factory method
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* @param $user User
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* @throws MWException
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* @return MWEchoNotifUser
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*/
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public static function newFromUser( User $user ) {
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if ( $user->isAnon() ) {
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throw new MWException( 'User must be logged in to view notification!' );
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}
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return new MWEchoNotifUser(
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$user,
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ObjectCache::getMainStashInstance(),
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new EchoUserNotificationGateway( $user, MWEchoDbFactory::newFromDefault() ),
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new EchoNotificationMapper(),
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new EchoTargetPageMapper()
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);
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}
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/**
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* Clear talk page notification when users visit their talk pages. This
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* only resets if the notification count is less than max notification
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* count. If the user has 99+ notifications, decrementing 1 bundled talk
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* page notification would not really affect the count
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*/
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public function clearTalkNotification() {
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// There is no new talk notification
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if ( $this->cache->get( $this->getTalkNotificationCacheKey() ) === '0' ) {
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return;
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}
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// Do nothing if the count display meets the max 99+
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if ( $this->notifCountHasReachedMax() ) {
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return;
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}
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// Mark the talk page notification as read
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$this->markRead(
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$this->userNotifGateway->getUnreadNotifications(
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'edit-user-talk'
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)
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);
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$this->flagCacheWithNoTalkNotification();
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}
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/**
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* Flag the cache with new talk notification
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*/
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public function flagCacheWithNewTalkNotification() {
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$this->cache->set( $this->getTalkNotificationCacheKey(), '1', 86400 );
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}
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/**
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* Flag the cache with no talk notification
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*/
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public function flagCacheWithNoTalkNotification() {
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$this->cache->set( $this->getTalkNotificationCacheKey(), '0', 86400 );
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}
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/**
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* Memcache key for talk notification
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*/
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public function getTalkNotificationCacheKey() {
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global $wgEchoConfig;
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return wfMemcKey( 'echo-new-talk-notification', $this->mUser->getId(), $wgEchoConfig['version'] );
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}
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/**
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* Check if the user has more notification count than max count display
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* @return bool
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*/
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public function notifCountHasReachedMax() {
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if ( $this->getLocalNotificationCount() >= self::MAX_BADGE_COUNT ) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Get message count for this user.
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*
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* @param boolean $cached Set to false to bypass the cache. (Optional. Defaults to true)
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* @param int $dbSource Use master or slave database to pull count (Optional. Defaults to DB_SLAVE)
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* @return int
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*/
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public function getMessageCount( $cached = true, $dbSource = DB_SLAVE ) {
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return $this->getNotificationCount( $cached, $dbSource, EchoAttributeManager::MESSAGE );
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}
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/**
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* Get alert count for this user.
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*
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* @param boolean $cached Set to false to bypass the cache. (Optional. Defaults to true)
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* @param int $dbSource Use master or slave database to pull count (Optional. Defaults to DB_SLAVE)
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* @return int
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*/
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public function getAlertCount( $cached = true, $dbSource = DB_SLAVE ) {
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return $this->getNotificationCount( $cached, $dbSource, EchoAttributeManager::ALERT );
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}
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public function getLocalNotificationCount( $cached = true, $dbSource = DB_SLAVE, $section = EchoAttributeManager::ALL ) {
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return $this->getNotificationCount( $cached, $dbSource, $section, false );
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}
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/**
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* Retrieves number of unread notifications that a user has, would return
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* MWEchoNotifUser::MAX_BADGE_COUNT + 1 at most
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*
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* @param boolean $cached Set to false to bypass the cache. (Optional. Defaults to true)
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* @param int $dbSource Use master or slave database to pull count (Optional. Defaults to DB_SLAVE)
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* @param string $section Notification section
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* @param bool|string $global Whether to include foreign notifications. If set to 'preference', uses the user's preference.
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* @return int
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*/
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public function getNotificationCount( $cached = true, $dbSource = DB_SLAVE, $section = EchoAttributeManager::ALL, $global = 'preference' ) {
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if ( $this->mUser->isAnon() ) {
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return 0;
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}
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if ( $global === 'preference' ) {
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$global = $this->getForeignNotifications()->isEnabledByUser();
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}
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$memcKey = $this->getMemcKey( 'echo-notification-count' . ( $section === EchoAttributeManager::ALL ? '' : ( '-' . $section ) ), $global );
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if ( $cached ) {
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$data = $this->getFromCache( $memcKey );
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if ( $data !== false && $data !== null ) {
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return (int)$data;
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}
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}
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$attributeManager = EchoAttributeManager::newFromGlobalVars();
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if ( $section === EchoAttributeManager::ALL ) {
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$eventTypesToLoad = $attributeManager->getUserEnabledEvents( $this->mUser, 'web' );
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} else {
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$eventTypesToLoad = $attributeManager->getUserEnabledEventsbySections( $this->mUser, 'web', array( $section ) );
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}
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$count = (int) $this->userNotifGateway->getCappedNotificationCount( $dbSource, $eventTypesToLoad, MWEchoNotifUser::MAX_BADGE_COUNT + 1 );
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if ( $global ) {
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$count += $this->getForeignNotifications()->getCount( $section );
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}
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$this->setInCache( $memcKey, $count, 86400 );
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return $count;
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}
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/**
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* Get the unread timestamp of the latest alert
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*
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* @param boolean $cached Set to false to bypass the cache. (Optional. Defaults to true)
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* @param int $dbSource Use master or slave database to pull count (Optional. Defaults to DB_SLAVE)
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* @return bool|MWTimestamp
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*/
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public function getLastUnreadAlertTime( $cached = true, $dbSource = DB_SLAVE ) {
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return $this->getLastUnreadNotificationTime( $cached, $dbSource, EchoAttributeManager::ALERT );
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}
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/**
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* Get the unread timestamp of the latest message
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*
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* @param boolean $cached Set to false to bypass the cache. (Optional. Defaults to true)
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* @param int $dbSource Use master or slave database to pull count (Optional. Defaults to DB_SLAVE)
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* @return bool|MWTimestamp
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*/
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public function getLastUnreadMessageTime( $cached = true, $dbSource = DB_SLAVE ) {
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return $this->getLastUnreadNotificationTime( $cached, $dbSource, EchoAttributeManager::MESSAGE );
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}
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/**
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* Returns the timestamp of the last unread notification.
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*
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* @param boolean $cached Set to false to bypass the cache. (Optional. Defaults to true)
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* @param int $dbSource Use master or slave database to pull count (Optional. Defaults to DB_SLAVE)
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* @param string $section Notification section
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* @param bool|string $global Whether to include foreign notifications. If set to 'preference', uses the user's preference.
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* @return bool|MWTimestamp Timestamp of last notification, or false if there is none
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*/
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public function getLastUnreadNotificationTime( $cached = true, $dbSource = DB_SLAVE, $section = EchoAttributeManager::ALL, $global = 'preference' ) {
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if ( $this->mUser->isAnon() ) {
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return false;
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}
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if ( $global === 'preference' ) {
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$global = $this->getForeignNotifications()->isEnabledByUser();
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}
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$memcKey = $this->getMemcKey( 'echo-notification-timestamp' . ( $section === EchoAttributeManager::ALL ? '' : ( '-' . $section ) ), $global );
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// read from cache, if allowed
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if ( $cached ) {
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$timestamp = $this->getFromCache( $memcKey );
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if ( $timestamp === -1 ) {
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// -1 means the user has no notifications
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return false;
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} elseif ( $timestamp !== false ) {
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return new MWTimestamp( $timestamp );
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}
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// else cache miss
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}
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$timestamp = false;
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// Get timestamp of most recent local notification, if there is one
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$attributeManager = EchoAttributeManager::newFromGlobalVars();
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if ( $section === EchoAttributeManager::ALL ) {
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$eventTypesToLoad = $attributeManager->getUserEnabledEvents( $this->mUser, 'web' );
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} else {
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$eventTypesToLoad = $attributeManager->getUserEnabledEventsbySections( $this->mUser, 'web', array( $section ) );
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}
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$notifications = $this->notifMapper->fetchUnreadByUser( $this->mUser, 1, null, $eventTypesToLoad, $dbSource );
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if ( $notifications ) {
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$notification = reset( $notifications );
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$timestamp = new MWTimestamp( $notification->getTimestamp() );
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}
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// Use timestamp of most recent foreign notification, if it's more recent
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if ( $global ) {
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$foreignTime = $this->getForeignNotifications()->getTimestamp( $section );
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if (
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$foreignTime !== false &&
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// $foreignTime < $timestamp = invert 0
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// $foreignTime > $timestamp = invert 1
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( $timestamp === false || $foreignTime->diff( $timestamp )->invert === 1 )
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) {
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$timestamp = $foreignTime;
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}
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}
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if ( $timestamp === false ) {
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// No notifications, so no timestamp
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$returnValue = false;
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$cacheValue = -1;
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} else {
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$returnValue = $timestamp;
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$cacheValue = $timestamp->getTimestamp( TS_MW );
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}
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$this->setInCache( $memcKey, $cacheValue, 86400 );
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return $returnValue;
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}
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/**
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* Mark one or more notifications read for a user.
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* @param $eventIds Array of event IDs to mark read
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* @return boolean
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*/
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public function markRead( $eventIds ) {
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$eventIds = array_filter( (array)$eventIds, 'is_numeric' );
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if ( !$eventIds || wfReadOnly() ) {
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return false;
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}
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$res = $this->userNotifGateway->markRead( $eventIds );
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if ( $res ) {
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// Delete records from echo_target_page
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$this->targetPageMapper->deleteByUserEvents( $this->mUser, $eventIds );
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// Update notification count in cache
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$this->resetNotificationCount( DB_MASTER );
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// After this 'mark read', is there any unread edit-user-talk
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// remaining? If not, we should clear the newtalk flag.
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if ( $this->mUser->getNewtalk() ) {
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$unreadEditUserTalk = $this->notifMapper->fetchUnreadByUser( $this->mUser, 1, null, array( 'edit-user-talk' ), DB_MASTER );
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if ( count( $unreadEditUserTalk ) === 0 ) {
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$this->mUser->setNewtalk( false );
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}
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}
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}
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return $res;
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}
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/**
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* Mark one or more notifications unread for a user.
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* @param $eventIds Array of event IDs to mark unread
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* @return boolean
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*/
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public function markUnRead( $eventIds ) {
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$eventIds = array_filter( (array)$eventIds, 'is_numeric' );
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if ( !$eventIds || wfReadOnly() ) {
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return false;
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}
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$res = $this->userNotifGateway->markUnRead( $eventIds );
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if ( $res ) {
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// Update notification count in cache
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$this->resetNotificationCount( DB_MASTER );
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// After this 'mark unread', is there any unread edit-user-talk?
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// If so, we should add the edit-user-talk flag
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if ( !$this->mUser->getNewtalk() ) {
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$unreadEditUserTalk = $this->notifMapper->fetchUnreadByUser( $this->mUser, 1, null, array( 'edit-user-talk' ), DB_MASTER );
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if ( count( $unreadEditUserTalk ) > 0 ) {
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$this->mUser->setNewtalk( true );
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}
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}
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}
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return $res;
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}
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/**
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* Attempt to mark all or sections of notifications as read, this only
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* updates up to $wgEchoMaxUpdateCount records per request, see more
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* detail about this in Echo.php, the other reason is that mediawiki
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* database interface doesn't support updateJoin() that would update
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* across multiple tables, we would visit this later
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*
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* @param string[] $sections
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* @return boolean
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*/
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public function markAllRead( array $sections = array( EchoAttributeManager::ALL ) ) {
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if ( wfReadOnly() ) {
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return false;
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}
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global $wgEchoMaxUpdateCount;
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// Mark all sections as read if this is the case
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if ( in_array( EchoAttributeManager::ALL, $sections ) ) {
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$sections = EchoAttributeManager::$sections;
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}
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$attributeManager = EchoAttributeManager::newFromGlobalVars();
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$eventTypes = $attributeManager->getUserEnabledEventsbySections( $this->mUser, 'web', $sections );
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$notifs = $this->notifMapper->fetchUnreadByUser( $this->mUser, $wgEchoMaxUpdateCount, null, $eventTypes );
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$eventIds = array_filter(
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array_map( function ( EchoNotification $notif ) {
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// This should not happen at all, but use 0 in
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// such case so to keep the code running
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if ( $notif->getEvent() ) {
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return $notif->getEvent()->getId();
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} else {
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return 0;
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}
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}, $notifs )
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);
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$res = $this->markRead( $eventIds );
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if ( $res ) {
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// Delete records from echo_target_page
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$this->targetPageMapper->deleteByUserEvents( $this->mUser, $eventIds );
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if ( count( $notifs ) < $wgEchoMaxUpdateCount ) {
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$this->flagCacheWithNoTalkNotification();
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}
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}
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return $res;
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}
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/**
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* Recalculates the number of notifications that a user has.
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* @param $dbSource int use master or slave database to pull count
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*/
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public function resetNotificationCount( $dbSource = DB_SLAVE ) {
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// Reset alert and message counts, and store them for later
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$alertCount = $this->getNotificationCount( false, $dbSource, EchoAttributeManager::ALERT, false );
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$msgCount = $this->getNotificationCount( false, $dbSource, EchoAttributeManager::MESSAGE, false );
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// For performance, compute the ALL count by adding alerts and messages
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$allCount = $alertCount + $msgCount;
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// For performance, compute the global counts by adding foreign counts to the above
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$globalAlertCount = $alertCount + $this->getForeignNotifications()->getCount( EchoAttributeManager::ALERT );
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$globalMsgCount = $msgCount + $this->getForeignNotifications()->getCount( EchoAttributeManager::MESSAGE );
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$globalAllCount = $globalAlertCount + $globalMsgCount;
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// When notification counts need to be updated, the last notification may have changed,
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// so we also need to recompute the cached timestamp values.
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$alertUnread = $this->getLastUnreadNotificationTime( false, $dbSource, EchoAttributeManager::ALERT, false );
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$msgUnread = $this->getLastUnreadNotificationTime( false, $dbSource, EchoAttributeManager::MESSAGE, false );
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// For performance, compute the ALL count as the highest of these two
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$allUnread = $alertUnread !== false &&
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( $msgUnread === false || $alertUnread->diff( $msgUnread )->invert === 1 ) ?
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$alertUnread : $msgUnread;
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// For performance, compute the global timestamps as max( localTimestamp, foreignTimestamp )
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$foreignAlertUnread = $this->getForeignNotifications()->getTimestamp( EchoAttributeManager::ALERT );
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$globalAlertUnread = $alertUnread !== false &&
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( $foreignAlertUnread === false || $alertUnread->diff( $foreignAlertUnread )->invert === 1 ) ?
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$alertUnread : $foreignAlertUnread;
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$foreignMsgUnread = $this->getForeignNotifications()->getTimestamp( EchoAttributeManager::MESSAGE );
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$globalMsgUnread = $msgUnread !== false &&
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( $foreignMsgUnread === false || $msgUnread->diff( $foreignMsgUnread )->invert === 1 ) ?
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$msgUnread : $foreignMsgUnread;
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$globalAllUnread = $globalAlertUnread !== false &&
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( $globalMsgUnread === false || $globalAlertUnread->diff( $globalMsgUnread )->invert === 1 ) ?
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$globalAlertUnread : $globalMsgUnread;
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// Write computed values to cache
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$this->setInCache( $this->getMemcKey( 'echo-notification-count' ), $allCount, 86400 );
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$this->setInCache( $this->getGlobalMemcKey( 'echo-notification-count-alert' ), $globalAlertCount, 86400 );
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$this->setInCache( $this->getGlobalMemcKey( 'echo-notification-count-message' ), $globalMsgCount, 86400 );
|
|
$this->setInCache( $this->getGlobalMemcKey( 'echo-notification-count' ), $globalAllCount, 86400 );
|
|
$this->setInCache( $this->getMemcKey( 'echo-notification-timestamp' ), $allUnread === false ? -1 : $allUnread->getTimestamp( TS_MW ), 86400 );
|
|
$this->setInCache( $this->getGlobalMemcKey( 'echo-notification-timestamp-alert' ), $globalAlertUnread === false ? -1 : $globalAlertUnread->getTimestamp( TS_MW ), 86400 );
|
|
$this->setInCache( $this->getGlobalMemcKey( 'echo-notification-timestamp-message' ), $globalMsgUnread === false ? -1 : $globalMsgUnread->getTimestamp( TS_MW ), 86400 );
|
|
$this->setInCache( $this->getGlobalMemcKey( 'echo-notification-timestamp' ), $globalAllUnread === false ? -1 : $globalAllUnread->getTimestamp( TS_MW ), 86400 );
|
|
|
|
// Invalidate the user's cache
|
|
$user = $this->mUser;
|
|
$user->invalidateCache();
|
|
|
|
// Schedule an update to the echo_unread_wikis table
|
|
DeferredUpdates::addCallableUpdate( function () use ( $user, $alertCount, $alertUnread, $msgCount, $msgUnread ) {
|
|
$uw = EchoUnreadWikis::newFromUser( $user );
|
|
if ( $uw ) {
|
|
$uw->updateCount( wfWikiID(), $alertCount, $alertUnread, $msgCount, $msgUnread );
|
|
}
|
|
} );
|
|
}
|
|
|
|
/**
|
|
* Get the user's email notification format
|
|
* @return string
|
|
*/
|
|
public function getEmailFormat() {
|
|
global $wgAllowHTMLEmail;
|
|
|
|
if ( $wgAllowHTMLEmail ) {
|
|
return $this->mUser->getOption( 'echo-email-format' );
|
|
} else {
|
|
return EchoHooks::EMAIL_FORMAT_PLAIN_TEXT;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get a cache entry from the cache, using a preloaded instance cache.
|
|
* @param string|false $memcKey Cache key returned by getMemcKey()
|
|
* @return mixed Cache value
|
|
*/
|
|
protected function getFromCache( $memcKey ) {
|
|
// getMemcKey() can return false
|
|
if ( $memcKey === false ) {
|
|
return false;
|
|
}
|
|
|
|
// Populate the instance cache
|
|
if ( $this->cached === null ) {
|
|
$keys = $this->preloadKeys();
|
|
$this->cached = $this->cache->getMulti( $keys );
|
|
// also keep track of cache values that couldn't be found (getMulti
|
|
// omits them...)
|
|
$this->cached += array_fill_keys( $keys, false );
|
|
}
|
|
|
|
if ( isset( $this->cached[$memcKey] ) ) {
|
|
return $this->cached[$memcKey];
|
|
}
|
|
|
|
return $this->cache->get( $memcKey );
|
|
}
|
|
|
|
/**
|
|
* Set a cache entry both in the cache and in the instance cache.
|
|
* Use this to write to keys that were loaded with getFromCache().
|
|
* @param string|false $memcKey Cache key returned by getMemcKey()
|
|
* @param mixed $value Cache value to set
|
|
* @param int $expiry Expiry, see BagOStuff::set()
|
|
*/
|
|
protected function setInCache( $memcKey, $value, $expiry ) {
|
|
// getMemcKey() can return false
|
|
if ( $memcKey === false ) {
|
|
return;
|
|
}
|
|
|
|
// Update the instance cache if it's already been populated
|
|
if ( $this->cached !== null ) {
|
|
$this->cached[$memcKey] = $value;
|
|
}
|
|
|
|
$this->cache->set( $memcKey, $value, $expiry );
|
|
}
|
|
|
|
/**
|
|
* Array of memcached keys to load at once.
|
|
*
|
|
* @return array
|
|
*/
|
|
protected function preloadKeys() {
|
|
$keys = array(
|
|
'echo-notification-timestamp',
|
|
'echo-notification-timestamp-' . EchoAttributeManager::MESSAGE,
|
|
'echo-notification-timestamp-' . EchoAttributeManager::ALERT,
|
|
'echo-notification-count',
|
|
'echo-notification-count-' . EchoAttributeManager::MESSAGE,
|
|
'echo-notification-count-' . EchoAttributeManager::ALERT,
|
|
);
|
|
|
|
return array_merge(
|
|
array_map( array( $this, 'getMemcKey' ), $keys ),
|
|
array_map( array( $this, 'getGlobalMemcKey' ), $keys )
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Build a memcached key.
|
|
* @param string $key Key, typically prefixed with echo-notification-
|
|
* @param bool $global If true, return a global memc key; if false, return one local to this wiki
|
|
* @return string|false Memcached key, or false if one could not be generated
|
|
*/
|
|
protected function getMemcKey( $key, $global = false ) {
|
|
global $wgEchoConfig;
|
|
if ( !$global ) {
|
|
return wfMemcKey( $key, $this->mUser->getId(), $wgEchoConfig['version'] );
|
|
}
|
|
|
|
$lookup = CentralIdLookup::factory();
|
|
$globalId = $lookup->centralIdFromLocalUser( $this->mUser, CentralIdLookup::AUDIENCE_RAW );
|
|
if ( !$globalId ) {
|
|
return false;
|
|
}
|
|
return wfGlobalCacheKey( $key, $globalId, $wgEchoConfig['version'] );
|
|
|
|
}
|
|
|
|
protected function getGlobalMemcKey( $key ) {
|
|
return $this->getMemcKey( $key, true );
|
|
}
|
|
|
|
/**
|
|
* Lazy-construct an EchoForeignNotifications instance. This instance is force-enabled, so it
|
|
* returns information about cross-wiki notifications even if the user has them disabled.
|
|
* @return EchoForeignNotifications
|
|
*/
|
|
protected function getForeignNotifications() {
|
|
if ( !$this->foreignNotifications ) {
|
|
$this->foreignNotifications = new EchoForeignNotifications( $this->mUser, true );
|
|
}
|
|
return $this->foreignNotifications;
|
|
}
|
|
}
|