X-Git-Url: https://git.heureux-cyclage.org/?p=lhc%2Fweb%2Fwiklou.git;a=blobdiff_plain;f=includes%2Fchanges%2FChangesFeed.php;h=a71dcbb14ca2d52bf20acf9bc004ba6d794bac33;hp=50c6826bbc2fde5ab2ec893133525ee5fe9294df;hb=6f4d15e38580720d8e4915194834d80d873bd58b;hpb=f950cc221ed58a83c08fb816aa8faee8fbcbe09d diff --git a/includes/changes/ChangesFeed.php b/includes/changes/ChangesFeed.php index 50c6826bbc..a71dcbb14c 100644 --- a/includes/changes/ChangesFeed.php +++ b/includes/changes/ChangesFeed.php @@ -20,11 +20,8 @@ * @file */ -use Wikimedia\Rdbms\ResultWrapper; -use MediaWiki\MediaWikiServices; - /** - * Feed to Special:RecentChanges and Special:RecentChangesLiked + * Feed to Special:RecentChanges and Special:RecentChangesLinked. * * @ingroup Feed */ @@ -65,119 +62,6 @@ class ChangesFeed { $feedTitle, htmlspecialchars( $description ), $url ); } - /** - * Generates feed's content - * - * @param ChannelFeed $feed ChannelFeed subclass object (generally the one returned - * by getFeedObject()) - * @param ResultWrapper $rows ResultWrapper object with rows in recentchanges table - * @param int $lastmod Timestamp of the last item in the recentchanges table (only - * used for the cache key) - * @param FormOptions $opts As in SpecialRecentChanges::getDefaultOptions() - * @return null|bool True or null - */ - public function execute( $feed, $rows, $lastmod, $opts ) { - global $wgLang, $wgRenderHashAppend; - - if ( !FeedUtils::checkFeedOutput( $this->format ) ) { - return null; - } - - $cache = MediaWikiServices::getInstance()->getMainWANObjectCache(); - $optionsHash = md5( serialize( $opts->getAllValues() ) ) . $wgRenderHashAppend; - $timekey = $cache->makeKey( - $this->type, $this->format, $wgLang->getCode(), $optionsHash, 'timestamp' ); - $key = $cache->makeKey( $this->type, $this->format, $wgLang->getCode(), $optionsHash ); - - FeedUtils::checkPurge( $timekey, $key ); - - /** - * Bumping around loading up diffs can be pretty slow, so where - * possible we want to cache the feed output so the next visitor - * gets it quick too. - */ - $cachedFeed = $this->loadFromCache( $lastmod, $timekey, $key ); - if ( is_string( $cachedFeed ) ) { - wfDebug( "RC: Outputting cached feed\n" ); - $feed->httpHeaders(); - echo $cachedFeed; - } else { - wfDebug( "RC: rendering new feed and caching it\n" ); - ob_start(); - self::generateFeed( $rows, $feed ); - $cachedFeed = ob_get_contents(); - ob_end_flush(); - $this->saveToCache( $cachedFeed, $timekey, $key ); - } - return true; - } - - /** - * Save to feed result to cache - * - * @param string $feed Feed's content - * @param string $timekey Memcached key of the last modification - * @param string $key Memcached key of the content - */ - public function saveToCache( $feed, $timekey, $key ) { - $cache = MediaWikiServices::getInstance()->getMainWANObjectCache(); - $cache->set( $key, $feed, $cache::TTL_DAY ); - $cache->set( $timekey, wfTimestamp( TS_MW ), $cache::TTL_DAY ); - } - - /** - * Try to load the feed result from cache - * - * @param int $lastmod Timestamp of the last item in the recentchanges table - * @param string $timekey Memcached key of the last modification - * @param string $key Memcached key of the content - * @return string|bool Feed's content on cache hit or false on cache miss - */ - public function loadFromCache( $lastmod, $timekey, $key ) { - global $wgFeedCacheTimeout, $wgOut; - - $cache = MediaWikiServices::getInstance()->getMainWANObjectCache(); - $feedLastmod = $cache->get( $timekey ); - - if ( ( $wgFeedCacheTimeout > 0 ) && $feedLastmod ) { - /** - * If the cached feed was rendered very recently, we may - * go ahead and use it even if there have been edits made - * since it was rendered. This keeps a swarm of requests - * from being too bad on a super-frequently edited wiki. - */ - - $feedAge = time() - wfTimestamp( TS_UNIX, $feedLastmod ); - $feedLastmodUnix = wfTimestamp( TS_UNIX, $feedLastmod ); - $lastmodUnix = wfTimestamp( TS_UNIX, $lastmod ); - - if ( $feedAge < $wgFeedCacheTimeout || $feedLastmodUnix > $lastmodUnix ) { - wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" ); - if ( $feedLastmodUnix < $lastmodUnix ) { - $wgOut->setLastModified( $feedLastmod ); // T23916 - } - return $cache->get( $key ); - } else { - wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" ); - } - } - return false; - } - - /** - * Generate the feed items given a row from the database, printing the feed. - * @param object $rows IDatabase resource with recentchanges rows - * @param ChannelFeed &$feed - */ - public static function generateFeed( $rows, &$feed ) { - $items = self::buildItems( $rows ); - $feed->outHeader(); - foreach ( $items as $item ) { - $feed->outItem( $item ); - } - $feed->outFooter(); - } - /** * Generate the feed items given a row from the database. * @param object $rows IDatabase resource with recentchanges rows