diff options
Diffstat (limited to 'includes/jobqueue/aggregator/JobQueueAggregatorMemc.php')
-rw-r--r-- | includes/jobqueue/aggregator/JobQueueAggregatorMemc.php | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/includes/jobqueue/aggregator/JobQueueAggregatorMemc.php b/includes/jobqueue/aggregator/JobQueueAggregatorMemc.php deleted file mode 100644 index ae266ef3..00000000 --- a/includes/jobqueue/aggregator/JobQueueAggregatorMemc.php +++ /dev/null @@ -1,125 +0,0 @@ -<?php -/** - * Job queue aggregator code that uses BagOStuff. - * - * 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 - * @author Aaron Schulz - */ - -/** - * Class to handle tracking information about all queues using BagOStuff - * - * @ingroup JobQueue - * @since 1.21 - */ -class JobQueueAggregatorMemc extends JobQueueAggregator { - /** @var BagOStuff */ - protected $cache; - - protected $cacheTTL; // integer; seconds - - /** - * @param array $params Possible keys: - * - objectCache : Name of an object cache registered in $wgObjectCaches. - * This defaults to the one specified by $wgMainCacheType. - * - cacheTTL : Seconds to cache the aggregate data before regenerating. - */ - protected function __construct( array $params ) { - parent::__construct( $params ); - $this->cache = isset( $params['objectCache'] ) - ? wfGetCache( $params['objectCache'] ) - : wfGetMainCache(); - $this->cacheTTL = isset( $params['cacheTTL'] ) ? $params['cacheTTL'] : 180; // 3 min - } - - /** - * @see JobQueueAggregator::doNotifyQueueEmpty() - */ - protected function doNotifyQueueEmpty( $wiki, $type ) { - $key = $this->getReadyQueueCacheKey(); - // Delist the queue from the "ready queue" list - if ( $this->cache->add( "$key:lock", 1, 60 ) ) { // lock - $curInfo = $this->cache->get( $key ); - if ( is_array( $curInfo ) && isset( $curInfo['pendingDBs'][$type] ) ) { - if ( in_array( $wiki, $curInfo['pendingDBs'][$type] ) ) { - $curInfo['pendingDBs'][$type] = array_diff( - $curInfo['pendingDBs'][$type], array( $wiki ) ); - $this->cache->set( $key, $curInfo ); - } - } - $this->cache->delete( "$key:lock" ); // unlock - } - - return true; - } - - /** - * @see JobQueueAggregator::doNotifyQueueNonEmpty() - */ - protected function doNotifyQueueNonEmpty( $wiki, $type ) { - return true; // updated periodically - } - - /** - * @see JobQueueAggregator::doAllGetReadyWikiQueues() - */ - protected function doGetAllReadyWikiQueues() { - $key = $this->getReadyQueueCacheKey(); - // If the cache entry wasn't present, is stale, or in .1% of cases otherwise, - // regenerate the cache. Use any available stale cache if another process is - // currently regenerating the pending DB information. - $pendingDbInfo = $this->cache->get( $key ); - if ( !is_array( $pendingDbInfo ) - || ( time() - $pendingDbInfo['timestamp'] ) > $this->cacheTTL - || mt_rand( 0, 999 ) == 0 - ) { - if ( $this->cache->add( "$key:rebuild", 1, 1800 ) ) { // lock - $pendingDbInfo = array( - 'pendingDBs' => $this->findPendingWikiQueues(), - 'timestamp' => time() - ); - for ( $attempts = 1; $attempts <= 25; ++$attempts ) { - if ( $this->cache->add( "$key:lock", 1, 60 ) ) { // lock - $this->cache->set( $key, $pendingDbInfo ); - $this->cache->delete( "$key:lock" ); // unlock - break; - } - } - $this->cache->delete( "$key:rebuild" ); // unlock - } - } - - return is_array( $pendingDbInfo ) - ? $pendingDbInfo['pendingDBs'] - : array(); // cache is both empty and locked - } - - /** - * @see JobQueueAggregator::doPurge() - */ - protected function doPurge() { - return $this->cache->delete( $this->getReadyQueueCacheKey() ); - } - - /** - * @return string - */ - private function getReadyQueueCacheKey() { - return "jobqueue:aggregator:ready-queues:v1"; // global - } -} |