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-rw-r--r--includes/cache/bloom/BloomCache.php323
-rw-r--r--includes/cache/bloom/BloomCacheRedis.php370
-rw-r--r--includes/cache/bloom/BloomFilters.php79
3 files changed, 0 insertions, 772 deletions
diff --git a/includes/cache/bloom/BloomCache.php b/includes/cache/bloom/BloomCache.php
deleted file mode 100644
index 236db954..00000000
--- a/includes/cache/bloom/BloomCache.php
+++ /dev/null
@@ -1,323 +0,0 @@
-<?php
-/**
- * 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
- */
-
-/**
- * Persistent bloom filter used to avoid expensive lookups
- *
- * @since 1.24
- */
-abstract class BloomCache {
- /** @var string Unique ID for key namespacing */
- protected $cacheID;
-
- /** @var array Map of (id => BloomCache) */
- protected static $instances = array();
-
- /**
- * @param string $id
- * @return BloomCache
- */
- final public static function get( $id ) {
- global $wgBloomFilterStores;
-
- if ( !isset( self::$instances[$id] ) ) {
- if ( isset( $wgBloomFilterStores[$id] ) ) {
- $class = $wgBloomFilterStores[$id]['class'];
- self::$instances[$id] = new $class( $wgBloomFilterStores[$id] );
- } else {
- wfDebug( "No bloom filter store '$id'; using EmptyBloomCache." );
- return new EmptyBloomCache( array() );
- }
- }
-
- return self::$instances[$id];
- }
-
- /**
- * Create a new bloom cache instance from configuration.
- * This should only be called from within BloomCache.
- *
- * @param array $config Parameters include:
- * - cacheID : Prefix to all bloom filter names that is unique to this cache.
- * It should only consist of alphanumberic, '-', and '_' characters.
- * This ID is what avoids collisions if multiple logical caches
- * use the same storage system, so this should be set carefully.
- */
- public function __construct( array $config ) {
- $this->cacheID = $config['cacheId'];
- if ( !preg_match( '!^[a-zA-Z0-9-_]{1,32}$!', $this->cacheID ) ) {
- throw new MWException( "Cache ID '{$this->cacheID}' is invalid." );
- }
- }
-
- /**
- * Check if a member is set in the bloom filter
- *
- * A member being set means that it *might* have been added.
- * A member not being set means it *could not* have been added.
- *
- * This abstracts over isHit() to deal with filter updates and readiness.
- * A class must exist with the name BloomFilter<type> and a static public
- * mergeAndCheck() method. The later takes the following arguments:
- * (BloomCache $bcache, $domain, $virtualKey, array $status)
- * The method should return a bool indicating whether to use the filter.
- *
- * The 'shared' bloom key must be used for any updates and will be used
- * for the membership check if the method returns true. Since the key is shared,
- * the method should never use delete(). The filter cannot be used in cases where
- * membership in the filter needs to be taken away. In such cases, code *cannot*
- * use this method - instead, it can directly use the other BloomCache methods
- * to manage custom filters with their own keys (e.g. not 'shared').
- *
- * @param string $domain
- * @param string $type
- * @param string $member
- * @return bool True if set, false if not (also returns true on error)
- */
- final public function check( $domain, $type, $member ) {
- $section = new ProfileSection( get_class( $this ) . '::' . __FUNCTION__ );
-
- if ( method_exists( "BloomFilter{$type}", 'mergeAndCheck' ) ) {
- try {
- $virtualKey = "$domain:$type";
-
- $status = $this->getStatus( $virtualKey );
- if ( $status == false ) {
- wfDebug( "Could not query virtual bloom filter '$virtualKey'." );
- return null;
- }
-
- $useFilter = call_user_func_array(
- array( "BloomFilter{$type}", 'mergeAndCheck' ),
- array( $this, $domain, $virtualKey, $status )
- );
-
- if ( $useFilter ) {
- return ( $this->isHit( 'shared', "$virtualKey:$member" ) !== false );
- }
- } catch ( MWException $e ) {
- MWExceptionHandler::logException( $e );
- return true;
- }
- }
-
- return true;
- }
-
- /**
- * Inform the bloom filter of a new member in order to keep it up to date
- *
- * @param string $domain
- * @param string $type
- * @param string|array $members
- * @return bool Success
- */
- final public function insert( $domain, $type, $members ) {
- $section = new ProfileSection( get_class( $this ) . '::' . __FUNCTION__ );
-
- if ( method_exists( "BloomFilter{$type}", 'mergeAndCheck' ) ) {
- try {
- $virtualKey = "$domain:$type";
- $prefixedMembers = array();
- foreach ( (array)$members as $member ) {
- $prefixedMembers[] = "$virtualKey:$member";
- }
-
- return $this->add( 'shared', $prefixedMembers );
- } catch ( MWException $e ) {
- MWExceptionHandler::logException( $e );
- return false;
- }
- }
-
- return true;
- }
-
- /**
- * Create a new bloom filter at $key (if one does not exist yet)
- *
- * @param string $key
- * @param integer $size Bit length [default: 1000000]
- * @param float $precision [default: .001]
- * @return bool Success
- */
- final public function init( $key, $size = 1000000, $precision = .001 ) {
- $section = new ProfileSection( get_class( $this ) . '::' . __FUNCTION__ );
-
- return $this->doInit( "{$this->cacheID}:$key", $size, min( .1, $precision ) );
- }
-
- /**
- * Add a member to the bloom filter at $key
- *
- * @param string $key
- * @param string|array $members
- * @return bool Success
- */
- final public function add( $key, $members ) {
- $section = new ProfileSection( get_class( $this ) . '::' . __FUNCTION__ );
-
- return $this->doAdd( "{$this->cacheID}:$key", (array)$members );
- }
-
- /**
- * Check if a member is set in the bloom filter.
- *
- * A member being set means that it *might* have been added.
- * A member not being set means it *could not* have been added.
- *
- * If this returns true, then the caller usually should do the
- * expensive check (whatever that may be). It can be avoided otherwise.
- *
- * @param string $key
- * @param string $member
- * @return bool|null True if set, false if not, null on error
- */
- final public function isHit( $key, $member ) {
- $section = new ProfileSection( get_class( $this ) . '::' . __FUNCTION__ );
-
- return $this->doIsHit( "{$this->cacheID}:$key", $member );
- }
-
- /**
- * Destroy a bloom filter at $key
- *
- * @param string $key
- * @return bool Success
- */
- final public function delete( $key ) {
- $section = new ProfileSection( get_class( $this ) . '::' . __FUNCTION__ );
-
- return $this->doDelete( "{$this->cacheID}:$key" );
- }
-
- /**
- * Set the status map of the virtual bloom filter at $key
- *
- * @param string $virtualKey
- * @param array $values Map including some of (lastID, asOfTime, epoch)
- * @return bool Success
- */
- final public function setStatus( $virtualKey, array $values ) {
- $section = new ProfileSection( get_class( $this ) . '::' . __FUNCTION__ );
-
- return $this->doSetStatus( "{$this->cacheID}:$virtualKey", $values );
- }
-
- /**
- * Get the status map of the virtual bloom filter at $key
- *
- * The map includes:
- * - lastID : the highest ID of the items merged in
- * - asOfTime : UNIX timestamp that the filter is up-to-date as of
- * - epoch : UNIX timestamp that filter started being populated
- * Unset fields will have a null value.
- *
- * @param string $virtualKey
- * @return array|bool False on failure
- */
- final public function getStatus( $virtualKey ) {
- $section = new ProfileSection( get_class( $this ) . '::' . __FUNCTION__ );
-
- return $this->doGetStatus( "{$this->cacheID}:$virtualKey" );
- }
-
- /**
- * Get an exclusive lock on a filter for updates
- *
- * @param string $virtualKey
- * @return ScopedCallback|ScopedLock|null Returns null if acquisition failed
- */
- public function getScopedLock( $virtualKey ) {
- return null;
- }
-
- /**
- * @param string $key
- * @param integer $size Bit length
- * @param float $precision
- * @return bool Success
- */
- abstract protected function doInit( $key, $size, $precision );
-
- /**
- * @param string $key
- * @param array $members
- * @return bool Success
- */
- abstract protected function doAdd( $key, array $members );
-
- /**
- * @param string $key
- * @param string $member
- * @return bool|null
- */
- abstract protected function doIsHit( $key, $member );
-
- /**
- * @param string $key
- * @return bool Success
- */
- abstract protected function doDelete( $key );
-
- /**
- * @param string $virtualKey
- * @param array $values
- * @return bool Success
- */
- abstract protected function doSetStatus( $virtualKey, array $values );
-
- /**
- * @param string $key
- * @return array|bool
- */
- abstract protected function doGetStatus( $key );
-}
-
-class EmptyBloomCache extends BloomCache {
- public function __construct( array $config ) {
- parent::__construct( array( 'cacheId' => 'none' ) );
- }
-
- protected function doInit( $key, $size, $precision ) {
- return true;
- }
-
- protected function doAdd( $key, array $members ) {
- return true;
- }
-
- protected function doIsHit( $key, $member ) {
- return true;
- }
-
- protected function doDelete( $key ) {
- return true;
- }
-
- protected function doSetStatus( $virtualKey, array $values ) {
- return true;
- }
-
- protected function doGetStatus( $virtualKey ) {
- return array( 'lastID' => null, 'asOfTime' => null, 'epoch' => null ) ;
- }
-}
diff --git a/includes/cache/bloom/BloomCacheRedis.php b/includes/cache/bloom/BloomCacheRedis.php
deleted file mode 100644
index 212e5e8b..00000000
--- a/includes/cache/bloom/BloomCacheRedis.php
+++ /dev/null
@@ -1,370 +0,0 @@
-<?php
-/**
- * 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
- */
-
-/**
- * Bloom filter implemented using Redis
- *
- * The Redis server must be >= 2.6 and should have volatile-lru or volatile-ttl
- * if there is any eviction policy. It should not be allkeys-* in any case. Also,
- * this can be used in a simple master/slave setup or with Redis Sentinel preferably.
- *
- * Some bits are based on https://github.com/ErikDubbelboer/redis-lua-scaling-bloom-filter
- * but are simplified to use a single filter instead of up to 32 filters.
- *
- * @since 1.24
- */
-class BloomCacheRedis extends BloomCache {
- /** @var RedisConnectionPool */
- protected $redisPool;
- /** @var RedisLockManager */
- protected $lockMgr;
- /** @var array */
- protected $servers;
- /** @var integer Federate each filter into this many redis bitfield objects */
- protected $segments = 128;
-
- /**
- * @params include:
- * - redisServers : list of servers (address:<port>) (the first is the master)
- * - redisConf : additional redis configuration
- *
- * @param array $config
- */
- public function __construct( array $config ) {
- parent::__construct( $config );
-
- $redisConf = $config['redisConfig'];
- $redisConf['serializer'] = 'none'; // manage that in this class
- $this->redisPool = RedisConnectionPool::singleton( $redisConf );
- $this->servers = $config['redisServers'];
- $this->lockMgr = new RedisLockManager( array(
- 'lockServers' => array( 'srv1' => $this->servers[0] ),
- 'srvsByBucket' => array( 0 => array( 'srv1' ) ),
- 'redisConfig' => $config['redisConfig']
- ) );
- }
-
- protected function doInit( $key, $size, $precision ) {
- $conn = $this->getConnection( 'master' );
- if ( !$conn ) {
- return false;
- }
-
- // 80000000 items at p = .001 take up 500MB and fit into one value.
- // Do not hit the 512MB redis value limit by reducing the demands.
- $size = min( $size, 80000000 * $this->segments );
- $precision = max( round( $precision, 3 ), .001 );
- $epoch = microtime( true );
-
- static $script =
-<<<LUA
- local kMetadata, kData = unpack(KEYS)
- local aEntries, aPrec, aEpoch = unpack(ARGV)
- if redis.call('EXISTS',kMetadata) == 0 or redis.call('EXISTS',kData) == 0 then
- redis.call('DEL',kMetadata)
- redis.call('HSET',kMetadata,'entries',aEntries)
- redis.call('HSET',kMetadata,'precision',aPrec)
- redis.call('HSET',kMetadata,'epoch',aEpoch)
- redis.call('SET',kData,'')
- return 1
- end
- return 0
-LUA;
-
- $res = false;
- try {
- $conn->script( 'load', $script );
- $conn->multi( Redis::MULTI );
- for ( $i = 0; $i < $this->segments; ++$i ) {
- $res = $conn->luaEval( $script,
- array(
- "$key:$i:bloom-metadata", # KEYS[1]
- "$key:$i:bloom-data", # KEYS[2]
- ceil( $size / $this->segments ), # ARGV[1]
- $precision, # ARGV[2]
- $epoch # ARGV[3]
- ),
- 2 # number of first argument(s) that are keys
- );
- }
- $results = $conn->exec();
- $res = $results && !in_array( false, $results, true );
- } catch ( RedisException $e ) {
- $this->handleException( $conn, $e );
- }
-
- return ( $res !== false );
- }
-
- protected function doAdd( $key, array $members ) {
- $conn = $this->getConnection( 'master' );
- if ( !$conn ) {
- return false;
- }
-
- static $script =
-<<<LUA
- local kMetadata, kData = unpack(KEYS)
- local aMember = unpack(ARGV)
-
- -- Check if the filter was initialized
- if redis.call('EXISTS',kMetadata) == 0 or redis.call('EXISTS',kData) == 0 then
- return false
- end
-
- -- Initial expected entries and desired precision
- local entries = 1*redis.call('HGET',kMetadata,'entries')
- local precision = 1*redis.call('HGET',kMetadata,'precision')
- local hash = redis.sha1hex(aMember)
-
- -- Based on the math from: http://en.wikipedia.org/wiki/Bloom_filter#Probability_of_false_positives
- -- 0.480453013 = ln(2)^2
- local bits = math.ceil((entries * math.log(precision)) / -0.480453013)
-
- -- 0.693147180 = ln(2)
- local k = math.floor(0.693147180 * bits / entries)
-
- -- This uses a variation on:
- -- 'Less Hashing, Same Performance: Building a Better Bloom Filter'
- -- http://www.eecs.harvard.edu/~kirsch/pubs/bbbf/esa06.pdf
- local h = { }
- h[0] = tonumber(string.sub(hash, 1, 8 ), 16)
- h[1] = tonumber(string.sub(hash, 9, 16), 16)
- h[2] = tonumber(string.sub(hash, 17, 24), 16)
- h[3] = tonumber(string.sub(hash, 25, 32), 16)
-
- for i=1, k do
- local pos = (h[i % 2] + i * h[2 + (((i + (i % 2)) % 4) / 2)]) % bits
- redis.call('SETBIT', kData, pos, 1)
- end
-
- return 1
-LUA;
-
- $res = false;
- try {
- $conn->script( 'load', $script );
- $conn->multi( Redis::PIPELINE );
- foreach ( $members as $member ) {
- $i = $this->getSegment( $member );
- $conn->luaEval( $script,
- array(
- "$key:$i:bloom-metadata", # KEYS[1],
- "$key:$i:bloom-data", # KEYS[2]
- $member # ARGV[1]
- ),
- 2 # number of first argument(s) that are keys
- );
- }
- $results = $conn->exec();
- $res = $results && !in_array( false, $results, true );
- } catch ( RedisException $e ) {
- $this->handleException( $conn, $e );
- }
-
- if ( $res === false ) {
- wfDebug( "Could not add to the '$key' bloom filter; it may be missing." );
- }
-
- return ( $res !== false );
- }
-
- protected function doSetStatus( $virtualKey, array $values ) {
- $conn = $this->getConnection( 'master' );
- if ( !$conn ) {
- return null;
- }
-
- $res = false;
- try {
- $res = $conn->hMSet( "$virtualKey:filter-metadata", $values );
- } catch ( RedisException $e ) {
- $this->handleException( $conn, $e );
- }
-
- return ( $res !== false );
- }
-
- protected function doGetStatus( $virtualKey ) {
- $conn = $this->getConnection( 'slave' );
- if ( !$conn ) {
- return false;
- }
-
- $res = false;
- try {
- $res = $conn->hGetAll( "$virtualKey:filter-metadata" );
- } catch ( RedisException $e ) {
- $this->handleException( $conn, $e );
- }
-
- if ( is_array( $res ) ) {
- $res['lastID'] = isset( $res['lastID'] ) ? $res['lastID'] : null;
- $res['asOfTime'] = isset( $res['asOfTime'] ) ? $res['asOfTime'] : null;
- $res['epoch'] = isset( $res['epoch'] ) ? $res['epoch'] : null;
- }
-
- return $res;
- }
-
- protected function doIsHit( $key, $member ) {
- $conn = $this->getConnection( 'slave' );
- if ( !$conn ) {
- return null;
- }
-
- static $script =
-<<<LUA
- local kMetadata, kData = unpack(KEYS)
- local aMember = unpack(ARGV)
-
- -- Check if the filter was initialized
- if redis.call('EXISTS',kMetadata) == 0 or redis.call('EXISTS',kData) == 0 then
- return false
- end
-
- -- Initial expected entries and desired precision.
- -- This determines the size of the first and subsequent filters.
- local entries = redis.call('HGET',kMetadata,'entries')
- local precision = redis.call('HGET',kMetadata,'precision')
- local hash = redis.sha1hex(aMember)
-
- -- This uses a variation on:
- -- 'Less Hashing, Same Performance: Building a Better Bloom Filter'
- -- http://www.eecs.harvard.edu/~kirsch/pubs/bbbf/esa06.pdf
- local h = { }
- h[0] = tonumber(string.sub(hash, 1, 8 ), 16)
- h[1] = tonumber(string.sub(hash, 9, 16), 16)
- h[2] = tonumber(string.sub(hash, 17, 24), 16)
- h[3] = tonumber(string.sub(hash, 25, 32), 16)
-
- -- 0.480453013 = ln(2)^2
- local bits = math.ceil((entries * math.log(precision)) / -0.480453013)
-
- -- 0.693147180 = ln(2)
- local k = math.floor(0.693147180 * bits / entries)
-
- local found = 1
- for i=1, k do
- local pos = (h[i % 2] + i * h[2 + (((i + (i % 2)) % 4) / 2)]) % bits
- if redis.call('GETBIT', kData, pos) == 0 then
- found = 0
- break
- end
- end
-
- return found
-LUA;
-
- $res = null;
- try {
- $i = $this->getSegment( $member );
- $res = $conn->luaEval( $script,
- array(
- "$key:$i:bloom-metadata", # KEYS[1],
- "$key:$i:bloom-data", # KEYS[2]
- $member # ARGV[1]
- ),
- 2 # number of first argument(s) that are keys
- );
- } catch ( RedisException $e ) {
- $this->handleException( $conn, $e );
- }
-
- return is_int( $res ) ? (bool)$res : null;
- }
-
- protected function doDelete( $key ) {
- $conn = $this->getConnection( 'master' );
- if ( !$conn ) {
- return false;
- }
-
- $res = false;
- try {
- $keys = array();
- for ( $i = 0; $i < $this->segments; ++$i ) {
- $keys[] = "$key:$i:bloom-metadata";
- $keys[] = "$key:$i:bloom-data";
- }
- $res = $conn->delete( $keys );
- } catch ( RedisException $e ) {
- $this->handleException( $conn, $e );
- }
-
- return ( $res !== false );
- }
-
- public function getScopedLock( $virtualKey ) {
- $status = Status::newGood();
- return ScopedLock::factory( $this->lockMgr,
- array( $virtualKey ), LockManager::LOCK_EX, $status );
- }
-
- /**
- * @param string $member
- * @return integer
- */
- protected function getSegment( $member ) {
- return hexdec( substr( md5( $member ), 0, 2 ) ) % $this->segments;
- }
-
- /**
- * $param string $to (master/slave)
- * @return RedisConnRef|bool Returns false on failure
- */
- protected function getConnection( $to ) {
- if ( $to === 'master' ) {
- $conn = $this->redisPool->getConnection( $this->servers[0] );
- } else {
- static $lastServer = null;
-
- $conn = false;
- if ( $lastServer ) {
- $conn = $this->redisPool->getConnection( $lastServer );
- if ( $conn ) {
- return $conn; // reuse connection
- }
- }
- $servers = $this->servers;
- $attempts = min( 3, count( $servers ) );
- for ( $i = 1; $i <= $attempts; ++$i ) {
- $index = mt_rand( 0, count( $servers ) - 1 );
- $conn = $this->redisPool->getConnection( $servers[$index] );
- if ( $conn ) {
- $lastServer = $servers[$index];
- return $conn;
- }
- unset( $servers[$index] ); // skip next time
- }
- }
-
- return $conn;
- }
-
- /**
- * @param RedisConnRef $conn
- * @param Exception $e
- */
- protected function handleException( RedisConnRef $conn, $e ) {
- $this->redisPool->handleError( $conn, $e );
- }
-}
diff --git a/includes/cache/bloom/BloomFilters.php b/includes/cache/bloom/BloomFilters.php
deleted file mode 100644
index 9b710d79..00000000
--- a/includes/cache/bloom/BloomFilters.php
+++ /dev/null
@@ -1,79 +0,0 @@
-<?php
-/**
- * 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
- */
-
-/**
- * @since 1.24
- */
-class BloomFilterTitleHasLogs {
- public static function mergeAndCheck(
- BloomCache $bcache, $domain, $virtualKey, array $status
- ) {
- $age = microtime( true ) - $status['asOfTime']; // seconds
- $scopedLock = ( mt_rand( 1, (int)pow( 3, max( 0, 5 - $age ) ) ) == 1 )
- ? $bcache->getScopedLock( $virtualKey )
- : false;
-
- if ( $scopedLock ) {
- $updates = self::merge( $bcache, $domain, $virtualKey, $status );
- if ( isset( $updates['asOfTime'] ) ) {
- $age = ( microtime( true ) - $updates['asOfTime'] );
- }
- }
-
- return ( $age < 30 );
- }
-
- public static function merge(
- BloomCache $bcache, $domain, $virtualKey, array $status
- ) {
- $limit = 1000;
- $dbr = wfGetDB( DB_SLAVE, array(), $domain );
- $res = $dbr->select( 'logging',
- array( 'log_namespace', 'log_title', 'log_id', 'log_timestamp' ),
- array( 'log_id > ' . $dbr->addQuotes( (int)$status['lastID'] ) ),
- __METHOD__,
- array( 'ORDER BY' => 'log_id', 'LIMIT' => $limit )
- );
-
- $updates = array();
- if ( $res->numRows() > 0 ) {
- $members = array();
- foreach ( $res as $row ) {
- $members[] = "$virtualKey:{$row->log_namespace}:{$row->log_title}";
- }
- $lastID = $row->log_id;
- $lastTime = $row->log_timestamp;
- if ( !$bcache->add( 'shared', $members ) ) {
- return false;
- }
- $updates['lastID'] = $lastID;
- $updates['asOfTime'] = wfTimestamp( TS_UNIX, $lastTime );
- } else {
- $updates['asOfTime'] = microtime( true );
- }
-
- $updates['epoch'] = $status['epoch'] ?: microtime( true );
-
- $bcache->setStatus( $virtualKey, $updates );
-
- return $updates;
- }
-}
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