122 lines
3.8 KiB
PHP
122 lines
3.8 KiB
PHP
<?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
|
|
* @ingroup Cache
|
|
* @author Aaron Schulz
|
|
*/
|
|
|
|
/**
|
|
* A cache class that directs writes to one set of servers and reads to
|
|
* another. This assumes that the servers used for reads are setup to slave
|
|
* those that writes go to. This can easily be used with redis for example.
|
|
*
|
|
* In the WAN scenario (e.g. multi-datacenter case), this is useful when
|
|
* writes are rare or they usually take place in the primary datacenter.
|
|
*
|
|
* @ingroup Cache
|
|
* @since 1.25
|
|
*/
|
|
class ReplicatedBagOStuff extends BagOStuff {
|
|
/** @var BagOStuff */
|
|
protected $mCache;
|
|
/** @var BagOStuff */
|
|
protected $sCache;
|
|
|
|
/**
|
|
* Constructor. Parameters are:
|
|
* - masterCache : Cache parameter structures, in the style required by $wgObjectCaches.
|
|
* See the documentation of $wgObjectCaches for more detail.
|
|
* - slaveCache : Cache parameter structures, in the style required by $wgObjectCaches.
|
|
* See the documentation of $wgObjectCaches for more detail.
|
|
*
|
|
* @param array $params
|
|
* @throws MWException
|
|
*/
|
|
public function __construct( $params ) {
|
|
parent::__construct( $params );
|
|
|
|
if ( !isset( $params['masterCache'] ) ) {
|
|
throw new MWException( __METHOD__ . ': the "masterCache" parameter is required' );
|
|
} elseif ( !isset( $params['slaveCache'] ) ) {
|
|
throw new MWException( __METHOD__ . ': the "slaveCache" parameter is required' );
|
|
}
|
|
|
|
$this->mCache = ( $params['masterCache'] instanceof BagOStuff )
|
|
? $params['masterCache']
|
|
: ObjectCache::newFromParams( $params['masterCache'] );
|
|
$this->sCache = ( $params['slaveCache'] instanceof BagOStuff )
|
|
? $params['slaveCache']
|
|
: ObjectCache::newFromParams( $params['slaveCache'] );
|
|
}
|
|
|
|
public function setDebug( $debug ) {
|
|
$this->mCache->setDebug( $debug );
|
|
$this->sCache->setDebug( $debug );
|
|
}
|
|
|
|
public function get( $key, &$casToken = null ) {
|
|
return $this->sCache->get( $key, $casToken );
|
|
}
|
|
|
|
public function getMulti( $keys ) {
|
|
return $this->sCache->getMulti( $keys );
|
|
}
|
|
|
|
public function set( $key, $value, $exptime = 0 ) {
|
|
return $this->mCache->set( $key, $value, $exptime );
|
|
}
|
|
|
|
public function delete( $key ) {
|
|
return $this->mCache->delete( $key );
|
|
}
|
|
|
|
public function add( $key, $value, $exptime = 0 ) {
|
|
return $this->mCache->add( $key, $value, $exptime );
|
|
}
|
|
|
|
public function incr( $key, $value = 1 ) {
|
|
return $this->mCache->incr( $key, $value );
|
|
}
|
|
|
|
public function decr( $key ) {
|
|
return $this->mCache->decr( $key );
|
|
}
|
|
|
|
public function lock( $key, $timeout = 6, $expiry = 6 ) {
|
|
return $this->mCache->lock( $key, $timeout, $expiry );
|
|
}
|
|
|
|
public function unlock( $key ) {
|
|
return $this->mCache->unlock( $key );
|
|
}
|
|
|
|
public function merge( $key, $callback, $exptime = 0, $attempts = 10 ) {
|
|
return $this->mCache->merge( $key, $callback, $exptime, $attempts );
|
|
}
|
|
|
|
public function getLastError() {
|
|
return ( $this->mCache->getLastError() != self::ERR_NONE )
|
|
? $this->mCache->getLastError()
|
|
: $this->sCache->getLastError();
|
|
}
|
|
|
|
public function clearLastError() {
|
|
$this->mCache->clearLastError();
|
|
$this->sCache->clearLastError();
|
|
}
|
|
}
|