includes/libs/objectcache/MemcachedPhpBagOStuff.php

   1 <?php
   2 /**
   3  * Object caching using memcached.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Cache
  22  */
  23
  24 /**
  25  * A wrapper class for the pure-PHP memcached client, exposing a BagOStuff interface.
  26  *
  27  * @ingroup Cache
  28  */
  29 class MemcachedPhpBagOStuff extends MemcachedBagOStuff {
  30         /**
  31          * Available parameters are:
  32          *   - servers:             The list of IP:port combinations holding the memcached servers.
  33          *   - debug:               Whether to set the debug flag in the underlying client.
  34          *   - persistent:          Whether to use a persistent connection
  35          *   - compress_threshold:  The minimum size an object must be before it is compressed
  36          *   - timeout:             The read timeout in microseconds
  37          *   - connect_timeout:     The connect timeout in seconds
  38          *
  39          * @param array $params
  40          */
  41         function __construct( $params ) {
  42                 parent::__construct( $params );
  43                 $params = $this->applyDefaultParams( $params );
  44
  45                 $this->client = new MemcachedClient( $params );
  46                 $this->client->set_servers( $params['servers'] );
  47                 $this->client->set_debug( $params['debug'] );
  48         }
  49
  50         public function setDebug( $debug ) {
  51                 $this->client->set_debug( $debug );
  52         }
  53
  54         public function getMulti( array $keys, $flags = 0 ) {
  55                 foreach ( $keys as $key ) {
  56                         $this->validateKeyEncoding( $key );
  57                 }
  58
  59                 return $this->client->get_multi( $keys );
  60         }
  61
  62         public function incr( $key, $value = 1 ) {
  63                 $this->validateKeyEncoding( $key );
  64
  65                 return $this->client->incr( $key, $value );
  66         }
  67
  68         public function decr( $key, $value = 1 ) {
  69                 $this->validateKeyEncoding( $key );
  70
  71                 return $this->client->decr( $key, $value );
  72         }
  73 }