includes/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         /**
  32          * Constructor.
  33          *
  34          * Available parameters are:
  35          *   - servers:             The list of IP:port combinations holding the memcached servers.
  36          *   - debug:               Whether to set the debug flag in the underlying client.
  37          *   - persistent:          Whether to use a persistent connection
  38          *   - compress_threshold:  The minimum size an object must be before it is compressed
  39          *   - timeout:             The read timeout in microseconds
  40          *   - connect_timeout:     The connect timeout in seconds
  41          *
  42          * @param array $params
  43          */
  44         function __construct( $params ) {
  45                 parent::__construct( $params );
  46                 $params = $this->applyDefaultParams( $params );
  47
  48                 $this->client = new MemCachedClientforWiki( $params );
  49                 $this->client->set_servers( $params['servers'] );
  50                 $this->client->set_debug( $params['debug'] );
  51         }
  52
  53         /**
  54          * @param bool $debug
  55          */
  56         public function setDebug( $debug ) {
  57                 $this->client->set_debug( $debug );
  58         }
  59
  60         public function getMulti( array $keys, $flags = 0 ) {
  61                 $callback = array( $this, 'encodeKey' );
  62                 $encodedResult = $this->client->get_multi( array_map( $callback, $keys ) );
  63                 $result = array();
  64                 foreach ( $encodedResult as $key => $value ) {
  65                         $key = $this->decodeKey( $key );
  66                         $result[$key] = $value;
  67                 }
  68                 return $result;
  69         }
  70
  71         /**
  72          * @param string $key
  73          * @param int $value
  74          * @return mixed
  75          */
  76         public function incr( $key, $value = 1 ) {
  77                 return $this->client->incr( $this->encodeKey( $key ), $value );
  78         }
  79
  80         /**
  81          * @param string $key
  82          * @param int $value
  83          * @return mixed
  84          */
  85         public function decr( $key, $value = 1 ) {
  86                 return $this->client->decr( $this->encodeKey( $key ), $value );
  87         }
  88 }