MemcachedBagOStuff.php

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<?php
class MemcachedBagOStuff extends BagOStuff {
    protected $client;

    protected function applyDefaultParams( $params ) {
        if ( !isset( $params['servers'] ) ) {
            $params['servers'] = $GLOBALS['wgMemCachedServers'];
        }
        if ( !isset( $params['debug'] ) ) {
            $params['debug'] = $GLOBALS['wgMemCachedDebug'];
        }
        if ( !isset( $params['persistent'] ) ) {
            $params['persistent'] = $GLOBALS['wgMemCachedPersistent'];
        }
        if ( !isset( $params['compress_threshold'] ) ) {
            $params['compress_threshold'] = 1500;
        }
        if ( !isset( $params['timeout'] ) ) {
            $params['timeout'] = $GLOBALS['wgMemCachedTimeout'];
        }
        if ( !isset( $params['connect_timeout'] ) ) {
            $params['connect_timeout'] = 0.5;
        }
        return $params;
    }

    public function get( $key, &$casToken = null ) {
        return $this->client->get( $this->encodeKey( $key ), $casToken );
    }

    public function set( $key, $value, $exptime = 0 ) {
        return $this->client->set( $this->encodeKey( $key ), $value,
            $this->fixExpiry( $exptime ) );
    }

    public function cas( $casToken, $key, $value, $exptime = 0 ) {
        return $this->client->cas( $casToken, $this->encodeKey( $key ),
            $value, $this->fixExpiry( $exptime ) );
    }

    public function delete( $key, $time = 0 ) {
        return $this->client->delete( $this->encodeKey( $key ), $time );
    }

    public function add( $key, $value, $exptime = 0 ) {
        return $this->client->add( $this->encodeKey( $key ), $value,
            $this->fixExpiry( $exptime ) );
    }

    public function replace( $key, $value, $exptime = 0 ) {
        return $this->client->replace( $this->encodeKey( $key ), $value,
            $this->fixExpiry( $exptime ) );
    }

    public function getClient() {
        return $this->client;
    }

    public function encodeKey( $key ) {
        return preg_replace_callback( '/[\x00-\x20\x25\x7f]+/',
            array( $this, 'encodeKeyCallback' ), $key );
    }

    protected function encodeKeyCallback( $m ) {
        return rawurlencode( $m[0] );
    }

    function fixExpiry( $expiry ) {
        if ( $expiry > 2592000 && $expiry < 1000000000 ) {
            $expiry = 2592000;
        }
        return $expiry;
    }

    public function decodeKey( $key ) {
        return urldecode( $key );
    }

    protected function debugLog( $text ) {
        if ( substr( $text, -1 ) !== "\n" ) {
            $text .= "\n";
        }
        wfDebugLog( 'memcached', $text );
    }
}