71 lines
1.8 KiB
PHP
71 lines
1.8 KiB
PHP
|
<?php
|
||
|
|
/*
|
||
|
|
* Copyright 2010 Google Inc.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* A persistent storage class based on the APC cache, which is not
|
||
|
|
* really very persistent, as soon as you restart your web server
|
||
|
|
* the storage will be wiped, however for debugging and/or speed
|
||
|
|
* it can be useful, and cache is a lot cheaper then storage.
|
||
|
|
*
|
||
|
|
* @author Chris Chabot <chabotc@google.com>
|
||
|
|
*/
|
||
|
|
class W3TCG_Google_Cache_Apc extends W3TCG_Google_Cache_Abstract
|
||
|
|
{
|
||
|
|
public function __construct(W3TCG_Google_Client $client)
|
||
|
|
{
|
||
|
|
if (! function_exists('apc_add') ) {
|
||
|
|
throw new W3TCG_Google_Cache_Exception("Apc functions not available");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @inheritDoc
|
||
|
|
*/
|
||
|
|
public function get($key, $expiration = false)
|
||
|
|
{
|
||
|
|
$ret = apc_fetch($key);
|
||
|
|
if ($ret === false) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (is_numeric($expiration) && (time() - $ret['time'] > $expiration)) {
|
||
|
|
$this->delete($key);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return $ret['data'];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @inheritDoc
|
||
|
|
*/
|
||
|
|
public function set($key, $value)
|
||
|
|
{
|
||
|
|
$rc = apc_store($key, array('time' => time(), 'data' => $value));
|
||
|
|
if ($rc == false) {
|
||
|
|
throw new W3TCG_Google_Cache_Exception("Couldn't store data");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @inheritDoc
|
||
|
|
* @param String $key
|
||
|
|
*/
|
||
|
|
public function delete($key)
|
||
|
|
{
|
||
|
|
apc_delete($key);
|
||
|
|
}
|
||
|
|
}
|