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167 lines
5.3 KiB
PHP
167 lines
5.3 KiB
PHP
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<?php
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/**
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* SimplePie
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*
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* A PHP-Based RSS and Atom Feed Framework.
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* Takes the hard work out of managing a complete RSS/Atom solution.
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*
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* Copyright (c) 2004-2016, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* * Neither the name of the SimplePie Team nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
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* AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package SimplePie
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* @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue
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* @author Ryan Parman
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* @author Sam Sneddon
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* @author Ryan McCue
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* @link http://simplepie.org/ SimplePie
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License
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*/
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/**
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* Caches data to memcached
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*
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* Registered for URLs with the "memcached" protocol
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*
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* For example, `memcached://localhost:11211/?timeout=3600&prefix=sp_` will
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* connect to memcached on `localhost` on port 11211. All tables will be
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* prefixed with `sp_` and data will expire after 3600 seconds
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*
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* @package SimplePie
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* @subpackage Caching
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* @author Paul L. McNeely
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* @uses Memcached
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*/
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class SimplePie_Cache_Memcached implements SimplePie_Cache_Base
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{
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/**
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* Memcached instance
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* @var Memcached
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*/
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protected $cache;
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/**
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* Options
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* @var array
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*/
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protected $options;
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/**
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* Cache name
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* @var string
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*/
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protected $name;
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/**
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* Create a new cache object
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* @param string $location Location string (from SimplePie::$cache_location)
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* @param string $name Unique ID for the cache
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* @param string $type Either TYPE_FEED for SimplePie data, or TYPE_IMAGE for image data
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*/
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public function __construct($location, $name, $type) {
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$this->options = array(
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'host' => '127.0.0.1',
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'port' => 11211,
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'extras' => array(
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'timeout' => 3600, // one hour
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'prefix' => 'simplepie_',
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),
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);
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$this->options = SimplePie_Misc::array_merge_recursive($this->options, SimplePie_Cache::parse_URL($location));
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$this->name = $this->options['extras']['prefix'] . md5("$name:$type");
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$this->cache = new Memcached();
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$this->cache->addServer($this->options['host'], (int)$this->options['port']);
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}
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/**
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* Save data to the cache
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* @param array|SimplePie $data Data to store in the cache. If passed a SimplePie object, only cache the $data property
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* @return bool Successfulness
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*/
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public function save($data) {
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if ($data instanceof SimplePie) {
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$data = $data->data;
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}
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return $this->setData(serialize($data));
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}
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/**
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* Retrieve the data saved to the cache
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* @return array Data for SimplePie::$data
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*/
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public function load() {
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$data = $this->cache->get($this->name);
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if ($data !== false) {
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return unserialize($data);
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}
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return false;
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}
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/**
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* Retrieve the last modified time for the cache
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* @return int Timestamp
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*/
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public function mtime() {
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$data = $this->cache->get($this->name . '_mtime');
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return (int) $data;
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}
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/**
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* Set the last modified time to the current time
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* @return bool Success status
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*/
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public function touch() {
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$data = $this->cache->get($this->name);
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return $this->setData($data);
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}
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/**
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* Remove the cache
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* @return bool Success status
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*/
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public function unlink() {
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return $this->cache->delete($this->name, 0);
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}
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/**
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* Set the last modified time and data to Memcached
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* @return bool Success status
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*/
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private function setData($data) {
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if ($data !== false) {
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$this->cache->set($this->name . '_mtime', time(), (int)$this->options['extras']['timeout']);
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return $this->cache->set($this->name, $data, (int)$this->options['extras']['timeout']);
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}
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return false;
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}
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}
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