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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Cache
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/** @see Zend_Cache_Exception */
// require_once 'Zend/Cache/Exception.php';
/** @see Zend_Cache */
// require_once 'Zend/Cache.php';
/**
* @category Zend
* @package Zend_Cache
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Cache_Manager
{
/**
* Constant holding reserved name for default Page Cache
*/
const PAGECACHE = 'page';
/**
* Constant holding reserved name for default Page Tag Cache
*/
const PAGETAGCACHE = 'pagetag';
/**
* Array of caches stored by the Cache Manager instance
*
* @var array
*/
protected $_caches = array();
/**
* Array of ready made configuration templates for lazy
* loading caches.
*
* @var array
*/
protected $_optionTemplates = array(
// Null Cache (Enforce Null/Empty Values)
'skeleton' => array(
'frontend' => array(
'name' => null,
'options' => array(),
),
'backend' => array(
'name' => null,
'options' => array(),
),
),
// Simple Common Default
'default' => array(
'frontend' => array(
'name' => 'Core',
'options' => array(
'automatic_serialization' => true,
),
),
'backend' => array(
'name' => 'File',
'options' => array(
'cache_dir' => '../cache',
),
),
),
// Static Page HTML Cache
'page' => array(
'frontend' => array(
'name' => 'Capture',
'options' => array(
'ignore_user_abort' => true,
),
),
'backend' => array(
'name' => 'Static',
'options' => array(
'public_dir' => '../public',
),
),
),
// Tag Cache
'pagetag' => array(
'frontend' => array(
'name' => 'Core',
'options' => array(
'automatic_serialization' => true,
'lifetime' => null
),
),
'backend' => array(
'name' => 'File',
'options' => array(
'cache_dir' => '../cache',
'cache_file_umask' => 0644
),
),
),
);
/**
* Set a new cache for the Cache Manager to contain
*
* @param string $name
* @param Zend_Cache_Core $cache
* @return Zend_Cache_Manager
*/
public function setCache($name, Zend_Cache_Core $cache)
{
$this->_caches[$name] = $cache;
return $this;
}
/**
* Check if the Cache Manager contains the named cache object, or a named
* configuration template to lazy load the cache object
*
* @param string $name
* @return bool
*/
public function hasCache($name)
{
if (isset($this->_caches[$name])
|| $this->hasCacheTemplate($name)
) {
return true;
}
return false;
}
/**
* Fetch the named cache object, or instantiate and return a cache object
* using a named configuration template
*
* @param string $name
* @return Zend_Cache_Core
*/
public function getCache($name)
{
if (isset($this->_caches[$name])) {
return $this->_caches[$name];
}
if (isset($this->_optionTemplates[$name])) {
if ($name == self::PAGECACHE
&& (!isset($this->_optionTemplates[$name]['backend']['options']['tag_cache'])
|| !$this->_optionTemplates[$name]['backend']['options']['tag_cache'] instanceof Zend_Cache_Core)
) {
$this->_optionTemplates[$name]['backend']['options']['tag_cache']
= $this->getCache(self::PAGETAGCACHE);
}
$this->_caches[$name] = Zend_Cache::factory(
$this->_optionTemplates[$name]['frontend']['name'],
$this->_optionTemplates[$name]['backend']['name'],
isset($this->_optionTemplates[$name]['frontend']['options']) ? $this->_optionTemplates[$name]['frontend']['options'] : array(),
isset($this->_optionTemplates[$name]['backend']['options']) ? $this->_optionTemplates[$name]['backend']['options'] : array(),
isset($this->_optionTemplates[$name]['frontend']['customFrontendNaming']) ? $this->_optionTemplates[$name]['frontend']['customFrontendNaming'] : false,
isset($this->_optionTemplates[$name]['backend']['customBackendNaming']) ? $this->_optionTemplates[$name]['backend']['customBackendNaming'] : false,
isset($this->_optionTemplates[$name]['frontendBackendAutoload']) ? $this->_optionTemplates[$name]['frontendBackendAutoload'] : false
);
return $this->_caches[$name];
}
}
/**
* Set a named configuration template from which a cache object can later
* be lazy loaded
*
* @param string $name
* @param array $options
* @return Zend_Cache_Manager
*/
public function setCacheTemplate($name, $options)
{
if ($options instanceof Zend_Config) {
$options = $options->toArray();
} elseif (!is_array($options)) {
// require_once 'Zend/Cache/Exception.php';
throw new Zend_Cache_Exception('Options passed must be in'
. ' an associative array or instance of Zend_Config');
}
$this->_optionTemplates[$name] = $options;
return $this;
}
/**
* Check if the named configuration template
*
* @param string $name
* @return bool
*/
public function hasCacheTemplate($name)
{
if (isset($this->_optionTemplates[$name])) {
return true;
}
return false;
}
/**
* Get the named configuration template
*
* @param string $name
* @return array
*/
public function getCacheTemplate($name)
{
if (isset($this->_optionTemplates[$name])) {
return $this->_optionTemplates[$name];
}
}
/**
* Pass an array containing changes to be applied to a named
* configuration
* template
*
* @param string $name
* @param array $options
* @return Zend_Cache_Manager
* @throws Zend_Cache_Exception for invalid options format or if option templates do not have $name
*/
public function setTemplateOptions($name, $options)
{
if ($options instanceof Zend_Config) {
$options = $options->toArray();
} elseif (!is_array($options)) {
// require_once 'Zend/Cache/Exception.php';
throw new Zend_Cache_Exception('Options passed must be in'
. ' an associative array or instance of Zend_Config');
}
if (!isset($this->_optionTemplates[$name])) {
throw new Zend_Cache_Exception('A cache configuration template'
. 'does not exist with the name "' . $name . '"');
}
$this->_optionTemplates[$name]
= $this->_mergeOptions($this->_optionTemplates[$name], $options);
return $this;
}
/**
* Simple method to merge two configuration arrays
*
* @param array $current
* @param array $options
* @return array
*/
protected function _mergeOptions(array $current, array $options)
{
if (isset($options['frontend']['name'])) {
$current['frontend']['name'] = $options['frontend']['name'];
}
if (isset($options['backend']['name'])) {
$current['backend']['name'] = $options['backend']['name'];
}
if (isset($options['frontend']['options'])) {
foreach ($options['frontend']['options'] as $key=>$value) {
$current['frontend']['options'][$key] = $value;
}
}
if (isset($options['backend']['options'])) {
foreach ($options['backend']['options'] as $key=>$value) {
$current['backend']['options'][$key] = $value;
}
}
return $current;
}
}
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