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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Cache\Backend\Decorator;
/**
* Abstract decorator class for \Zend_Cache_Backend class and its descendants
*/
abstract class AbstractDecorator extends \Zend_Cache_Backend implements \Zend_Cache_Backend_ExtendedInterface
{
/**
* Concrete Cache Backend class that is being decorated
* @var \Zend_Cache_Backend
*/
protected $_backend;
/**
* Array of specific options. Made in separate array to distinguish from parent options
* @var array
*/
protected $_decoratorOptions = [];
/**
* @param array $options
*/
public function __construct(array $options = [])
{
if (array_key_exists(
'concrete_backend',
$options
) && $options['concrete_backend'] instanceof \Zend_Cache_Backend_Interface
) {
$this->_backend = $options['concrete_backend'];
unset($options['concrete_backend']);
} else {
\Zend_Cache::throwException(
"'concrete_backend' is not specified or it does not implement 'Zend_Cache_Backend_Interface' interface"
);
}
foreach ($options as $optionName => $optionValue) {
if (array_key_exists($optionName, $this->_decoratorOptions)) {
$this->_decoratorOptions[$optionName] = $optionValue;
}
}
}
/**
* Set the frontend directives
*
* @param array $directives assoc of directives
* @return void
*/
public function setDirectives($directives)
{
$this->_backend->setDirectives($directives);
}
/**
* Test if a cache is available for the given id and (if yes) return it (false else)
*
* Note : return value is always "string" (unserialization is done by the core not by the backend)
*
* @param string $cacheId Cache id
* @param boolean $noTestCacheValidity If set to true, the cache validity won't be tested
* @return string|false cached datas
*/
public function load($cacheId, $noTestCacheValidity = false)
{
return $this->_backend->load($cacheId, $noTestCacheValidity);
}
/**
* Test if a cache is available or not (for the given id)
*
* @param string $cacheId cache id
* @return mixed|false (a cache is not available) or "last modified" timestamp (int) of the available cache record
*/
public function test($cacheId)
{
return $this->_backend->test($cacheId);
}
/**
* Save some string datas into a cache record
*
* Note : $data is always "string" (serialization is done by the
* core not by the backend)
*
* @param string $data Datas to cache
* @param string $cacheId Cache id
* @param string[] $tags Array of strings, the cache record will be tagged by each string entry
* @param bool $specificLifetime If != false, set a specific lifetime for this cache record
* (null => infinite lifetime)
* @param int $priority integer between 0 (very low priority) and 10 (maximum priority) used by
* some particular backends
* @return bool true if no problem
*/
public function save($data, $cacheId, $tags = [], $specificLifetime = false, $priority = 8)
{
return $this->_backend->save($data, $cacheId, $tags, $specificLifetime, $priority);
}
/**
* Remove a cache record
*
* @param string $cacheId Cache id
* @return bool true if no problem
*/
public function remove($cacheId)
{
return $this->_backend->remove($cacheId);
}
/**
* Clean some cache records
*
* Available modes are :
* \Zend_Cache::CLEANING_MODE_ALL (default) => remove all cache entries ($tags is not used)
* \Zend_Cache::CLEANING_MODE_OLD => remove too old cache entries ($tags is not used)
* \Zend_Cache::CLEANING_MODE_MATCHING_TAG => remove cache entries matching all given tags
* ($tags can be an array of strings or a single string)
* \Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG => remove cache entries not {matching one of the given tags}
* ($tags can be an array of strings or a single string)
* \Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG => remove cache entries matching any given tags
* ($tags can be an array of strings or a single string)
*
* @param string $mode Clean mode
* @param string[] $tags Array of tags
* @return bool true if no problem
*/
public function clean($mode = \Zend_Cache::CLEANING_MODE_ALL, $tags = [])
{
return $this->_backend->clean($mode, $tags);
}
/**
* Return an array of stored cache ids
*
* @return string[] array of stored cache ids (string)
*/
public function getIds()
{
return $this->_backend->getIds();
}
/**
* Return an array of stored tags
*
* @return string[] array of stored tags (string)
*/
public function getTags()
{
return $this->_backend->getTags();
}
/**
* Return an array of stored cache ids which match given tags
*
* In case of multiple tags, a logical AND is made between tags
*
* @param string[] $tags array of tags
* @return string[] array of matching cache ids (string)
*/
public function getIdsMatchingTags($tags = [])
{
return $this->_backend->getIdsMatchingTags($tags);
}
/**
* Return an array of stored cache ids which don't match given tags
*
* In case of multiple tags, a logical OR is made between tags
*
* @param string[] $tags array of tags
* @return string[] array of not matching cache ids (string)
*/
public function getIdsNotMatchingTags($tags = [])
{
return $this->_backend->getIdsNotMatchingTags($tags);
}
/**
* Return an array of stored cache ids which match any given tags
*
* In case of multiple tags, a logical AND is made between tags
*
* @param string[] $tags array of tags
* @return string[] array of any matching cache ids (string)
*/
public function getIdsMatchingAnyTags($tags = [])
{
return $this->_backend->getIdsMatchingAnyTags($tags);
}
/**
* Return the filling percentage of the backend storage
*
* @return int integer between 0 and 100
*/
public function getFillingPercentage()
{
return $this->_backend->getFillingPercentage();
}
/**
* Return an array of metadatas for the given cache id
*
* The array must include these keys :
* - expire : the expire timestamp
* - tags : a string array of tags
* - mtime : timestamp of last modification time
*
* @param string $cacheId cache id
* @return array|bool array of metadatas (false if the cache id is not found)
*/
public function getMetadatas($cacheId)
{
return $this->_backend->getMetadatas($cacheId);
}
/**
* Give (if possible) an extra lifetime to the given cache id
*
* @param string $cacheId cache id
* @param int $extraLifetime
* @return boolean true if ok
*/
public function touch($cacheId, $extraLifetime)
{
return $this->_backend->touch($cacheId, $extraLifetime);
}
/**
* Return an associative array of capabilities (booleans) of the backend
*
* The array must include these keys :
* - automatic_cleaning (is automating cleaning necessary)
* - tags (are tags supported)
* - expired_read (is it possible to read expired cache records
* (for doNotTestCacheValidity option for example))
* - priority does the backend deal with priority when saving
* - infinite_lifetime (is infinite lifetime can work with this backend)
* - get_list (is it possible to get the list of cache ids and the complete list of tags)
*
* @return array associative of with capabilities
*/
public function getCapabilities()
{
return $this->_backend->getCapabilities();
}
/**
* Set an option
*
* @param string $name
* @param mixed $value
* @throws \Zend_Cache_Exception
* @return void
*/
public function setOption($name, $value)
{
$this->_backend->setOption($name, $value);
}
/**
* Get the life time
*
* if $specificLifetime is not false, the given specific life time is used
* else, the global lifetime is used
*
* @param int $specificLifetime
* @return int Cache life time
*/
public function getLifetime($specificLifetime)
{
return $this->_backend->getLifetime($specificLifetime);
}
/**
* Determine system TMP directory and detect if we have read access
*
* inspired from \Zend_File_Transfer_Adapter_Abstract
*
* @return string
* @throws \Zend_Cache_Exception if unable to determine directory
*/
public function getTmpDir()
{
return $this->_backend->getTmpDir();
}
}