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<?php
/**
* Dklab_Cache_Backend_Profiler: wrapper for backend statistics counting.
*
* Calls $incrementor each time the code invokes a backend call.
* This class may be used in debugging purposes.
*
* $Id$
*/
require_once LS_DKCACHE_PATH."Zend/Cache/Backend/Interface.php";
class Dklab_Cache_Backend_Profiler implements Zend_Cache_Backend_Interface
{
private $_backend = null;
private $_incrementor = null;
public function __construct(Zend_Cache_Backend_Interface $backend, $incrementor)
{
$this->_backend = $backend;
$this->_incrementor = $incrementor;
}
public function setDirectives($directives)
{
return $this->_backend->setDirectives($directives);
}
public function load($id, $doNotTestCacheValidity = false)
{
$t0 = microtime(true);
$result = $this->_backend->load($id, $doNotTestCacheValidity);
call_user_func($this->_incrementor, microtime(true) - $t0, __METHOD__, $id);
return $result;
}
public function multiLoad($ids, $doNotTestCacheValidity = false)
{
if (!is_array($ids)) {
Zend_Cache::throwException('multiLoad() expects parameter 1 to be array, ' . gettype($ids) . ' given');
}
if (method_exists($this->_backend, 'multiLoad')) {
$t0 = microtime(true);
$result = $this->_backend->multiLoad($ids, $doNotTestCacheValidity);
call_user_func($this->_incrementor, microtime(true) - $t0, __METHOD__, $ids);
return $result;
}
// No multiLoad() method avalilable, so we have to emulate it to keep
// the interface consistent.
$result = array();
foreach ($ids as $i => $id) {
$result[$id] = $this->load($id, $doNotTestCacheValidity);
}
return $result;
}
public function test($id)
{
$t0 = microtime(true);
$result = $this->_backend->test($id);
call_user_func($this->_incrementor, microtime(true) - $t0, __METHOD__, $id);
return $result;
}
public function save($data, $id, $tags = array(), $specificLifetime = false)
{
$t0 = microtime(true);
$result = $this->_backend->save($data, $id, $tags, $specificLifetime);
call_user_func($this->_incrementor, microtime(true) - $t0, __METHOD__, $id);
return $result;
}
public function remove($id)
{
$t0 = microtime(true);
$result = $this->_backend->remove($id);
call_user_func($this->_incrementor, microtime(true) - $t0, __METHOD__, $id);
return $result;
}
public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
{
$t0 = microtime(true);
$result = $this->_backend->clean($mode, $tags);
call_user_func($this->_incrementor, microtime(true) - $t0, __METHOD__, null);
return $result;
}
}