--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Cache/Backend/ZendPlatform.php Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,317 @@
+<?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
+ * @subpackage Zend_Cache_Backend
+ * @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: ZendPlatform.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+/**
+ * @see Zend_Cache_Backend_Interface
+ */
+require_once 'Zend/Cache/Backend.php';
+
+/**
+ * @see Zend_Cache_Backend_Interface
+ */
+require_once 'Zend/Cache/Backend/Interface.php';
+
+
+/**
+ * Impementation of Zend Cache Backend using the Zend Platform (Output Content Caching)
+ *
+ * @package Zend_Cache
+ * @subpackage Zend_Cache_Backend
+ * @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_Backend_ZendPlatform extends Zend_Cache_Backend implements Zend_Cache_Backend_Interface
+{
+ /**
+ * internal ZP prefix
+ */
+ const TAGS_PREFIX = "internal_ZPtag:";
+
+ /**
+ * Constructor
+ * Validate that the Zend Platform is loaded and licensed
+ *
+ * @param array $options Associative array of options
+ * @throws Zend_Cache_Exception
+ * @return void
+ */
+ public function __construct(array $options = array())
+ {
+ if (!function_exists('accelerator_license_info')) {
+ Zend_Cache::throwException('The Zend Platform extension must be loaded for using this backend !');
+ }
+ if (!function_exists('accelerator_get_configuration')) {
+ $licenseInfo = accelerator_license_info();
+ Zend_Cache::throwException('The Zend Platform extension is not loaded correctly: '.$licenseInfo['failure_reason']);
+ }
+ $accConf = accelerator_get_configuration();
+ if (@!$accConf['output_cache_licensed']) {
+ Zend_Cache::throwException('The Zend Platform extension does not have the proper license to use content caching features');
+ }
+ if (@!$accConf['output_cache_enabled']) {
+ Zend_Cache::throwException('The Zend Platform content caching feature must be enabled for using this backend, set the \'zend_accelerator.output_cache_enabled\' directive to On !');
+ }
+ if (!is_writable($accConf['output_cache_dir'])) {
+ Zend_Cache::throwException('The cache copies directory \''. ini_get('zend_accelerator.output_cache_dir') .'\' must be writable !');
+ }
+ parent:: __construct($options);
+ }
+
+ /**
+ * Test if a cache is available for the given id and (if yes) return it (false else)
+ *
+ * @param string $id Cache id
+ * @param boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested
+ * @return string Cached data (or false)
+ */
+ public function load($id, $doNotTestCacheValidity = false)
+ {
+ // doNotTestCacheValidity implemented by giving zero lifetime to the cache
+ if ($doNotTestCacheValidity) {
+ $lifetime = 0;
+ } else {
+ $lifetime = $this->_directives['lifetime'];
+ }
+ $res = output_cache_get($id, $lifetime);
+ if($res) {
+ return $res[0];
+ } else {
+ return false;
+ }
+ }
+
+
+ /**
+ * Test if a cache is available or not (for the given id)
+ *
+ * @param string $id Cache id
+ * @return mixed|false false (a cache is not available) or "last modified" timestamp (int) of the available cache record
+ */
+ public function test($id)
+ {
+ $result = output_cache_get($id, $this->_directives['lifetime']);
+ if ($result) {
+ return $result[1];
+ }
+ return false;
+ }
+
+ /**
+ * 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 Data to cache
+ * @param string $id Cache id
+ * @param array $tags Array of strings, the cache record will be tagged by each string entry
+ * @param int $specificLifetime If != false, set a specific lifetime for this cache record (null => infinite lifetime)
+ * @return boolean true if no problem
+ */
+ public function save($data, $id, $tags = array(), $specificLifetime = false)
+ {
+ if (!($specificLifetime === false)) {
+ $this->_log("Zend_Cache_Backend_ZendPlatform::save() : non false specifc lifetime is unsuported for this backend");
+ }
+
+ $lifetime = $this->_directives['lifetime'];
+ $result1 = output_cache_put($id, array($data, time()));
+ $result2 = (count($tags) == 0);
+
+ foreach ($tags as $tag) {
+ $tagid = self::TAGS_PREFIX.$tag;
+ $old_tags = output_cache_get($tagid, $lifetime);
+ if ($old_tags === false) {
+ $old_tags = array();
+ }
+ $old_tags[$id] = $id;
+ output_cache_remove_key($tagid);
+ $result2 = output_cache_put($tagid, $old_tags);
+ }
+
+ return $result1 && $result2;
+ }
+
+
+ /**
+ * Remove a cache record
+ *
+ * @param string $id Cache id
+ * @return boolean True if no problem
+ */
+ public function remove($id)
+ {
+ return output_cache_remove_key($id);
+ }
+
+
+ /**
+ * Clean some cache records
+ *
+ * Available modes are :
+ * Zend_Cache::CLEANING_MODE_ALL (default) => remove all cache entries ($tags is not used)
+ * Zend_Cache::CLEANING_MODE_OLD => remove too old cache entries ($tags is not used)
+ * This mode is not supported in this backend
+ * Zend_Cache::CLEANING_MODE_MATCHING_TAG => remove cache entries matching all given tags
+ * ($tags can be an array of strings or a single string)
+ * Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG => unsupported
+ * 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 array $tags Array of tags
+ * @throws Zend_Cache_Exception
+ * @return boolean True if no problem
+ */
+ public function clean($mode = Zend_Cache::CLEANING_MODE_ALL, $tags = array())
+ {
+ switch ($mode) {
+ case Zend_Cache::CLEANING_MODE_ALL:
+ case Zend_Cache::CLEANING_MODE_OLD:
+ $cache_dir = ini_get('zend_accelerator.output_cache_dir');
+ if (!$cache_dir) {
+ return false;
+ }
+ $cache_dir .= '/.php_cache_api/';
+ return $this->_clean($cache_dir, $mode);
+ break;
+ case Zend_Cache::CLEANING_MODE_MATCHING_TAG:
+ $idlist = null;
+ foreach ($tags as $tag) {
+ $next_idlist = output_cache_get(self::TAGS_PREFIX.$tag, $this->_directives['lifetime']);
+ if ($idlist) {
+ $idlist = array_intersect_assoc($idlist, $next_idlist);
+ } else {
+ $idlist = $next_idlist;
+ }
+ if (count($idlist) == 0) {
+ // if ID list is already empty - we may skip checking other IDs
+ $idlist = null;
+ break;
+ }
+ }
+ if ($idlist) {
+ foreach ($idlist as $id) {
+ output_cache_remove_key($id);
+ }
+ }
+ return true;
+ break;
+ case Zend_Cache::CLEANING_MODE_NOT_MATCHING_TAG:
+ $this->_log("Zend_Cache_Backend_ZendPlatform::clean() : CLEANING_MODE_NOT_MATCHING_TAG is not supported by the Zend Platform backend");
+ return false;
+ break;
+ case Zend_Cache::CLEANING_MODE_MATCHING_ANY_TAG:
+ $idlist = null;
+ foreach ($tags as $tag) {
+ $next_idlist = output_cache_get(self::TAGS_PREFIX.$tag, $this->_directives['lifetime']);
+ if ($idlist) {
+ $idlist = array_merge_recursive($idlist, $next_idlist);
+ } else {
+ $idlist = $next_idlist;
+ }
+ if (count($idlist) == 0) {
+ // if ID list is already empty - we may skip checking other IDs
+ $idlist = null;
+ break;
+ }
+ }
+ if ($idlist) {
+ foreach ($idlist as $id) {
+ output_cache_remove_key($id);
+ }
+ }
+ return true;
+ break;
+ default:
+ Zend_Cache::throwException('Invalid mode for clean() method');
+ break;
+ }
+ }
+
+ /**
+ * Clean a directory and recursivly go over it's subdirectories
+ *
+ * Remove all the cached files that need to be cleaned (according to mode and files mtime)
+ *
+ * @param string $dir Path of directory ot clean
+ * @param string $mode The same parameter as in Zend_Cache_Backend_ZendPlatform::clean()
+ * @return boolean True if ok
+ */
+ private function _clean($dir, $mode)
+ {
+ $d = @dir($dir);
+ if (!$d) {
+ return false;
+ }
+ $result = true;
+ while (false !== ($file = $d->read())) {
+ if ($file == '.' || $file == '..') {
+ continue;
+ }
+ $file = $d->path . $file;
+ if (is_dir($file)) {
+ $result = ($this->_clean($file .'/', $mode)) && ($result);
+ } else {
+ if ($mode == Zend_Cache::CLEANING_MODE_ALL) {
+ $result = ($this->_remove($file)) && ($result);
+ } else if ($mode == Zend_Cache::CLEANING_MODE_OLD) {
+ // Files older than lifetime get deleted from cache
+ if ($this->_directives['lifetime'] !== null) {
+ if ((time() - @filemtime($file)) > $this->_directives['lifetime']) {
+ $result = ($this->_remove($file)) && ($result);
+ }
+ }
+ }
+ }
+ }
+ $d->close();
+ return $result;
+ }
+
+ /**
+ * Remove a file
+ *
+ * If we can't remove the file (because of locks or any problem), we will touch
+ * the file to invalidate it
+ *
+ * @param string $file Complete file path
+ * @return boolean True if ok
+ */
+ private function _remove($file)
+ {
+ if (!@unlink($file)) {
+ # If we can't remove the file (because of locks or any problem), we will touch
+ # the file to invalidate it
+ $this->_log("Zend_Cache_Backend_ZendPlatform::_remove() : we can't remove $file => we are going to try to invalidate it");
+ if ($this->_directives['lifetime'] === null) {
+ return false;
+ }
+ if (!file_exists($file)) {
+ return false;
+ }
+ return @touch($file, time() - 2*abs($this->_directives['lifetime']));
+ }
+ return true;
+ }
+
+}