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   1  <?php
   2  /*
   3   * Limb PHP Framework
   4   *
   5   * @link http://limb-project.com 
   6   * @copyright  Copyright &copy; 2004-2007 BIT(http://bit-creative.com)
   7   * @license    LGPL http://www.gnu.org/copyleft/lesser.html 
   8   */
   9  lmb_require('limb/filter_chain/src/lmbInterceptingFilter.interface.php');
  10  lmb_require('limb/web_cache/src/lmbFullPageCacheRuleset.class.php');
  11  lmb_require('limb/web_cache/src/lmbFullPageCache.class.php');
  12  lmb_require('limb/web_cache/src/lmbFullPageCacheRequest.class.php');
  13  lmb_require('limb/web_cache/src/lmbFullPageCacheUser.class.php');
  14  lmb_require('limb/web_cache/src/lmbFullPageCacheWriter.class.php');
  15  lmb_require('limb/web_cache/src/lmbFullPageCacheIniPolicyLoader.class.php');
  16  
  17  /**

  18   * class lmbFullPageCacheFilter.

  19   *

  20   * @package web_cache

  21   * @version $Id: lmbFullPageCacheFilter.class.php 5945 2007-06-06 08:31:43Z pachanga $

  22   */
  23  class lmbFullPageCacheFilter implements lmbInterceptingFilter
  24  {
  25    protected $user;
  26    protected $cache;
  27    protected $cache_dir;
  28    protected $rules_ini;
  29  
  30    function __construct($rules_ini = 'full_page_cache.ini', $cache_dir = null, $user = null)
  31    {
  32      $this->rules_ini = $rules_ini;
  33  
  34      if(!$cache_dir)
  35        $this->cache_dir = LIMB_VAR_DIR . '/fpcache/';
  36      else
  37        $this->cache_dir = $cache_dir;
  38  
  39      if(!is_object($user))
  40        $this->user = new lmbFullPageCacheUser();
  41      else
  42        $this->user = $user;
  43    }
  44  
  45    function run($filter_chain)
  46    {
  47      $toolkit = lmbToolkit :: instance();
  48      $request = $toolkit->getRequest();
  49  
  50      $this->cache = new lmbFullPageCache($this->_createCacheWriter(),
  51                                          $this->_createCachePolicy());
  52  
  53      $cache_request = new lmbFullPageCacheRequest($request, $this->user);
  54      if(!$this->cache->openSession($cache_request))
  55      {
  56        $filter_chain->next();
  57        return;
  58      }
  59  
  60      $response = $toolkit->getResponse();
  61      if($content = $this->cache->get())
  62      {
  63        $response->write($content);
  64      }
  65      else
  66      {
  67        $filter_chain->next();
  68        $content = $response->getResponseString();
  69        $this->cache->save($content);
  70      }
  71    }
  72  
  73    protected function _createCachePolicy()
  74    {
  75      $loader = new lmbFullPageCacheIniPolicyLoader($this->rules_ini);
  76      return $loader->load();
  77    }
  78  
  79    protected function _createCacheWriter()
  80    {
  81      $writer = new lmbFullPageCacheWriter($this->cache_dir);
  82      return $writer;
  83    }
  84  }
  85  
  86  ?>