1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_Server

    17  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    18  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    19  * @version    $Id: Cache.php 20096 2010-01-06 02:05:09Z bkarwin $

    20  */

    21 

    22 /**

    23  * Zend_Server_Cache: cache server definitions

    24  *

    25  * @category   Zend

    26  * @package    Zend_Server

    27  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    28  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    29  */

    30 class Zend_Server_Cache

    31 {

    32     /**

    33      * @var array Methods to skip when caching server

    34      */

    35     protected static $_skipMethods = array();

    36 

    37     /**

    38      * Cache a file containing the dispatch list.

    39      *

    40      * Serializes the server definition stores the information

    41      * in $filename.

    42      *

    43      * Returns false on any error (typically, inability to write to file), true

    44      * on success.

    45      *

    46      * @param  string $filename

    47      * @param  Zend_Server_Interface $server

    48      * @return bool

    49      */

    50     public static function save($filename, Zend_Server_Interface $server)

    51     {

    52         if (!is_string($filename)

    53             || (!file_exists($filename) && !is_writable(dirname($filename))))

    54         {

    55             return false;

    56         }

    57 

    58         $methods = $server->getFunctions();

    59 

    60         if ($methods instanceof Zend_Server_Definition) {

    61             $definition = new Zend_Server_Definition();

    62             foreach ($methods as $method) {

    63                 if (in_array($method->getName(), self::$_skipMethods)) {

    64                     continue;

    65                 }

    66                 $definition->addMethod($method);

    67             }

    68             $methods = $definition;

    69         }

    70 

    71         if (0 === @file_put_contents($filename, serialize($methods))) {

    72             return false;

    73         }

    74 

    75         return true;

    76     }

    77 

    78     /**

    79      * Load server definition from a file

    80      *

    81      * Unserializes a stored server definition from $filename. Returns false if

    82      * it fails in any way, true on success.

    83      *

    84      * Useful to prevent needing to build the server definition on each

    85      * request. Sample usage:

    86      *

    87      * <code>

    88      * if (!Zend_Server_Cache::get($filename, $server)) {

    89      *     require_once 'Some/Service/Class.php';

    90      *     require_once 'Another/Service/Class.php';

    91      *

    92      *     // Attach Some_Service_Class with namespace 'some'

    93      *     $server->attach('Some_Service_Class', 'some');

    94      *

    95      *     // Attach Another_Service_Class with namespace 'another'

    96      *     $server->attach('Another_Service_Class', 'another');

    97      *

    98      *     Zend_Server_Cache::save($filename, $server);

    99      * }

   100      *

   101      * $response = $server->handle();

   102      * echo $response;

   103      * </code>

   104      *

   105      * @param  string $filename

   106      * @param  Zend_Server_Interface $server

   107      * @return bool

   108      */

   109     public static function get($filename, Zend_Server_Interface $server)

   110     {

   111         if (!is_string($filename)

   112             || !file_exists($filename)

   113             || !is_readable($filename))

   114         {

   115             return false;

   116         }

   117 

   118 

   119         if (false === ($dispatch = @file_get_contents($filename))) {

   120             return false;

   121         }

   122 

   123         if (false === ($dispatchArray = @unserialize($dispatch))) {

   124             return false;

   125         }

   126 

   127         $server->loadFunctions($dispatchArray);

   128 

   129         return true;

   130     }

   131 

   132     /**

   133      * Remove a cache file

   134      *

   135      * @param  string $filename

   136      * @return boolean

   137      */

   138     public static function delete($filename)

   139     {

   140         if (is_string($filename) && file_exists($filename)) {

   141             unlink($filename);

   142             return true;

   143         }

   144 

   145         return false;

   146     }

   147 }