web/Zend/Service/WindowsAzure/SessionHandler.php
changeset 0 4eba9c11703f
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Service/WindowsAzure/SessionHandler.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,217 @@
+<?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_Service_WindowsAzure
+ * @subpackage Session
+ * @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: SessionHandler.php 20785 2010-01-31 09:43:03Z mikaelkael $
+ */
+
+/** Zend_Service_WindowsAzure_Storage_Table */
+require_once 'Zend/Service/WindowsAzure/Storage/Table.php';
+
+/**
+ * @see Zend_Service_WindowsAzure_Exception
+ */
+require_once 'Zend/Service/WindowsAzure/Exception.php';
+
+/**
+ * @category   Zend
+ * @package    Zend_Service_WindowsAzure
+ * @subpackage Session
+ * @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_Service_WindowsAzure_SessionHandler
+{
+    /**
+     * Table storage
+     * 
+     * @var Zend_Service_WindowsAzure_Storage_Table
+     */
+    protected $_tableStorage;
+    
+    /**
+     * Session table name
+     * 
+     * @var string
+     */
+    protected $_sessionTable;
+    
+    /**
+     * Session table partition
+     * 
+     * @var string
+     */
+    protected $_sessionTablePartition;
+	
+    /**
+     * Creates a new Zend_Service_WindowsAzure_SessionHandler instance
+     * 
+     * @param Zend_Service_WindowsAzure_Storage_Table $tableStorage Table storage
+     * @param string $sessionTable Session table name
+     * @param string $sessionTablePartition Session table partition
+     */
+    public function __construct(Zend_Service_WindowsAzure_Storage_Table $tableStorage, $sessionTable = 'phpsessions', $sessionTablePartition = 'sessions')
+	{
+	    // Set properties
+		$this->_tableStorage = $tableStorage;
+		$this->_sessionTable = $sessionTable;
+		$this->_sessionTablePartition = $sessionTablePartition;
+	}
+	
+	/**
+	 * Registers the current session handler as PHP's session handler
+	 * 
+	 * @return boolean
+	 */
+	public function register()
+	{
+        return session_set_save_handler(array($this, 'open'),
+                                        array($this, 'close'),
+                                        array($this, 'read'),
+                                        array($this, 'write'),
+                                        array($this, 'destroy'),
+                                        array($this, 'gc')
+        );
+	}
+	
+    /**
+     * Open the session store
+     * 
+     * @return bool
+     */
+    public function open()
+    {
+    	// Make sure table exists
+    	$tableExists = $this->_tableStorage->tableExists($this->_sessionTable);
+    	if (!$tableExists) {
+		    $this->_tableStorage->createTable($this->_sessionTable);
+		}
+		
+		// Ok!
+		return true;
+    }
+
+    /**
+     * Close the session store
+     * 
+     * @return bool
+     */
+    public function close()
+    {
+        return true;
+    }
+    
+    /**
+     * Read a specific session
+     * 
+     * @param int $id Session Id
+     * @return string
+     */
+    public function read($id)
+    {
+        try
+        {
+            $sessionRecord = $this->_tableStorage->retrieveEntityById(
+                $this->_sessionTable,
+                $this->_sessionTablePartition,
+                $id
+            );
+            return base64_decode($sessionRecord->serializedData);
+        }
+        catch (Zend_Service_WindowsAzure_Exception $ex)
+        {
+            return '';
+        }
+    }
+    
+    /**
+     * Write a specific session
+     * 
+     * @param int $id Session Id
+     * @param string $serializedData Serialized PHP object
+     */
+    public function write($id, $serializedData)
+    {
+        $sessionRecord = new Zend_Service_WindowsAzure_Storage_DynamicTableEntity($this->_sessionTablePartition, $id);
+        $sessionRecord->sessionExpires = time();
+        $sessionRecord->serializedData = base64_encode($serializedData);
+        
+        $sessionRecord->setAzurePropertyType('sessionExpires', 'Edm.Int32');
+
+        try
+        {
+            $this->_tableStorage->updateEntity($this->_sessionTable, $sessionRecord);
+        }
+        catch (Zend_Service_WindowsAzure_Exception $unknownRecord)
+        {
+            $this->_tableStorage->insertEntity($this->_sessionTable, $sessionRecord);
+        }
+    }
+    
+    /**
+     * Destroy a specific session
+     * 
+     * @param int $id Session Id
+     * @return boolean
+     */
+    public function destroy($id)
+    {
+        try
+        {
+            $sessionRecord = $this->_tableStorage->retrieveEntityById(
+                $this->_sessionTable,
+                $this->_sessionTablePartition,
+                $id
+            );
+            $this->_tableStorage->deleteEntity($this->_sessionTable, $sessionRecord);
+            
+            return true;
+        }
+        catch (Zend_Service_WindowsAzure_Exception $ex)
+        {
+            return false;
+        }
+    }
+    
+    /**
+     * Garbage collector
+     * 
+     * @param int $lifeTime Session maximal lifetime
+     * @see session.gc_divisor  100
+     * @see session.gc_maxlifetime 1440
+     * @see session.gc_probability 1
+     * @usage Execution rate 1/100 (session.gc_probability/session.gc_divisor)
+     * @return boolean
+     */
+    public function gc($lifeTime)
+    {
+        try
+        {
+            $result = $this->_tableStorage->retrieveEntities($this->_sessionTable, 'PartitionKey eq \'' . $this->_sessionTablePartition . '\' and sessionExpires lt ' . (time() - $lifeTime));
+            foreach ($result as $sessionRecord)
+            {
+                $this->_tableStorage->deleteEntity($this->_sessionTable, $sessionRecord);
+            }
+            return true;
+        }
+        catch (Zend_Service_WindowsAzure_exception $ex)
+        {
+            return false;
+        }
+    }
+}