Allow the registration of third party cache and session drivers.

laravel/session.php

@@ -9,6 +9,13 @@ class Session {
 	 */
 	public static $instance;
 
+	/**
+	 * The third-party driver registrar.
+	 *
+	 * @var array
+	 */
+	public static $registrar = array();
+
 	/**
 	 * The string name of the CSRF token stored in the session.
 	 *
@@ -47,6 +54,11 @@ class Session {
 	 */
 	public static function factory($driver)
 	{
+		if (isset(static::$registrar[$driver]))
+		{
+			return static::$registrar[$driver]();
+		}
+
 		switch ($driver)
 		{
 			case 'apc':
@@ -105,6 +117,18 @@ class Session {
 		return ! is_null(static::$instance);
 	}
 
+	/**
+	 * Register a third-party cache driver.
+	 *
+	 * @param  string   $driver
+	 * @param  Closure  $resolver
+	 * @return void
+	 */
+	public static function register($driver, Closure $resolver)
+	{
+		static::$registrar[$driver] = $resolver;
+	}
+
 	/**
 	 * Magic Method for calling the methods on the session singleton instance.
 	 *