3
g
                 @   sD   d dl mZ d dlmZmZmZ d dlmZ dZG dd deZ	dS )    )settings)CreateErrorSessionBaseUpdateError)cacheszdjango.contrib.sessions.cachec                   sj   e Zd ZdZeZd fdd	Zedd Zdd Z	d	d
 Z
dddZdd ZdddZedd Z  ZS )SessionStorez&
    A cache-based session store.
    Nc                s   t tj | _t j| d S )N)r   r   ZSESSION_CACHE_ALIAS_cachesuper__init__)selfsession_key)	__class__ d/var/www/tester-filtro-web/env/lib/python3.6/site-packages/django/contrib/sessions/backends/cache.pyr
      s    zSessionStore.__init__c             C   s   | j | j  S )N)cache_key_prefixZ_get_or_create_session_key)r   r   r   r   	cache_key   s    zSessionStore.cache_keyc             C   sB   y| j j| j}W n tk
r*   d }Y nX |d k	r8|S d | _i S )N)r   getr   	Exception_session_key)r   Zsession_datar   r   r   load   s    
zSessionStore.loadc             C   sX   xJt dD ]>}| j | _y| jdd W n tk
r>   w
Y nX d| _d S W tdd S )Ni'  T)must_createzOUnable to create a new session key. It is likely that the cache is unavailable.)rangeZ_get_new_session_keyr   saver   modifiedRuntimeError)r   ir   r   r   create$   s    
zSessionStore.createFc             C   sl   | j d kr| j S |r | jj}n | jj| jd k	r<| jj}nt|| j| j|d| j	 }|rh| rht
d S )N)Zno_load)r   r   r   addr   r   setr   Z_get_sessionZget_expiry_ager   )r   r   funcresultr   r   r   r   6   s    





zSessionStore.savec             C   s   t |o| j| | jkS )N)boolr   r   )r   r   r   r   r   existsE   s    zSessionStore.existsc             C   s2   |d kr| j d krd S | j }| jj| j|  d S )N)r   r   deleter   )r   r   r   r   r   r#   H   s
    
zSessionStore.deletec             C   s   d S )Nr   )clsr   r   r   clear_expiredO   s    zSessionStore.clear_expired)N)F)N)__name__
__module____qualname____doc__
KEY_PREFIXr   r
   propertyr   r   r   r   r"   r#   classmethodr%   __classcell__r   r   )r   r   r   
   s   

r   N)
Zdjango.confr   Z%django.contrib.sessions.backends.baser   r   r   Zdjango.core.cacher   r*   r   r   r   r   r   <module>   s   