Source code for watson.http.sessions.file

# -*- coding: utf-8 -*-
import os
import pickle
from tempfile import gettempdir
from watson.common.contextmanagers import suppress
from import StorageMixin

[docs]class Storage(StorageMixin): """A file based storage adapter for session data. By default it will store data in the systems temp directory, however this can be overriden in the __init__. """ storage = None file_prefix = 'session'
[docs] def __init__(self, id=None, timeout=None, autosave=True, storage=None): """ Initialize the File Storage object. Args: storage: where the files should be stored """ super(Storage, self).__init__(id, timeout, autosave) if storage and os.path.exists(storage): = storage else: = gettempdir()
# Internals def _exists(self): return os.path.exists(self.__file_path()) def _save(self, expires): with open(self.__file_path(), 'wb') as file: with suppress(Exception): pickle.dump( (, expires), file, pickle.HIGHEST_PROTOCOL) def _load(self): try: with open(self.__file_path(), 'rb') as file: with suppress(Exception): return pickle.load(file) except: return () def _destroy(self): with suppress(OSError): os.unlink(self.__file_path()) def __file_path(self): return ( os.path.join(, '{0}-{1}'.format( self.file_prefix, )