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authorMarc Abramowitz <marc@marc-abramowitz.com>2016-03-07 18:52:36 -0800
committerMarc Abramowitz <marc@marc-abramowitz.com>2016-03-07 18:52:36 -0800
commitcc83e06efff71b81ca5a3ac6df65775971181295 (patch)
treed52fa3f1a93730f263c2c5ac8266de8e5fb12abf /paste/flup_session.py
downloadpaste-git-cc83e06efff71b81ca5a3ac6df65775971181295.tar.gz
tox.ini: Measure test coveragetox_coverage
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+# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
+# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
+
+"""
+Creates a session object.
+
+In your application, use::
+
+ environ['paste.flup_session_service'].session
+
+This will return a dictionary. The contents of this dictionary will
+be saved to disk when the request is completed. The session will be
+created when you first fetch the session dictionary, and a cookie will
+be sent in that case. There's current no way to use sessions without
+cookies, and there's no way to delete a session except to clear its
+data.
+"""
+
+from paste import httpexceptions
+from paste import wsgilib
+import flup.middleware.session
+flup_session = flup.middleware.session
+
+# This is a dictionary of existing stores, keyed by a tuple of
+# store type and parameters
+store_cache = {}
+
+class NoDefault(object):
+ pass
+
+class SessionMiddleware(object):
+
+ session_classes = {
+ 'memory': (flup_session.MemorySessionStore,
+ [('session_timeout', 'timeout', int, 60)]),
+ 'disk': (flup_session.DiskSessionStore,
+ [('session_timeout', 'timeout', int, 60),
+ ('session_dir', 'storeDir', str, '/tmp/sessions')]),
+ 'shelve': (flup_session.ShelveSessionStore,
+ [('session_timeout', 'timeout', int, 60),
+ ('session_file', 'storeFile', str,
+ '/tmp/session.shelve')]),
+ }
+
+
+ def __init__(self, app,
+ global_conf=None,
+ session_type=NoDefault,
+ cookie_name=NoDefault,
+ **store_config
+ ):
+ self.application = app
+ if session_type is NoDefault:
+ session_type = global_conf.get('session_type', 'disk')
+ self.session_type = session_type
+ try:
+ self.store_class, self.store_args = self.session_classes[self.session_type]
+ except KeyError:
+ raise KeyError(
+ "The session_type %s is unknown (I know about %s)"
+ % (self.session_type,
+ ', '.join(self.session_classes.keys())))
+ kw = {}
+ for config_name, kw_name, coercer, default in self.store_args:
+ value = coercer(store_config.get(config_name, default))
+ kw[kw_name] = value
+ self.store = self.store_class(**kw)
+ if cookie_name is NoDefault:
+ cookie_name = global_conf.get('session_cookie', '_SID_')
+ self.cookie_name = cookie_name
+
+ def __call__(self, environ, start_response):
+ service = flup_session.SessionService(
+ self.store, environ, cookieName=self.cookie_name,
+ fieldName=self.cookie_name)
+ environ['paste.flup_session_service'] = service
+
+ def cookie_start_response(status, headers, exc_info=None):
+ service.addCookie(headers)
+ return start_response(status, headers, exc_info)
+
+ try:
+ app_iter = self.application(environ, cookie_start_response)
+ except httpexceptions.HTTPException as e:
+ headers = (e.headers or {}).items()
+ service.addCookie(headers)
+ e.headers = dict(headers)
+ service.close()
+ raise
+ except:
+ service.close()
+ raise
+
+ return wsgilib.add_close(app_iter, service.close)
+
+def make_session_middleware(app, global_conf,
+ session_type=NoDefault,
+ cookie_name=NoDefault,
+ **store_config):
+ """
+ Wraps the application in a session-managing middleware.
+ The session service can then be found in
+ ``environ['paste.flup_session_service']``
+ """
+ return SessionMiddleware(
+ app, global_conf=global_conf,
+ session_type=session_type, cookie_name=cookie_name,
+ **store_config)