current.response._dbtable_and_field is referenced in sessions2trash.py. That value was replaced in version 2.2.1 with current.response.session_db_table, current.response.session_db_record_id, and current.response.session_db_unique_key.
Attached is a fixed version of sessions2trash.py. --
#!/usr/bin/env python # -*- coding: utf-8 -*- """ sessions2trash.py Run this script in a web2py environment shell e.g. python web2py.py -S app If models are loaded (-M option) auth.settings.expiration is assumed for sessions without an expiration. If models are not loaded, sessions older than 60 minutes are removed. Use the --expiration option to override these values. Typical usage: # Delete expired sessions every 5 minutes nohup python web2py.py -S app -M -R scripts/sessions2trash.py & # Delete sessions older than 60 minutes regardless of expiration, # with verbose output, then exit. python web2py.py -S app -M -R scripts/sessions2trash.py -A -o -x 3600 -f -v # Delete all sessions regardless of expiry and exit. python web2py.py -S app -M -R scripts/sessions2trash.py -A -o -x 0 """ from __future__ import with_statement from gluon import current from gluon.storage import Storage from optparse import OptionParser import cPickle import datetime import os import stat import time EXPIRATION_MINUTES = 60 SLEEP_MINUTES = 5 VERSION = 0.3 class SessionSet(object): """Class representing a set of sessions""" def __init__(self, expiration, force, verbose): self.expiration = expiration self.force = force self.verbose = verbose def get(self): """Get session files/records.""" raise NotImplementedError def trash(self): """Trash expired sessions.""" now = datetime.datetime.now() for item in self.get(): status = 'OK' last_visit = item.last_visit_default() try: session = item.get() if session.auth: if session.auth.expiration and not self.force: self.expiration = session.auth.expiration if session.auth.last_visit: last_visit = session.auth.last_visit except: pass age = 0 if last_visit: age = total_seconds(now - last_visit) if age > self.expiration or not self.expiration: item.delete() status = 'trashed' if self.verbose > 1: print 'key: %s' % str(item) print 'expiration: %s seconds' % self.expiration print 'last visit: %s' % str(last_visit) print 'age: %s seconds' % age print 'status: %s' % status print '' elif self.verbose > 0: print('%s %s' % (str(item), status)) class SessionSetDb(SessionSet): """Class representing a set of sessions stored in database""" def __init__(self, expiration, force, verbose): SessionSet.__init__(self, expiration, force, verbose) def get(self): """Return list of SessionDb instances for existing sessions.""" sessions = [] table = current.response.session_db_table for row in table._db(table.id > 0).select(): sessions.append(SessionDb(row)) return sessions class SessionSetFiles(SessionSet): """Class representing a set of sessions stored in flat files""" def __init__(self, expiration, force, verbose): SessionSet.__init__(self, expiration, force, verbose) def get(self): """Return list of SessionFile instances for existing sessions.""" path = os.path.join(request.folder, 'sessions') return [SessionFile(os.path.join(path, x)) for x in os.listdir(path)] class SessionDb(object): """Class representing a single session stored in database""" def __init__(self, row): self.row = row def delete(self): table = current.response.session_db_table self.row.delete_record() table._db.commit() def get(self): session = Storage() session.update(cPickle.loads(self.row.session_data)) return session def last_visit_default(self): if isinstance(self.row.modified_datetime, datetime.datetime): return self.row.modified_datetime else: try: return datetime.datetime.strptime(self.row.modified_datetime, '%Y-%m-%d %H:%M:%S.%f') except: print 'failed to retrieve last modified time (value: %s)' % self.row.modified_datetime def __str__(self): return self.row.unique_key class SessionFile(object): """Class representing a single session stored as a flat file""" def __init__(self, filename): self.filename = filename def delete(self): os.unlink(self.filename) def get(self): session = Storage() with open(self.filename, 'rb+') as f: session.update(cPickle.load(f)) return session def last_visit_default(self): return datetime.datetime.fromtimestamp( os.stat(self.filename)[stat.ST_MTIME]) def __str__(self): return self.filename def total_seconds(delta): """ Adapted from Python 2.7's timedelta.total_seconds() method. Args: delta: datetime.timedelta instance. """ return (delta.microseconds + (delta.seconds + (delta.days * 24 * 3600)) * 10 ** 6) / 10 ** 6 def main(): """Main processing.""" usage = '%prog [options]' + '\nVersion: %s' % VERSION parser = OptionParser(usage=usage) parser.add_option('-f', '--force', action='store_true', dest='force', default=False, help=('Ignore session expiration. ' 'Force expiry based on -x option or auth.settings.expiration.') ) parser.add_option('-o', '--once', action='store_true', dest='once', default=False, help='Delete sessions, then exit.', ) parser.add_option('-s', '--sleep', dest='sleep', default=SLEEP_MINUTES * 60, type="int", help='Number of seconds to sleep between executions. Default 300.', ) parser.add_option('-v', '--verbose', default=0, action='count', help="print verbose output, a second -v increases verbosity") parser.add_option('-x', '--expiration', dest='expiration', default=None, type="int", help='Expiration value for sessions without expiration (in seconds)', ) (options, unused_args) = parser.parse_args() expiration = options.expiration if expiration is None: try: expiration = auth.settings.expiration except: expiration = EXPIRATION_MINUTES * 60 set_db = SessionSetDb(expiration, options.force, options.verbose) set_files = SessionSetFiles(expiration, options.force, options.verbose) while True: set_db.trash() set_files.trash() if options.once: break else: if options.verbose: print 'Sleeping %s seconds' % (options.sleep) time.sleep(options.sleep) main()