swauth/bin/swauth-cleanup-tokens

#!/usr/bin/env python
# Copyright (c) 2010-2011 OpenStack, LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from datetime import datetime
from datetime import timedelta
from getpass import getpass
import gettext
import json
from optparse import OptionParser
import re
from sys import argv
from sys import exit
from time import sleep
from time import time

from swiftclient.client import ClientException
from swiftclient.client import Connection

if __name__ == '__main__':
    gettext.install('swauth', unicode=1)
    parser = OptionParser(usage='Usage: %prog [options]')
    parser.add_option('-t', '--token-life', dest='token_life',
        default='86400', help='The expected life of tokens; token objects '
        'modified more than this number of seconds ago will be checked for '
        'expiration (default: 86400).')
    parser.add_option('-s', '--sleep', dest='sleep',
        default='0.1', help='The number of seconds to sleep between token '
        'checks (default: 0.1)')
    parser.add_option('-v', '--verbose', dest='verbose', action='store_true',
        default=False, help='Outputs everything done instead of just the '
        'deletions.')
    parser.add_option('-A', '--admin-url', dest='admin_url',
        default='http://127.0.0.1:8080/auth/', help='The URL to the auth '
        'subsystem (default: http://127.0.0.1:8080/auth/)')
    parser.add_option('-K', '--admin-key', dest='admin_key',
        help='The key for .super_admin.')
    parser.add_option('', '--purge', dest='purge_account', help='Purges all '
        'tokens for a given account whether the tokens have expired or not.')
    parser.add_option('', '--purge-all', dest='purge_all', action='store_true',
        default=False, help='Purges all tokens for all accounts and users '
        'whether the tokens have expired or not.')
    args = argv[1:]
    if not args:
        args.append('-h')
    (options, args) = parser.parse_args(args)
    if len(args) != 0:
        parser.parse_args(['-h'])
    if not options.admin_key:
        options.admin_key = getpass()
    options.admin_url = options.admin_url.rstrip('/')
    if not options.admin_url.endswith('/v1.0'):
        options.admin_url += '/v1.0'
    options.admin_user = '.super_admin:.super_admin'
    options.token_life = timedelta(0, float(options.token_life))
    options.sleep = float(options.sleep)
    conn = Connection(options.admin_url, options.admin_user, options.admin_key)
    if options.purge_account:
        marker = None
        while True:
            if options.verbose:
                print('GET %s?marker=%s' % (options.purge_account, marker))
            objs = conn.get_container(options.purge_account, marker=marker)[1]
            if objs:
                marker = objs[-1]['name']
            else:
                if options.verbose:
                    print('No more objects in %s' % options.purge_account)
                break
            for obj in objs:
                if options.verbose:
                    print('HEAD %s/%s' % (options.purge_account, obj['name']))
                headers = conn.head_object(options.purge_account, obj['name'])
                if 'x-object-meta-auth-token' in headers:
                    token = headers['x-object-meta-auth-token']
                    container = '.token_%s' % token[-1]
                    if options.verbose:
                        print('%s/%s purge account %r; deleting' %
                              (container, token, options.purge_account))
                    print('DELETE %s/%s' % (container, token))
                    try:
                        conn.delete_object(container, token)
                    except ClientException as err:
                        if err.http_status != 404:
                            raise
                continue
        if options.verbose:
            print('Done.')
        exit(0)
    for x in range(16):
        container = '.token_%x' % x
        marker = None
        while True:
            if options.verbose:
                print('GET %s?marker=%s' % (container, marker))
            try:
                objs = conn.get_container(container, marker=marker)[1]
            except ClientException as e:
                if e.http_status == 404:
                    exit('Container %s not found. swauth-prep needs to be '
                        'rerun' % (container))
                else:
                    exit('Object listing on container %s failed with status '
                        'code %d' % (container, e.http_status))
            if objs:
                marker = objs[-1]['name']
            else:
                if options.verbose:
                    print('No more objects in %s' % container)
                break
            for obj in objs:
                if options.purge_all:
                    if options.verbose:
                        print('%s/%s purge all; deleting' %
                              (container, obj['name']))
                    print('DELETE %s/%s' % (container, obj['name']))
                    try:
                        conn.delete_object(container, obj['name'])
                    except ClientException as err:
                        if err.http_status != 404:
                            raise
                    continue
                last_modified = datetime(*map(int, re.split(r'[^\d]',
                                              obj['last_modified'])[:-1]))
                ago = datetime.utcnow() - last_modified
                if ago > options.token_life:
                    if options.verbose:
                        print('%s/%s last modified %ss ago; investigating' %
                              (container, obj['name'],
                               ago.days * 86400 + ago.seconds))
                        print('GET %s/%s' % (container, obj['name']))
                    detail = conn.get_object(container, obj['name'])[1]
                    detail = json.loads(detail)
                    if detail['expires'] < time():
                        if options.verbose:
                            print('%s/%s expired %ds ago; deleting' %
                                  (container, obj['name'],
                                   time() - detail['expires']))
                        print('DELETE %s/%s' % (container, obj['name']))
                        try:
                            conn.delete_object(container, obj['name'])
                        except ClientException as e:
                            if e.http_status != 404:
                                print('DELETE of %s/%s failed with status '
                                    'code %d' % (container, obj['name'],
                                    e.http_status))
                    elif options.verbose:
                        print("%s/%s won't expire for %ds; skipping" %
                              (container, obj['name'],
                               detail['expires'] - time()))
                elif options.verbose:
                    print('%s/%s last modified %ss ago; skipping' %
                          (container, obj['name'],
                           ago.days * 86400 + ago.seconds))
                sleep(options.sleep)
    if options.verbose:
        print('Done.')