sahara/sahara/utils/openstack/swift.py

94 lines
3.5 KiB
Python

# Copyright (c) 2014 Red Hat, Inc.
#
# 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 oslo_config import cfg
import swiftclient
from sahara import context
from sahara.swift import swift_helper as sh
from sahara.swift import utils as su
from sahara.utils.openstack import base
from sahara.utils.openstack import keystone as k
opts = [
cfg.BoolOpt('api_insecure',
default=False,
help='Allow to perform insecure SSL requests to swift.'),
cfg.StrOpt('ca_file',
help='Location of ca certificates file to use for swift '
'client requests.'),
cfg.StrOpt("endpoint_type",
default="internalURL",
help="Endpoint type for swift client requests")
]
swift_group = cfg.OptGroup(name='swift',
title='Swift client options')
CONF = cfg.CONF
CONF.register_group(swift_group)
CONF.register_opts(opts, group=swift_group)
def client(username, password, trust_id=None):
'''return a Swift client
This will return a Swift client for the specified username scoped to the
current context project, unless a trust identifier is specified.
If a trust identifier is present then the Swift client will be created
based on a preauthorized token generated by the username scoped to the
trust identifier.
:param username: The username for the Swift client
:param password: The password associated with the username
:param trust_id: A trust identifier for scoping the username (optional)
:returns: A Swift client object
'''
if trust_id:
proxyauth = k.auth_for_proxy(username, password, trust_id)
return client_from_token(k.token_from_auth(proxyauth))
else:
return swiftclient.Connection(
auth_version='3',
cacert=CONF.swift.ca_file,
insecure=CONF.swift.api_insecure,
authurl=su.retrieve_auth_url(CONF.keystone.endpoint_type),
user=username,
key=password,
tenant_name=sh.retrieve_tenant(),
retries=CONF.retries.retries_number,
retry_on_ratelimit=True,
starting_backoff=CONF.retries.retry_after,
max_backoff=CONF.retries.retry_after)
def client_from_token(token=None):
if not token:
token = context.get_auth_token()
'''return a Swift client authenticated from a token.'''
return swiftclient.Connection(auth_version='3',
cacert=CONF.swift.ca_file,
insecure=CONF.swift.api_insecure,
preauthurl=base.url_for(
service_type="object-store",
endpoint_type=CONF.swift.endpoint_type),
preauthtoken=token,
retries=CONF.retries.retries_number,
retry_on_ratelimit=True,
starting_backoff=CONF.retries.retry_after,
max_backoff=CONF.retries.retry_after)