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# Copyright 2012 OpenStack Foundation
# All Rights Reserved.
#
# 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.
"""The python bindings for the OpenStack Identity (Keystone) project.
A Client object will allow you to communicate with the Identity server. The
recommended way to get a Client object is to use
:py:func:`keystoneclient.client.Client()`. :py:func:`~.Client()` uses version
discovery to create a V3 or V2 client depending on what versions the Identity
server supports and what version is requested.
Identity V2 and V3 clients can also be created directly. See
:py:class:`keystoneclient.v3.client.Client` for the V3 client and
:py:class:`keystoneclient.v2_0.client.Client` for the V2 client.
"""
import importlib
import sys
import pbr.version
__version__ = pbr.version.VersionInfo('python-keystoneclient').version_string()
__all__ = (
# Modules
'generic',
'v2_0',
'v3',
# Packages
'access',
'client',
'exceptions',
'httpclient',
'service_catalog',
)
class _LazyImporter(object):
def __init__(self, module):
self._module = module
def __getattr__(self, name):
# NB: this is only called until the import has been done.
# These submodules are part of the API without explicit importing, but
# expensive to load, so we load them on-demand rather than up-front.
lazy_submodules = [
'access',
'client',
'exceptions',
'generic',
'httpclient',
'service_catalog',
'v2_0',
'v3',
]
if name in lazy_submodules:
return importlib.import_module('keystoneclient.%s' % name)
# Return module attributes like __all__ etc.
return getattr(self._module, name)
sys.modules[__name__] = _LazyImporter(sys.modules[__name__])
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