""" Copyright 2015 Hewlett-Packard 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. This product includes cryptographic software written by Eric Young (eay@cryptsoft.com). This product includes software written by Tim Hudson (tjh@cryptsoft.com). ======================================================================== client interface to the Freezer API """ import argparse import os import socket from keystoneclient.auth.identity import v2 from keystoneclient.auth.identity import v3 from keystoneclient import session as ksc_session from backups import BackupsManager from registration import RegistrationManager from jobs import JobManager from actions import ActionManager from sessions import SessionManager FREEZER_SERVICE_TYPE = 'backup' def env(*vars, **kwargs): for v in vars: value = os.environ.get(v, None) if value: return value return kwargs.get('default', '') class cached_property(object): def __init__(self, func): self.__doc__ = getattr(func, '__doc__') self.func = func def __get__(self, obj, cls): if obj is None: return self value = obj.__dict__[self.func.__name__] = self.func(obj) return value def build_os_option_parser(parser): parser.add_argument( '--os-username', action='store', help=('Name used for authentication with the OpenStack ' 'Identity service. Defaults to env[OS_USERNAME].'), dest='os_username', default=env('OS_USERNAME')) parser.add_argument( '--os-password', action='store', help=('Password used for authentication with the OpenStack ' 'Identity service. Defaults to env[OS_PASSWORD].'), dest='os_password', default=env('OS_PASSWORD')) parser.add_argument( '--os-project-name', action='store', help=('Project name to scope to. Defaults to ' 'env[OS_PROJECT_NAME].'), dest='os_project_name', default=env('OS_PROJECT_NAME', default='default')) parser.add_argument( '--os-project-domain-name', action='store', help=('Domain name containing project. Defaults to ' 'env[OS_PROJECT_DOMAIN_NAME].'), dest='os_project_domain_name', default=env('OS_PROJECT_DOMAIN_NAME', default='default')) parser.add_argument( '--os-user-domain-name', action='store', help=('User\'s domain name. Defaults to ' 'env[OS_USER_DOMAIN_NAME].'), dest='os_user_domain_name', default=env('OS_USER_DOMAIN_NAME', default='default')) parser.add_argument( '--os-tenant-name', action='store', help=('Tenant to request authorization on. Defaults to ' 'env[OS_TENANT_NAME].'), dest='os_tenant_name', default=env('OS_TENANT_NAME')) parser.add_argument( '--os-tenant-id', action='store', help=('Tenant to request authorization on. Defaults to ' 'env[OS_TENANT_ID].'), dest='os_tenant_id', default=env('OS_TENANT_ID')) parser.add_argument( '--os-auth-url', action='store', help=('Specify the Identity endpoint to use for ' 'authentication. Defaults to env[OS_AUTH_URL].'), dest='os_auth_url', default=env('OS_AUTH_URL')) parser.add_argument( '--os-backup-url', action='store', help=('Specify the Freezer backup service endpoint to use. ' 'Defaults to env[OS_BACKUP_URL].'), dest='os_backup_url', default=env('OS_BACKUP_URL')) parser.add_argument( '--os-region-name', action='store', help=('Specify the region to use. Defaults to ' 'env[OS_REGION_NAME].'), dest='os_region_name', default=env('OS_REGION_NAME')) parser.add_argument( '--os-token', action='store', help=('Specify an existing token to use instead of retrieving' ' one via authentication (e.g. with username & password). ' 'Defaults to env[OS_TOKEN].'), dest='os_token', default=env('OS_TOKEN')) parser.add_argument( '--os-identity-api-version', action='store', help=('Identity API version: 2.0 or 3. ' 'Defaults to env[OS_IDENTITY_API_VERSION]'), dest='os_identity_api_version', default=env('OS_IDENTITY_API_VERSION')) return parser def guess_auth_version(opts): if opts.os_identity_api_version == '3': return '3' elif opts.os_identity_api_version == '2.0': return '2.0' elif opts.os_auth_url.endswith('v3'): return '3' elif opts.os_auth_url.endswith('v2.0'): return '2.0' return None def get_auth_plugin(opts): auth_version = guess_auth_version(opts) if opts.os_username: if auth_version == '3': return v3.Password(auth_url=opts.os_auth_url, username=opts.os_username, password=opts.os_password, project_name=opts.os_project_name, user_domain_name=opts.os_user_domain_name, project_domain_name=opts.os_project_domain_name) elif auth_version == '2.0': return v2.Password(auth_url=opts.os_auth_url, username=opts.os_username, password=opts.os_password, tenant_name=opts.os_tenant_name) elif opts.os_token: if auth_version == '3': return v3.Token(auth_url=opts.os_auth_url, token=opts.os_token, project_name=opts.os_project_name, project_domain_name=opts.os_project_domain_name) elif auth_version == '2.0': return v2.Token(auth_url=opts.os_auth_url, token=opts.os_token, tenant_name=opts.os_tenant_name) raise Exception('Unable to determine correct auth method') class Client(object): def __init__(self, version='1', token=None, username=None, password=None, tenant_name=None, auth_url=None, session=None, endpoint=None, opts=None): self.opts = opts or build_os_option_parser( argparse.ArgumentParser(description='Freezer Client') ).parse_args() if token: self.opts.os_token = token if username: self.opts.os_username = username if password: self.opts.os_password = password if tenant_name: self.opts.os_tenant_name = tenant_name if auth_url: self.opts.os_auth_url = auth_url if endpoint: self.opts.os_backup_url = endpoint self._session = session self.version = version self.backups = BackupsManager(self) self.registration = RegistrationManager(self) self.jobs = JobManager(self) self.actions = ActionManager(self) self.sessions = SessionManager(self) @cached_property def session(self): if self._session: return self._session auth_plugin = get_auth_plugin(self.opts) return ksc_session.Session(auth=auth_plugin) @cached_property def endpoint(self): if self.opts.os_backup_url: return self.opts.os_backup_url else: auth_ref = self.session.auth.get_auth_ref(self.session) endpoint = auth_ref.service_catalog.url_for( service_type=FREEZER_SERVICE_TYPE, endpoint_type='public', ) return endpoint @property def auth_token(self): return self.session.get_token() @cached_property def client_id(self): return '{0}_{1}'.format(self.session.get_project_id(), socket.gethostname())