159 lines
5.5 KiB
Python
159 lines
5.5 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from ceilometerclient import client as ceclient
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from cinderclient import client as ciclient
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from glanceclient import client as glclient
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from keystoneauth1 import loading as ka_loading
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from keystoneclient import client as keyclient
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from neutronclient.neutron import client as netclient
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from novaclient import client as nvclient
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from oslo_config import cfg
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from watcher._i18n import _
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from watcher.common import exception
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NOVA_CLIENT_OPTS = [
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cfg.StrOpt('api_version',
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default='2',
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help=_('Version of Nova API to use in novaclient.'))]
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GLANCE_CLIENT_OPTS = [
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cfg.StrOpt('api_version',
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default='2',
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help=_('Version of Glance API to use in glanceclient.'))]
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CINDER_CLIENT_OPTS = [
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cfg.StrOpt('api_version',
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default='2',
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help=_('Version of Cinder API to use in cinderclient.'))]
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CEILOMETER_CLIENT_OPTS = [
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cfg.StrOpt('api_version',
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default='2',
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help=_('Version of Ceilometer API to use in '
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'ceilometerclient.'))]
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NEUTRON_CLIENT_OPTS = [
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cfg.StrOpt('api_version',
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default='2.0',
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help=_('Version of Neutron API to use in neutronclient.'))]
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cfg.CONF.register_opts(NOVA_CLIENT_OPTS, group='nova_client')
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cfg.CONF.register_opts(GLANCE_CLIENT_OPTS, group='glance_client')
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cfg.CONF.register_opts(CINDER_CLIENT_OPTS, group='cinder_client')
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cfg.CONF.register_opts(CEILOMETER_CLIENT_OPTS, group='ceilometer_client')
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cfg.CONF.register_opts(NEUTRON_CLIENT_OPTS, group='neutron_client')
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_CLIENTS_AUTH_GROUP = 'watcher_clients_auth'
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ka_loading.register_auth_conf_options(cfg.CONF, _CLIENTS_AUTH_GROUP)
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ka_loading.register_session_conf_options(cfg.CONF, _CLIENTS_AUTH_GROUP)
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class OpenStackClients(object):
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"""Convenience class to create and cache client instances."""
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def __init__(self):
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self.reset_clients()
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def reset_clients(self):
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self._session = None
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self._keystone = None
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self._nova = None
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self._glance = None
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self._cinder = None
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self._ceilometer = None
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self._neutron = None
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def _get_keystone_session(self):
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auth = ka_loading.load_auth_from_conf_options(cfg.CONF,
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_CLIENTS_AUTH_GROUP)
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sess = ka_loading.load_session_from_conf_options(cfg.CONF,
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_CLIENTS_AUTH_GROUP,
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auth=auth)
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return sess
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@property
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def auth_url(self):
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return self.keystone().auth_url
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@property
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def session(self):
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if not self._session:
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self._session = self._get_keystone_session()
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return self._session
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def _get_client_option(self, client, option):
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return getattr(getattr(cfg.CONF, '%s_client' % client), option)
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@exception.wrap_keystone_exception
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def keystone(self):
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if not self._keystone:
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self._keystone = keyclient.Client(session=self.session)
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return self._keystone
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@exception.wrap_keystone_exception
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def nova(self):
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if self._nova:
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return self._nova
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novaclient_version = self._get_client_option('nova', 'api_version')
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self._nova = nvclient.Client(novaclient_version,
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session=self.session)
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return self._nova
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@exception.wrap_keystone_exception
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def glance(self):
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if self._glance:
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return self._glance
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glanceclient_version = self._get_client_option('glance', 'api_version')
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self._glance = glclient.Client(glanceclient_version,
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session=self.session)
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return self._glance
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@exception.wrap_keystone_exception
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def cinder(self):
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if self._cinder:
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return self._cinder
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cinderclient_version = self._get_client_option('cinder', 'api_version')
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self._cinder = ciclient.Client(cinderclient_version,
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session=self.session)
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return self._cinder
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@exception.wrap_keystone_exception
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def ceilometer(self):
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if self._ceilometer:
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return self._ceilometer
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ceilometerclient_version = self._get_client_option('ceilometer',
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'api_version')
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self._ceilometer = ceclient.get_client(ceilometerclient_version,
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session=self.session)
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return self._ceilometer
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@exception.wrap_keystone_exception
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def neutron(self):
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if self._neutron:
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return self._neutron
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neutronclient_version = self._get_client_option('neutron',
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'api_version')
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self._neutron = netclient.Client(neutronclient_version,
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session=self.session)
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self._neutron.format = 'json'
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return self._neutron
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