171 lines
5.5 KiB
Python
171 lines
5.5 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# 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 novaclient.v1_1 import client as nc
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# swiftclient not available in all distributions - make s3 an optional
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# feature
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try:
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from swiftclient import client as swiftclient
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swiftclient_present = True
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except ImportError:
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swiftclient_present = False
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# quantumclient not available in all distributions - make quantum an optional
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# feature
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try:
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from quantumclient.v2_0 import client as quantumclient
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quantumclient_present = True
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except ImportError:
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quantumclient_present = False
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from heat.common import heat_keystoneclient as kc
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from heat.openstack.common import cfg
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from heat.openstack.common import log as logging
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logger = logging.getLogger('heat.engine.clients')
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class Clients(object):
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'''
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Convenience class to create and cache client instances.
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'''
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def __init__(self, context):
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self.context = context
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self._nova = {}
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self._keystone = None
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self._swift = None
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self._quantum = None
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def keystone(self):
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if self._keystone:
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return self._keystone
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self._keystone = kc.KeystoneClient(self.context)
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return self._keystone
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def nova(self, service_type='compute'):
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if service_type in self._nova:
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return self._nova[service_type]
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con = self.context
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args = {
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'project_id': con.tenant,
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'auth_url': con.auth_url,
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'service_type': service_type,
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}
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if con.password is not None:
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args['username'] = con.username
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args['api_key'] = con.password
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elif con.auth_token is not None:
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args['username'] = con.service_user
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args['api_key'] = con.service_password
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args['project_id'] = con.service_tenant
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args['proxy_token'] = con.auth_token
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args['proxy_tenant_id'] = con.tenant_id
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else:
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logger.error("Nova connection failed, no password or auth_token!")
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return None
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client = None
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try:
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# Workaround for issues with python-keyring, need no_cache=True
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# ref https://bugs.launchpad.net/python-novaclient/+bug/1020238
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# TODO(shardy): May be able to remove when the bug above is fixed
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client = nc.Client(no_cache=True, **args)
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client.authenticate()
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self._nova[service_type] = client
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except TypeError:
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# for compatibility with essex, which doesn't have no_cache=True
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# TODO(shardy): remove when we no longer support essex
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client = nc.Client(**args)
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client.authenticate()
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self._nova[service_type] = client
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return client
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def swift(self):
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if swiftclient_present == False:
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return None
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if self._swift:
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return self._swift
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con = self.context
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args = {
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'auth_version': '2'
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}
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if con.password is not None:
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args['user'] = con.username
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args['key'] = con.password
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args['authurl'] = con.auth_url
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args['tenant_name'] = con.tenant
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elif con.auth_token is not None:
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args['user'] = None
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args['key'] = None
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args['authurl'] = None
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args['preauthtoken'] = con.auth_token
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# Lookup endpoint for object-store service type
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service_type = 'object-store'
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endpoints = self.keystone().service_catalog.get_endpoints(
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service_type=service_type)
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if len(endpoints[service_type]) == 1:
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args['preauthurl'] = endpoints[service_type][0]['publicURL']
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else:
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logger.error("No endpoint found for %s service type" %
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service_type)
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return None
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else:
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logger.error("Swift connection failed, no password or " +
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"auth_token!")
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return None
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self._swift = swiftclient.Connection(**args)
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return self._swift
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def quantum(self):
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if quantumclient_present == False:
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return None
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if self._quantum:
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logger.debug('using existing _quantum')
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return self._quantum
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con = self.context
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args = {
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'auth_url': con.auth_url,
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'service_type': 'network',
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}
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if con.password is not None:
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args['username'] = con.username
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args['password'] = con.password
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args['tenant_name'] = con.tenant
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elif con.auth_token is not None:
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args['username'] = con.service_user
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args['password'] = con.service_password
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args['tenant_name'] = con.service_tenant
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args['token'] = con.auth_token
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else:
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logger.error("Quantum connection failed, "
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"no password or auth_token!")
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return None
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logger.debug('quantum args %s', args)
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self._quantum = quantumclient.Client(**args)
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return self._quantum
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