1 # Copyright (c) 2017 Cable Television Laboratories, Inc. ("CableLabs")
2 # and others. All rights reserved.
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at:
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
17 from neutronclient.common.exceptions import NotFound, Unauthorized
19 from snaps.config.router import RouterConfig
20 from snaps.openstack.openstack_creator import OpenStackNetworkObject
21 from snaps.openstack.utils import neutron_utils, keystone_utils
23 __author__ = 'spisarski'
25 logger = logging.getLogger('OpenStackNetwork')
28 class OpenStackRouter(OpenStackNetworkObject):
30 Class responsible for managing a router in OpenStack
33 def __init__(self, os_creds, router_settings):
35 Constructor - all parameters are required
36 :param os_creds: The credentials to connect with OpenStack
37 :param router_settings: The settings used to create a router object
38 (must be an instance of the RouterConfig
41 super(self.__class__, self).__init__(os_creds)
43 if not router_settings:
44 raise RouterCreationError('router_settings is required')
46 self.router_settings = router_settings
48 # Attributes instantiated on create()
50 self.__internal_subnets = list()
51 self.__internal_router_interface = None
53 # Dict where the port object is the key and any newly created router
54 # interfaces are the value
59 Loads the existing router.
60 :return: the Router domain object
62 super(self.__class__, self).initialize()
65 self.__router = neutron_utils.get_router(
66 self._neutron, router_settings=self.router_settings)
67 except Unauthorized as e:
68 logger.warn('Unable to lookup router with name %s - %s',
69 self.router_settings.name, e)
72 for internal_subnet_name in self.router_settings.internal_subnets:
73 internal_subnet = neutron_utils.get_subnet(
74 self._neutron, subnet_name=internal_subnet_name)
76 self.__internal_subnets.append(internal_subnet)
78 raise RouterCreationError(
79 'Subnet not found with name ' + internal_subnet_name)
81 keystone = keystone_utils.keystone_client(self._os_creds)
82 for port_setting in self.router_settings.port_settings:
83 port = neutron_utils.get_port(
84 self._neutron, keystone, port_settings=port_setting,
85 project_name=self._os_creds.project_name)
87 self.__ports.append(port)
93 Responsible for creating the router.
94 :return: the Router domain object
99 self.__router = neutron_utils.create_router(
100 self._neutron, self._os_creds, self.router_settings)
102 for internal_subnet_name in self.router_settings.internal_subnets:
103 internal_subnet = neutron_utils.get_subnet(
104 self._neutron, subnet_name=internal_subnet_name)
106 self.__internal_subnets.append(internal_subnet)
108 logger.debug('Adding router to subnet...')
109 router_intf = neutron_utils.add_interface_router(
110 self._neutron, self.__router,
111 subnet=internal_subnet)
112 self.__internal_router_interface = router_intf
114 raise RouterCreationError(
115 'Subnet not found with name ' + internal_subnet_name)
117 keystone = keystone_utils.keystone_client(self._os_creds)
118 for port_setting in self.router_settings.port_settings:
119 port = neutron_utils.get_port(
120 self._neutron, keystone, port_settings=port_setting,
121 project_name=self._os_creds.project_name)
123 'Retrieved port %s for router - %s', port_setting.name,
124 self.router_settings.name)
126 self.__ports.append(port)
129 port = neutron_utils.create_port(
130 self._neutron, self._os_creds, port_setting)
133 'Created port %s for router - %s',
135 self.router_settings.name)
136 self.__ports.append(port)
137 neutron_utils.add_interface_router(
138 self._neutron, self.__router, port=port)
140 raise RouterCreationError(
141 'Error creating port with name - '
144 self.__router = neutron_utils.get_router_by_id(
145 self._neutron, self.__router.id)
150 Removes and deletes all items created in reverse order.
152 for port in self.__ports:
154 'Removing router interface from router %s and port %s',
155 self.router_settings.name, port.name)
157 neutron_utils.remove_interface_router(self._neutron,
158 self.__router, port=port)
161 self.__ports = list()
163 for internal_subnet in self.__internal_subnets:
165 'Removing router interface from router %s and subnet %s',
166 self.router_settings.name, internal_subnet.name)
168 neutron_utils.remove_interface_router(self._neutron,
170 subnet=internal_subnet)
173 self.__internal_subnets = list()
176 logger.info('Removing router ' + self.router_settings.name)
178 neutron_utils.delete_router(self._neutron, self.__router)
183 def get_router(self):
185 Returns the OpenStack router object
190 def get_internal_router_interface(self):
192 Returns the OpenStack internal router interface object
195 return self.__internal_router_interface
198 class RouterCreationError(Exception):
200 Exception to be thrown when an router instance cannot be created
204 class RouterSettings(RouterConfig):
206 Class to hold the configuration settings required for creating OpenStack
211 def __init__(self, **kwargs):
212 from warnings import warn
213 warn('Use snaps.config.router.RouterConfig instead',
215 super(self.__class__, self).__init__(**kwargs)