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
18 from neutronclient.neutron.client import Client
20 from snaps.domain.network import (
21 Port, SecurityGroup, SecurityGroupRule, Router, InterfaceRouter, Subnet,
23 from snaps.domain.vm_inst import FloatingIp
24 from snaps.openstack.utils import keystone_utils
26 __author__ = 'spisarski'
28 logger = logging.getLogger('neutron_utils')
31 Utilities for basic neutron API calls
35 def neutron_client(os_creds):
37 Instantiates and returns a client for communications with OpenStack's
39 :param os_creds: the credentials for connecting to the OpenStack remote API
40 :return: the client object
42 return Client(api_version=os_creds.network_api_version,
43 session=keystone_utils.keystone_session(os_creds),
44 region_name=os_creds.region_name)
47 def create_network(neutron, os_creds, network_settings):
49 Creates a network for OpenStack
50 :param neutron: the client
51 :param os_creds: the OpenStack credentials
52 :param network_settings: A dictionary containing the network configuration
53 and is responsible for creating the network
55 :return: a SNAPS-OO Network domain object
57 if neutron and network_settings:
58 logger.info('Creating network with name ' + network_settings.name)
59 json_body = network_settings.dict_for_neutron(os_creds)
60 os_network = neutron.create_network(body=json_body)
61 return Network(**os_network['network'])
63 raise NeutronException('Failded to create network')
66 def delete_network(neutron, network):
68 Deletes a network for OpenStack
69 :param neutron: the client
70 :param network: a SNAPS-OO Network domain object
72 if neutron and network:
73 logger.info('Deleting network with name ' + network.name)
74 neutron.delete_network(network.id)
77 def get_network(neutron, network_settings=None, network_name=None,
80 Returns Network SNAPS-OO domain object the first network found with
81 either the given attributes from the network_settings object if not None,
82 else the query will use just the name from the network_name parameter.
83 When the project_id is included, that will be added to the query filter.
84 :param neutron: the client
85 :param network_settings: the NetworkSettings object used to create filter
86 :param network_name: the name of the network to retrieve
87 :param project_id: the id of the network's project
88 :return: a SNAPS-OO Network domain object
92 net_filter['name'] = network_settings.name
94 net_filter['name'] = network_name
97 net_filter['project_id'] = project_id
99 networks = neutron.list_networks(**net_filter)
100 for network, netInsts in networks.items():
101 for inst in netInsts:
102 return Network(**inst)
105 def get_network_by_id(neutron, network_id):
107 Returns the network object (dictionary) with the given ID else None
108 :param neutron: the client
109 :param network_id: the id of the network to retrieve
110 :return: a SNAPS-OO Network domain object
112 networks = neutron.list_networks(**{'id': network_id})
113 for network in networks['networks']:
114 if network['id'] == network_id:
115 return Network(**network)
118 def create_subnet(neutron, subnet_settings, os_creds, network=None):
120 Creates a network subnet for OpenStack
121 :param neutron: the client
122 :param network: the network object
123 :param subnet_settings: A dictionary containing the subnet configuration
124 and is responsible for creating the subnet request
126 :param os_creds: the OpenStack credentials
127 :return: a SNAPS-OO Subnet domain object
129 if neutron and network and subnet_settings:
130 json_body = {'subnets': [subnet_settings.dict_for_neutron(
131 os_creds, network=network)]}
132 logger.info('Creating subnet with name ' + subnet_settings.name)
133 subnets = neutron.create_subnet(body=json_body)
134 return Subnet(**subnets['subnets'][0])
136 raise NeutronException('Failed to create subnet')
139 def delete_subnet(neutron, subnet):
141 Deletes a network subnet for OpenStack
142 :param neutron: the client
143 :param subnet: a SNAPS-OO Subnet domain object
145 if neutron and subnet:
146 logger.info('Deleting subnet with name ' + subnet.name)
147 neutron.delete_subnet(subnet.id)
150 def get_subnet_by_name(neutron, subnet_name):
152 Returns the first subnet object (dictionary) found with a given name
153 :param neutron: the client
154 :param subnet_name: the name of the network to retrieve
155 :return: a SNAPS-OO Subnet domain object
157 subnets = neutron.list_subnets(**{'name': subnet_name})
158 for subnet, subnetInst in subnets.items():
159 for inst in subnetInst:
160 if inst['name'] == subnet_name:
161 return Subnet(**inst)
165 def create_router(neutron, os_creds, router_settings):
167 Creates a router for OpenStack
168 :param neutron: the client
169 :param os_creds: the OpenStack credentials
170 :param router_settings: A dictionary containing the router configuration
171 and is responsible for creating the subnet request
173 :return: a SNAPS-OO Router domain object
176 json_body = router_settings.dict_for_neutron(neutron, os_creds)
177 logger.info('Creating router with name - ' + router_settings.name)
178 os_router = neutron.create_router(json_body)
179 return Router(**os_router['router'])
181 logger.error("Failed to create router.")
182 raise NeutronException('Failed to create router')
185 def delete_router(neutron, router):
187 Deletes a router for OpenStack
188 :param neutron: the client
189 :param router: a SNAPS-OO Router domain object
191 if neutron and router:
192 logger.info('Deleting router with name - ' + router.name)
193 neutron.delete_router(router=router.id)
196 def get_router_by_name(neutron, router_name):
198 Returns the first router object (dictionary) found with a given name
199 :param neutron: the client
200 :param router_name: the name of the network to retrieve
201 :return: a SNAPS-OO Router domain object
203 routers = neutron.list_routers(**{'name': router_name})
204 for router, routerInst in routers.items():
205 for inst in routerInst:
206 if inst.get('name') == router_name:
207 return Router(**inst)
211 def add_interface_router(neutron, router, subnet=None, port=None):
213 Adds an interface router for OpenStack for either a subnet or port.
214 Exception will be raised if requesting for both.
215 :param neutron: the client
216 :param router: the router object
217 :param subnet: the subnet object
218 :param port: the port object
219 :return: the interface router object
222 raise NeutronException(
223 'Cannot add interface to the router. Both subnet and '
224 'port were sent in. Either or please.')
226 if neutron and router and (router or subnet):
227 logger.info('Adding interface to router with name ' + router.name)
228 os_intf_router = neutron.add_interface_router(
229 router=router.id, body=__create_port_json_body(subnet, port))
230 return InterfaceRouter(**os_intf_router)
232 raise NeutronException(
233 'Unable to create interface router as neutron client,'
234 ' router or subnet were not created')
237 def remove_interface_router(neutron, router, subnet=None, port=None):
239 Removes an interface router for OpenStack
240 :param neutron: the client
241 :param router: the SNAPS-OO Router domain object
242 :param subnet: the subnet object (either subnet or port, not both)
243 :param port: the port object
247 logger.info('Removing router interface from router named ' +
249 neutron.remove_interface_router(
251 body=__create_port_json_body(subnet, port))
252 except NotFound as e:
253 logger.warning('Could not remove router interface. NotFound - %s',
257 logger.warning('Could not remove router interface, No router object')
260 def __create_port_json_body(subnet=None, port=None):
262 Returns the dictionary required for creating and deleting router
263 interfaces. Will only work on a subnet or port object. Will throw and
264 exception if parameters contain both or neither
265 :param subnet: the subnet object
266 :param port: the port object
270 raise NeutronException(
271 'Cannot create JSON body with both subnet and port')
272 if not subnet and not port:
273 raise NeutronException(
274 'Cannot create JSON body without subnet or port')
277 return {"subnet_id": subnet.id}
279 return {"port_id": port.id}
282 def create_port(neutron, os_creds, port_settings):
284 Creates a port for OpenStack
285 :param neutron: the client
286 :param os_creds: the OpenStack credentials
287 :param port_settings: the settings object for port configuration
288 :return: the SNAPS-OO Port domain object
290 json_body = port_settings.dict_for_neutron(neutron, os_creds)
291 logger.info('Creating port for network with name - %s',
292 port_settings.network_name)
293 os_port = neutron.create_port(body=json_body)['port']
294 return Port(name=os_port['name'], id=os_port['id'],
295 ips=os_port['fixed_ips'],
296 mac_address=os_port['mac_address'],
297 allowed_address_pairs=os_port['allowed_address_pairs'])
300 def delete_port(neutron, port):
302 Removes an OpenStack port
303 :param neutron: the client
304 :param port: the SNAPS-OO Port domain object
306 logger.info('Deleting port with name ' + port.name)
307 neutron.delete_port(port.id)
310 def get_port_by_name(neutron, port_name):
312 Returns the first port object (dictionary) found with a given name
313 :param neutron: the client
314 :param port_name: the name of the port to retrieve
315 :return: a SNAPS-OO Port domain object
317 ports = neutron.list_ports(**{'name': port_name})
318 for port in ports['ports']:
319 if port['name'] == port_name:
320 return Port(name=port['name'], id=port['id'],
321 ips=port['fixed_ips'], mac_address=port['mac_address'])
325 def create_security_group(neutron, keystone, sec_grp_settings):
327 Creates a security group object in OpenStack
328 :param neutron: the Neutron client
329 :param keystone: the Keystone client
330 :param sec_grp_settings: the security group settings
331 :return: a SNAPS-OO SecurityGroup domain object
333 logger.info('Creating security group with name - %s',
334 sec_grp_settings.name)
335 os_group = neutron.create_security_group(
336 sec_grp_settings.dict_for_neutron(keystone))
337 return SecurityGroup(**os_group['security_group'])
340 def delete_security_group(neutron, sec_grp):
342 Deletes a security group object from OpenStack
343 :param neutron: the client
344 :param sec_grp: the SNAPS SecurityGroup object to delete
346 logger.info('Deleting security group with name - %s', sec_grp.name)
347 neutron.delete_security_group(sec_grp.id)
350 def get_security_group(neutron, name, tenant_id=None):
352 Returns the first security group object of the given name else None
353 :param neutron: the client
354 :param name: the name of security group object to retrieve
355 :return: a SNAPS-OO SecurityGroup domain object or None if not found
357 logger.info('Retrieving security group with name - ' + name)
359 filter = {'name': name}
361 filter['tenant_id'] = tenant_id
362 groups = neutron.list_security_groups(**filter)
363 for group in groups['security_groups']:
364 if group['name'] == name:
365 return SecurityGroup(**group)
369 def get_security_group_by_id(neutron, sec_grp_id):
371 Returns the first security group object of the given name else None
372 :param neutron: the client
373 :param sec_grp_id: the id of the security group to retrieve
374 :return: a SNAPS-OO SecurityGroup domain object or None if not found
376 logger.info('Retrieving security group with ID - ' + sec_grp_id)
378 groups = neutron.list_security_groups(**{'id': sec_grp_id})
379 for group in groups['security_groups']:
380 if group['id'] == sec_grp_id:
381 return SecurityGroup(**group)
385 def create_security_group_rule(neutron, sec_grp_rule_settings):
387 Creates a security group object in OpenStack
388 :param neutron: the client
389 :param sec_grp_rule_settings: the security group rule settings
390 :return: a SNAPS-OO SecurityGroupRule domain object
392 logger.info('Creating security group to security group - %s',
393 sec_grp_rule_settings.sec_grp_name)
394 os_rule = neutron.create_security_group_rule(
395 sec_grp_rule_settings.dict_for_neutron(neutron))
396 return SecurityGroupRule(**os_rule['security_group_rule'])
399 def delete_security_group_rule(neutron, sec_grp_rule):
401 Deletes a security group object from OpenStack
402 :param neutron: the client
403 :param sec_grp_rule: the SNAPS SecurityGroupRule object to delete
405 logger.info('Deleting security group rule with ID - %s',
407 neutron.delete_security_group_rule(sec_grp_rule.id)
410 def get_rules_by_security_group(neutron, sec_grp):
412 Retrieves all of the rules for a given security group
413 :param neutron: the client
414 :param sec_grp: a list of SNAPS SecurityGroupRule domain objects
416 logger.info('Retrieving security group rules associate with the '
417 'security group - %s', sec_grp.name)
419 rules = neutron.list_security_group_rules(
420 **{'security_group_id': sec_grp.id})
421 for rule in rules['security_group_rules']:
422 if rule['security_group_id'] == sec_grp.id:
423 out.append(SecurityGroupRule(**rule))
427 def get_rule_by_id(neutron, sec_grp, rule_id):
429 Deletes a security group object from OpenStack
430 :param neutron: the client
431 :param sec_grp: the SNAPS SecurityGroup domain object
432 :param rule_id: the rule's ID
433 :param sec_grp: a SNAPS SecurityGroupRule domain object
435 rules = neutron.list_security_group_rules(
436 **{'security_group_id': sec_grp.id})
437 for rule in rules['security_group_rules']:
438 if rule['id'] == rule_id:
439 return SecurityGroupRule(**rule)
443 def get_external_networks(neutron):
445 Returns a list of external OpenStack network object/dict for all external
447 :param neutron: the client
448 :return: a list of external networks of Type SNAPS-OO domain class Network
451 for network in neutron.list_networks(
452 **{'router:external': True})['networks']:
453 out.append(Network(**network))
457 def get_floating_ips(neutron, ports=None):
459 Returns all of the floating IPs
460 When ports is not None, FIPs returned must be associated with one of the
461 ports in the list and a tuple 2 where the first element being the port's
462 name and the second being the FloatingIp SNAPS-OO domain object.
463 When ports is None, all known FloatingIp SNAPS-OO domain objects will be
465 :param neutron: the Neutron client
466 :param ports: a list of SNAPS-OO Port objects to join
467 :return: a list of tuple 2 (port_name, SNAPS FloatingIp) objects when ports
468 is not None else a list of Port objects
471 fips = neutron.list_floatingips()
472 for fip in fips['floatingips']:
474 for port_name, port in ports:
475 if fip['port_id'] == port.id:
476 out.append((port.name, FloatingIp(
477 inst_id=fip['id'], ip=fip['floating_ip_address'])))
480 out.append(FloatingIp(inst_id=fip['id'],
481 ip=fip['floating_ip_address']))
486 def create_floating_ip(neutron, ext_net_name):
488 Returns the floating IP object that was created with this call
489 :param neutron: the Neutron client
490 :param ext_net_name: the name of the external network on which to apply the
492 :return: the SNAPS FloatingIp object
494 logger.info('Creating floating ip to external network - ' + ext_net_name)
495 ext_net = get_network(neutron, network_name=ext_net_name)
497 fip = neutron.create_floatingip(
499 {'floating_network_id': ext_net.id}})
501 return FloatingIp(inst_id=fip['floatingip']['id'],
502 ip=fip['floatingip']['floating_ip_address'])
504 raise NeutronException(
505 'Cannot create floating IP, external network not found')
508 def get_floating_ip(neutron, floating_ip):
510 Returns a floating IP object that should be identical to the floating_ip
512 :param neutron: the Neutron client
513 :param floating_ip: the SNAPS FloatingIp object
514 :return: hopefully the same floating IP object input
516 logger.debug('Attempting to retrieve existing floating ip with IP - %s',
518 os_fip = __get_os_floating_ip(neutron, floating_ip)
521 inst_id=os_fip['id'], ip=os_fip['floating_ip_address'])
524 def __get_os_floating_ip(neutron, floating_ip):
526 Returns an OpenStack floating IP object
528 :param neutron: the Neutron client
529 :param floating_ip: the SNAPS FloatingIp object
530 :return: hopefully the same floating IP object input
532 logger.debug('Attempting to retrieve existing floating ip with IP - %s',
534 fips = neutron.list_floatingips(ip=floating_ip.id)
536 for fip in fips['floatingips']:
537 if fip['id'] == floating_ip.id:
541 def delete_floating_ip(neutron, floating_ip):
543 Responsible for deleting a floating IP
544 :param neutron: the Neutron client
545 :param floating_ip: the SNAPS FloatingIp object
548 logger.debug('Attempting to delete existing floating ip with IP - %s',
550 return neutron.delete_floatingip(floating_ip.id)
553 class NeutronException(Exception):
555 Exception when calls to the Keystone client cannot be served properly