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(neutron, subnet_settings=None, subnet_name=None):
152 Returns the first subnet object that fits the query else None including
153 if subnet_settings or subnet_name parameters are None.
154 :param neutron: the client
155 :param subnet_settings: the subnet settings of the object to retrieve
156 :param subnet_name: the name of the subnet to retrieve
157 :return: a SNAPS-OO Subnet domain object or None
161 sub_filter['name'] = subnet_settings.name
162 sub_filter['cidr'] = subnet_settings.cidr
163 if subnet_settings.gateway_ip:
164 sub_filter['gateway_ip'] = subnet_settings.gateway_ip
166 if subnet_settings.enable_dhcp is not None:
167 sub_filter['enable_dhcp'] = subnet_settings.enable_dhcp
169 if subnet_settings.destination:
170 sub_filter['destination'] = subnet_settings.destination
172 if subnet_settings.nexthop:
173 sub_filter['nexthop'] = subnet_settings.nexthop
175 if subnet_settings.ipv6_ra_mode:
176 sub_filter['ipv6_ra_mode'] = subnet_settings.ipv6_ra_mode
178 if subnet_settings.ipv6_address_mode:
179 sub_filter['ipv6_address_mode'] = subnet_settings.ipv6_address_mode
181 sub_filter['name'] = subnet_name
185 subnets = neutron.list_subnets(**sub_filter)
186 for subnet in subnets['subnets']:
187 return Subnet(**subnet)
190 def create_router(neutron, os_creds, router_settings):
192 Creates a router for OpenStack
193 :param neutron: the client
194 :param os_creds: the OpenStack credentials
195 :param router_settings: A dictionary containing the router configuration
196 and is responsible for creating the subnet request
198 :return: a SNAPS-OO Router domain object
201 json_body = router_settings.dict_for_neutron(neutron, os_creds)
202 logger.info('Creating router with name - ' + router_settings.name)
203 os_router = neutron.create_router(json_body)
204 return Router(**os_router['router'])
206 logger.error("Failed to create router.")
207 raise NeutronException('Failed to create router')
210 def delete_router(neutron, router):
212 Deletes a router for OpenStack
213 :param neutron: the client
214 :param router: a SNAPS-OO Router domain object
216 if neutron and router:
217 logger.info('Deleting router with name - ' + router.name)
218 neutron.delete_router(router=router.id)
221 def get_router_by_name(neutron, router_name):
223 Returns the first router object (dictionary) found with a given name
224 :param neutron: the client
225 :param router_name: the name of the network to retrieve
226 :return: a SNAPS-OO Router domain object
228 routers = neutron.list_routers(**{'name': router_name})
229 for router, routerInst in routers.items():
230 for inst in routerInst:
231 if inst.get('name') == router_name:
232 return Router(**inst)
236 def add_interface_router(neutron, router, subnet=None, port=None):
238 Adds an interface router for OpenStack for either a subnet or port.
239 Exception will be raised if requesting for both.
240 :param neutron: the client
241 :param router: the router object
242 :param subnet: the subnet object
243 :param port: the port object
244 :return: the interface router object
247 raise NeutronException(
248 'Cannot add interface to the router. Both subnet and '
249 'port were sent in. Either or please.')
251 if neutron and router and (router or subnet):
252 logger.info('Adding interface to router with name ' + router.name)
253 os_intf_router = neutron.add_interface_router(
254 router=router.id, body=__create_port_json_body(subnet, port))
255 return InterfaceRouter(**os_intf_router)
257 raise NeutronException(
258 'Unable to create interface router as neutron client,'
259 ' router or subnet were not created')
262 def remove_interface_router(neutron, router, subnet=None, port=None):
264 Removes an interface router for OpenStack
265 :param neutron: the client
266 :param router: the SNAPS-OO Router domain object
267 :param subnet: the subnet object (either subnet or port, not both)
268 :param port: the port object
272 logger.info('Removing router interface from router named ' +
274 neutron.remove_interface_router(
276 body=__create_port_json_body(subnet, port))
277 except NotFound as e:
278 logger.warning('Could not remove router interface. NotFound - %s',
282 logger.warning('Could not remove router interface, No router object')
285 def __create_port_json_body(subnet=None, port=None):
287 Returns the dictionary required for creating and deleting router
288 interfaces. Will only work on a subnet or port object. Will throw and
289 exception if parameters contain both or neither
290 :param subnet: the subnet object
291 :param port: the port object
295 raise NeutronException(
296 'Cannot create JSON body with both subnet and port')
297 if not subnet and not port:
298 raise NeutronException(
299 'Cannot create JSON body without subnet or port')
302 return {"subnet_id": subnet.id}
304 return {"port_id": port.id}
307 def create_port(neutron, os_creds, port_settings):
309 Creates a port for OpenStack
310 :param neutron: the client
311 :param os_creds: the OpenStack credentials
312 :param port_settings: the settings object for port configuration
313 :return: the SNAPS-OO Port domain object
315 json_body = port_settings.dict_for_neutron(neutron, os_creds)
316 logger.info('Creating port for network with name - %s',
317 port_settings.network_name)
318 os_port = neutron.create_port(body=json_body)['port']
319 return Port(name=os_port['name'], id=os_port['id'],
320 ips=os_port['fixed_ips'],
321 mac_address=os_port['mac_address'],
322 allowed_address_pairs=os_port['allowed_address_pairs'])
325 def delete_port(neutron, port):
327 Removes an OpenStack port
328 :param neutron: the client
329 :param port: the SNAPS-OO Port domain object
331 logger.info('Deleting port with name ' + port.name)
332 neutron.delete_port(port.id)
335 def get_port(neutron, port_settings=None, port_name=None):
337 Returns the first port object (dictionary) found for the given query
338 :param neutron: the client
339 :param port_settings: the PortSettings object used for generating the query
340 :param port_name: if port_settings is None, this name is the value to place
342 :return: a SNAPS-OO Port domain object
347 port_filter['name'] = port_settings.name
348 if port_settings.admin_state_up:
349 port_filter['admin_state_up'] = port_settings.admin_state_up
350 if port_settings.device_id:
351 port_filter['device_id'] = port_settings.device_id
352 if port_settings.mac_address:
353 port_filter['mac_address'] = port_settings.mac_address
355 port_filter['name'] = port_name
357 ports = neutron.list_ports(**port_filter)
358 for port in ports['ports']:
359 return Port(name=port['name'], id=port['id'],
360 ips=port['fixed_ips'], mac_address=port['mac_address'])
364 def create_security_group(neutron, keystone, sec_grp_settings):
366 Creates a security group object in OpenStack
367 :param neutron: the Neutron client
368 :param keystone: the Keystone client
369 :param sec_grp_settings: the security group settings
370 :return: a SNAPS-OO SecurityGroup domain object
372 logger.info('Creating security group with name - %s',
373 sec_grp_settings.name)
374 os_group = neutron.create_security_group(
375 sec_grp_settings.dict_for_neutron(keystone))
376 return SecurityGroup(**os_group['security_group'])
379 def delete_security_group(neutron, sec_grp):
381 Deletes a security group object from OpenStack
382 :param neutron: the client
383 :param sec_grp: the SNAPS SecurityGroup object to delete
385 logger.info('Deleting security group with name - %s', sec_grp.name)
386 neutron.delete_security_group(sec_grp.id)
389 def get_security_group(neutron, sec_grp_settings=None, sec_grp_name=None,
392 Returns the first security group for a given query. The query gets built
393 from the sec_grp_settings parameter if not None, else only the name of
394 the security group will be used, else if the query parameters are None then
395 None will be returned
396 :param neutron: the client
397 :param sec_grp_settings: an instance of SecurityGroupSettings config object
398 :param sec_grp_name: the name of security group object to retrieve
399 :param project_id: the ID of the project/tentant object that owns the
400 secuity group to retrieve
401 :return: a SNAPS-OO SecurityGroup domain object or None if not found
404 sec_grp_filter = dict()
406 sec_grp_filter['tenant_id'] = project_id
409 sec_grp_filter['name'] = sec_grp_settings.name
411 if sec_grp_settings.description:
412 sec_grp_filter['description'] = sec_grp_settings.description
414 sec_grp_filter['name'] = sec_grp_name
418 groups = neutron.list_security_groups(**sec_grp_filter)
419 for group in groups['security_groups']:
420 return SecurityGroup(**group)
423 def get_security_group_by_id(neutron, sec_grp_id):
425 Returns the first security group object of the given name else None
426 :param neutron: the client
427 :param sec_grp_id: the id of the security group to retrieve
428 :return: a SNAPS-OO SecurityGroup domain object or None if not found
430 logger.info('Retrieving security group with ID - ' + sec_grp_id)
432 groups = neutron.list_security_groups(**{'id': sec_grp_id})
433 for group in groups['security_groups']:
434 if group['id'] == sec_grp_id:
435 return SecurityGroup(**group)
439 def create_security_group_rule(neutron, sec_grp_rule_settings):
441 Creates a security group object in OpenStack
442 :param neutron: the client
443 :param sec_grp_rule_settings: the security group rule settings
444 :return: a SNAPS-OO SecurityGroupRule domain object
446 logger.info('Creating security group to security group - %s',
447 sec_grp_rule_settings.sec_grp_name)
448 os_rule = neutron.create_security_group_rule(
449 sec_grp_rule_settings.dict_for_neutron(neutron))
450 return SecurityGroupRule(**os_rule['security_group_rule'])
453 def delete_security_group_rule(neutron, sec_grp_rule):
455 Deletes a security group object from OpenStack
456 :param neutron: the client
457 :param sec_grp_rule: the SNAPS SecurityGroupRule object to delete
459 logger.info('Deleting security group rule with ID - %s',
461 neutron.delete_security_group_rule(sec_grp_rule.id)
464 def get_rules_by_security_group(neutron, sec_grp):
466 Retrieves all of the rules for a given security group
467 :param neutron: the client
468 :param sec_grp: a list of SNAPS SecurityGroupRule domain objects
470 logger.info('Retrieving security group rules associate with the '
471 'security group - %s', sec_grp.name)
473 rules = neutron.list_security_group_rules(
474 **{'security_group_id': sec_grp.id})
475 for rule in rules['security_group_rules']:
476 if rule['security_group_id'] == sec_grp.id:
477 out.append(SecurityGroupRule(**rule))
481 def get_rule_by_id(neutron, sec_grp, rule_id):
483 Deletes a security group object from OpenStack
484 :param neutron: the client
485 :param sec_grp: the SNAPS SecurityGroup domain object
486 :param rule_id: the rule's ID
487 :param sec_grp: a SNAPS SecurityGroupRule domain object
489 rules = neutron.list_security_group_rules(
490 **{'security_group_id': sec_grp.id})
491 for rule in rules['security_group_rules']:
492 if rule['id'] == rule_id:
493 return SecurityGroupRule(**rule)
497 def get_external_networks(neutron):
499 Returns a list of external OpenStack network object/dict for all external
501 :param neutron: the client
502 :return: a list of external networks of Type SNAPS-OO domain class Network
505 for network in neutron.list_networks(
506 **{'router:external': True})['networks']:
507 out.append(Network(**network))
511 def get_floating_ips(neutron, ports=None):
513 Returns all of the floating IPs
514 When ports is not None, FIPs returned must be associated with one of the
515 ports in the list and a tuple 2 where the first element being the port's
516 name and the second being the FloatingIp SNAPS-OO domain object.
517 When ports is None, all known FloatingIp SNAPS-OO domain objects will be
519 :param neutron: the Neutron client
520 :param ports: a list of SNAPS-OO Port objects to join
521 :return: a list of tuple 2 (port_name, SNAPS FloatingIp) objects when ports
522 is not None else a list of Port objects
525 fips = neutron.list_floatingips()
526 for fip in fips['floatingips']:
528 for port_name, port in ports:
529 if fip['port_id'] == port.id:
530 out.append((port.name, FloatingIp(
531 inst_id=fip['id'], ip=fip['floating_ip_address'])))
534 out.append(FloatingIp(inst_id=fip['id'],
535 ip=fip['floating_ip_address']))
540 def create_floating_ip(neutron, ext_net_name):
542 Returns the floating IP object that was created with this call
543 :param neutron: the Neutron client
544 :param ext_net_name: the name of the external network on which to apply the
546 :return: the SNAPS FloatingIp object
548 logger.info('Creating floating ip to external network - ' + ext_net_name)
549 ext_net = get_network(neutron, network_name=ext_net_name)
551 fip = neutron.create_floatingip(
553 {'floating_network_id': ext_net.id}})
555 return FloatingIp(inst_id=fip['floatingip']['id'],
556 ip=fip['floatingip']['floating_ip_address'])
558 raise NeutronException(
559 'Cannot create floating IP, external network not found')
562 def get_floating_ip(neutron, floating_ip):
564 Returns a floating IP object that should be identical to the floating_ip
566 :param neutron: the Neutron client
567 :param floating_ip: the SNAPS FloatingIp object
568 :return: hopefully the same floating IP object input
570 logger.debug('Attempting to retrieve existing floating ip with IP - %s',
572 os_fip = __get_os_floating_ip(neutron, floating_ip)
575 inst_id=os_fip['id'], ip=os_fip['floating_ip_address'])
578 def __get_os_floating_ip(neutron, floating_ip):
580 Returns an OpenStack floating IP object
582 :param neutron: the Neutron client
583 :param floating_ip: the SNAPS FloatingIp object
584 :return: hopefully the same floating IP object input
586 logger.debug('Attempting to retrieve existing floating ip with IP - %s',
588 fips = neutron.list_floatingips(ip=floating_ip.id)
590 for fip in fips['floatingips']:
591 if fip['id'] == floating_ip.id:
595 def delete_floating_ip(neutron, floating_ip):
597 Responsible for deleting a floating IP
598 :param neutron: the Neutron client
599 :param floating_ip: the SNAPS FloatingIp object
602 logger.debug('Attempting to delete existing floating ip with IP - %s',
604 return neutron.delete_floatingip(floating_ip.id)
607 class NeutronException(Exception):
609 Exception when calls to the Keystone client cannot be served properly