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))
46 def create_network(neutron, os_creds, network_settings):
48 Creates a network for OpenStack
49 :param neutron: the client
50 :param os_creds: the OpenStack credentials
51 :param network_settings: A dictionary containing the network configuration
52 and is responsible for creating the network
54 :return: a SNAPS-OO Network domain object
56 if neutron and network_settings:
57 logger.info('Creating network with name ' + network_settings.name)
58 json_body = network_settings.dict_for_neutron(os_creds)
59 os_network = neutron.create_network(body=json_body)
60 return Network(**os_network['network'])
62 logger.error("Failed 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_name, project_id=None):
79 Returns an object (dictionary) of the first network found with a given name
80 and project_id (if included)
81 :param neutron: the client
82 :param network_name: the name of the network to retrieve
83 :param project_id: the id of the network's project
84 :return: a SNAPS-OO Network domain object
88 net_filter['name'] = network_name
90 net_filter['project_id'] = project_id
92 networks = neutron.list_networks(**net_filter)
93 for network, netInsts in networks.items():
95 if inst.get('name') == network_name:
96 return Network(**inst)
100 def get_network_by_id(neutron, network_id):
102 Returns the network object (dictionary) with the given ID
103 :param neutron: the client
104 :param network_id: the id of the network to retrieve
105 :return: a SNAPS-OO Network domain object
107 networks = neutron.list_networks(**{'id': network_id})
108 for network, netInsts in networks.items():
109 for inst in netInsts:
110 if inst.get('id') == network_id:
111 return Network(**inst)
115 def create_subnet(neutron, subnet_settings, os_creds, network=None):
117 Creates a network subnet for OpenStack
118 :param neutron: the client
119 :param network: the network object
120 :param subnet_settings: A dictionary containing the subnet configuration
121 and is responsible for creating the subnet request
123 :param os_creds: the OpenStack credentials
124 :return: a SNAPS-OO Subnet domain object
126 if neutron and network and subnet_settings:
127 json_body = {'subnets': [subnet_settings.dict_for_neutron(
128 os_creds, network=network)]}
129 logger.info('Creating subnet with name ' + subnet_settings.name)
130 subnets = neutron.create_subnet(body=json_body)
131 return Subnet(**subnets['subnets'][0])
133 logger.error("Failed to create subnet.")
137 def delete_subnet(neutron, subnet):
139 Deletes a network subnet for OpenStack
140 :param neutron: the client
141 :param subnet: a SNAPS-OO Subnet domain object
143 if neutron and subnet:
144 logger.info('Deleting subnet with name ' + subnet.name)
145 neutron.delete_subnet(subnet.id)
148 def get_subnet_by_name(neutron, subnet_name):
150 Returns the first subnet object (dictionary) found with a given name
151 :param neutron: the client
152 :param subnet_name: the name of the network to retrieve
153 :return: a SNAPS-OO Subnet domain object
155 subnets = neutron.list_subnets(**{'name': subnet_name})
156 for subnet, subnetInst in subnets.items():
157 for inst in subnetInst:
158 if inst['name'] == subnet_name:
159 return Subnet(**inst)
163 def create_router(neutron, os_creds, router_settings):
165 Creates a router for OpenStack
166 :param neutron: the client
167 :param os_creds: the OpenStack credentials
168 :param router_settings: A dictionary containing the router configuration
169 and is responsible for creating the subnet request
171 :return: a SNAPS-OO Router domain object
174 json_body = router_settings.dict_for_neutron(neutron, os_creds)
175 logger.info('Creating router with name - ' + router_settings.name)
176 os_router = neutron.create_router(json_body)
177 return Router(**os_router['router'])
179 logger.error("Failed to create router.")
183 def delete_router(neutron, router):
185 Deletes a router for OpenStack
186 :param neutron: the client
187 :param router: a SNAPS-OO Router domain object
189 if neutron and router:
190 logger.info('Deleting router with name - ' + router.name)
191 neutron.delete_router(router=router.id)
194 def get_router_by_name(neutron, router_name):
196 Returns the first router object (dictionary) found with a given name
197 :param neutron: the client
198 :param router_name: the name of the network to retrieve
199 :return: a SNAPS-OO Router domain object
201 routers = neutron.list_routers(**{'name': router_name})
202 for router, routerInst in routers.items():
203 for inst in routerInst:
204 if inst.get('name') == router_name:
205 return Router(**inst)
209 def add_interface_router(neutron, router, subnet=None, port=None):
211 Adds an interface router for OpenStack for either a subnet or port.
212 Exception will be raised if requesting for both.
213 :param neutron: the client
214 :param router: the router object
215 :param subnet: the subnet object
216 :param port: the port object
217 :return: the interface router object
220 raise Exception('Cannot add interface to the router. Both subnet and '
221 'port were sent in. Either or please.')
223 if neutron and router and (router or subnet):
224 logger.info('Adding interface to router with name ' + router.name)
225 os_intf_router = neutron.add_interface_router(
226 router=router.id, body=__create_port_json_body(subnet, port))
227 return InterfaceRouter(**os_intf_router)
229 raise Exception('Unable to create interface router as neutron client,'
230 ' router or subnet were not created')
233 def remove_interface_router(neutron, router, subnet=None, port=None):
235 Removes an interface router for OpenStack
236 :param neutron: the client
237 :param router: the SNAPS-OO Router domain object
238 :param subnet: the subnet object (either subnet or port, not both)
239 :param port: the port object
243 logger.info('Removing router interface from router named ' +
245 neutron.remove_interface_router(
247 body=__create_port_json_body(subnet, port))
248 except NotFound as e:
249 logger.warning('Could not remove router interface. NotFound - %s',
253 logger.warning('Could not remove router interface, No router object')
256 def __create_port_json_body(subnet=None, port=None):
258 Returns the dictionary required for creating and deleting router
259 interfaces. Will only work on a subnet or port object. Will throw and
260 exception if parameters contain both or neither
261 :param subnet: the subnet object
262 :param port: the port object
266 raise Exception('Cannot create JSON body with both subnet and port')
267 if not subnet and not port:
268 raise Exception('Cannot create JSON body without subnet or port')
271 return {"subnet_id": subnet.id}
273 return {"port_id": port.id}
276 def create_port(neutron, os_creds, port_settings):
278 Creates a port for OpenStack
279 :param neutron: the client
280 :param os_creds: the OpenStack credentials
281 :param port_settings: the settings object for port configuration
282 :return: the SNAPS-OO Port domain object
284 json_body = port_settings.dict_for_neutron(neutron, os_creds)
285 logger.info('Creating port for network with name - %s',
286 port_settings.network_name)
287 os_port = neutron.create_port(body=json_body)['port']
288 return Port(name=os_port['name'], id=os_port['id'],
289 ips=os_port['fixed_ips'],
290 mac_address=os_port['mac_address'],
291 allowed_address_pairs=os_port['allowed_address_pairs'])
294 def delete_port(neutron, port):
296 Removes an OpenStack port
297 :param neutron: the client
298 :param port: the SNAPS-OO Port domain object
300 logger.info('Deleting port with name ' + port.name)
301 neutron.delete_port(port.id)
304 def get_port_by_name(neutron, port_name):
306 Returns the first port object (dictionary) found with a given name
307 :param neutron: the client
308 :param port_name: the name of the port to retrieve
309 :return: a SNAPS-OO Port domain object
311 ports = neutron.list_ports(**{'name': port_name})
312 for port in ports['ports']:
313 if port['name'] == port_name:
314 return Port(name=port['name'], id=port['id'],
315 ips=port['fixed_ips'], mac_address=port['mac_address'])
319 def create_security_group(neutron, keystone, sec_grp_settings):
321 Creates a security group object in OpenStack
322 :param neutron: the Neutron client
323 :param keystone: the Keystone client
324 :param sec_grp_settings: the security group settings
325 :return: a SNAPS-OO SecurityGroup domain object
327 logger.info('Creating security group with name - %s',
328 sec_grp_settings.name)
329 os_group = neutron.create_security_group(
330 sec_grp_settings.dict_for_neutron(keystone))
331 return SecurityGroup(
332 id=os_group['security_group']['id'],
333 name=os_group['security_group']['name'],
334 project_id=os_group['security_group'].get(
335 'project_id', os_group['security_group'].get('tenant_id')))
338 def delete_security_group(neutron, sec_grp):
340 Deletes a security group object from OpenStack
341 :param neutron: the client
342 :param sec_grp: the SNAPS SecurityGroup object to delete
344 logger.info('Deleting security group with name - %s', sec_grp.name)
345 neutron.delete_security_group(sec_grp.id)
348 def get_security_group(neutron, name):
350 Returns the first security group object of the given name else None
351 :param neutron: the client
352 :param name: the name of security group object to retrieve
353 :return: a SNAPS-OO SecurityGroup domain object or None if not found
355 logger.info('Retrieving security group with name - ' + name)
357 groups = neutron.list_security_groups(**{'name': name})
358 for group in groups['security_groups']:
359 if group['name'] == name:
360 return SecurityGroup(
361 id=group['id'], name=group['name'],
362 project_id=group.get('project_id', group.get('tenant_id')))
366 def get_security_group_by_id(neutron, sec_grp_id):
368 Returns the first security group object of the given name else None
369 :param neutron: the client
370 :param sec_grp_id: the id of the security group to retrieve
371 :return: a SNAPS-OO SecurityGroup domain object or None if not found
373 logger.info('Retrieving security group with ID - ' + sec_grp_id)
375 groups = neutron.list_security_groups(**{'id': sec_grp_id})
376 for group in groups['security_groups']:
377 if group['id'] == sec_grp_id:
378 return SecurityGroup(
379 id=group['id'], name=group['name'],
380 project_id=group.get('project_id', group.get('tenant_id')))
384 def create_security_group_rule(neutron, sec_grp_rule_settings):
386 Creates a security group object in OpenStack
387 :param neutron: the client
388 :param sec_grp_rule_settings: the security group rule settings
389 :return: a SNAPS-OO SecurityGroupRule domain object
391 logger.info('Creating security group to security group - %s',
392 sec_grp_rule_settings.sec_grp_name)
393 os_rule = neutron.create_security_group_rule(
394 sec_grp_rule_settings.dict_for_neutron(neutron))
395 return SecurityGroupRule(**os_rule['security_group_rule'])
398 def delete_security_group_rule(neutron, sec_grp_rule):
400 Deletes a security group object from OpenStack
401 :param neutron: the client
402 :param sec_grp_rule: the SNAPS SecurityGroupRule object to delete
404 logger.info('Deleting security group rule with ID - %s',
406 neutron.delete_security_group_rule(sec_grp_rule.id)
409 def get_rules_by_security_group(neutron, sec_grp):
411 Retrieves all of the rules for a given security group
412 :param neutron: the client
413 :param sec_grp: a list of SNAPS SecurityGroupRule domain objects
415 logger.info('Retrieving security group rules associate with the '
416 'security group - %s', sec_grp.name)
418 rules = neutron.list_security_group_rules(
419 **{'security_group_id': sec_grp.id})
420 for rule in rules['security_group_rules']:
421 if rule['security_group_id'] == sec_grp.id:
422 out.append(SecurityGroupRule(**rule))
426 def get_rule_by_id(neutron, sec_grp, rule_id):
428 Deletes a security group object from OpenStack
429 :param neutron: the client
430 :param sec_grp: the SNAPS SecurityGroup domain object
431 :param rule_id: the rule's ID
432 :param sec_grp: a SNAPS SecurityGroupRule domain object
434 rules = neutron.list_security_group_rules(
435 **{'security_group_id': sec_grp.id})
436 for rule in rules['security_group_rules']:
437 if rule['id'] == rule_id:
438 return SecurityGroupRule(**rule)
442 def get_external_networks(neutron):
444 Returns a list of external OpenStack network object/dict for all external
446 :param neutron: the client
447 :return: a list of external networks of Type SNAPS-OO domain class Network
450 for network in neutron.list_networks(
451 **{'router:external': True})['networks']:
452 out.append(Network(**network))
456 def get_floating_ips(neutron):
458 Returns all of the floating IPs
459 :param neutron: the Neutron client
460 :return: a list of SNAPS FloatingIp objects
463 fips = neutron.list_floatingips()
464 for fip in fips['floatingips']:
465 out.append(FloatingIp(inst_id=fip['id'],
466 ip=fip['floating_ip_address']))
471 def create_floating_ip(neutron, ext_net_name):
473 Returns the floating IP object that was created with this call
474 :param neutron: the Neutron client
475 :param ext_net_name: the name of the external network on which to apply the
477 :return: the SNAPS FloatingIp object
479 logger.info('Creating floating ip to external network - ' + ext_net_name)
480 ext_net = get_network(neutron, ext_net_name)
482 fip = neutron.create_floatingip(
484 {'floating_network_id': ext_net.id}})
486 return FloatingIp(inst_id=fip['floatingip']['id'],
487 ip=fip['floatingip']['floating_ip_address'])
489 raise Exception('Cannot create floating IP, '
490 'external network not found')
493 def get_floating_ip(neutron, floating_ip):
495 Returns a floating IP object that should be identical to the floating_ip
497 :param neutron: the Neutron client
498 :param floating_ip: the SNAPS FloatingIp object
499 :return: hopefully the same floating IP object input
501 logger.debug('Attempting to retrieve existing floating ip with IP - %s',
503 os_fip = __get_os_floating_ip(neutron, floating_ip)
506 inst_id=os_fip['id'], ip=os_fip['floating_ip_address'])
509 def __get_os_floating_ip(neutron, floating_ip):
511 Returns an OpenStack floating IP object
513 :param neutron: the Neutron client
514 :param floating_ip: the SNAPS FloatingIp object
515 :return: hopefully the same floating IP object input
517 logger.debug('Attempting to retrieve existing floating ip with IP - %s',
519 fips = neutron.list_floatingips(ip=floating_ip.id)
521 for fip in fips['floatingips']:
522 if fip['id'] == floating_ip.id:
526 def delete_floating_ip(neutron, floating_ip):
528 Responsible for deleting a floating IP
529 :param neutron: the Neutron client
530 :param floating_ip: the SNAPS FloatingIp object
533 logger.debug('Attempting to delete existing floating ip with IP - %s',
535 return neutron.delete_floatingip(floating_ip.id)