7 from collections import defaultdict
8 from nova.exception import ImageNotFound
9 from nova.api.ec2.cloud import CloudController
10 from sfa.util.faults import SfaAPIError
11 from sfa.rspecs.rspec import RSpec
12 from sfa.rspecs.elements.hardware_type import HardwareType
13 from sfa.rspecs.elements.node import Node
14 from sfa.rspecs.elements.sliver import Sliver
15 from sfa.rspecs.elements.login import Login
16 from sfa.rspecs.elements.disk_image import DiskImage
17 from sfa.rspecs.elements.services import Services
18 from sfa.rspecs.elements.interface import Interface
19 from sfa.util.xrn import Xrn
20 from sfa.util.plxrn import PlXrn, hrn_to_pl_slicename
21 from sfa.util.osxrn import OSXrn
22 from sfa.rspecs.version_manager import VersionManager
23 from sfa.openstack.image import ImageManager
24 from sfa.openstack.security_group import SecurityGroup
25 from sfa.util.sfalogging import logger
27 def instance_to_sliver(instance, slice_xrn=None):
29 # * instance.image_ref
30 # * instance.kernel_id
31 # * instance.ramdisk_id
32 import nova.db.sqlalchemy.models
36 if isinstance(instance, dict):
37 # this is an isntance type dict
38 name = instance['name']
39 type = instance['name']
40 elif isinstance(instance, nova.db.sqlalchemy.models.Instance):
41 # this is an object that describes a running instance
42 name = instance.display_name
43 type = instance.instance_type.name
45 raise SfaAPIError("instnace must be an instance_type dict or" + \
46 " a nova.db.sqlalchemy.models.Instance object")
48 xrn = Xrn(slice_xrn, 'slice')
49 sliver_id = xrn.get_sliver_id(instance.project_id, instance.hostname, instance.id)
51 sliver = Sliver({'slice_id': sliver_id,
58 def ec2_id(id=None, type=None):
63 ec2_id = CloudController.image_ec2_id(id, type)
69 def __init__(self, driver):
72 def get_rspec(self, slice_xrn=None, version=None, options={}):
73 version_manager = VersionManager()
74 version = version_manager.get_version(version)
76 rspec_version = version_manager._get_version(version.type, version.version, 'ad')
77 nodes = self.get_aggregate_nodes()
79 rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
80 nodes = self.get_slice_nodes(slice_xrn)
81 rspec = RSpec(version=rspec_version, user_options=options)
82 rspec.version.add_nodes(nodes)
85 def get_availability_zones(self):
86 zones = self.driver.shell.db.zone_get_all()
90 zones = [zone.name for zone in zones]
92 def get_slice_nodes(self, slice_xrn):
93 image_manager = ImageManager(self.driver)
95 zones = self.get_availability_zones()
96 name = hrn_to_pl_slicename(slice_xrn)
97 instances = self.driver.shell.db.instance_get_all_by_project(name)
99 for instance in instances:
102 for fixed_ip in instance.fixed_ips:
103 if_xrn = PlXrn(auth=self.driver.hrn,
104 interface='node%s:eth0' % (instance.hostname))
105 interface = Interface({'component_id': if_xrn.urn})
106 interface['ips'] = [{'address': fixed_ip['address'],
107 'netmask': fixed_ip['network'].netmask,
109 interfaces.append(interface)
110 if instance.availability_zone:
111 node_xrn = OSXrn(instance.availability_zone, 'node')
113 node_xrn = OSXrn('cloud', 'node')
115 rspec_node['component_id'] = node_xrn.urn
116 rspec_node['component_name'] = node_xrn.name
117 rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
118 sliver = instance_to_sliver(instance)
119 disk_image = image_manager.get_disk_image(instance.image_ref)
120 sliver['disk_image'] = [disk_image.to_rspec_object()]
121 rspec_node['slivers'] = [sliver]
122 rspec_node['interfaces'] = interfaces
123 # slivers always provide the ssh service
125 for interface in interfaces:
126 if 'ips' in interface and interface['ips'] and \
127 isinstance(interface['ips'], list):
128 if interface['ips'][0].get('address'):
129 hostname = interface['ips'][0].get('address')
131 login = Login({'authentication': 'ssh-keys',
132 'hostname': hostname,
133 'port':'22', 'username': 'root'})
134 service = Services({'login': login})
135 rspec_node['services'] = [service]
136 rspec_nodes.append(rspec_node)
139 def get_aggregate_nodes(self):
140 zones = self.get_availability_zones()
141 # available sliver/instance/vm types
142 instances = self.driver.shell.db.instance_type_get_all().values()
144 image_manager = ImageManager(self.driver)
145 disk_images = image_manager.get_available_disk_images()
146 disk_image_objects = [image.to_rspec_object() \
147 for image in disk_images]
151 xrn = OSXrn(zone, 'node')
152 rspec_node['component_id'] = xrn.urn
153 rspec_node['component_name'] = xrn.name
154 rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
155 rspec_node['exclusive'] = 'false'
156 rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
157 HardwareType({'name': 'pc'})]
159 for instance in instances:
160 sliver = instance_to_sliver(instance)
161 sliver['disk_image'] = disk_image_objects
162 slivers.append(sliver)
164 rspec_node['slivers'] = slivers
165 rspec_nodes.append(rspec_node)
170 def create_project(self, slicename, users, options={}):
172 Create the slice if it doesn't alredy exist. Create user
173 accounts that don't already exist
175 from nova.exception import ProjectNotFound, UserNotFound
177 username = Xrn(user['urn']).get_leaf()
179 self.driver.shell.auth_manager.get_user(username)
180 except nova.exception.UserNotFound:
181 self.driver.shell.auth_manager.create_user(username)
182 self.verify_user_keys(username, user['keys'], options)
185 slice = self.driver.shell.auth_manager.get_project(slicename)
186 except ProjectNotFound:
187 # assume that the first user is the project manager
188 proj_manager = Xrn(users[0]['urn']).get_leaf()
189 self.driver.shell.auth_manager.create_project(slicename, proj_manager)
191 def verify_user_keys(self, username, keys, options={}):
195 append = options.get('append', True)
196 existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
197 existing_pub_keys = [key.public_key for key in existing_keys]
198 removed_pub_keys = set(existing_pub_keys).difference(keys)
199 added_pub_keys = set(keys).difference(existing_pub_keys)
202 for public_key in added_pub_keys:
204 key['user_id'] = username
205 key['name'] = username
206 key['public_key'] = public_key
207 self.driver.shell.db.key_pair_create(key)
211 for key in existing_keys:
212 if key.public_key in removed_pub_keys:
213 self.driver.shell.db.key_pair_destroy(username, key.name)
216 def create_security_group(self, slicename, fw_rules=[]):
217 # use default group by default
218 group_name = 'default'
219 if isinstance(fw_rules, list) and fw_rules:
220 # Each sliver get's its own security group.
221 # Keep security group names unique by appending some random
223 random_name = "".join([random.choice(string.letters+string.digits)
225 group_name = slicename + random_name
226 security_group = SecurityGroup(self.driver)
227 security_group.create_security_group(group_name)
228 for rule in fw_rules:
229 security_group.add_rule_to_group(group_name,
230 protocol = rule.get('protocol'),
231 cidr_ip = rule.get('cidr_ip'),
232 port_range = rule.get('port_range'),
233 icmp_type_code = rule.get('icmp_type_code'))
236 def add_rule_to_security_group(self, group_name, **kwds):
237 security_group = SecurityGroup(self.driver)
238 security_group.add_rule_to_group(group_name=group_name,
239 protocol=kwds.get('protocol'),
240 cidr_ip =kwds.get('cidr_ip'),
241 icmp_type_code = kwds.get('icmp_type_code'))
244 def reserve_instance(self, image_id, kernel_id, ramdisk_id, \
245 instance_type, key_name, user_data, group_name):
246 conn = self.driver.euca_shell.get_euca_connection()
247 logger.info('Reserving an instance: image: %s, kernel: ' \
248 '%s, ramdisk: %s, type: %s, key: %s' % \
249 (image_id, kernel_id, ramdisk_id,
250 instance_type, key_name))
252 reservation = conn.run_instances(image_id=image_id,
254 ramdisk_id=ramdisk_id,
255 instance_type=instance_type,
257 user_data = user_data,
258 security_groups=[group_name])
260 #min_count=min_count,
261 #max_count=max_count,
263 except Exception, err:
267 def run_instances(self, slicename, rspec, keyname, pubkeys):
269 Create the security groups and instances.
271 # the default image to use for instnaces that dont
272 # explicitly request an image.
273 # Just choose the first available image for now.
274 image_manager = ImageManager(self.driver)
275 available_images = image_manager.get_available_disk_images()
276 default_image_id = None
277 default_aki_id = None
278 default_ari_id = None
279 default_image = available_images[0]
280 default_image_id = ec2_id(default_image.id, default_image.container_format)
281 default_aki_id = ec2_id(default_image.kernel_id, 'aki')
282 default_ari_id = ec2_id(default_image.ramdisk_id, 'ari')
284 # get requested slivers
286 user_data = "\n".join(pubkeys)
287 requested_instances = defaultdict(list)
288 # iterate over clouds/zones/nodes
289 for node in rspec.version.get_nodes_with_slivers():
290 instance_types = node.get('slivers', [])
291 if isinstance(instance_types, list):
292 # iterate over sliver/instance types
293 for instance_type in instance_types:
294 fw_rules = instance_type.get('fw_rules', [])
295 group_name = self.create_security_group(slicename, fw_rules)
296 ami_id = default_image_id
297 aki_id = default_aki_id
298 ari_id = default_ari_id
299 req_image = instance_type.get('disk_image')
300 if req_image and isinstance(req_image, list):
301 req_image_name = req_image[0]['name']
302 disk_image = image_manager.get_disk_image(name=req_image_name)
304 ami_id = ec2_id(disk_image.id, disk_image.container_format)
305 aki_id = ec2_id(disk_image.kernel_id, 'aki')
306 ari_id = ec2_id(disk_image.ramdisk_id, 'ari')
308 self.reserve_instance(image_id=ami_id,
311 instance_type=instance_type['name'],
314 group_name=group_name)
317 def delete_instances(self, project_name):
318 instances = self.driver.shell.db.instance_get_all_by_project(project_name)
319 security_group_manager = SecurityGroup(self.driver)
320 for instance in instances:
321 # deleate this instance's security groups
322 for security_group in instance.security_groups:
323 # dont delete the default security group
324 if security_group.name != 'default':
325 security_group_manager.delete_security_group(security_group.name)
327 self.driver.shell.db.instance_destroy(instance.id)
330 def stop_instances(self, project_name):
331 instances = self.driver.shell.db.instance_get_all_by_project(project_name)
332 for instance in instances:
333 self.driver.shell.db.instance_stop(instance.id)
336 def update_instances(self, project_name):