1 from nova.exception import ImageNotFound
2 from nova.api.ec2.cloud import CloudController
3 from sfa.util.faults import SfaAPIError
4 from sfa.rspecs.rspec import RSpec
5 from sfa.rspecs.elements.hardware_type import HardwareType
6 from sfa.rspecs.elements.node import Node
7 from sfa.rspecs.elements.sliver import Sliver
8 from sfa.rspecs.elements.login import Login
9 from sfa.rspecs.elements.disk_image import DiskImage
10 from sfa.rspecs.elements.services import Services
11 from sfa.util.xrn import Xrn
12 from sfa.util.osxrn import OSXrn
13 from sfa.rspecs.version_manager import VersionManager
16 def disk_image_to_rspec_object(image):
18 img['name'] = image['ami']['name']
19 img['description'] = image['ami']['name']
20 img['os'] = image['ami']['name']
21 img['version'] = image['ami']['name']
25 def instance_to_sliver(instance, slice_xrn=None):
27 # * instance.image_ref
28 # * instance.kernel_id
29 # * instance.ramdisk_id
30 import nova.db.sqlalchemy.models
34 if isinstance(instance, dict):
35 # this is an isntance type dict
36 name = instance['name']
37 type = instance['name']
38 elif isinstance(instance, nova.db.sqlalchemy.models.Instance):
39 # this is an object that describes a running instance
40 name = instance.display_name
41 type = instance.instance_type.name
43 raise SfaAPIError("instnace must be an instance_type dict or" + \
44 " a nova.db.sqlalchemy.models.Instance object")
46 xrn = Xrn(slice_xrn, 'slice')
47 sliver_id = xrn.get_sliver_id(instance.project_id, instance.hostname, instance.id)
49 sliver = Sliver({'slice_id': sliver_id,
51 'type': 'plos-' + type,
58 def __init__(self, driver):
61 def get_machine_image_details(self, image):
63 Returns a dict that contains the ami, aki and ari details for the specified
67 if image['container_format'] == 'ami':
68 kernel_id = image['properties']['kernel_id']
69 ramdisk_id = image['properties']['ramdisk_id']
70 disk_image['ami'] = image
71 disk_image['aki'] = self.driver.shell.image_manager.show(kernel_id)
72 disk_image['ari'] = self.driver.shell.image_manager.show(ramdisk_id)
75 def get_disk_image(self, id=None, name=None):
77 Look up a image bundle using the specifeid id or name
82 image = self.driver.shell.image_manager.show(image_id)
84 image = self.driver.shell.image_manager.show_by_name(image_name)
85 if image['container_format'] == 'ami':
86 disk_image = self.get_machine_image_details(image)
91 def get_available_disk_images(self):
94 for image in self.driver.shell.image_manager.detail():
95 if image['container_format'] == 'ami':
96 disk_images.append(self.get_machine_image_details(image))
99 def get_rspec(self, slice_xrn=None, version=None, options={}):
100 version_manager = VersionManager()
101 version = version_manager.get_version(version)
103 rspec_version = version_manager._get_version(version.type, version.version, 'ad')
104 nodes = self.get_aggregate_nodes()
106 rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
107 nodes = self.get_slice_nodes(slice_xrn)
108 rspec = RSpec(version=rspec_version, user_options=options)
109 rspec.version.add_nodes(nodes)
112 def get_slice_nodes(self, slice_xrn):
113 name = OSXrn(xrn = slice_xrn).name
114 instances = self.driver.shell.db.instance_get_all_by_project(name)
116 for instance in instances:
118 xrn = OSXrn(instance.hostname, 'node')
119 rspec_node['component_id'] = xrn.urn
120 rspec_node['component_name'] = xrn.name
121 rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
122 sliver = instance_to_sliver(instance)
123 disk_image = self.get_disk_image(instance.image_ref)
124 sliver['disk_images'] = [disk_image_to_rspec_object(disk_image)]
125 rspec_node['slivers'] = [sliver]
126 rspec_nodes.append(rspec_node)
129 def get_aggregate_nodes(self):
131 zones = self.driver.shell.db.zone_get_all()
135 zones = [zone.name for zone in zones]
137 # available sliver/instance/vm types
138 instances = self.driver.shell.db.instance_type_get_all().values()
140 disk_images = self.get_available_disk_images()
141 disk_image_objects = [disk_image_to_rspec_object(image) \
142 for image in disk_images]
146 xrn = OSXrn(zone, 'node')
147 rspec_node['component_id'] = xrn.urn
148 rspec_node['component_name'] = xrn.name
149 rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
150 rspec_node['exclusive'] = 'false'
151 rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
152 HardwareType({'name': 'pc'})]
154 for instance in instances:
155 sliver = instance_to_sliver(instance)
156 sliver['disk_images'] = disk_image_objects
157 slivers.append(sliver)
159 rspec_node['slivers'] = slivers
160 rspec_nodes.append(rspec_node)
165 def create_project(self, slicename, users, options={}):
167 Create the slice if it doesn't alredy exist
169 import nova.exception.ProjectNotFound
171 slice = self.driver.shell.auth_manager.get_project(slicename)
172 except nova.exception.ProjectNotFound:
173 # convert urns to user names
174 usernames = [Xrn(user['urn']).get_leaf() for user in users]
175 # assume that the first user is the project manager
176 proj_manager = usernames[0]
177 self.driver.shell.auth_manager.create_project(slicename, proj_manager)
179 def create_project_users(self, slicename, users, options={}):
181 Add requested users to the specified slice.
184 # There doesn't seem to be an effcient way to
185 # look up all the users of a project, so lets not
186 # attempt to remove stale users . For now lets just
187 # ensure that the specified users exist
189 username = Xrn(user['urn']).get_leaf()
191 self.driver.shell.auth_manager.get_user(username)
192 except nova.exception.UserNotFound:
193 self.driver.shell.auth_manager.create_user(username)
194 self.verify_user_keys(username, user['keys'], options)
197 def verify_user_keys(self, username, keys, options={}):
201 append = options.get('append', True)
202 existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
203 existing_pub_keys = [key.public_key for key in existing_keys]
204 removed_pub_keys = set(existing_pub_keys).difference(keys)
205 added_pub_keys = set(keys).difference(existing_pub_keys)
208 for public_key in added_pub_keys:
210 key['user_id'] = username
211 key['name'] = username
212 key['public'] = public_key
213 self.driver.shell.db.key_pair_create(key)
217 for key in existing_keys:
218 if key.public_key in removed_pub_keys:
219 self.driver.shell.db.key_pair_destroy(username, key.name)
221 def reserve_instance(self, image_id, kernel_id, ramdisk_id, \
222 instance_type, key_name, user_data):
223 conn = self.driver.euca_shell
224 logger.info('Reserving an instance: image: %s, kernel: ' \
225 '%s, ramdisk: %s, type: %s, key: %s' % \
226 (image_id, kernel_id, ramdisk_id,
227 instance_type, key_name))
229 reservation = conn.run_instances(image_id=image_id,
231 ramdisk_id=ramdisk_id,
232 instance_type=instance_type,
234 user_data = user_data)
235 #security_groups=group_names,
237 #min_count=min_count,
238 #max_count=max_count,
240 except EC2ResponseError, ec2RespError:
241 logger.log_exc(ec2RespError)
243 def run_instances(self, slicename, rspec, keyname, pubkeys):
245 Create the instances thats requested in the rspec
247 # the default image to use for instnaces that dont
248 # explicitly request an image.
249 # Just choose the first available image for now.
250 available_images = self.get_available_disk_images()
251 default_image = self.get_disk_images()[0]
252 default_ami_id = CloudController.image_ec2_id(default_image['ami']['id'])
253 default_aki_id = CloudController.image_ec2_id(default_image['aki']['id'])
254 default_ari_id = CloudController.image_ec2_id(default_image['ari']['id'])
256 # get requested slivers
258 requested_instances = defaultdict(list)
259 # iterate over clouds/zones/nodes
260 for node in rspec.version.get_nodes_with_slivers():
261 instance_types = node.get('slivers', [])
262 if isinstance(instance_types, list):
263 # iterate over sliver/instance types
264 for instance_type in instance_types:
265 ami_id = default_ami_id
266 aki_id = default_aki_id
267 ari_id = default_ari_id
268 req_image = instance_type.get('disk_images')
269 if req_image and isinstance(req_image, list):
270 req_image_name = req_image[0]['name']
271 disk_image = self.get_disk_image(name=req_image_name)
273 ami_id = CloudController.image_ec2_id(disk_image['ami']['id'])
274 aki_id = CloudController.image_ec2_id(disk_image['aki']['id'])
275 ari_id = CloudController.image_ec2_id(disk_image['ari']['id'])
277 self.reserve_instance(ami_id, aki_id, ari_id, \
278 instance_type['name'], keyname, pubkeys)