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['name']
19 img['description'] = image['name']
20 img['os'] = image['name']
21 img['version'] = image['name']
27 def __init__(self, driver):
30 def instance_to_sliver(self, instance, slice_xrn=None):
32 # * instance.image_ref
33 # * instance.kernel_id
34 # * instance.ramdisk_id
35 import nova.db.sqlalchemy.models
39 if isinstance(instance, dict):
40 # this is an isntance type dict
41 name = instance['name']
42 type = instance['name']
43 elif isinstance(instance, nova.db.sqlalchemy.models.Instance):
44 # this is an object that describes a running instance
45 name = instance.display_name
46 type = instance.instance_type.name
48 raise SfaAPIError("instnace must be an instance_type dict or" + \
49 " a nova.db.sqlalchemy.models.Instance object")
51 xrn = Xrn(slice_xrn, 'slice')
52 sliver_id = xrn.get_sliver_id(instance.project_id, instance.hostname, instance.id)
54 sliver = Sliver({'slice_id': sliver_id,
56 'type': 'plos-' + type,
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 disk_image['ami'] = image
69 disk_image['aki'] = self.driver.shell.image_manager.show(image['kernel_id'])
70 disk_image['ari'] = self.driver.shell.image_manager.show(image['ramdisk_id'])
73 def get_disk_image(self, id=None, name=None):
75 Look up a image bundle using the specifeid id or name
80 image = self.driver.shell.image_manager.show(image_id)
82 image = self.driver.shell.image_manager.show_by_name(image_name)
83 if image['container_format'] == 'ami':
84 disk_image = self.get_machine_image_details(image)
89 def get_available_disk_images(self):
92 for image in self.driver.shell.image_manager.detail():
93 if image['container_format'] == 'ami':
94 disk_images.append(self.get_machine_image_details(image))
97 def get_rspec(self, slice_xrn=None, version=None, options={}):
98 version_manager = VersionManager()
99 version = version_manager.get_version(version)
101 rspec_version = version_manager._get_version(version.type, version.version, 'ad')
102 nodes = self.get_aggregate_nodes()
104 rspec_version = version_manager._get_version(version.type, version.version, 'manifest')
105 nodes = self.get_slice_nodes(slice_xrn)
106 rspec = RSpec(version=rspec_version, user_options=options)
107 rspec.version.add_nodes(nodes)
110 def get_slice_nodes(self, slice_xrn):
111 name = OSXrn(xrn = slice_xrn).name
112 instances = self.driver.shell.db.instance_get_all_by_project(name)
114 for instance in instances:
116 xrn = OSXrn(instance.hostname, 'node')
117 rspec_node['component_id'] = xrn.urn
118 rspec_node['component_name'] = xrn.name
119 rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
120 sliver = self.instance_to_sliver(instance)
121 disk_image = self.get_disk_image(instance.image_ref)
122 sliver['disk_images'] = [disk_image_to_rspec_object(disk_image)]
123 rspec_node['slivers'] = [sliver]
124 rspec_nodes.append(rspec_node)
127 def get_aggregate_nodes(self):
129 zones = self.driver.shell.db.zone_get_all()
133 zones = [zone.name for zone in zones]
135 # available sliver/instance/vm types
136 instances = self.driver.shell.db.instance_type_get_all().values()
138 disk_images = self.get_available_disk_images()
139 disk_image_objects = [disk_image_to_rspec_object(image) \
140 for image in disk_image]
144 xrn = OSXrn(zone, 'node')
145 rspec_node['component_id'] = xrn.urn
146 rspec_node['component_name'] = xrn.name
147 rspec_node['component_manager_id'] = Xrn(self.driver.hrn, 'authority+cm').get_urn()
148 rspec_node['exclusive'] = 'false'
149 rspec_node['hardware_types'] = [HardwareType({'name': 'plos-pc'}),
150 HardwareType({'name': 'pc'})]
152 for instance in instances:
153 sliver = self.instance_to_sliver(instance)
154 sliver['disk_images'] = disk_image_objects
155 slivers.append(sliver)
157 rspec_node['slivers'] = slivers
158 rspec_nodes.append(rspec_node)
163 def create_project(self, slicename, users, options={}):
165 Create the slice if it doesn't alredy exist
167 import nova.exception.ProjectNotFound
169 slice = self.driver.shell.auth_manager.get_project(slicename)
170 except nova.exception.ProjectNotFound:
171 # convert urns to user names
172 usernames = [Xrn(user['urn']).get_leaf() for user in users]
173 # assume that the first user is the project manager
174 proj_manager = usernames[0]
175 self.driver.shell.auth_manager.create_project(slicename, proj_manager)
177 def create_project_users(self, slicename, users, options={}):
179 Add requested users to the specified slice.
182 # There doesn't seem to be an effcient way to
183 # look up all the users of a project, so lets not
184 # attempt to remove stale users . For now lets just
185 # ensure that the specified users exist
187 username = Xrn(user['urn']).get_leaf()
189 self.driver.shell.auth_manager.get_user(username)
190 except nova.exception.UserNotFound:
191 self.driver.shell.auth_manager.create_user(username)
192 self.verify_user_keys(username, user['keys'], options)
195 def verify_user_keys(self, username, keys, options={}):
199 append = options.get('append', True)
200 existing_keys = self.driver.shell.db.key_pair_get_all_by_user(username)
201 existing_pub_keys = [key.public_key for key in existing_keys]
202 removed_pub_keys = set(existing_pub_keys).difference(keys)
203 added_pub_keys = set(keys).difference(existing_pub_keys)
206 for public_key in added_pub_keys:
208 key['user_id'] = username
209 key['name'] = username
210 key['public'] = public_key
211 self.driver.shell.db.key_pair_create(key)
215 for key in existing_keys:
216 if key.public_key in removed_pub_keys:
217 self.driver.shell.db.key_pair_destroy(username, key.name)
219 def reserve_instance(self, image_id, kernel_id, ramdisk_id, \
220 instance_type, key_name, user_data):
221 conn = self.driver.euca_shell
222 logger.info('Reserving an instance: image: %s, kernel: ' \
223 '%s, ramdisk: %s, type: %s, key: %s' % \
224 (image_id, kernel_id, ramdisk_id,
225 instance_type, key_name))
227 reservation = conn.run_instances(image_id=image_id,
229 ramdisk_id=ramdisk_id,
230 instance_type=instance_type,
232 user_data = user_data)
233 except EC2ResponseError, ec2RespError:
234 logger.log_exc(ec2RespError)
236 def run_instances(self, slicename, rspec, keyname, pubkeys):
238 Create the instances thats requested in the rspec
240 # the default image to use for instnaces that dont
241 # explicitly request an image.
242 # Just choose the first available image for now.
243 available_images = self.get_available_disk_images()
244 default_image = self.get_disk_images()[0]
245 default_ami_id = CloudController.image_ec2_id(default_image['ami']['id'])
246 default_aki_id = CloudController.image_ec2_id(default_image['aki']['id'])
247 default_ari_id = CloudController.image_ec2_id(default_image['ari']['id'])
249 # get requested slivers
251 requested_instances = defaultdict(list)
252 # iterate over clouds/zones/nodes
253 for node in rspec.version.get_nodes_with_slivers():
254 instance_types = node.get('slivers', [])
255 if isinstance(instance_types, list):
256 # iterate over sliver/instance types
257 for instance_type in instance_types:
258 ami_id = default_ami_id
259 aki_id = default_aki_id
260 ari_id = default_ari_id
261 req_image = instance_type.get('disk_images')
262 if req_image and isinstance(req_image, list):
263 req_image_name = req_image[0]['name']
264 disk_image = self.get_disk_image(name=req_image_name)
266 ami_id = CloudController.image_ec2_id(disk_image['ami']['id'])
267 aki_id = CloudController.image_ec2_id(disk_image['aki']['id'])
268 ari_id = CloudController.image_ec2_id(disk_image['ari']['id'])
270 self.reserve_instance(ami_id, aki_id, ari_id, \
271 instance_type['name'], keyname, pubkeys)