+ def list_resources(self, version=None, options=None):
+ if options is None:
+ options = {}
+ version_manager = VersionManager()
+ version = version_manager.get_version(version)
+ rspec_version = version_manager._get_version(
+ version.type, version.version, 'ad')
+ rspec = RSpec(version=version, user_options=options)
+ nodes = self.get_aggregate_nodes()
+ rspec.version.add_nodes(nodes)
+ return rspec.toxml()
+
+ def describe(self, urns, version=None, options=None):
+ if options is None:
+ options = {}
+ # update nova connection
+ tenant_name = OSXrn(xrn=urns[0], type='slice').get_tenant_name()
+ self.driver.shell.nova_manager.connect(tenant=tenant_name)
+ instances = self.get_instances(urns)
+ # lookup the sliver allocations
+ sliver_ids = [sliver['sliver_id'] for sliver in slivers]
+ constraint = SliverAllocation.sliver_id.in_(sliver_ids)
+ sliver_allocations = self.driver.api.dbsession().query(
+ SliverAllocation).filter(constraint)
+ sliver_allocation_dict = {}
+ for sliver_allocation in sliver_allocations:
+ sliver_allocation_dict[
+ sliver_allocation.sliver_id] = sliver_allocation
+
+ geni_slivers = []
+ rspec_nodes = []
+ for instance in instances:
+ rspec_nodes.append(self.instance_to_rspec_node(instance))
+ geni_sliver = self.instance_to_geni_sliver(
+ instance, sliver_sllocation_dict)
+ geni_slivers.append(geni_sliver)
+ version_manager = VersionManager()
+ version = version_manager.get_version(version)
+ rspec_version = version_manager._get_version(
+ version.type, version.version, 'manifest')
+ rspec = RSpec(version=rspec_version, user_options=options)
+ rspec.xml.set('expires', datetime_to_string(utcparse(time.time())))
+ rspec.version.add_nodes(rspec_nodes)
+ result = {'geni_urn': Xrn(urns[0]).get_urn(),
+ 'geni_rspec': rspec.toxml(),
+ 'geni_slivers': geni_slivers}
+
+ return result
+
+ def get_instances(self, urns):
+ # parse slice names and sliver ids
+ names = set()
+ ids = set()
+ for urn in urns:
+ xrn = OSXrn(xrn=urn)
+ if xrn.type == 'slice':
+ names.add(xrn.get_slice_name())
+ elif xrn.type == 'sliver':
+ ids.add(xrn.leaf)
+
+ # look up instances
+ instances = []
+ filter = {}
+ if names:
+ filter['name'] = names
+ if ids:
+ filter['id'] = ids
+ servers = self.driver.shell.nova_manager.servers.findall(**filter)
+ instances.extend(servers)
+
+ return instances
+
+ def instance_to_rspec_node(self, instance):