def test_link_vm(self):
num = 3
vms = [mock.Mock(id=i) for i in range(3)]
n = node.Node(*range(7))
initial_length = len(n.vms)
map(n.link_vm, vms)
self.assertEqual(initial_length + num, len(n.vms))
def from_dicts(cls, name, nodes, flavors, vms, groups):
"""
This method creates cloud structure from dicts parsed from files
We create objects in following order:
1 - create flavor objects
2 - find http://en.wikipedia.org/wiki/Greatest_common_divisor on
all flavor properties
3 - call reduce_resources method on all flavors objects
4 - create all nodes objects
5 - create vm objects assigned linked with node objects and
flavor objects
6 - create group objects linked to vms
"""
nodes_dict, flavors_dict, vms_dict = {}, {}, {}
# create Flavor Objects
for flavor_id, flavor_params in flavors.items():
flavors_dict.update(
{flavor_id: flavor.Flavor(**flavor_params)})
flavors_dict[flavor.default] = flavor.default
# count gcd on Flavors for ram and cores
ram_factor = reduce(
fractions.gcd, [i.ram for i in flavors_dict.values()])
core_factor = reduce(
fractions.gcd, [i.core for i in flavors_dict.values()])
# reduce flavors with core_factor and ram_factor
for flavor_obj in flavors_dict.values():
flavor_obj.reduce_resources(ram_factor, core_factor)
# create Node Objects
for node_name, node_params in nodes.items():
# replace fqdn with just node name
node_name = node_name.split(".")[0]
nodes_dict.update(
{node_name: node.Node(
name=node_name,
ram_factor=ram_factor,
core_factor=core_factor,
**node_params)})
# create Vm objects linked to Nodes and Flavors
for vm_params in vms.values():
node_obj = nodes_dict.get(vm_params.get("host"))
if node_obj is None:
# VM is running on a host which is down
LOG.info("VM '%s' is running on a down host. Skipping.",
vm_params['id'])
continue
flavor_obj = flavors_dict.get(vm_params.get("flavor"))
vms_dict.update({vm_params.get("id"): vm.Vm(
node=node_obj,
vm_id=vm_params.get("id"),
flavor=flavor_obj)})
# create Groups objects
groups = group.Group.from_dict(groups, vms_dict)
return cls(name, nodes_dict, groups)
def test_calculate_flavors_required(self):
n = node.Node(*range(1, 8))
self.assertEqual(dict, type(n.calculate_flavors_required({})))
def test_potential_utilization(self):
n = node.Node(*range(1, 8))
self.assertEqual(tuple, type(n.potential_utilization({})))
def test_utilization(self):
n = node.Node(*range(1, 8))
self.assertEqual(tuple, type(n.utilization))
def test_free_resources(self):
n = node.Node(*range(1, 8))
self.assertEqual(tuple, type(n.free_resources))
def test_is_full(self):
n = node.Node(*range(1, 8))
self.assertEqual(bool, type(n.is_full))