def test_constraint_place_engine_constraint_violated(self):
# Create constraint place engine
image_datastore = "ds1"
image_datastores = [{"name": image_datastore, "used_for_vms": True}]
option = PlacementOption(1, 1, image_datastores)
ds_map = {image_datastore: DatastoreInfo(5, 0)}
ds_mgr = self.create_datastore_manager(ds_map, image_datastores)
engine = ConstraintDiskPlaceEngine(ds_mgr, option)
ds = engine.placeable_datastores()
selector = DatastoreSelector.init_datastore_selector(ds_mgr, ds)
# Try place
disks = [
Disk(disk_id="ds1",
capacity_gb=1,
constraints=[
ResourceConstraint(ResourceConstraintType.DATASTORE,
["ds2"])
]),
]
place_result = engine.place(DisksPlacement(disks, selector))
# Verify place result
assert_that(place_result.result,
equal_to(PlaceResultCode.NO_SUCH_RESOURCE))
def test_constraint_place_engine(self):
# Create constraint place engine
image_datastore = "ds1"
image_datastores = [{"name": image_datastore, "used_for_vms": True}]
option = PlacementOption(1, 1, image_datastores)
ds_map = {
image_datastore: DatastoreInfo(10, 0),
"ds2": DatastoreInfo(20, 0),
"ds3": DatastoreInfo(30, 0)
}
ds_mgr = self.create_datastore_manager(ds_map, image_datastore)
engine = ConstraintDiskPlaceEngine(ds_mgr, option)
ds = engine.placeable_datastores()
selector = DatastoreSelector.init_datastore_selector(ds_mgr, ds)
# Try place
disks = [
Disk(disk_id="disk", capacity_gb=5, constraints=[]),
Disk(disk_id="disk-in-ds1",
capacity_gb=5,
constraints=[
ResourceConstraint(ResourceConstraintType.DATASTORE,
["ds1"])
]),
Disk(disk_id="disk-in-ds2",
capacity_gb=5,
constraints=[
ResourceConstraint(ResourceConstraintType.DATASTORE,
["ds2"])
]),
Disk(disk_id="disk-in-ds3",
capacity_gb=5,
constraints=[
ResourceConstraint(ResourceConstraintType.DATASTORE,
["ds3"])
]),
Disk(capacity_gb=5, constraints=[]),
]
disks_placement = DisksPlacement(disks, selector)
place_result = engine.place(disks_placement)
# Verify place result
assert_that(place_result.result, equal_to(PlaceResultCode.OK))
# Verify placement list and unplaced list
disks_placement = place_result.disks_placement
assert_that(disks_placement.placement_list, has_length(3))
assert_that(disks_placement.disks, has_length(2))
assert_that([d.resource_id for d in disks_placement.placement_list],
contains_inanyorder("disk-in-ds1", "disk-in-ds2",
"disk-in-ds3"))
for placement in disks_placement.placement_list:
assert_that(placement.type, equal_to(AgentResourcePlacement.DISK))
assert_that("disk-in-" + placement.container_id,
equal_to(placement.resource_id))
def __init__(self, hypervisor, option):
self._logger = logging.getLogger(__name__)
self._hypervisor = hypervisor
self._option = option
self._reserved_vms = {}
self._reserved_disks = {}
self._diskutil = DiskUtil()
self._vm_manager = hypervisor.vm_manager
self._image_manager = hypervisor.image_manager
self._datastore_manager = hypervisor.datastore_manager
self._system = hypervisor.system
self._optimal_placement = OptimalPlaceEngine(self._datastore_manager,
option)
self._best_effort_placement = BestEffortPlaceEngine(
self._datastore_manager, option)
self._constrainted_placement = ConstraintDiskPlaceEngine(
self._datastore_manager, option)
