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 __init__(self, agent_config): self._logger = logging.getLogger(__name__) self._config = agent_config if self._config.hypervisor == "esx": from esx.hypervisor import EsxHypervisor # This will throw an error if it can't connect to the local vim. self.hypervisor = EsxHypervisor(agent_config) elif self._config.hypervisor == "fake": from fake.hypervisor import FakeHypervisor self.hypervisor = FakeHypervisor(agent_config) else: raise ValueError("Invalid hypervisor") """ The creation of the Hypervisors above translates datastore names into datastore ids. Methods that access datastores through this class should use datastore ids. """ self.datastore_manager = self.hypervisor.datastore_manager self.disk_manager = self.hypervisor.disk_manager self.image_manager = self.hypervisor.image_manager self.vm_manager = self.hypervisor.vm_manager self.network_manager = self.hypervisor.network_manager self.system = self.hypervisor.system options = PlacementOption(agent_config.memory_overcommit, agent_config.cpu_overcommit, agent_config.image_datastores) self.placement_manager = PlacementManager(self, options) self.image_monitor = ImageMonitor(self.datastore_manager, self.image_manager, self.vm_manager)
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 build(self): hypervisor = MagicMock() hypervisor.datastore_manager = MagicMock() hypervisor.datastore_manager.vm_datastores.return_value = \ [ds for ds in self.ds_map.keys() if ds != self.image_ds] hypervisor.datastore_manager.image_datastore.return_value = \ self.image_ds hypervisor.datastore_manager.get_datastore_ids.return_value = \ self.ds_map.keys() hypervisor.datastore_manager.datastore_info = self.datastore_info hypervisor.datastore_manager.normalize.side_effect = self.normalize hypervisor.datastore_manager.get_datastores.return_value = \ [Datastore(id=ds_id, tags=self.ds_map[ds_id][1]) for ds_id in self.ds_map.keys()] hypervisor.network_manager.get_vm_networks.return_value = \ self.vm_networks hypervisor.system = MagicMock() hypervisor.system.total_vmusable_memory_mb.return_value = \ self.total_mem hypervisor.system.host_version.return_value = \ self.host_version hypervisor.system.num_physical_cpus.return_value = 1 hypervisor.image_manager = MagicMock() hypervisor.image_manager.get_image_id_from_disks.return_value = \ self.image_id hypervisor.image_manager.check_image = self.check_image hypervisor.image_manager.image_size.return_value = self.image_size hypervisor.vm_manager = MagicMock() hypervisor.vm_manager.get_used_memory_mb.return_value = 0 placement_option = PlacementOption(self.mem_overcommit, self.cpu_overcommit, self.image_datastores) return PlacementManager(hypervisor, placement_option)
def test_optimal_place_engine(self, result, ratio, disk_sizes, use_image_ds): # Create optimal place engine image_datastore = "datastore_id_1" image_datastores = [{ "name": image_datastore, "used_for_vms": use_image_ds }] option = PlacementOption(1, 1, image_datastores) ds_map = { "datastore_id_1": DatastoreInfo(1 * 1024, 0), "datastore_id_2": DatastoreInfo(2 * 1024, 0), "datastore_id_3": DatastoreInfo(3 * 1024, 0) } ds_mgr = self.create_datastore_manager(ds_map, image_datastore) engine = OptimalPlaceEngine(ds_mgr, option) ds = engine.placeable_datastores() selector = DatastoreSelector.init_datastore_selector(ds_mgr, ds) disks_placement = DisksPlacement(self.create_disks(disk_sizes), selector) # Verify place result place_result = engine.place(disks_placement) assert_that(place_result.result, equal_to(result)) assert_that(place_result.disks_placement.selector.ratio(), equal_to(ratio)) # Verify placements if disk_sizes and place_result.result == PlaceResultCode.OK: placement_list = place_result.disks_placement.placement_list assert_that(placement_list, has_length(1)) assert_that(placement_list[0].type, equal_to(AgentResourcePlacement.DISK)) assert_that(placement_list[0].container_id, equal_to("datastore_id_3"))
def test_best_effort_place_engine(self, result, ratio, disk_sizes, places, use_image_ds): # Create best effort place engine image_datastore = "ds1" image_datastores = [{ "name": image_datastore, "used_for_vms": use_image_ds }] 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 = BestEffortPlaceEngine(ds_mgr, option) ds = engine.placeable_datastores() selector = DatastoreSelector.init_datastore_selector(ds_mgr, ds) disks_placement = DisksPlacement(self.create_disks(disk_sizes), selector) # Try place place_result = engine.place(disks_placement) # Verify place result assert_that(place_result.result, equal_to(result)) # Verify placements if disk_sizes and place_result.result == PlaceResultCode.OK: assert_that(place_result.disks_placement.selector.ratio(), equal_to(ratio)) for i, place in enumerate(places): placement_list = place_result.disks_placement.placement_list assert_that(placement_list[0].type, equal_to(AgentResourcePlacement.DISK)) assert_that(placement_list[i].container_id, equal_to(place))