231 lines
9.4 KiB
Python
231 lines
9.4 KiB
Python
# Copyright (c) 2012-2013 Rackspace Hosting
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Unit Tests for cells scheduler filters.
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"""
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from nova.cells import filters
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from nova.cells import state
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from nova import context
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from nova.db.sqlalchemy import models
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from nova import test
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from nova.tests.unit.cells import fakes
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class FiltersTestCase(test.NoDBTestCase):
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"""Makes sure the proper filters are in the directory."""
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def test_all_filters(self):
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filter_classes = filters.all_filters()
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class_names = [cls.__name__ for cls in filter_classes]
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self.assertIn("TargetCellFilter", class_names)
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self.assertIn("DifferentCellFilter", class_names)
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class _FilterTestClass(test.NoDBTestCase):
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"""Base class for testing individual filter plugins."""
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filter_cls_name = None
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def setUp(self):
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super(_FilterTestClass, self).setUp()
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fakes.init(self)
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self.msg_runner = fakes.get_message_runner('api-cell')
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self.scheduler = self.msg_runner.scheduler
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self.my_cell_state = self.msg_runner.state_manager.get_my_state()
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self.filter_handler = filters.CellFilterHandler()
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filter_classes = self.filter_handler.get_matching_classes(
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[self.filter_cls_name])
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self.filters = [cls() for cls in filter_classes]
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self.context = context.RequestContext('fake', 'fake',
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is_admin=True)
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def _filter_cells(self, cells, filter_properties):
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return self.filter_handler.get_filtered_objects(self.filters,
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cells,
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filter_properties)
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class ImagePropertiesFilter(_FilterTestClass):
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filter_cls_name = \
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'nova.cells.filters.image_properties.ImagePropertiesFilter'
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def setUp(self):
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super(ImagePropertiesFilter, self).setUp()
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self.cell1 = models.Cell()
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self.cell2 = models.Cell()
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self.cell3 = models.Cell()
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self.cells = [self.cell1, self.cell2, self.cell3]
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for cell in self.cells:
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cell.capabilities = {}
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self.filter_props = {'context': self.context, 'request_spec': {}}
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def test_missing_image_properties(self):
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self.assertEqual(self.cells,
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self._filter_cells(self.cells, self.filter_props))
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def test_missing_hypervisor_version_requires(self):
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self.filter_props['request_spec'] = {'image': {'properties': {}}}
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for cell in self.cells:
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cell.capabilities = {"prominent_hypervisor_version": set([u"6.2"])}
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self.assertEqual(self.cells,
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self._filter_cells(self.cells, self.filter_props))
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def test_missing_hypervisor_version_in_cells(self):
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image = {'properties': {'hypervisor_version_requires': '>6.2.1'}}
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self.filter_props['request_spec'] = {'image': image}
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self.cell1.capabilities = {"prominent_hypervisor_version": set([])}
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self.assertEqual(self.cells,
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self._filter_cells(self.cells, self.filter_props))
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def test_cells_matching_hypervisor_version(self):
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image = {'properties': {'hypervisor_version_requires': '>6.0, <=6.3'}}
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self.filter_props['request_spec'] = {'image': image}
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self.cell1.capabilities = {"prominent_hypervisor_version":
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set([u"6.2"])}
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self.cell2.capabilities = {"prominent_hypervisor_version":
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set([u"6.3"])}
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self.cell3.capabilities = {"prominent_hypervisor_version":
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set([u"6.0"])}
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self.assertEqual([self.cell1, self.cell2],
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self._filter_cells(self.cells, self.filter_props))
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# assert again to verify filter doesn't mutate state
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# LP bug #1325705
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self.assertEqual([self.cell1, self.cell2],
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self._filter_cells(self.cells, self.filter_props))
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class TestTargetCellFilter(_FilterTestClass):
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filter_cls_name = 'nova.cells.filters.target_cell.TargetCellFilter'
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def test_missing_scheduler_hints(self):
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cells = [1, 2, 3]
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# No filtering
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filter_props = {'context': self.context}
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self.assertEqual(cells, self._filter_cells(cells, filter_props))
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def test_no_target_cell_hint(self):
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cells = [1, 2, 3]
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filter_props = {'scheduler_hints': {},
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'context': self.context}
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# No filtering
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self.assertEqual(cells, self._filter_cells(cells, filter_props))
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def test_target_cell_specified_me(self):
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cells = [1, 2, 3]
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target_cell = 'fake!cell!path'
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current_cell = 'fake!cell!path'
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filter_props = {'scheduler_hints': {'target_cell': target_cell},
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'routing_path': current_cell,
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'scheduler': self.scheduler,
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'context': self.context}
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# Only myself in the list.
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self.assertEqual([self.my_cell_state],
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self._filter_cells(cells, filter_props))
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def test_target_cell_specified_me_but_not_admin(self):
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ctxt = context.RequestContext('fake', 'fake')
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cells = [1, 2, 3]
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target_cell = 'fake!cell!path'
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current_cell = 'fake!cell!path'
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filter_props = {'scheduler_hints': {'target_cell': target_cell},
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'routing_path': current_cell,
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'scheduler': self.scheduler,
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'context': ctxt}
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# No filtering, because not an admin.
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self.assertEqual(cells, self._filter_cells(cells, filter_props))
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def test_target_cell_specified_not_me(self):
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info = {}
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def _fake_build_instances(self, ctxt, cell, sched_kwargs):
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info['ctxt'] = ctxt
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info['cell'] = cell
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info['sched_kwargs'] = sched_kwargs
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self.stub_out('nova.cells.messaging.MessageRunner.build_instances',
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_fake_build_instances)
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cells = [1, 2, 3]
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target_cell = 'fake!cell!path'
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current_cell = 'not!the!same'
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filter_props = {'scheduler_hints': {'target_cell': target_cell},
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'routing_path': current_cell,
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'scheduler': self.scheduler,
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'context': self.context,
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'host_sched_kwargs': 'meow'}
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# None is returned to bypass further scheduling.
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self.assertIsNone(self._filter_cells(cells, filter_props))
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# The filter should have re-scheduled to the child cell itself.
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expected_info = {'ctxt': self.context,
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'cell': 'fake!cell!path',
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'sched_kwargs': 'meow'}
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self.assertEqual(expected_info, info)
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class TestDifferentCellFilter(_FilterTestClass):
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filter_cls_name = 'nova.cells.filters.different_cell.DifferentCellFilter'
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def setUp(self):
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super(TestDifferentCellFilter, self).setUp()
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# We only load one filter so we know the first one is the one we want
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self.policy.set_rules({'cells_scheduler_filter:DifferentCellFilter':
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''})
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self.cells = [state.CellState('1'),
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state.CellState('2'),
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state.CellState('3')]
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def test_missing_scheduler_hints(self):
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filter_props = {'context': self.context}
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# No filtering
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self.assertEqual(self.cells,
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self._filter_cells(self.cells, filter_props))
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def test_no_different_cell_hint(self):
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filter_props = {'scheduler_hints': {},
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'context': self.context}
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# No filtering
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self.assertEqual(self.cells,
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self._filter_cells(self.cells, filter_props))
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def test_different_cell(self):
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filter_props = {'scheduler_hints': {'different_cell': 'fake!2'},
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'routing_path': 'fake',
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'context': self.context}
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filtered_cells = self._filter_cells(self.cells, filter_props)
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self.assertEqual(2, len(filtered_cells))
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self.assertNotIn(self.cells[1], filtered_cells)
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def test_different_multiple_cells(self):
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filter_props = {'scheduler_hints':
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{'different_cell': ['fake!1', 'fake!2']},
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'routing_path': 'fake',
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'context': self.context}
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filtered_cells = self._filter_cells(self.cells, filter_props)
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self.assertEqual(1, len(filtered_cells))
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self.assertNotIn(self.cells[0], filtered_cells)
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self.assertNotIn(self.cells[1], filtered_cells)
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def test_different_cell_specified_me_not_authorized(self):
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self.policy.set_rules({'cells_scheduler_filter:DifferentCellFilter':
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'!'})
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filter_props = {'scheduler_hints': {'different_cell': 'fake!2'},
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'routing_path': 'fake',
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'context': self.context}
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# No filtering, because not an admin.
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self.assertEqual(self.cells,
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self._filter_cells(self.cells, filter_props))
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