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# -*- coding: utf-8 -*-
#
# Copyright © 2016 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import six
from tooz import coordination
from tooz import tests
class TestPartitioner(tests.TestWithCoordinator):
def setUp(self):
super(TestPartitioner, self).setUp()
self._extra_coords = []
def tearDown(self):
for c in self._extra_coords:
c.stop()
super(TestPartitioner, self).tearDown()
def _add_members(self, number_of_members, weight=1):
groups = []
for _ in six.moves.range(number_of_members):
m = tests.get_random_uuid()
coord = coordination.get_coordinator(self.url, m)
coord.start()
groups.append(coord.join_partitioned_group(
self.group_id, weight=weight))
self._extra_coords.append(coord)
self._coord.run_watchers()
return groups
def _remove_members(self, number_of_members):
for _ in six.moves.range(number_of_members):
c = self._extra_coords.pop()
c.stop()
self._coord.run_watchers()
def test_join_partitioned_group(self):
group_id = tests.get_random_uuid()
self._coord.join_partitioned_group(group_id)
def test_hashring_size(self):
p = self._coord.join_partitioned_group(self.group_id)
self.assertEqual(1, len(p.ring.nodes))
self._add_members(1)
self.assertEqual(2, len(p.ring.nodes))
self._add_members(2)
self.assertEqual(4, len(p.ring.nodes))
self._remove_members(3)
self.assertEqual(1, len(p.ring.nodes))
p.stop()
def test_hashring_weight(self):
p = self._coord.join_partitioned_group(self.group_id, weight=5)
self.assertEqual([5], list(p.ring.nodes.values()))
p2 = self._add_members(1, weight=10)[0]
self.assertEqual(set([5, 10]), set(p.ring.nodes.values()))
self.assertEqual(set([5, 10]), set(p2.ring.nodes.values()))
p.stop()
def test_stop(self):
p = self._coord.join_partitioned_group(self.group_id)
p.stop()
self.assertEqual(0, len(self._coord._hooks_join_group))
self.assertEqual(0, len(self._coord._hooks_leave_group))
def test_members_of_object_and_others(self):
p = self._coord.join_partitioned_group(self.group_id)
self._add_members(3)
o = object()
m = p.members_for_object(o)
self.assertEqual(1, len(m))
m = m.pop()
self.assertTrue(p.belongs_to_member(o, m))
self.assertFalse(p.belongs_to_member(o, b"chupacabra"))
maybe = self.assertTrue if m == self.member_id else self.assertFalse
maybe(p.belongs_to_self(o))
p.stop()
class ZakeTestPartitioner(TestPartitioner):
url = "zake://"
class IPCTestPartitioner(TestPartitioner):
url = "ipc://"
class FileTestPartitioner(TestPartitioner):
url = "file:///tmp"
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