# Copyright 2013-2014 DataStax, 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. try: import unittest2 as unittest except ImportError: import unittest # noqa import cassandra from cassandra.metadata import (Murmur3Token, MD5Token, BytesToken, ReplicationStrategy, NetworkTopologyStrategy, SimpleStrategy, LocalStrategy, NoMurmur3, protect_name, protect_names, protect_value, is_valid_name) from cassandra.policies import SimpleConvictionPolicy from cassandra.pool import Host class TestStrategies(unittest.TestCase): def test_replication_strategy(self): """ Basic code coverage testing that ensures different ReplicationStrategies can be initiated using parameters correctly. """ rs = ReplicationStrategy() self.assertEqual(rs.create('OldNetworkTopologyStrategy', None), None) self.assertEqual(rs.create('xxxxxxOldNetworkTopologyStrategy', None), None) fake_options_map = {'options': 'map'} self.assertIsInstance(rs.create('NetworkTopologyStrategy', fake_options_map), NetworkTopologyStrategy) self.assertEqual(rs.create('NetworkTopologyStrategy', fake_options_map).dc_replication_factors, NetworkTopologyStrategy(fake_options_map).dc_replication_factors) self.assertIsInstance(rs.create('xxxxxxNetworkTopologyStrategy', fake_options_map), NetworkTopologyStrategy) self.assertEqual(rs.create('xxxxxxNetworkTopologyStrategy', fake_options_map).dc_replication_factors, NetworkTopologyStrategy(fake_options_map).dc_replication_factors) fake_options_map = {'options': 'map'} self.assertEqual(rs.create('SimpleStrategy', fake_options_map), None) self.assertEqual(rs.create('xxxxxxSimpleStrategy', fake_options_map), None) fake_options_map = {'options': 'map'} self.assertIsInstance(rs.create('LocalStrategy', fake_options_map), LocalStrategy) self.assertIsInstance(rs.create('xxxxxxLocalStrategy', fake_options_map), LocalStrategy) fake_options_map = {'options': 'map', 'replication_factor': 3} self.assertIsInstance(rs.create('SimpleStrategy', fake_options_map), SimpleStrategy) self.assertEqual(rs.create('SimpleStrategy', fake_options_map).replication_factor, SimpleStrategy(fake_options_map['replication_factor']).replication_factor) self.assertIsInstance(rs.create('xxxxxxSimpleStrategy', fake_options_map), SimpleStrategy) self.assertEqual(rs.create('xxxxxxSimpleStrategy', fake_options_map).replication_factor, SimpleStrategy(fake_options_map['replication_factor']).replication_factor) self.assertEqual(rs.create('xxxxxxxx', fake_options_map), None) self.assertRaises(NotImplementedError, rs.make_token_replica_map, None, None) self.assertRaises(NotImplementedError, rs.export_for_schema) def test_nts_make_token_replica_map(self): token_to_host_owner = {} dc1_1 = Host('dc1.1', SimpleConvictionPolicy) dc1_2 = Host('dc1.2', SimpleConvictionPolicy) dc1_3 = Host('dc1.3', SimpleConvictionPolicy) for host in (dc1_1, dc1_2, dc1_3): host.set_location_info('dc1', 'rack1') token_to_host_owner[MD5Token(0)] = dc1_1 token_to_host_owner[MD5Token(100)] = dc1_2 token_to_host_owner[MD5Token(200)] = dc1_3 dc2_1 = Host('dc2.1', SimpleConvictionPolicy) dc2_2 = Host('dc2.2', SimpleConvictionPolicy) dc2_1.set_location_info('dc2', 'rack1') dc2_2.set_location_info('dc2', 'rack1') token_to_host_owner[MD5Token(1)] = dc2_1 token_to_host_owner[MD5Token(101)] = dc2_2 dc3_1 = Host('dc3.1', SimpleConvictionPolicy) dc3_1.set_location_info('dc3', 'rack3') token_to_host_owner[MD5Token(2)] = dc3_1 ring = [MD5Token(0), MD5Token(1), MD5Token(2), MD5Token(100), MD5Token(101), MD5Token(200)] nts = NetworkTopologyStrategy({'dc1': 2, 'dc2': 2, 'dc3': 1}) replica_map = nts.make_token_replica_map(token_to_host_owner, ring) self.assertItemsEqual(replica_map[MD5Token(0)], (dc1_1, dc1_2, dc2_1, dc2_2, dc3_1)) def test_nts_make_token_replica_map_empty_dc(self): host = Host('1', SimpleConvictionPolicy) host.set_location_info('dc1', 'rack1') token_to_host_owner = {MD5Token(0): host} ring = [MD5Token(0)] nts = NetworkTopologyStrategy({'dc1': 1, 'dc2': 0}) replica_map = nts.make_token_replica_map(token_to_host_owner, ring) self.assertEqual(set(replica_map[MD5Token(0)]), set([host])) def test_nts_export_for_schema(self): # TODO: Cover NetworkTopologyStrategy.export_for_schema() pass def test_simple_strategy_make_token_replica_map(self): host1 = Host('1', SimpleConvictionPolicy) host2 = Host('2', SimpleConvictionPolicy) host3 = Host('3', SimpleConvictionPolicy) token_to_host_owner = { MD5Token(0): host1, MD5Token(100): host2, MD5Token(200): host3 } ring = [MD5Token(0), MD5Token(100), MD5Token(200)] rf1_replicas = SimpleStrategy(1).make_token_replica_map(token_to_host_owner, ring) self.assertItemsEqual(rf1_replicas[MD5Token(0)], [host1]) self.assertItemsEqual(rf1_replicas[MD5Token(100)], [host2]) self.assertItemsEqual(rf1_replicas[MD5Token(200)], [host3]) rf2_replicas = SimpleStrategy(2).make_token_replica_map(token_to_host_owner, ring) self.assertItemsEqual(rf2_replicas[MD5Token(0)], [host1, host2]) self.assertItemsEqual(rf2_replicas[MD5Token(100)], [host2, host3]) self.assertItemsEqual(rf2_replicas[MD5Token(200)], [host3, host1]) rf3_replicas = SimpleStrategy(3).make_token_replica_map(token_to_host_owner, ring) self.assertItemsEqual(rf3_replicas[MD5Token(0)], [host1, host2, host3]) self.assertItemsEqual(rf3_replicas[MD5Token(100)], [host2, host3, host1]) self.assertItemsEqual(rf3_replicas[MD5Token(200)], [host3, host1, host2]) class TestNameEscaping(unittest.TestCase): def test_protect_name(self): """ Test cassandra.metadata.protect_name output """ self.assertEqual(protect_name('tests'), 'tests') self.assertEqual(protect_name('test\'s'), '"test\'s"') self.assertEqual(protect_name('test\'s'), "\"test's\"") self.assertEqual(protect_name('tests ?!@#$%^&*()'), '"tests ?!@#$%^&*()"') self.assertEqual(protect_name('1'), '"1"') self.assertEqual(protect_name('1test'), '"1test"') def test_protect_names(self): """ Test cassandra.metadata.protect_names output """ self.assertEqual(protect_names(['tests']), ['tests']) self.assertEqual(protect_names( [ 'tests', 'test\'s', 'tests ?!@#$%^&*()', '1' ]), [ 'tests', "\"test's\"", '"tests ?!@#$%^&*()"', '"1"' ]) def test_protect_value(self): """ Test cassandra.metadata.protect_value output """ self.assertEqual(protect_value(True), "true") self.assertEqual(protect_value(False), "false") self.assertEqual(protect_value(3.14), '3.14') self.assertEqual(protect_value(3), '3') self.assertEqual(protect_value('test'), "'test'") self.assertEqual(protect_value('test\'s'), "'test''s'") self.assertEqual(protect_value(None), 'NULL') def test_is_valid_name(self): """ Test cassandra.metadata.is_valid_name output """ self.assertEqual(is_valid_name(None), False) self.assertEqual(is_valid_name('test'), True) self.assertEqual(is_valid_name('Test'), False) self.assertEqual(is_valid_name('t_____1'), True) self.assertEqual(is_valid_name('test1'), True) self.assertEqual(is_valid_name('1test1'), False) non_valid_keywords = cassandra.metadata._keywords - cassandra.metadata._unreserved_keywords for keyword in non_valid_keywords: self.assertEqual(is_valid_name(keyword), False) class TestTokens(unittest.TestCase): def test_murmur3_tokens(self): try: murmur3_token = Murmur3Token(cassandra.metadata.MIN_LONG - 1) self.assertEqual(murmur3_token.hash_fn('123'), -7468325962851647638) self.assertEqual(murmur3_token.hash_fn(str(cassandra.metadata.MAX_LONG)), 7162290910810015547) self.assertEqual(str(murmur3_token), '') except NoMurmur3: raise unittest.SkipTest('The murmur3 extension is not available') def test_md5_tokens(self): md5_token = MD5Token(cassandra.metadata.MIN_LONG - 1) self.assertEqual(md5_token.hash_fn('123'), 42767516990368493138776584305024125808L) self.assertEqual(md5_token.hash_fn(str(cassandra.metadata.MAX_LONG)), 28528976619278518853815276204542453639L) self.assertEqual(str(md5_token), '') def test_bytes_tokens(self): bytes_token = BytesToken(str(cassandra.metadata.MIN_LONG - 1)) self.assertEqual(bytes_token.hash_fn('123'), '123') self.assertEqual(bytes_token.hash_fn(123), 123) self.assertEqual(bytes_token.hash_fn(str(cassandra.metadata.MAX_LONG)), str(cassandra.metadata.MAX_LONG)) self.assertEqual(str(bytes_token), "") try: bytes_token = BytesToken(cassandra.metadata.MIN_LONG - 1) self.fail('Tokens for ByteOrderedPartitioner should be only strings') except TypeError: pass