Python Postgresql.create_replica方法代码示例

# 需要导入模块: from patroni.postgresql import Postgresql [as 别名]
# 或者: from patroni.postgresql.Postgresql import create_replica [as 别名]
class TestPostgresql(unittest.TestCase):

    def __init__(self, method_name='runTest'):
        self.setUp = self.set_up
        self.tearDown = self.tear_down
        super(TestPostgresql, self).__init__(method_name)

    def set_up(self):
        subprocess.call = subprocess_call
        shutil.copy = nop
        self.p = Postgresql({'name': 'test0', 'scope': 'batman', 'data_dir': 'data/test0',
                             'listen': '127.0.0.1, *:5432', 'connect_address': '127.0.0.2:5432',
                             'pg_hba': ['hostssl all all 0.0.0.0/0 md5', 'host all all 0.0.0.0/0 md5'],
                             'superuser': {'password': ''},
                             'admin': {'username': 'admin', 'password': 'admin'},
                             'replication': {'username': 'replicator',
                                             'password': 'rep-pass',
                                             'network': '127.0.0.1/32'},
                             'parameters': {'foo': 'bar'}, 'recovery_conf': {'foo': 'bar'},
                             'callbacks': {'on_start': 'true', 'on_stop': 'true',
                                           'on_restart': 'true', 'on_role_change': 'true',
                                           'on_reload': 'true'
                                           },
                             'restore': 'true'})
        psycopg2.connect = psycopg2_connect
        if not os.path.exists(self.p.data_dir):
            os.makedirs(self.p.data_dir)
        self.leadermem = Member(0, 'leader', 'postgres://replicator:[email protected]:5435/postgres', None, None, 28)
        self.leader = Leader(-1, None, 28, self.leadermem)
        self.other = Member(0, 'test1', 'postgres://replicator:[email protected]:5433/postgres', None, None, 28)
        self.me = Member(0, 'test0', 'postgres://replicator:[email protected]:5434/postgres', None, None, 28)

    def tear_down(self):
        shutil.rmtree('data')

    def mock_query(self, p):
        raise psycopg2.OperationalError("not supported")

    def test_data_directory_empty(self):
        self.assertTrue(self.p.data_directory_empty())

    def test_initialize(self):
        self.assertTrue(self.p.initialize())
        self.assertTrue(os.path.exists(os.path.join(self.p.data_dir, 'pg_hba.conf')))

    def test_start_stop(self):
        self.assertFalse(self.p.start())
        self.p.is_running = false
        with open(os.path.join(self.p.data_dir, 'postmaster.pid'), 'w'):
            pass
        self.assertTrue(self.p.start())
        self.assertTrue(self.p.stop())

    def test_sync_from_leader(self):
        self.assertTrue(self.p.sync_from_leader(self.leader))

    def test_follow_the_leader(self):
        self.p.demote(self.leader)
        self.p.follow_the_leader(None)
        self.p.demote(self.leader)
        self.p.follow_the_leader(self.leader)
        self.p.follow_the_leader(Leader(-1, None, 28, self.other))

    def test_create_replica(self):
        self.p.delete_trigger_file = raise_exception
        self.assertEquals(self.p.create_replica({'host': '', 'port': '', 'user': ''}, ''), 1)

    def test_create_connection_users(self):
        cfg = self.p.config
        cfg['superuser']['username'] = 'test'
        p = Postgresql(cfg)
        p.create_connection_users()

    def test_sync_replication_slots(self):
        self.p.start()
        cluster = Cluster(True, self.leader, 0, [self.me, self.other, self.leadermem])
        self.p.sync_replication_slots(cluster)

    def test_query(self):
        self.p.query('select 1')
        self.assertRaises(psycopg2.InterfaceError, self.p.query, 'InterfaceError')
        self.assertRaises(psycopg2.OperationalError, self.p.query, 'blabla')
        self.p._connection.closed = 2
        self.assertRaises(psycopg2.OperationalError, self.p.query, 'blabla')
        self.p._connection.closed = 2
        self.p.disconnect = false
        self.assertRaises(psycopg2.OperationalError, self.p.query, 'blabla')

    def test_is_healthiest_node(self):
        cluster = Cluster(True, self.leader, 0, [self.me, self.other, self.leadermem])
        self.assertTrue(self.p.is_healthiest_node(cluster))
        self.p.is_leader = false
        self.assertFalse(self.p.is_healthiest_node(cluster))
        self.p.xlog_position = lambda: 1
        self.assertTrue(self.p.is_healthiest_node(cluster))
        self.p.xlog_position = lambda: 2
        self.assertFalse(self.p.is_healthiest_node(cluster))
        self.p.config['maximum_lag_on_failover'] = -3
        self.assertFalse(self.p.is_healthiest_node(cluster))

#.........这里部分代码省略.........

# 需要导入模块: from patroni.postgresql import Postgresql [as 别名]
# 或者: from patroni.postgresql.Postgresql import create_replica [as 别名]

#.........这里部分代码省略.........
        self.p.demote()
        self.p.follow_the_leader(None)
        self.p.demote()
        self.p.follow_the_leader(self.leader)
        self.p.follow_the_leader(Leader(-1, 28, self.other))
        self.p.rewind = mock_pg_rewind
        self.p.follow_the_leader(self.leader)
        self.p.require_rewind()
        with mock.patch('os.path.islink', MagicMock(return_value=True)):
            with mock.patch('os.unlink', MagicMock(return_value=True)):
                with mock.patch('patroni.postgresql.Postgresql.can_rewind', new_callable=PropertyMock(return_value=True)):
                    self.p.follow_the_leader(self.leader, recovery=True)
        self.p.require_rewind()
        with mock.patch('patroni.postgresql.Postgresql.can_rewind', new_callable=PropertyMock(return_value=True)):
            self.p.rewind.return_value = True
            self.p.follow_the_leader(self.leader, recovery=True)
            self.p.rewind.return_value = False
            self.p.follow_the_leader(self.leader, recovery=True)

    def test_can_rewind(self):
        tmp = self.p.pg_rewind
        self.p.pg_rewind = None
        self.assertFalse(self.p.can_rewind)
        self.p.pg_rewind = tmp
        with mock.patch('subprocess.call', MagicMock(return_value=1)):
            self.assertFalse(self.p.can_rewind)
        with mock.patch('subprocess.call', side_effect=OSError("foo")):
            self.assertFalse(self.p.can_rewind)
        tmp = self.p.controldata()
        self.p.controldata = lambda: {'wal_log_hints setting': 'on'}
        self.assertTrue(self.p.can_rewind)
        self.p.controldata = tmp

    def test_create_replica(self):
        self.p.delete_trigger_file = Mock(side_effect=OSError())
        self.assertEquals(self.p.create_replica({'host': '', 'port': '', 'user': ''}, ''), 1)

    def test_create_connection_users(self):
        cfg = self.p.config
        cfg['superuser']['username'] = 'test'
        p = Postgresql(cfg)
        p.create_connection_users()

    def test_sync_replication_slots(self):
        self.p.start()
        cluster = Cluster(True, self.leader, 0, [self.me, self.other, self.leadermem], None)
        self.p.sync_replication_slots(cluster)
        self.p.query = Mock(side_effect=psycopg2.OperationalError)
        self.p.schedule_load_slots = True
        self.p.sync_replication_slots(cluster)

    @patch.object(MockConnect, 'closed', 2)
    def test__query(self):
        self.assertRaises(PostgresConnectionException, self.p._query, 'blabla')
        self.p._state = 'restarting'
        self.assertRaises(RetryFailedError, self.p._query, 'blabla')

    def test_query(self):
        self.p.query('select 1')
        self.assertRaises(PostgresConnectionException, self.p.query, 'RetryFailedError')
        self.assertRaises(psycopg2.OperationalError, self.p.query, 'blabla')

    def test_is_leader(self):
        self.assertTrue(self.p.is_leader())

    def test_reload(self):

# 需要导入模块: from patroni.postgresql import Postgresql [as 别名]
# 或者: from patroni.postgresql.Postgresql import create_replica [as 别名]

#.........这里部分代码省略.........

        with patch.object(Postgresql, 'restart', Mock(return_value=False)):
            self.p.set_role('replica')
            self.p.follow(None, None)  # restart without rewind
            self.p.set_role('master')

        with patch.object(Postgresql, 'stop', Mock(return_value=False)):
            self.p.follow(self.leader, self.leader)  # failed to stop postgres

        self.p.follow(self.leader, None)  # Leader unknown, can not rewind

        self.p.follow(self.leader, self.leader)  # "leader" is not accessible or is_in_recovery

        with patch.object(Postgresql, 'checkpoint', Mock(return_value=None)):
            self.p.follow(self.leader, self.leader)
            self.p.set_role('master')
            mock_pg_rewind.return_value = True
            self.p.follow(self.leader, self.leader)

        self.p.follow(None, None)  # check_recovery_conf...

    @patch('subprocess.check_output', Mock(return_value=0, side_effect=pg_controldata_string))
    def test_can_rewind(self):
        with patch('subprocess.call', MagicMock(return_value=1)):
            self.assertFalse(self.p.can_rewind)
        with patch('subprocess.call', side_effect=OSError):
            self.assertFalse(self.p.can_rewind)
        with patch.object(Postgresql, 'controldata', Mock(return_value={'wal_log_hints setting': 'on'})):
            self.assertTrue(self.p.can_rewind)
        self.p.config['use_pg_rewind'] = False
        self.assertFalse(self.p.can_rewind)

    @patch('time.sleep', Mock())
    def test_create_replica(self):
        self.p.delete_trigger_file = Mock(side_effect=OSError)
        with patch('subprocess.call', Mock(side_effect=[1, 0])):
            self.assertEquals(self.p.create_replica(self.leader), 0)
        with patch('subprocess.call', Mock(side_effect=[Exception(), 0])):
            self.assertEquals(self.p.create_replica(self.leader), 0)

        self.p.config['create_replica_method'] = ['wale', 'basebackup']
        self.p.config['wale'] = {'command': 'foo'}
        with patch('subprocess.call', Mock(return_value=0)):
            self.assertEquals(self.p.create_replica(self.leader), 0)
            del self.p.config['wale']
            self.assertEquals(self.p.create_replica(self.leader), 0)

        with patch('subprocess.call', Mock(side_effect=Exception("foo"))):
            self.assertEquals(self.p.create_replica(self.leader), 1)

    @patch.object(Postgresql, 'is_running', Mock(return_value=True))
    def test_sync_replication_slots(self):
        self.p.start()
        cluster = Cluster(True, None, self.leader, 0, [self.me, self.other, self.leadermem], None)
        self.p.sync_replication_slots(cluster)
        self.p.query = Mock(side_effect=psycopg2.OperationalError)
        self.p.schedule_load_slots = True
        self.p.sync_replication_slots(cluster)
        self.p.schedule_load_slots = False
        with mock.patch('patroni.postgresql.Postgresql.role', new_callable=PropertyMock(return_value='replica')):
            self.p.sync_replication_slots(cluster)

    @patch.object(MockConnect, 'closed', 2)
    def test__query(self):
        self.assertRaises(PostgresConnectionException, self.p._query, 'blabla')
        self.p._state = 'restarting'

# 需要导入模块: from patroni.postgresql import Postgresql [as 别名]
# 或者: from patroni.postgresql.Postgresql import create_replica [as 别名]

#.........这里部分代码省略.........
        with patch.object(Postgresql, 'pg_rewind', Mock(return_value=False)):
            mock_checkpoint.side_effect = ['1', '', '', '']
            self.p.rewind(self.leader)
            self.p.rewind(self.leader)
            with patch.object(Postgresql, 'check_leader_is_not_in_recovery', Mock(return_value=False)):
                self.p.rewind(self.leader)
            self.p.config['remove_data_directory_on_rewind_failure'] = False
            self.p.trigger_check_diverged_lsn()
            self.p.rewind(self.leader)
        with patch.object(Postgresql, 'is_running', Mock(return_value=True)):
            self.p.rewind(self.leader)
            self.p.is_leader = Mock(return_value=False)
            self.p.rewind(self.leader)

    @patch.object(Postgresql, 'is_running', Mock(return_value=False))
    @patch.object(Postgresql, 'start', Mock())
    def test_follow(self):
        self.p.follow(None)

    @patch('subprocess.check_output', Mock(return_value=0, side_effect=pg_controldata_string))
    def test_can_rewind(self):
        with patch('subprocess.call', MagicMock(return_value=1)):
            self.assertFalse(self.p.can_rewind)
        with patch('subprocess.call', side_effect=OSError):
            self.assertFalse(self.p.can_rewind)
        with patch.object(Postgresql, 'controldata', Mock(return_value={'wal_log_hints setting': 'on'})):
            self.assertTrue(self.p.can_rewind)
        self.p.config['use_pg_rewind'] = False
        self.assertFalse(self.p.can_rewind)

    @patch('time.sleep', Mock())
    @patch.object(Postgresql, 'cancellable_subprocess_call')
    @patch.object(Postgresql, 'remove_data_directory', Mock(return_value=True))
    def test_create_replica(self, mock_cancellable_subprocess_call):
        self.p.delete_trigger_file = Mock(side_effect=OSError)

        self.p.config['create_replica_method'] = ['wale', 'basebackup']
        self.p.config['wale'] = {'command': 'foo'}
        mock_cancellable_subprocess_call.return_value = 0
        self.assertEquals(self.p.create_replica(self.leader), 0)
        del self.p.config['wale']
        self.assertEquals(self.p.create_replica(self.leader), 0)

        mock_cancellable_subprocess_call.return_value = 1
        self.assertEquals(self.p.create_replica(self.leader), 1)

        mock_cancellable_subprocess_call.side_effect = Exception('foo')
        self.assertEquals(self.p.create_replica(self.leader), 1)

        mock_cancellable_subprocess_call.side_effect = [1, 0]
        self.assertEquals(self.p.create_replica(self.leader), 0)

        mock_cancellable_subprocess_call.side_effect = [Exception(), 0]
        self.assertEquals(self.p.create_replica(self.leader), 0)

        self.p.cancel()
        self.assertEquals(self.p.create_replica(self.leader), 1)

    def test_basebackup(self):
        self.p.cancel()
        self.p.basebackup(None, None)

    @patch.object(Postgresql, 'is_running', Mock(return_value=True))
    def test_sync_replication_slots(self):
        self.p.start()
        cluster = Cluster(True, None, self.leader, 0, [self.me, self.other, self.leadermem], None, None, None)

# 需要导入模块: from patroni.postgresql import Postgresql [as 别名]
# 或者: from patroni.postgresql.Postgresql import create_replica [as 别名]

#.........这里部分代码省略.........
            self.assertTrue(self.p.follow(None, None))  # nothing to do, recovery.conf has good primary_conninfo

        self.p.follow(self.me, self.me)  # follow is called when the node is holding leader lock

        with patch.object(Postgresql, 'restart', Mock(return_value=False)):
            self.p.set_role('replica')
            self.p.follow(None, None)  # restart without rewind

        with patch.object(Postgresql, 'stop', Mock(return_value=False)):
            self.p.follow(self.leader, self.leader, need_rewind=True)  # failed to stop postgres

        self.p.follow(self.leader, self.leader)  # "leader" is not accessible or is_in_recovery

        with patch.object(Postgresql, 'checkpoint', Mock(return_value=None)):
            self.p.follow(self.leader, self.leader)
            mock_pg_rewind.return_value = True
            self.p.follow(self.leader, self.leader, need_rewind=True)

        self.p.follow(None, None)  # check_recovery_conf...

    @patch('subprocess.check_output', Mock(return_value=0, side_effect=pg_controldata_string))
    def test_can_rewind(self):
        with patch('subprocess.call', MagicMock(return_value=1)):
            self.assertFalse(self.p.can_rewind)
        with patch('subprocess.call', side_effect=OSError):
            self.assertFalse(self.p.can_rewind)
        with patch.object(Postgresql, 'controldata', Mock(return_value={'wal_log_hints setting': 'on'})):
            self.assertTrue(self.p.can_rewind)
        self.p.config['use_pg_rewind'] = False
        self.assertFalse(self.p.can_rewind)

    @patch('time.sleep', Mock())
    @patch.object(Postgresql, 'remove_data_directory', Mock(return_value=True))
    def test_create_replica(self):
        self.p.delete_trigger_file = Mock(side_effect=OSError)
        with patch('subprocess.call', Mock(side_effect=[1, 0])):
            self.assertEquals(self.p.create_replica(self.leader), 0)
        with patch('subprocess.call', Mock(side_effect=[Exception(), 0])):
            self.assertEquals(self.p.create_replica(self.leader), 0)

        self.p.config['create_replica_method'] = ['wale', 'basebackup']
        self.p.config['wale'] = {'command': 'foo'}
        with patch('subprocess.call', Mock(return_value=0)):
            self.assertEquals(self.p.create_replica(self.leader), 0)
            del self.p.config['wale']
            self.assertEquals(self.p.create_replica(self.leader), 0)

        with patch('subprocess.call', Mock(side_effect=Exception("foo"))):
            self.assertEquals(self.p.create_replica(self.leader), 1)

        with patch('subprocess.call', Mock(return_value=1)):
            self.assertEquals(self.p.create_replica(self.leader), 1)

    @patch.object(Postgresql, 'is_running', Mock(return_value=True))
    def test_sync_replication_slots(self):
        self.p.start()
        cluster = Cluster(True, None, self.leader, 0, [self.me, self.other, self.leadermem], None, None)
        with mock.patch('patroni.postgresql.Postgresql._query', Mock(side_effect=psycopg2.OperationalError)):
            self.p.sync_replication_slots(cluster)
        self.p.sync_replication_slots(cluster)
        with mock.patch('patroni.postgresql.Postgresql.role', new_callable=PropertyMock(return_value='replica')):
            self.p.sync_replication_slots(cluster)
        with mock.patch('patroni.postgresql.logger.error', new_callable=Mock()) as errorlog_mock:
            self.p.query = Mock()
            alias1 = Member(0, 'test-3', 28, {'conn_url': 'postgres://replicator:[email protected]:5436/postgres'})
            alias2 = Member(0, 'test.3', 28, {'conn_url': 'postgres://replicator:[email protected]:5436/postgres'})

# 需要导入模块: from patroni.postgresql import Postgresql [as 别名]
# 或者: from patroni.postgresql.Postgresql import create_replica [as 别名]

#.........这里部分代码省略.........
        self.p.follow(None)
        self.p.follow(self.leader)
        self.p.follow(Leader(-1, 28, self.other))
        self.p.rewind = mock_pg_rewind
        self.p.follow(self.leader)
        with mock.patch('os.path.islink', MagicMock(return_value=True)):
            with mock.patch('patroni.postgresql.Postgresql.can_rewind', new_callable=PropertyMock(return_value=True)):
                with mock.patch('os.unlink', MagicMock(return_value=True)):
                    self.p.follow(self.leader, recovery=True)
        with mock.patch('patroni.postgresql.Postgresql.can_rewind', new_callable=PropertyMock(return_value=True)):
            self.p.rewind.return_value = True
            self.p.follow(self.leader, recovery=True)
            self.p.rewind.return_value = False
            self.p.follow(self.leader, recovery=True)
        with mock.patch('patroni.postgresql.Postgresql.check_recovery_conf', MagicMock(return_value=True)):
            self.assertTrue(self.p.follow(None))

    @patch('subprocess.check_output', Mock(return_value=0, side_effect=pg_controldata_string))
    def test_can_rewind(self):
        tmp = self.p.pg_rewind
        self.p.pg_rewind = None
        self.assertFalse(self.p.can_rewind)
        self.p.pg_rewind = tmp
        with mock.patch('subprocess.call', MagicMock(return_value=1)):
            self.assertFalse(self.p.can_rewind)
        with mock.patch('subprocess.call', side_effect=OSError):
            self.assertFalse(self.p.can_rewind)
        tmp = self.p.controldata
        self.p.controldata = lambda: {'wal_log_hints setting': 'on'}
        self.assertTrue(self.p.can_rewind)
        self.p.controldata = tmp

    @patch('time.sleep', Mock())
    def test_create_replica(self):
        self.p.delete_trigger_file = Mock(side_effect=OSError)
        with patch('subprocess.call', Mock(side_effect=[1, 0])):
            self.assertEquals(self.p.create_replica(self.leader), 0)
        with patch('subprocess.call', Mock(side_effect=[Exception(), 0])):
            self.assertEquals(self.p.create_replica(self.leader), 0)

        self.p.config['create_replica_method'] = ['wale', 'basebackup']
        self.p.config['wale'] = {'command': 'foo'}
        with patch('subprocess.call', Mock(return_value=0)):
            self.assertEquals(self.p.create_replica(self.leader), 0)
            del self.p.config['wale']
            self.assertEquals(self.p.create_replica(self.leader), 0)

        with patch('subprocess.call', Mock(side_effect=Exception("foo"))):
            self.assertEquals(self.p.create_replica(self.leader), 1)

    def test_sync_replication_slots(self):
        self.p.start()
        cluster = Cluster(True, self.leader, 0, [self.me, self.other, self.leadermem], None)
        self.p.sync_replication_slots(cluster)
        self.p.query = Mock(side_effect=psycopg2.OperationalError)
        self.p.schedule_load_slots = True
        self.p.sync_replication_slots(cluster)
        self.p.schedule_load_slots = False
        with mock.patch('patroni.postgresql.Postgresql.role', new_callable=PropertyMock(return_value='replica')):
            self.p.sync_replication_slots(cluster)

    @patch.object(MockConnect, 'closed', 2)
    def test__query(self):
        self.assertRaises(PostgresConnectionException, self.p._query, 'blabla')
        self.p._state = 'restarting'
        self.assertRaises(RetryFailedError, self.p._query, 'blabla')