Python Postgresql.follow_the_leader方法代码示例

本文整理汇总了Python中patroni.postgresql.Postgresql.follow_the_leader方法的典型用法代码示例。如果您正苦于以下问题：Python Postgresql.follow_the_leader方法的具体用法？Python Postgresql.follow_the_leader怎么用？Python Postgresql.follow_the_leader使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类patroni.postgresql.Postgresql的用法示例。

在下文中一共展示了Postgresql.follow_the_leader方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: TestPostgresql

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

开发者ID:sean-，项目名称:patroni，代码行数:103，代码来源:test_postgresql.py

示例2: TestPostgresql

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

    @patch('subprocess.call', Mock(return_value=0))
    @patch('psycopg2.connect', psycopg2_connect)
    def setUp(self):
        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'},
                             'pg_rewind': {'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'})
        if not os.path.exists(self.p.data_dir):
            os.makedirs(self.p.data_dir)
        self.leadermem = Member(0, 'leader', 28, {'conn_url': 'postgres://replicator:[email protected]:5435/postgres'})
        self.leader = Leader(-1, 28, self.leadermem)
        self.other = Member(0, 'test1', 28, {'conn_url': 'postgres://replicator:[email protected]:5433/postgres'})
        self.me = Member(0, 'test0', 28, {'conn_url': 'postgres://replicator:[email protected]:5434/postgres'})

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

    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(self):
        self.assertTrue(self.p.start())
        self.p.is_running = false
        open(os.path.join(self.p.data_dir, 'postmaster.pid'), 'w').close()
        self.assertTrue(self.p.start())

    def test_stop(self):
        self.assertTrue(self.p.stop())
        with patch('subprocess.call', Mock(return_value=1)):
            self.assertTrue(self.p.stop())
            self.p.is_running = Mock(return_value=True)
            self.assertFalse(self.p.stop())

    def test_restart(self):
        self.p.start = false
        self.p.is_running = false
        self.assertFalse(self.p.restart())
        self.assertEquals(self.p.state, 'restart failed (restarting)')

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

    @patch('subprocess.call', side_effect=Exception("Test"))
    def test_pg_rewind(self, mock_call):
        self.assertTrue(self.p.rewind(self.leader))
        subprocess.call = mock_call
        self.assertFalse(self.p.rewind(self.leader))

    @patch('patroni.postgresql.Postgresql.rewind', return_value=False)
    @patch('patroni.postgresql.Postgresql.remove_data_directory', MagicMock(return_value=True))
    @patch('patroni.postgresql.Postgresql.single_user_mode', MagicMock(return_value=1))
    def test_follow_the_leader(self, mock_pg_rewind):
        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)
#.........这里部分代码省略.........

开发者ID:alexclear，项目名称:patroni，代码行数:103，代码来源:test_postgresql.py

注：本文中的patroni.postgresql.Postgresql.follow_the_leader方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。