How to use watchdog method in localstack

Best Python code snippet using localstack_python

test_watchdog.py

Source:test_watchdog.py

1import ctypes2import patroni.watchdog.linux as linuxwd3import sys4import unittest5import os6from mock import patch, Mock, PropertyMock7from patroni.watchdog import Watchdog, WatchdogError8from patroni.watchdog.base import NullWatchdog9from patroni.watchdog.linux import LinuxWatchdogDevice10class MockDevice(object):11    def __init__(self, fd, filename, flag):12        self.fd = fd13        self.filename = filename14        self.flag = flag15        self.timeout = 6016        self.open = True17        self.writes = []18mock_devices = [None]19def mock_open(filename, flag):20    fd = len(mock_devices)21    mock_devices.append(MockDevice(fd, filename, flag))22    return fd23def mock_ioctl(fd, op, arg=None, mutate_flag=False):24    assert 0 < fd < len(mock_devices)25    dev = mock_devices[fd]26    sys.stderr.write("Ioctl %d %d %r\n" % (fd, op, arg))27    if op == linuxwd.WDIOC_GETSUPPORT:28        sys.stderr.write("Get support\n")29        assert(mutate_flag is True)30        arg.options = sum(map(linuxwd.WDIOF.get, ['SETTIMEOUT', 'KEEPALIVEPING']))31        arg.identity = (ctypes.c_ubyte*32)(*map(ord, 'Mock Watchdog'))32    elif op == linuxwd.WDIOC_GETTIMEOUT:33        arg.value = dev.timeout34    elif op == linuxwd.WDIOC_SETTIMEOUT:35        sys.stderr.write("Set timeout called with %s\n" % arg.value)36        assert 0 < arg.value < 6553537        dev.timeout = arg.value - 138    else:39        raise Exception("Unknown op %d", op)40    return 041def mock_write(fd, string):42    assert 0 < fd < len(mock_devices)43    assert len(string) == 144    assert mock_devices[fd].open45    mock_devices[fd].writes.append(string)46def mock_close(fd):47    assert 0 < fd < len(mock_devices)48    assert mock_devices[fd].open49    mock_devices[fd].open = False50@unittest.skipIf(os.name == 'nt', "Windows not supported")51@patch('os.open', mock_open)52@patch('os.write', mock_write)53@patch('os.close', mock_close)54@patch('fcntl.ioctl', mock_ioctl)55class TestWatchdog(unittest.TestCase):56    def setUp(self):57        mock_devices[:] = [None]58    @patch('platform.system', Mock(return_value='Linux'))59    @patch.object(LinuxWatchdogDevice, 'can_be_disabled', PropertyMock(return_value=True))60    def test_unsafe_timeout_disable_watchdog_and_exit(self):61        watchdog = Watchdog({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required', 'safety_margin': -1}})62        self.assertEqual(watchdog.activate(), False)63        self.assertEqual(watchdog.is_running, False)64    @patch('platform.system', Mock(return_value='Linux'))65    @patch.object(LinuxWatchdogDevice, 'get_timeout', Mock(return_value=16))66    def test_timeout_does_not_ensure_safe_termination(self):67        Watchdog({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'auto', 'safety_margin': -1}}).activate()68        self.assertEqual(len(mock_devices), 2)69    @patch('platform.system', Mock(return_value='Linux'))70    @patch.object(Watchdog, 'is_running', PropertyMock(return_value=False))71    def test_watchdog_not_activated(self):72        self.assertFalse(Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'required'}}).activate())73    @patch('platform.system', Mock(return_value='Linux'))74    @patch.object(LinuxWatchdogDevice, 'is_running', PropertyMock(return_value=False))75    def test_watchdog_activate(self):76        with patch.object(LinuxWatchdogDevice, 'open', Mock(side_effect=WatchdogError(''))):77            self.assertTrue(Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'auto'}}).activate())78        self.assertFalse(Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'required'}}).activate())79    @patch('platform.system', Mock(return_value='Linux'))80    def test_basic_operation(self):81        watchdog = Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'required'}})82        watchdog.activate()83        self.assertEqual(len(mock_devices), 2)84        device = mock_devices[-1]85        self.assertTrue(device.open)86        self.assertEqual(device.timeout, 24)87        watchdog.keepalive()88        self.assertEqual(len(device.writes), 1)89        watchdog.disable()90        self.assertFalse(device.open)91        self.assertEqual(device.writes[-1], b'V')92    def test_invalid_timings(self):93        watchdog = Watchdog({'ttl': 30, 'loop_wait': 20, 'watchdog': {'mode': 'automatic', 'safety_margin': -1}})94        watchdog.activate()95        self.assertEqual(len(mock_devices), 1)96        self.assertFalse(watchdog.is_running)97    def test_parse_mode(self):98        with patch('patroni.watchdog.base.logger.warning', new_callable=Mock()) as warning_mock:99            watchdog = Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'bad'}})100            self.assertEqual(watchdog.config.mode, 'off')101            warning_mock.assert_called_once()102    @patch('platform.system', Mock(return_value='Unknown'))103    def test_unsupported_platform(self):104        self.assertRaises(SystemExit, Watchdog, {'ttl': 30, 'loop_wait': 10,105                                                 'watchdog': {'mode': 'required', 'driver': 'bad'}})106    def test_exceptions(self):107        wd = Watchdog({'ttl': 30, 'loop_wait': 10, 'watchdog': {'mode': 'bad'}})108        wd.impl.close = wd.impl.keepalive = Mock(side_effect=WatchdogError(''))109        self.assertTrue(wd.activate())110        self.assertIsNone(wd.keepalive())111        self.assertIsNone(wd.disable())112    @patch('platform.system', Mock(return_value='Linux'))113    def test_config_reload(self):114        watchdog = Watchdog({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})115        self.assertTrue(watchdog.activate())116        self.assertTrue(watchdog.is_running)117        watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'off'}})118        self.assertFalse(watchdog.is_running)119        watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})120        self.assertFalse(watchdog.is_running)121        watchdog.keepalive()122        self.assertTrue(watchdog.is_running)123        watchdog.disable()124        watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required', 'driver': 'unknown'}})125        self.assertFalse(watchdog.is_healthy)126        self.assertFalse(watchdog.activate())127        watchdog.reload_config({'ttl': 30, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})128        self.assertFalse(watchdog.is_running)129        watchdog.keepalive()130        self.assertTrue(watchdog.is_running)131        watchdog.reload_config({'ttl': 60, 'loop_wait': 15, 'watchdog': {'mode': 'required'}})132        watchdog.keepalive()133class TestNullWatchdog(unittest.TestCase):134    def test_basics(self):135        watchdog = NullWatchdog()136        self.assertTrue(watchdog.can_be_disabled)137        self.assertRaises(WatchdogError, watchdog.set_timeout, 1)138        self.assertEqual(watchdog.describe(), 'NullWatchdog')139        self.assertIsInstance(NullWatchdog.from_config({}), NullWatchdog)140@unittest.skipIf(os.name == 'nt', "Windows not supported")141class TestLinuxWatchdogDevice(unittest.TestCase):142    def setUp(self):143        self.impl = LinuxWatchdogDevice.from_config({})144    @patch('os.open', Mock(return_value=3))145    @patch('os.write', Mock(side_effect=OSError))146    @patch('fcntl.ioctl', Mock(return_value=0))147    def test_basics(self):148        self.impl.open()149        try:150            if self.impl.get_support().has_foo:151                self.assertFail()152        except Exception as e:153            self.assertTrue(isinstance(e, AttributeError))154        self.assertRaises(WatchdogError, self.impl.close)155        self.assertRaises(WatchdogError, self.impl.keepalive)156        self.assertRaises(WatchdogError, self.impl.set_timeout, -1)157    @patch('os.open', Mock(return_value=3))158    @patch('fcntl.ioctl', Mock(side_effect=OSError))159    def test__ioctl(self):160        self.assertRaises(WatchdogError, self.impl.get_support)161        self.impl.open()162        self.assertRaises(WatchdogError, self.impl.get_support)163    def test_is_healthy(self):164        self.assertFalse(self.impl.is_healthy)165    @patch('os.open', Mock(return_value=3))166    @patch('fcntl.ioctl', Mock(side_effect=OSError))167    def test_error_handling(self):168        self.impl.open()169        self.assertRaises(WatchdogError, self.impl.get_timeout)170        self.assertRaises(WatchdogError, self.impl.set_timeout, 10)171        # We still try to output a reasonable string even if getting info errors172        self.assertEqual(self.impl.describe(), "Linux watchdog device")173    @patch('os.open', Mock(side_effect=OSError))174    def test_open(self):...

watchdog.py

Source:watchdog.py

...197    """198    Checks if dev is Mellanox type 2 watchdog199    """200    return os.path.exists("{}/{}/timeleft".format(WD_SYSFS_PATH, dev))201def get_watchdog():202    """203    Return WatchdogType1 or WatchdogType2 based on system204    """205    watchdog_main_device_name = None206    for device in os.listdir("/dev/"):207        if device.startswith("watchdog") and is_mlnx_wd_main(device):208            watchdog_main_device_name = device209    if watchdog_main_device_name is None:210        return None211    watchdog_device_path = "/dev/{}".format(watchdog_main_device_name)212    watchdog = None213    if is_wd_type2(watchdog_main_device_name):214        watchdog = WatchdogType2(watchdog_device_path)215    else:...

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