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How to use worker_process method in lettuce_webdriver

Best Python code snippet using lettuce_webdriver_python

watchdog.py

Source:watchdog.py

1import multiprocessing2import signal3import os4import sys5import select6import logging7import time8from importlib import reload9watchdog_logger = logging.getLogger('watchdog')10def run_monitored(f, heartbeat_timeout=5*60, kill_signal=signal.SIGTERM, select_timeout=15, always_restart=True):11    def monitored(*args, **kwargs):12        read_fd, write_fd = os.pipe()13        stop_now = False14        exit_code = 015        def heartbeat_func():16            os.write(write_fd, b'\x00')17        def worker_target():18            # Massive booger to blow out all existing logging handlers before forking.19            logging.shutdown()20            reload(logging)21            return f(*args, **kwargs)22        kwargs.update(heartbeat_func=heartbeat_func)23        watchdog_logger.info("Starting watched process...")24        worker_process = multiprocessing.Process(target=worker_target)25        worker_process.start()26        watchdog_logger.info("Watched process started, PID: {0}".format(worker_process.pid))27        last_seen_time = time.time()28        try:29            while not stop_now:30                current_time = time.time()31                read_fds, _, _ = select.select([read_fd], [], [], select_timeout)32                if read_fd in read_fds:33                    watchdog_logger.info("Heartbeat successfully read back from worker.")34                    os.read(read_fd, 1)35                    last_seen_time = time.time()36                if not worker_process.is_alive() and always_restart:37                    watchdog_logger.warning("Working process needs to be restarted, restarting...")38                    worker_process = multiprocessing.Process(target=worker_target)39                    worker_process.start()40                    watchdog_logger.info("New worker process started: PID {0}".format(worker_process.pid))41                    last_seen_time = time.time()42                elif not worker_process.is_alive():43                    stop_now = True44                    exit_code = worker_process.exitcode45                elif current_time - last_seen_time > heartbeat_timeout:46                    watchdog_logger.warning(47                        "No worker process heartbeat seen in {0} seconds.".format(heartbeat_timeout)48                    )49                    watchdog_logger.warning("Killing worker process and restarting...")50                    attempts_left = 1051                    while attempts_left > 0 and worker_process.is_alive():52                        os.kill(worker_process.pid, kill_signal)53                        time.sleep(1)54                    if worker_process.is_alive():55                        watchdog_logger.error(56                            "Unable to kill worker with signal {0}, attempting SIGKILL".format(kill_signal)57                        )58                        os.kill(worker_process.pid, signal.SIGKILL)59                        time.sleep(1)60                    worker_process = multiprocessing.Process(target=worker_target)61                    worker_process.start()62                    watchdog_logger.info("New worker process started: PID {0}".format(worker_process.pid))63                    last_seen_time = time.time()64        except KeyboardInterrupt:65            watchdog_logger.info("SIGINT seen, shutting down...")66        except BaseException as e:67            watchdog_logger.exception("Unhandled exception in watchdog process!")68            raise e69        else:70            sys.exit(exit_code)71        finally:72            if worker_process.is_alive():73                os.kill(worker_process.pid, kill_signal)74    return monitored75if __name__ == "__main__":76    root_logger = logging.getLogger('')77    root_logger.addHandler(logging.StreamHandler())78    root_logger.setLevel(logging.DEBUG)79    def target(heartbeat_func=lambda: None):80        for _ in range(5):81            time.sleep(3)82            heartbeat_func()...

util.py

Source:util.py

1from base64 import b64decode, b64encode2from typing import Any, Dict, List, Tuple3def encode_base64(string: str, encoding: str = "utf-8") -> str:4    return b64encode(string.encode(encoding)).decode(encoding)5def decode_base64(string: str, encoding: str = "utf-8") -> str:6    return b64decode(string.encode(encoding)).decode(encoding)7# TODO: complete the example8def flatten_dict(dictionary: Dict[str, Any], prefix: str = ""):9    """Transforms a given dictionary into a flattened key value dictionary.10    Example:11        >>> from pprint import pprint12        >>> options = {13            "debug": True,14            "user": {15                "first_name": "Jon",16                "last_name": "Doe"17            },18            "offset": 719        }20        >>> pprint(explode_dict(options))21    """22    exploded_options = {}23    stack: List[Tuple[str, List[Any]]] = [(prefix, list(dictionary.items()))]24    while stack[0][1] != []:25        prefix, value = stack[0][1].pop(0)26        if isinstance(value, dict):27            stack.insert(0, (prefix, list(value.items())))28        else:29            prefixes = [elem[0] for elem in reversed(stack) if elem[0]]30            prefixes.append(prefix)31            prefix_str = ".".join(prefixes)32            exploded_options[prefix_str] = value33    return exploded_options34# TODO: remove any its everything except another dict35def unflatten_dict(dictionary: Dict[str, Any]):36    keys = list(dictionary.keys())37    # get prefix38    prefix = None39    index = 040    for char in zip(*keys):41        if char[0] * len(char) == "".join(char):42            index += 143    if index != 0:44        prefix = keys[0][: index - 1]45    # get dict46    unflatten_dict = {}47    for key in keys:48        # TODO: optimize this49        # remove prefix from key50        value = dictionary[key]51        if prefix:52            key = key.split(prefix)[1][1:]53        prefixes = key.split(".")54        cur_dict = unflatten_dict55        cur_prefix = prefixes.pop()56        # proceed to the nested dictionary57        for pkey in prefixes:58            if cur_dict.get(pkey) is None:59                cur_dict[pkey] = {}60            cur_dict = cur_dict[pkey]61        cur_dict[cur_prefix] = value62    return prefix, unflatten_dict63# from threading import Thread64# import asyncio65# def run_until_timeout(func, timeout):66#     result_queue = Queue()67#     worker_process = Process(target=worker, args=(func, result_queue), daemon=True)68#     worker_process.start()69#     worker_process.join(timeout)70#     if worker_process.is_alive():71#         worker_process.terminate()72#         worker_process.join()73#         # if worker_process.is_alive():74#         #     raise Exception("worker is still alive")75#         raise ServerTimeout()76#     if not result_queue.empty():77#         print(result_queue.get())78# def test():79#     for i in range(10):80#         print("sleeping")81#         time.sleep(1)82#     return "result"83# def run_func(func):84#     with ThreadPoolExecutor(max_workers=2) as pool:85#         result = pool.submit(func)86#         result.result(5)87#         pool.shutdown(False)88#         pool.shutdown()89#         print("shuedown")90#         # print(result.cancel())91#         # print(result.set_exception(Exception("Timeout")))92# def run_until_timeout(func, timeout):93#     run_func(func)94#     print("DONE")95# def worker(func, queue):96#     result = func()97#     queue.put(result)98# if __name__ == "__main__":99#     run_until_timeout(test, 10)100# worker_process = Process(target=test, daemon=True)101# worker_process.start()102# worker_process.join(5)103# if worker_process.is_alive():104#     worker_process.terminate()105#     if worker_process.is_alive():106#         raise Exception("worker is still alive")...

test_integration_worker_process.py

Source:test_integration_worker_process.py

1import multiprocessing2import time3from unittest import mock, TestCase4from worker_process import WorkerProcess5class WorkerProcessIntegrationTestCase(TestCase):6    def test_succesful_initialization(self):7        try:8            with mock.patch('config.MACHINE') as MockMachine:9                is_initialized = multiprocessing.Value('b', False)10                def mock_initialize_method():11                    is_initialized.value = True12                MockMachine.initialize.side_effect = mock_initialize_method13                worker_process = WorkerProcess.create_and_start()14                worker_process.send_message_initialize()15                time.sleep(0.1)16                self.assertTrue(is_initialized.value)17                self.assertEqual(18                    worker_process.get_logs(),19                    [{'level': 'INFO', 'message': 'Machine initialized successfully'}],20                )21        finally:22            worker_process.kill()23    def test_failed_initialization(self):24        try:25            with mock.patch('config.MACHINE') as MockMachine:26                MockMachine.initialize.side_effect = Exception("Failed to initialize machine")27                worker_process = WorkerProcess.create_and_start()28                worker_process.send_message_initialize()29                time.sleep(0.1)30                self.assertEqual(31                    worker_process.get_logs(),32                    [{'level': 'ERROR', 'message': 'Failed to initialize machine'}],33                )34        finally:35            worker_process.kill()36    def test_succesful_gcode_sending(self):37        try:38            with mock.patch('config.MACHINE') as MockMachine:39                received_move_coordinates = multiprocessing.Array('c', range(100))40                def mock_move_by_method(x, y, z, feed_rate):41                    received_move_coordinates.value = b'x=%f y=%f z=%f feed_rate=%f' % (42                        x,43                        y,44                        z,45                        feed_rate,46                    )47                type(MockMachine).rapid_move_feed_rate = mock.PropertyMock(return_value=1000)48                MockMachine.move_by.side_effect = mock_move_by_method49                worker_process = WorkerProcess.create_and_start()50                worker_process.send_message_initialize()51                worker_process.send_message_gcode("G0 X3 Y2 Z1")52                time.sleep(0.1)53                self.assertEqual(54                    received_move_coordinates.value,55                    b'x=3.000000 y=2.000000 z=1.000000 feed_rate=1000.000000')56                logs = worker_process.get_logs()57                self.assertEqual(len(logs), 2)58                self.assertEqual(logs[0]['level'], 'INFO')59                self.assertEqual(logs[0]['message'], 'Machine initialized successfully')60                self.assertEqual(logs[1]['level'], 'INFO')61                self.assertTrue(logs[1]['message'].startswith("gcode interpreted successfully, took"))62        finally:63            worker_process.kill()64    def test_failed_gcode_sending(self):65        try:66            with mock.patch('config.MACHINE'):67                worker_process = WorkerProcess.create_and_start()68                worker_process.send_message_initialize()69                worker_process.send_message_gcode("Invalid")70                time.sleep(0.1)71                self.assertEqual(72                    worker_process.get_logs(),73                    [74                        {'level': 'INFO', 'message': 'Machine initialized successfully'},75                        {'level': 'ERROR', 'message': "word 'I' value invalid"},76                    ]77                )78        finally:...

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