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How to use shutdown_requested method in localstack

Best Python code snippet using localstack_python

test_twitch_chatbot.py

Source:test_twitch_chatbot.py

1from threading import Thread2from time import sleep3from typing import Tuple, List4from dataclasses import dataclass, field5from teamfightchaticts.settings import TwitchSettings6from teamfightchaticts.tft_command import TFTCommand7from teamfightchaticts.twitch_connection import TwitchConnection, LineBuffer8@dataclass9class IrcSocketMock:10    text_to_return: str11    text_received: str=''12    closed: bool=True13    buffer_id: int=014    encoding: str='utf-8'15    def connect(self, _: Tuple[str, int]):16        self.closed = False17    def close(self):18        self.closed = True19    def recv(self, bufsize: int) -> bytes:20        text_enc = self.text_to_return.encode(self.encoding)21        start, end = self.buffer_id * bufsize, (self.buffer_id + 1) * bufsize22        self.buffer_id += 123        sleep(0.01)24        return text_enc[start:min(end, len(text_enc))] if start < len(text_enc) else bytes([])25    def send(self, data: bytes) -> int:26        self.text_received += data.decode(self.encoding)27        sleep(0.01)28@dataclass29class RemoteControlMock:30    received_commands: List[TFTCommand]=field(init=False, default_factory=list)31    def execute_cmd(self, tft_cmd: TFTCommand):32        self.received_commands.append(tft_cmd)33def msg_padding(sequence: str, repetitions: int, separator: str=''):34    return separator.join([sequence for _ in range(repetitions)])35def test_should_connect_to_chat():36    conn_settings = TwitchSettings('foobar.com', 6667, 'twitch_test', 'my_chatbot', 'somepwd')37    text_to_return = "End of /NAMES list\r\n"38    connection = TwitchConnection(conn_settings, lambda: IrcSocketMock(text_to_return))39    connection.connect_to_server()40    exp_text_buffer = 'PASS somepwd\nNICK my_chatbot\nJOIN #twitch_test\n'41    socket: IrcSocketMock = connection.websocket42    assert not socket.closed and socket.text_received == exp_text_buffer43# def test_should_fail_to_connect_to_chat_after_timeout():44#     # TODO: use asyncio for this feature. threads are very clunky to achieve this.45#     conn_settings = TwitchSettings('twitch.tv', 6667, 'twitch_test', 'my_chatbot', 'somepwd')46#     connection = TwitchConnection(conn_settings, lambda: IrcSocketMock(''), timeout_seconds=0.5)47#     connection.connect_to_server()48#     sleep(0.6)49#     print(connection)50#     assert connection.irc is None51# # TODO: make this test work52def test_should_disconnect_from_chat_gracefully():53    conn_settings = TwitchSettings('twitch.tv', 6667, 'twitch_test', 'my_chatbot', 'somepwd')54    text_to_return = "End of /NAMES list\r\n" + msg_padding(' ', 1024) \55        + "\r\n::w3w4\r\n::lock\r\n::some text\r\n::lvl\r\n"56    connection = TwitchConnection(conn_settings, lambda: IrcSocketMock(text_to_return))57    msgs_received: List[TFTCommand] = []58    shutdown_requested = False59    def observe_twitch_chat():60        connection.connect_to_server()61        connection.register_message_listener(msgs_received.append)62        connection.receive_messages_as_daemon(lambda: shutdown_requested)63    conn_thread = Thread(target=observe_twitch_chat)64    conn_thread.start()65    sleep(1)66    shutdown_requested = True67    conn_thread.join(timeout=0.1)68    assert set(['w3w4', 'lock', 'lvl']) <= set(msgs_received)69def test_line_buffer():70    def process_read_buffer(text_buffer, remainder):71        buf = LineBuffer(remainder)72        return buf.process(text_buffer), buf.remainder73    assert process_read_buffer('', '') == ([], '')74    assert process_read_buffer('', 'abc') == ([], 'abc')75    assert process_read_buffer('abc\r\n', '') == (['abc'], '')76    assert process_read_buffer('abc\r\ndef', '') == (['abc'], 'def')77    assert process_read_buffer('abc\r\ndef\r\nghi', '') == (['abc', 'def'], 'ghi')78    assert process_read_buffer('\ndef', 'abc\r') == (['abc'], 'def')79    assert process_read_buffer('\r\ndef', 'abc') == (['abc'], 'def')80    assert process_read_buffer('abc\r\ndef\r\n', '') == (['abc', 'def'], '')81def test_should_send_chat_pong():82    conn_settings = TwitchSettings('twitch.tv', 6667, 'twitch_test', 'my_chatbot', 'somepwd')83    text_to_return = "End of /NAMES list\r\n" + msg_padding(' ', 1024) \84        + "\r\n::w3w4\r\n::lock\r\n::some text\r\nPING :tmi.twitch.tv\r\n::lvl\r\n"85    connection = TwitchConnection(conn_settings, lambda: IrcSocketMock(text_to_return))86    shutdown_requested = False87    def observe_twitch_chat():88        connection.connect_to_server()89        connection.receive_messages_as_daemon(lambda: shutdown_requested)90    conn_thread = Thread(target=observe_twitch_chat)91    conn_thread.start()92    sleep(1)93    shutdown_requested = True94    conn_thread.join(timeout=0.1)95    socket: IrcSocketMock = connection.websocket96    assert 'PONG :tmi.twitch.tv' in socket.text_received...

subscription.py

Source:subscription.py

1#!/usr/bin/env python32from config import *3import multiprocessing, threading, logging, time, signal4from google.cloud import pubsub_v15shutdown_requested = False # Whether this program should shut down due to SIGINT/SIGTERM6def subscribe(subscription_name, worker, give_up=False):7    """Receives and spawns threads to handle jobs received in Pub/Sub"""8    global shutdown_requested9    message = None # The current active message10    lock = threading.Lock()11    client = pubsub_v1.SubscriberClient()12    subscription_path = client.subscription_path(GCLOUD_PROJECT_ID, subscription_name)13    def renew_deadline():14        """Repeatedly give the active message more time to be processed to prevent it being resent"""15        while not (message == None and shutdown_requested):16            if message != None:17                try:18                    with lock:19                        client.modify_ack_deadline(subscription=subscription_path,20                                                    ack_ids=[message.ack_id],21                                                    ack_deadline_seconds=SUB_ACK_DEADLINE)22                        logging.debug('Reset ack deadline for {} for {}s'.format(message.message.data.decode(), SUB_ACK_DEADLINE))23                    time.sleep(SUB_SLEEP_TIME)24                except Exception as e:25                    logging.warning('Could not reset ack deadline', exc_info=e)26    watcher = threading.Thread(target=renew_deadline)27    watcher.start()28    # Repeatedly check for new jobs until SIGINT/SIGTERM received29    logging.info('Listening for jobs')30    try:31        while not shutdown_requested:32            response = client.pull(request= {'subscription': subscription_path, 'max_messages':1})33            if not response.received_messages:34                logging.info('Job queue is empty')35                time.sleep(SUB_SLEEP_TIME)36                continue37            if len(response.received_messages) > 1:38                logging.warning('Received more than one job when only one expected')39            with lock:40                message = response.received_messages[0]41            logging.info('Beginning: {}'.format(message.message.data.decode()))42            process = multiprocessing.Process(target=worker, args=(message.message.data.decode(),))43            process.start()44            process.join()45            if process.exitcode == 0:46                # Success; acknowledge and return47                try:48                    client.acknowledge(subscription=subscription_path, ack_ids=[message.ack_id])49                    logging.info('Ending and acknowledged: {}'.format(message.message.data.decode()))50                except Exception as e:51                    logging.error('Could not end and acknowledge: {}'.format(message.message.data.decode()), exc_info=e)52            elif give_up and (time.time() - message.message.publish_time.timestamp()) >600:53                # Failure; give up and acknowledge54                try:55                    client.acknowledge(subscription=subscription_path, ack_ids=[message.ack_id])56                    logging.error('Failed but acknowledged: {}'.format(message.message.data.decode()))57                except Exception as e:58                    logging.error('Failed but could not acknowledge: {}'.format(message.message.data.decode()), exc_info=e)59            else:60                # Failure; refuse to acknowledge61                logging.error('Failed, not acknowledged: {}'.format(message.message.data.decode()))62            # Stop extending this message's deadline in the "watcher" thread63            with lock:64                message = None65    except Exception as e:66        logging.critical('Exception encountered. ', exc_info=e)67    finally:68        # If there is an exception, make sure the "watcher" thread shuts down69        shutdown_requested = True70def graceful_exit(signal, frame):71    global shutdown_requested72    shutdown_requested = True73    logging.warning('Requesting shutdown due to signal {}'.format(signal))74signal.signal(signal.SIGINT, graceful_exit)...

twitch_chatbot.py

Source:twitch_chatbot.py

1from threading import Thread2from typing import Dict3from dataclasses import dataclass, field4from teamfightchaticts.tft_command import TFTCommand5from teamfightchaticts.twitch_connection import TwitchConnection6from teamfightchaticts.tft_remote_control import TFTRemoteControl7@dataclass8class TwitchTFTChatbotState:9    last_cmd: TFTCommand=TFTCommand('')10    cmd_counts: Dict[TFTCommand, int]=field(default_factory=lambda: {})11    pool: int=1012    def update_state(self, tft_cmd: TFTCommand):13        self.cmd_counts[tft_cmd] += 114    def reset_counts(self):15        self.last_cmd = self.cmd_to_execute16        self.cmd_counts = {}17    @property18    def cmd_to_execute(self) -> TFTCommand:19        return next(filter(lambda cmd: self.cmd_counts[cmd] >= self.pool, self.cmd_counts), None)20@dataclass21class TwitchTFTChatbot:22    connection: TwitchConnection23    tft_remote_control: TFTRemoteControl24    state: TwitchTFTChatbotState=TwitchTFTChatbotState()25    thread: Thread=field(init=False, default=None)26    shutdown_requested: bool=False27    def start_bot(self, pool_size: int):28        if self.shutdown_requested:29            return30        self.state.pool = pool_size31        self.shutdown_requested = False32        self.thread = Thread(target=self._receive_twitch_messages)33        self.thread.start()34    def stop_bot(self):35        self.shutdown_requested = True36        self.thread.join(timeout=0.1)37        self.shutdown_requested = False38    def _receive_twitch_messages(self):39        self.connection.connect_to_server()40        self.connection.register_message_listener(self._process_tft_cmd)41        self.connection.receive_messages_as_daemon(lambda: self.shutdown_requested)42    def _process_tft_cmd(self, msg: str):43        tft_cmd = TFTCommand(msg)44        self.state.update_state(tft_cmd)45        cmd_exec = self.state.cmd_to_execute46        # vote for next command not complete yet47        if not cmd_exec:48            return49        # same command twice50        if cmd_exec == self.state.last_cmd:51            self.state.last_cmd = TFTCommand('')52            return53        # command is ok, go execute it54        self.tft_remote_control.execute_cmd(cmd_exec)...

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