From 7638522df30e6ef24ab3f76a529b135e58fa25a1 Mon Sep 17 00:00:00 2001 From: Egor Tensin Date: Mon, 3 May 2021 21:40:30 +0300 Subject: vk.tracking: status_tracker -> status --- vk/tracking/__init__.py | 2 +- vk/tracking/status.py | 139 ++++++++++++++++++++++++++++++++++++++++++ vk/tracking/status_tracker.py | 139 ------------------------------------------ 3 files changed, 140 insertions(+), 140 deletions(-) create mode 100644 vk/tracking/status.py delete mode 100644 vk/tracking/status_tracker.py (limited to 'vk') diff --git a/vk/tracking/__init__.py b/vk/tracking/__init__.py index 03c4482..78589b5 100644 --- a/vk/tracking/__init__.py +++ b/vk/tracking/__init__.py @@ -2,6 +2,6 @@ # This file is licensed under the terms of the MIT License. # See LICENSE.txt for details. -from .status_tracker import StatusTracker +from .status import StatusTracker __all__ = 'sessions', 'status_tracker', diff --git a/vk/tracking/status.py b/vk/tracking/status.py new file mode 100644 index 0000000..a16a34e --- /dev/null +++ b/vk/tracking/status.py @@ -0,0 +1,139 @@ +# Copyright (c) 2016 Egor Tensin +# This file is part of the "VK scripts" project. +# For details, see https://github.com/egor-tensin/vk-scripts. +# Distributed under the MIT License. + +from collections.abc import Callable +import contextlib +import time +import signal + +import vk.error +from vk.user import UserField + + +class StatusTracker: + DEFAULT_TIMEOUT = 5 + + def __init__(self, api, timeout=DEFAULT_TIMEOUT): + self._api = api + self._timeout = timeout + self._on_initial_status = [] + self._on_status_update = [] + self._on_connection_error = [] + + def _wait_after_connection_error(self): + time.sleep(self._timeout) + + def add_database_writer(self, writer): + self.add_initial_status_handler(writer.on_initial_status) + self.add_status_update_handler(writer.on_status_update) + self.add_connection_error_handler(writer.on_connection_error) + + def add_initial_status_handler(self, fn): + self._assert_is_callback(fn) + self._on_initial_status.append(fn) + + def add_status_update_handler(self, fn): + self._assert_is_callback(fn) + self._on_status_update.append(fn) + + def add_connection_error_handler(self, fn): + self._assert_is_callback(fn) + self._on_connection_error.append(fn) + + @staticmethod + def _assert_is_callback(fn): + if not isinstance(fn, Callable): + raise TypeError() + + _USER_FIELDS = UserField.DOMAIN, UserField.ONLINE, UserField.LAST_SEEN, + + def _query_status(self, uids): + user_list = self._api.users_get(uids, self._USER_FIELDS, + deactivated_users=False) + return {user.get_uid(): user for user in user_list} + + def _notify_status(self, user): + for fn in self._on_initial_status: + fn(user) + + def _notify_status_update(self, user): + for fn in self._on_status_update: + fn(user) + + def _notify_connection_error(self, e): + for fn in self._on_connection_error: + fn(e) + + def _query_initial_status(self, uids): + while True: + try: + return self._query_status(uids) + except vk.error.APIConnectionError as e: + self._notify_connection_error(e) + self._wait_after_connection_error() + + def _query_status_updates(self, uids): + while True: + self._wait_after_connection_error() + try: + return self._query_status(uids) + except vk.error.APIConnectionError as e: + self._notify_connection_error(e) + + @staticmethod + def _filter_status_updates(old_users, new_users): + for uid, user in new_users.items(): + if old_users[uid].is_online() != user.is_online(): + old_users[uid] = user + yield user + + def query_status(self, uids): + users = self._query_initial_status(uids) + for user in users.values(): + self._notify_status(user) + return users + + def _do_loop(self, uids): + users = self.query_status(uids) + while True: + updated_users = self._query_status_updates(uids) + for user in self._filter_status_updates(users, updated_users): + self._notify_status_update(user) + + class StopLooping(RuntimeError): + pass + + @staticmethod + def _stop_looping(signo, frame): + raise StatusTracker.StopLooping() + + @staticmethod + @contextlib.contextmanager + def _handle_signal(signo, handler): + old_handler = signal.getsignal(signo) + signal.signal(signo, handler) + try: + yield + finally: + signal.signal(signal.SIGINT, old_handler) + + @staticmethod + def _handle_sigint(): + # Python doesn't raise KeyboardInterrupt in case a real SIGINT is sent + # from outside, surprisingly. + return StatusTracker._handle_signal(signal.SIGINT, + StatusTracker._stop_looping) + + @staticmethod + def _handle_sigterm(): + return StatusTracker._handle_signal(signal.SIGTERM, + StatusTracker._stop_looping) + + def loop(self, uids): + with self._handle_sigint(), self._handle_sigterm(): + try: + self._do_loop(uids) + except (KeyboardInterrupt, StatusTracker.StopLooping): + pass diff --git a/vk/tracking/status_tracker.py b/vk/tracking/status_tracker.py deleted file mode 100644 index a16a34e..0000000 --- a/vk/tracking/status_tracker.py +++ /dev/null @@ -1,139 +0,0 @@ -# Copyright (c) 2016 Egor Tensin -# This file is part of the "VK scripts" project. -# For details, see https://github.com/egor-tensin/vk-scripts. -# Distributed under the MIT License. - -from collections.abc import Callable -import contextlib -import time -import signal - -import vk.error -from vk.user import UserField - - -class StatusTracker: - DEFAULT_TIMEOUT = 5 - - def __init__(self, api, timeout=DEFAULT_TIMEOUT): - self._api = api - self._timeout = timeout - self._on_initial_status = [] - self._on_status_update = [] - self._on_connection_error = [] - - def _wait_after_connection_error(self): - time.sleep(self._timeout) - - def add_database_writer(self, writer): - self.add_initial_status_handler(writer.on_initial_status) - self.add_status_update_handler(writer.on_status_update) - self.add_connection_error_handler(writer.on_connection_error) - - def add_initial_status_handler(self, fn): - self._assert_is_callback(fn) - self._on_initial_status.append(fn) - - def add_status_update_handler(self, fn): - self._assert_is_callback(fn) - self._on_status_update.append(fn) - - def add_connection_error_handler(self, fn): - self._assert_is_callback(fn) - self._on_connection_error.append(fn) - - @staticmethod - def _assert_is_callback(fn): - if not isinstance(fn, Callable): - raise TypeError() - - _USER_FIELDS = UserField.DOMAIN, UserField.ONLINE, UserField.LAST_SEEN, - - def _query_status(self, uids): - user_list = self._api.users_get(uids, self._USER_FIELDS, - deactivated_users=False) - return {user.get_uid(): user for user in user_list} - - def _notify_status(self, user): - for fn in self._on_initial_status: - fn(user) - - def _notify_status_update(self, user): - for fn in self._on_status_update: - fn(user) - - def _notify_connection_error(self, e): - for fn in self._on_connection_error: - fn(e) - - def _query_initial_status(self, uids): - while True: - try: - return self._query_status(uids) - except vk.error.APIConnectionError as e: - self._notify_connection_error(e) - self._wait_after_connection_error() - - def _query_status_updates(self, uids): - while True: - self._wait_after_connection_error() - try: - return self._query_status(uids) - except vk.error.APIConnectionError as e: - self._notify_connection_error(e) - - @staticmethod - def _filter_status_updates(old_users, new_users): - for uid, user in new_users.items(): - if old_users[uid].is_online() != user.is_online(): - old_users[uid] = user - yield user - - def query_status(self, uids): - users = self._query_initial_status(uids) - for user in users.values(): - self._notify_status(user) - return users - - def _do_loop(self, uids): - users = self.query_status(uids) - while True: - updated_users = self._query_status_updates(uids) - for user in self._filter_status_updates(users, updated_users): - self._notify_status_update(user) - - class StopLooping(RuntimeError): - pass - - @staticmethod - def _stop_looping(signo, frame): - raise StatusTracker.StopLooping() - - @staticmethod - @contextlib.contextmanager - def _handle_signal(signo, handler): - old_handler = signal.getsignal(signo) - signal.signal(signo, handler) - try: - yield - finally: - signal.signal(signal.SIGINT, old_handler) - - @staticmethod - def _handle_sigint(): - # Python doesn't raise KeyboardInterrupt in case a real SIGINT is sent - # from outside, surprisingly. - return StatusTracker._handle_signal(signal.SIGINT, - StatusTracker._stop_looping) - - @staticmethod - def _handle_sigterm(): - return StatusTracker._handle_signal(signal.SIGTERM, - StatusTracker._stop_looping) - - def loop(self, uids): - with self._handle_sigint(), self._handle_sigterm(): - try: - self._do_loop(uids) - except (KeyboardInterrupt, StatusTracker.StopLooping): - pass -- cgit v1.2.3