diff options
| -rw-r--r-- | bot/api.py | 73 | ||||
| -rw-r--r-- | bot/bot.py | 82 | ||||
| -rw-r--r-- | tests/bot/test_api.py | 8 |
3 files changed, 39 insertions, 124 deletions
diff --git a/bot/api.py b/bot/api.py index 4b8520582..d93f9f2ba 100644 --- a/bot/api.py +++ b/bot/api.py @@ -37,64 +37,27 @@ class APIClient: session: Optional[aiohttp.ClientSession] = None loop: asyncio.AbstractEventLoop = None - def __init__(self, loop: asyncio.AbstractEventLoop, **kwargs): + def __init__(self, **session_kwargs): auth_headers = { 'Authorization': f"Token {Keys.site_api}" } - if 'headers' in kwargs: - kwargs['headers'].update(auth_headers) + if 'headers' in session_kwargs: + session_kwargs['headers'].update(auth_headers) else: - kwargs['headers'] = auth_headers + session_kwargs['headers'] = auth_headers - self.session = None - self.loop = loop - - self._ready = asyncio.Event(loop=loop) - self._creation_task = None - self._default_session_kwargs = kwargs - - self.recreate() + # aiohttp will complain if APIClient gets instantiated outside a coroutine. Thankfully, we + # don't and shouldn't need to do that, so we can avoid scheduling a task to create it. + self.session = aiohttp.ClientSession(**session_kwargs) @staticmethod def _url_for(endpoint: str) -> str: return f"{URLs.site_schema}{URLs.site_api}/{quote_url(endpoint)}" - async def _create_session(self, **session_kwargs) -> None: - """ - Create the aiohttp session with `session_kwargs` and set the ready event. - - `session_kwargs` is merged with `_default_session_kwargs` and overwrites its values. - If an open session already exists, it will first be closed. - """ - await self.close() - self.session = aiohttp.ClientSession(**{**self._default_session_kwargs, **session_kwargs}) - self._ready.set() - async def close(self) -> None: - """Close the aiohttp session and unset the ready event.""" - if self.session: - await self.session.close() - - self._ready.clear() - - def recreate(self, force: bool = False, **session_kwargs) -> None: - """ - Schedule the aiohttp session to be created with `session_kwargs` if it's been closed. - - If `force` is True, the session will be recreated even if an open one exists. If a task to - create the session is pending, it will be cancelled. - - `session_kwargs` is merged with the kwargs given when the `APIClient` was created and - overwrites those default kwargs. - """ - if force or self.session is None or self.session.closed: - if force and self._creation_task: - self._creation_task.cancel() - - # Don't schedule a task if one is already in progress. - if force or self._creation_task is None or self._creation_task.done(): - self._creation_task = self.loop.create_task(self._create_session(**session_kwargs)) + """Close the aiohttp session.""" + await self.session.close() async def maybe_raise_for_status(self, response: aiohttp.ClientResponse, should_raise: bool) -> None: """Raise ResponseCodeError for non-OK response if an exception should be raised.""" @@ -108,8 +71,6 @@ class APIClient: async def request(self, method: str, endpoint: str, *, raise_for_status: bool = True, **kwargs) -> dict: """Send an HTTP request to the site API and return the JSON response.""" - await self._ready.wait() - async with self.session.request(method.upper(), self._url_for(endpoint), **kwargs) as resp: await self.maybe_raise_for_status(resp, raise_for_status) return await resp.json() @@ -132,25 +93,9 @@ class APIClient: async def delete(self, endpoint: str, *, raise_for_status: bool = True, **kwargs) -> Optional[dict]: """Site API DELETE.""" - await self._ready.wait() - async with self.session.delete(self._url_for(endpoint), **kwargs) as resp: if resp.status == 204: return None await self.maybe_raise_for_status(resp, raise_for_status) return await resp.json() - - -def loop_is_running() -> bool: - """ - Determine if there is a running asyncio event loop. - - This helps enable "call this when event loop is running" logic (see: Twisted's `callWhenRunning`), - which is currently not provided by asyncio. - """ - try: - asyncio.get_running_loop() - except RuntimeError: - return False - return True diff --git a/bot/bot.py b/bot/bot.py index f71f5d1fb..4ebe0a5c3 100644 --- a/bot/bot.py +++ b/bot/bot.py @@ -32,7 +32,7 @@ class Bot(commands.Bot): self.http_session: Optional[aiohttp.ClientSession] = None self.redis_session = redis_session - self.api_client = api.APIClient(loop=self.loop) + self.api_client: Optional[api.APIClient] = None self.filter_list_cache = defaultdict(dict) self._connector = None @@ -77,46 +77,6 @@ class Bot(commands.Bot): for item in full_cache: self.insert_item_into_filter_list_cache(item) - def _recreate(self) -> None: - """Re-create the connector, aiohttp session, the APIClient and the Redis session.""" - # Use asyncio for DNS resolution instead of threads so threads aren't spammed. - # Doesn't seem to have any state with regards to being closed, so no need to worry? - self._resolver = aiohttp.AsyncResolver() - - # Its __del__ does send a warning but it doesn't always show up for some reason. - if self._connector and not self._connector._closed: - log.warning( - "The previous connector was not closed; it will remain open and be overwritten" - ) - - if self.redis_session.closed: - # If the RedisSession was somehow closed, we try to reconnect it - # here. Normally, this shouldn't happen. - self.loop.create_task(self.redis_session.connect()) - - # Use AF_INET as its socket family to prevent HTTPS related problems both locally - # and in production. - self._connector = aiohttp.TCPConnector( - resolver=self._resolver, - family=socket.AF_INET, - ) - - # Client.login() will call HTTPClient.static_login() which will create a session using - # this connector attribute. - self.http.connector = self._connector - - # Its __del__ does send a warning but it doesn't always show up for some reason. - if self.http_session and not self.http_session.closed: - log.warning( - "The previous session was not closed; it will remain open and be overwritten" - ) - - self.http_session = aiohttp.ClientSession(connector=self._connector) - self.api_client.recreate(force=True, connector=self._connector) - - # Build the FilterList cache - self.loop.create_task(self.cache_filter_list_data()) - @classmethod def create(cls) -> "Bot": """Create and return an instance of a Bot.""" @@ -180,21 +140,15 @@ class Bot(commands.Bot): return command def clear(self) -> None: - """ - Clears the internal state of the bot and recreates the connector and sessions. - - Will cause a DeprecationWarning if called outside a coroutine. - """ - # Because discord.py recreates the HTTPClient session, may as well follow suit and recreate - # our own stuff here too. - self._recreate() - super().clear() + """Not implemented! Re-instantiate the bot instead of attempting to re-use a closed one.""" + raise NotImplementedError("Re-using a Bot object after closing it is not supported.") async def close(self) -> None: """Close the Discord connection and the aiohttp session, connector, statsd client, and resolver.""" await super().close() - await self.api_client.close() + if self.api_client: + await self.api_client.close() if self.http_session: await self.http_session.close() @@ -229,7 +183,31 @@ class Bot(commands.Bot): async def login(self, *args, **kwargs) -> None: """Re-create the connector and set up sessions before logging into Discord.""" - self._recreate() + # Use asyncio for DNS resolution instead of threads so threads aren't spammed. + self._resolver = aiohttp.AsyncResolver() + + # Use AF_INET as its socket family to prevent HTTPS related problems both locally + # and in production. + self._connector = aiohttp.TCPConnector( + resolver=self._resolver, + family=socket.AF_INET, + ) + + # Client.login() will call HTTPClient.static_login() which will create a session using + # this connector attribute. + self.http.connector = self._connector + + self.http_session = aiohttp.ClientSession(connector=self._connector) + self.api_client = api.APIClient(connector=self._connector) + + if self.redis_session.closed: + # If the RedisSession was somehow closed, we try to reconnect it + # here. Normally, this shouldn't happen. + await self.redis_session.connect() + + # Build the FilterList cache + await self.cache_filter_list_data() + await self.stats.create_socket() await super().login(*args, **kwargs) diff --git a/tests/bot/test_api.py b/tests/bot/test_api.py index 99e942813..76bcb481d 100644 --- a/tests/bot/test_api.py +++ b/tests/bot/test_api.py @@ -13,14 +13,6 @@ class APIClientTests(unittest.IsolatedAsyncioTestCase): cls.error_api_response = MagicMock() cls.error_api_response.status = 999 - def test_loop_is_not_running_by_default(self): - """The event loop should not be running by default.""" - self.assertFalse(api.loop_is_running()) - - async def test_loop_is_running_in_async_context(self): - """The event loop should be running in an async context.""" - self.assertTrue(api.loop_is_running()) - def test_response_code_error_default_initialization(self): """Test the default initialization of `ResponseCodeError` without `text` or `json`""" error = api.ResponseCodeError(response=self.error_api_response) |