diff options
| -rw-r--r-- | bot/constants.py | 7 | ||||
| -rw-r--r-- | bot/exts/backend/sync/_syncers.py | 173 | ||||
| -rw-r--r-- | config-default.yml | 4 | ||||
| -rw-r--r-- | tests/bot/exts/backend/sync/test_base.py | 359 |
4 files changed, 24 insertions, 519 deletions
diff --git a/bot/constants.py b/bot/constants.py index c710e2dff..bb82b976d 100644 --- a/bot/constants.py +++ b/bot/constants.py @@ -559,13 +559,6 @@ class RedirectOutput(metaclass=YAMLGetter): delete_delay: int -class Sync(metaclass=YAMLGetter): - section = 'sync' - - confirm_timeout: int - max_diff: int - - class PythonNews(metaclass=YAMLGetter): section = 'python_news' diff --git a/bot/exts/backend/sync/_syncers.py b/bot/exts/backend/sync/_syncers.py index f7ba811bc..3d4a09df3 100644 --- a/bot/exts/backend/sync/_syncers.py +++ b/bot/exts/backend/sync/_syncers.py @@ -1,15 +1,11 @@ import abc -import asyncio import logging import typing as t from collections import namedtuple -from functools import partial -import discord -from discord import Guild, HTTPException, Member, Message, Reaction, User +from discord import Guild from discord.ext.commands import Context -from bot import constants from bot.api import ResponseCodeError from bot.bot import Bot @@ -25,9 +21,6 @@ _Diff = namedtuple('Diff', ('created', 'updated', 'deleted')) class Syncer(abc.ABC): """Base class for synchronising the database with objects in the Discord cache.""" - _CORE_DEV_MENTION = f"<@&{constants.Roles.core_developers}> " - _REACTION_EMOJIS = (constants.Emojis.check_mark, constants.Emojis.cross_mark) - def __init__(self, bot: Bot) -> None: self.bot = bot @@ -37,112 +30,6 @@ class Syncer(abc.ABC): """The name of the syncer; used in output messages and logging.""" raise NotImplementedError # pragma: no cover - async def _send_prompt(self, message: t.Optional[Message] = None) -> t.Optional[Message]: - """ - Send a prompt to confirm or abort a sync using reactions and return the sent message. - - If a message is given, it is edited to display the prompt and reactions. Otherwise, a new - message is sent to the dev-core channel and mentions the core developers role. If the - channel cannot be retrieved, return None. - """ - log.trace(f"Sending {self.name} sync confirmation prompt.") - - msg_content = ( - f'Possible cache issue while syncing {self.name}s. ' - f'More than {constants.Sync.max_diff} {self.name}s were changed. ' - f'React to confirm or abort the sync.' - ) - - # Send to core developers if it's an automatic sync. - if not message: - log.trace("Message not provided for confirmation; creating a new one in dev-core.") - channel = self.bot.get_channel(constants.Channels.dev_core) - - if not channel: - log.debug("Failed to get the dev-core channel from cache; attempting to fetch it.") - try: - channel = await self.bot.fetch_channel(constants.Channels.dev_core) - except HTTPException: - log.exception( - f"Failed to fetch channel for sending sync confirmation prompt; " - f"aborting {self.name} sync." - ) - return None - - allowed_roles = [discord.Object(constants.Roles.core_developers)] - message = await channel.send( - f"{self._CORE_DEV_MENTION}{msg_content}", - allowed_mentions=discord.AllowedMentions(everyone=False, roles=allowed_roles) - ) - else: - await message.edit(content=msg_content) - - # Add the initial reactions. - log.trace(f"Adding reactions to {self.name} syncer confirmation prompt.") - for emoji in self._REACTION_EMOJIS: - await message.add_reaction(emoji) - - return message - - def _reaction_check( - self, - author: Member, - message: Message, - reaction: Reaction, - user: t.Union[Member, User] - ) -> bool: - """ - Return True if the `reaction` is a valid confirmation or abort reaction on `message`. - - If the `author` of the prompt is a bot, then a reaction by any core developer will be - considered valid. Otherwise, the author of the reaction (`user`) will have to be the - `author` of the prompt. - """ - # For automatic syncs, check for the core dev role instead of an exact author - has_role = any(constants.Roles.core_developers == role.id for role in user.roles) - return ( - reaction.message.id == message.id - and not user.bot - and (has_role if author.bot else user == author) - and str(reaction.emoji) in self._REACTION_EMOJIS - ) - - async def _wait_for_confirmation(self, author: Member, message: Message) -> bool: - """ - Wait for a confirmation reaction by `author` on `message` and return True if confirmed. - - Uses the `_reaction_check` function to determine if a reaction is valid. - - If there is no reaction within `bot.constants.Sync.confirm_timeout` seconds, return False. - To acknowledge the reaction (or lack thereof), `message` will be edited. - """ - # Preserve the core-dev role mention in the message edits so users aren't confused about - # where notifications came from. - mention = self._CORE_DEV_MENTION if author.bot else "" - - reaction = None - try: - log.trace(f"Waiting for a reaction to the {self.name} syncer confirmation prompt.") - reaction, _ = await self.bot.wait_for( - 'reaction_add', - check=partial(self._reaction_check, author, message), - timeout=constants.Sync.confirm_timeout - ) - except asyncio.TimeoutError: - # reaction will remain none thus sync will be aborted in the finally block below. - log.debug(f"The {self.name} syncer confirmation prompt timed out.") - - if str(reaction) == constants.Emojis.check_mark: - log.trace(f"The {self.name} syncer was confirmed.") - await message.edit(content=f':ok_hand: {mention}{self.name} sync will proceed.') - return True - else: - log.info(f"The {self.name} syncer was aborted or timed out!") - await message.edit( - content=f':warning: {mention}{self.name} sync aborted or timed out!' - ) - return False - @abc.abstractmethod async def _get_diff(self, guild: Guild) -> _Diff: """Return the difference between the cache of `guild` and the database.""" @@ -153,62 +40,19 @@ class Syncer(abc.ABC): """Perform the API calls for synchronisation.""" raise NotImplementedError # pragma: no cover - async def _get_confirmation_result( - self, - diff_size: int, - author: Member, - message: t.Optional[Message] = None - ) -> t.Tuple[bool, t.Optional[Message]]: - """ - Prompt for confirmation and return a tuple of the result and the prompt message. - - `diff_size` is the size of the diff of the sync. If it is greater than - `bot.constants.Sync.max_diff`, the prompt will be sent. The `author` is the invoked of the - sync and the `message` is an extant message to edit to display the prompt. - - If confirmed or no confirmation was needed, the result is True. The returned message will - either be the given `message` or a new one which was created when sending the prompt. - """ - log.trace(f"Determining if confirmation prompt should be sent for {self.name} syncer.") - if diff_size > constants.Sync.max_diff: - message = await self._send_prompt(message) - if not message: - return False, None # Couldn't get channel. - - confirmed = await self._wait_for_confirmation(author, message) - if not confirmed: - return False, message # Sync aborted. - - return True, message - async def sync(self, guild: Guild, ctx: t.Optional[Context] = None) -> None: """ Synchronise the database with the cache of `guild`. - If the differences between the cache and the database are greater than - `bot.constants.Sync.max_diff`, then a confirmation prompt will be sent to the dev-core - channel. The confirmation can be optionally redirect to `ctx` instead. + If `ctx` is given, send a message with the results. """ log.info(f"Starting {self.name} syncer.") - message = None - author = self.bot.user if ctx: message = await ctx.send(f"📊 Synchronising {self.name}s.") - author = ctx.author - + else: + message = None diff = await self._get_diff(guild) - diff_dict = diff._asdict() # Ugly method for transforming the NamedTuple into a dict - totals = {k: len(v) for k, v in diff_dict.items() if v is not None} - diff_size = sum(totals.values()) - - confirmed, message = await self._get_confirmation_result(diff_size, author, message) - if not confirmed: - return - - # Preserve the core-dev role mention in the message edits so users aren't confused about - # where notifications came from. - mention = self._CORE_DEV_MENTION if author.bot else "" try: await self._sync(diff) @@ -217,11 +61,14 @@ class Syncer(abc.ABC): # Don't show response text because it's probably some really long HTML. results = f"status {e.status}\n```{e.response_json or 'See log output for details'}```" - content = f":x: {mention}Synchronisation of {self.name}s failed: {results}" + content = f":x: Synchronisation of {self.name}s failed: {results}" else: - results = ", ".join(f"{name} `{total}`" for name, total in totals.items()) + diff_dict = diff._asdict() + results = (f"{name} `{len(val)}`" for name, val in diff_dict.items() if val is not None) + results = ", ".join(results) + log.info(f"{self.name} syncer finished: {results}.") - content = f":ok_hand: {mention}Synchronisation of {self.name}s complete: {results}" + content = f":ok_hand: Synchronisation of {self.name}s complete: {results}" if message: await message.edit(content=content) diff --git a/config-default.yml b/config-default.yml index e7669e6db..3de83dbb1 100644 --- a/config-default.yml +++ b/config-default.yml @@ -445,10 +445,6 @@ redirect_output: delete_invocation: true delete_delay: 15 -sync: - confirm_timeout: 300 - max_diff: 10 - duck_pond: threshold: 4 channel_blacklist: diff --git a/tests/bot/exts/backend/sync/test_base.py b/tests/bot/exts/backend/sync/test_base.py index 886c243cf..4953550f9 100644 --- a/tests/bot/exts/backend/sync/test_base.py +++ b/tests/bot/exts/backend/sync/test_base.py @@ -1,12 +1,9 @@ -import asyncio import unittest from unittest import mock -import discord -from bot import constants from bot.api import ResponseCodeError -from bot.exts.backend.sync._syncers import Syncer, _Diff +from bot.exts.backend.sync._syncers import Syncer from tests import helpers @@ -30,280 +27,16 @@ class SyncerBaseTests(unittest.TestCase): Syncer(self.bot) -class SyncerSendPromptTests(unittest.IsolatedAsyncioTestCase): - """Tests for sending the sync confirmation prompt.""" - - def setUp(self): - self.bot = helpers.MockBot() - self.syncer = TestSyncer(self.bot) - - def mock_get_channel(self): - """Fixture to return a mock channel and message for when `get_channel` is used.""" - self.bot.reset_mock() - - mock_channel = helpers.MockTextChannel() - mock_message = helpers.MockMessage() - - mock_channel.send.return_value = mock_message - self.bot.get_channel.return_value = mock_channel - - return mock_channel, mock_message - - def mock_fetch_channel(self): - """Fixture to return a mock channel and message for when `fetch_channel` is used.""" - self.bot.reset_mock() - - mock_channel = helpers.MockTextChannel() - mock_message = helpers.MockMessage() - - self.bot.get_channel.return_value = None - mock_channel.send.return_value = mock_message - self.bot.fetch_channel.return_value = mock_channel - - return mock_channel, mock_message - - async def test_send_prompt_edits_and_returns_message(self): - """The given message should be edited to display the prompt and then should be returned.""" - msg = helpers.MockMessage() - ret_val = await self.syncer._send_prompt(msg) - - msg.edit.assert_called_once() - self.assertIn("content", msg.edit.call_args[1]) - self.assertEqual(ret_val, msg) - - async def test_send_prompt_gets_dev_core_channel(self): - """The dev-core channel should be retrieved if an extant message isn't given.""" - subtests = ( - (self.bot.get_channel, self.mock_get_channel), - (self.bot.fetch_channel, self.mock_fetch_channel), - ) - - for method, mock_ in subtests: - with self.subTest(method=method, msg=mock_.__name__): - mock_() - await self.syncer._send_prompt() - - method.assert_called_once_with(constants.Channels.dev_core) - - async def test_send_prompt_returns_none_if_channel_fetch_fails(self): - """None should be returned if there's an HTTPException when fetching the channel.""" - self.bot.get_channel.return_value = None - self.bot.fetch_channel.side_effect = discord.HTTPException(mock.MagicMock(), "test error!") - - ret_val = await self.syncer._send_prompt() - - self.assertIsNone(ret_val) - - async def test_send_prompt_sends_and_returns_new_message_if_not_given(self): - """A new message mentioning core devs should be sent and returned if message isn't given.""" - for mock_ in (self.mock_get_channel, self.mock_fetch_channel): - with self.subTest(msg=mock_.__name__): - mock_channel, mock_message = mock_() - ret_val = await self.syncer._send_prompt() - - mock_channel.send.assert_called_once() - self.assertIn(self.syncer._CORE_DEV_MENTION, mock_channel.send.call_args[0][0]) - self.assertEqual(ret_val, mock_message) - - async def test_send_prompt_adds_reactions(self): - """The message should have reactions for confirmation added.""" - extant_message = helpers.MockMessage() - subtests = ( - (extant_message, lambda: (None, extant_message)), - (None, self.mock_get_channel), - (None, self.mock_fetch_channel), - ) - - for message_arg, mock_ in subtests: - subtest_msg = "Extant message" if mock_.__name__ == "<lambda>" else mock_.__name__ - - with self.subTest(msg=subtest_msg): - _, mock_message = mock_() - await self.syncer._send_prompt(message_arg) - - calls = [mock.call(emoji) for emoji in self.syncer._REACTION_EMOJIS] - mock_message.add_reaction.assert_has_calls(calls) - - -class SyncerConfirmationTests(unittest.IsolatedAsyncioTestCase): - """Tests for waiting for a sync confirmation reaction on the prompt.""" - - def setUp(self): - self.bot = helpers.MockBot() - self.syncer = TestSyncer(self.bot) - self.core_dev_role = helpers.MockRole(id=constants.Roles.core_developers) - - @staticmethod - def get_message_reaction(emoji): - """Fixture to return a mock message an reaction from the given `emoji`.""" - message = helpers.MockMessage() - reaction = helpers.MockReaction(emoji=emoji, message=message) - - return message, reaction - - def test_reaction_check_for_valid_emoji_and_authors(self): - """Should return True if authors are identical or are a bot and a core dev, respectively.""" - user_subtests = ( - ( - helpers.MockMember(id=77), - helpers.MockMember(id=77), - "identical users", - ), - ( - helpers.MockMember(id=77, bot=True), - helpers.MockMember(id=43, roles=[self.core_dev_role]), - "bot author and core-dev reactor", - ), - ) - - for emoji in self.syncer._REACTION_EMOJIS: - for author, user, msg in user_subtests: - with self.subTest(author=author, user=user, emoji=emoji, msg=msg): - message, reaction = self.get_message_reaction(emoji) - ret_val = self.syncer._reaction_check(author, message, reaction, user) - - self.assertTrue(ret_val) - - def test_reaction_check_for_invalid_reactions(self): - """Should return False for invalid reaction events.""" - valid_emoji = self.syncer._REACTION_EMOJIS[0] - subtests = ( - ( - helpers.MockMember(id=77), - *self.get_message_reaction(valid_emoji), - helpers.MockMember(id=43, roles=[self.core_dev_role]), - "users are not identical", - ), - ( - helpers.MockMember(id=77, bot=True), - *self.get_message_reaction(valid_emoji), - helpers.MockMember(id=43), - "reactor lacks the core-dev role", - ), - ( - helpers.MockMember(id=77, bot=True, roles=[self.core_dev_role]), - *self.get_message_reaction(valid_emoji), - helpers.MockMember(id=77, bot=True, roles=[self.core_dev_role]), - "reactor is a bot", - ), - ( - helpers.MockMember(id=77), - helpers.MockMessage(id=95), - helpers.MockReaction(emoji=valid_emoji, message=helpers.MockMessage(id=26)), - helpers.MockMember(id=77), - "messages are not identical", - ), - ( - helpers.MockMember(id=77), - *self.get_message_reaction("InVaLiD"), - helpers.MockMember(id=77), - "emoji is invalid", - ), - ) - - for *args, msg in subtests: - kwargs = dict(zip(("author", "message", "reaction", "user"), args)) - with self.subTest(**kwargs, msg=msg): - ret_val = self.syncer._reaction_check(*args) - self.assertFalse(ret_val) - - async def test_wait_for_confirmation(self): - """The message should always be edited and only return True if the emoji is a check mark.""" - subtests = ( - (constants.Emojis.check_mark, True, None), - ("InVaLiD", False, None), - (None, False, asyncio.TimeoutError), - ) - - for emoji, ret_val, side_effect in subtests: - for bot in (True, False): - with self.subTest(emoji=emoji, ret_val=ret_val, side_effect=side_effect, bot=bot): - # Set up mocks - message = helpers.MockMessage() - member = helpers.MockMember(bot=bot) - - self.bot.wait_for.reset_mock() - self.bot.wait_for.return_value = (helpers.MockReaction(emoji=emoji), None) - self.bot.wait_for.side_effect = side_effect - - # Call the function - actual_return = await self.syncer._wait_for_confirmation(member, message) - - # Perform assertions - self.bot.wait_for.assert_called_once() - self.assertIn("reaction_add", self.bot.wait_for.call_args[0]) - - message.edit.assert_called_once() - kwargs = message.edit.call_args[1] - self.assertIn("content", kwargs) - - # Core devs should only be mentioned if the author is a bot. - if bot: - self.assertIn(self.syncer._CORE_DEV_MENTION, kwargs["content"]) - else: - self.assertNotIn(self.syncer._CORE_DEV_MENTION, kwargs["content"]) - - self.assertIs(actual_return, ret_val) - - class SyncerSyncTests(unittest.IsolatedAsyncioTestCase): """Tests for main function orchestrating the sync.""" def setUp(self): self.bot = helpers.MockBot(user=helpers.MockMember(bot=True)) self.syncer = TestSyncer(self.bot) + self.guild = helpers.MockGuild() - async def test_sync_respects_confirmation_result(self): - """The sync should abort if confirmation fails and continue if confirmed.""" - mock_message = helpers.MockMessage() - subtests = ( - (True, mock_message), - (False, None), - ) - - for confirmed, message in subtests: - with self.subTest(confirmed=confirmed): - self.syncer._sync.reset_mock() - self.syncer._get_diff.reset_mock() - - diff = _Diff({1, 2, 3}, {4, 5}, None) - self.syncer._get_diff.return_value = diff - self.syncer._get_confirmation_result = mock.AsyncMock( - return_value=(confirmed, message) - ) - - guild = helpers.MockGuild() - await self.syncer.sync(guild) - - self.syncer._get_diff.assert_called_once_with(guild) - self.syncer._get_confirmation_result.assert_called_once() - - if confirmed: - self.syncer._sync.assert_called_once_with(diff) - else: - self.syncer._sync.assert_not_called() - - async def test_sync_diff_size(self): - """The diff size should be correctly calculated.""" - subtests = ( - (6, _Diff({1, 2}, {3, 4}, {5, 6})), - (5, _Diff({1, 2, 3}, None, {4, 5})), - (0, _Diff(None, None, None)), - (0, _Diff(set(), set(), set())), - ) - - for size, diff in subtests: - with self.subTest(size=size, diff=diff): - self.syncer._get_diff.reset_mock() - self.syncer._get_diff.return_value = diff - self.syncer._get_confirmation_result = mock.AsyncMock(return_value=(False, None)) - - guild = helpers.MockGuild() - await self.syncer.sync(guild) - - self.syncer._get_diff.assert_called_once_with(guild) - self.syncer._get_confirmation_result.assert_called_once() - self.assertEqual(self.syncer._get_confirmation_result.call_args[0][0], size) + # Make sure `_get_diff` returns a MagicMock, not an AsyncMock + self.syncer._get_diff.return_value = mock.MagicMock() async def test_sync_message_edited(self): """The message should be edited if one was sent, even if the sync has an API error.""" @@ -316,89 +49,25 @@ class SyncerSyncTests(unittest.IsolatedAsyncioTestCase): for message, side_effect, should_edit in subtests: with self.subTest(message=message, side_effect=side_effect, should_edit=should_edit): self.syncer._sync.side_effect = side_effect - self.syncer._get_confirmation_result = mock.AsyncMock( - return_value=(True, message) - ) + ctx = helpers.MockContext() + ctx.send.return_value = message - guild = helpers.MockGuild() - await self.syncer.sync(guild) + await self.syncer.sync(self.guild, ctx) if should_edit: message.edit.assert_called_once() self.assertIn("content", message.edit.call_args[1]) - async def test_sync_confirmation_context_redirect(self): - """If ctx is given, a new message should be sent and author should be ctx's author.""" - mock_member = helpers.MockMember() + async def test_sync_message_sent(self): + """If ctx is given, a new message should be sent.""" subtests = ( - (None, self.bot.user, None), - (helpers.MockContext(author=mock_member), mock_member, helpers.MockMessage()), + (None, None), + (helpers.MockContext(), helpers.MockMessage()), ) - for ctx, author, message in subtests: - with self.subTest(ctx=ctx, author=author, message=message): - if ctx is not None: - ctx.send.return_value = message - - # Make sure `_get_diff` returns a MagicMock, not an AsyncMock - self.syncer._get_diff.return_value = mock.MagicMock() - - self.syncer._get_confirmation_result = mock.AsyncMock(return_value=(False, None)) - - guild = helpers.MockGuild() - await self.syncer.sync(guild, ctx) + for ctx, message in subtests: + with self.subTest(ctx=ctx, message=message): + await self.syncer.sync(self.guild, ctx) if ctx is not None: ctx.send.assert_called_once() - - self.syncer._get_confirmation_result.assert_called_once() - self.assertEqual(self.syncer._get_confirmation_result.call_args[0][1], author) - self.assertEqual(self.syncer._get_confirmation_result.call_args[0][2], message) - - @mock.patch.object(constants.Sync, "max_diff", new=3) - async def test_confirmation_result_small_diff(self): - """Should always return True and the given message if the diff size is too small.""" - author = helpers.MockMember() - expected_message = helpers.MockMessage() - - for size in (3, 2): # pragma: no cover - with self.subTest(size=size): - self.syncer._send_prompt = mock.AsyncMock() - self.syncer._wait_for_confirmation = mock.AsyncMock() - - coro = self.syncer._get_confirmation_result(size, author, expected_message) - result, actual_message = await coro - - self.assertTrue(result) - self.assertEqual(actual_message, expected_message) - self.syncer._send_prompt.assert_not_called() - self.syncer._wait_for_confirmation.assert_not_called() - - @mock.patch.object(constants.Sync, "max_diff", new=3) - async def test_confirmation_result_large_diff(self): - """Should return True if confirmed and False if _send_prompt fails or aborted.""" - author = helpers.MockMember() - mock_message = helpers.MockMessage() - - subtests = ( - (True, mock_message, True, "confirmed"), - (False, None, False, "_send_prompt failed"), - (False, mock_message, False, "aborted"), - ) - - for expected_result, expected_message, confirmed, msg in subtests: # pragma: no cover - with self.subTest(msg=msg): - self.syncer._send_prompt = mock.AsyncMock(return_value=expected_message) - self.syncer._wait_for_confirmation = mock.AsyncMock(return_value=confirmed) - - coro = self.syncer._get_confirmation_result(4, author) - actual_result, actual_message = await coro - - self.syncer._send_prompt.assert_called_once_with(None) # message defaults to None - self.assertIs(actual_result, expected_result) - self.assertEqual(actual_message, expected_message) - - if expected_message: - self.syncer._wait_for_confirmation.assert_called_once_with( - author, expected_message - ) |