Files
croccybot/bot/core/blacklists.py
Conatum 1c05d7a880 sharding (blacklists): Blacklist shard support.
Moved the `user_blacklist` and `guild_blacklist` to a client TTL cache.
2021-12-22 13:07:20 +02:00

93 lines
2.2 KiB
Python

"""
Guild, user, and member blacklists.
"""
from collections import defaultdict
import cachetools.func
from data import tables
from meta import client
from .module import module
@cachetools.func.ttl_cache(ttl=300)
def guild_blacklist():
"""
Get the guild blacklist
"""
rows = tables.global_guild_blacklist.select_where()
return set(row['guildid'] for row in rows)
@cachetools.func.ttl_cache(ttl=300)
def user_blacklist():
"""
Get the global user blacklist.
"""
rows = tables.global_user_blacklist.select_where()
return set(row['userid'] for row in rows)
@module.init_task
def load_ignored_members(client):
"""
Load the ignored members.
"""
ignored = defaultdict(set)
rows = tables.ignored_members.select_where()
for row in rows:
ignored[row['guildid']].add(row['userid'])
client.objects['ignored_members'] = ignored
if rows:
client.log(
"Loaded {} ignored members across {} guilds.".format(
len(rows),
len(ignored)
),
context="MEMBER_BLACKLIST"
)
@module.init_task
def attach_client_blacklists(client):
client.guild_blacklist = guild_blacklist
client.user_blacklist = user_blacklist
@module.launch_task
async def leave_blacklisted_guilds(client):
"""
Launch task to leave any blacklisted guilds we are in.
"""
to_leave = [
guild for guild in client.guilds
if guild.id in guild_blacklist()
]
for guild in to_leave:
await guild.leave()
if to_leave:
client.log(
"Left {} blacklisted guilds!".format(len(to_leave)),
context="GUILD_BLACKLIST"
)
@client.add_after_event('guild_join')
async def check_guild_blacklist(client, guild):
"""
Guild join event handler to check whether the guild is blacklisted.
If so, leaves the guild.
"""
# First refresh the blacklist cache
if guild.id in guild_blacklist():
await guild.leave()
client.log(
"Automatically left blacklisted guild '{}' (gid:{}) upon join.".format(guild.name, guild.id),
context="GUILD_BLACKLIST"
)